/**
* This function will initial STM32 Radio board.
*/
void rt_hw_board_init(void)
{
/* Configure the system clocks */
SystemInit();
all_device_reset();
/* NVIC Configuration */
NVIC_Configuration();
/* Configure the SysTick */
SysTick_Config( SystemCoreClock / RT_TICK_PER_SECOND );
/* Console Initialization*/
rt_hw_usart_init();
rt_console_set_device("uart1");
rt_kprintf("\r\n\r\nSystemInit......\r\n");
/* SPI1 config */
{
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
/* Enable SPI1 Periph clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA
| RCC_APB2Periph_AFIO | RCC_APB2Periph_SPI1,
ENABLE);
/* Configure SPI1 pins: PA5-SCK, PA6-MISO and PA7-MOSI */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/*------------------------ SPI1 configuration ------------------------*/
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;//SPI_Direction_1Line_Tx;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_16;/* 72M/64=1.125M */
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_I2S_DeInit(SPI1);
SPI_Init(SPI1, &SPI_InitStructure);
/* Enable SPI_MASTER */
SPI_Cmd(SPI1, ENABLE);
SPI_CalculateCRC(SPI1, DISABLE);
if (rt_sem_init(&spi1_lock, "spi1lock", 1, RT_IPC_FLAG_FIFO) != RT_EOK)
{
rt_kprintf("init spi1 lock semaphore failed\n");
}
}
}
void SPI_Configuration(void)
{
NVIC_InitTypeDef nvic;
SPI_InitTypeDef SPI_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
SPI_Cmd(SPI1, DISABLE);
DMA_DeInit(DMA1_Channel3);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&SPI1->DR;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32) &fb[0][0];
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
DMA_InitStructure.DMA_BufferSize = VTOTAL;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_Low;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel3, &DMA_InitStructure);
SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Tx;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI1, &SPI_InitStructure);
SPI_CalculateCRC(SPI1, DISABLE);
SPI_Cmd(SPI1, ENABLE);
SPI1->CR2 |= SPI_I2S_DMAReq_Tx;
nvic.NVIC_IRQChannel = DMA1_Channel3_IRQn;
nvic.NVIC_IRQChannelPreemptionPriority = 0;
nvic.NVIC_IRQChannelSubPriority = 0;
nvic.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&nvic);
DMA1_Channel3->CCR &= ~1;
DMA1_Channel3->CNDTR = VTOTAL;
DMA1_Channel3->CMAR = (u32) &fb[0][0];
DMA_ITConfig(DMA1_Channel3, DMA_IT_TC, ENABLE);
}
/**
* @brief Initialize SPI1 and SS pin.
*/
void SPI1_Init(void) {
// Enable GPIO clock for SPI pins
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
/*
* Initialize pins as alternate function, push-pull.
* PA5 = SCK
* PA6 = MISO
* PA7 = MOSI
*/
GPIO_InitTypeDef GPIO_InitStruct;
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_6 | GPIO_Pin_5;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStruct);
// Enable alternate functions of pins
GPIO_PinAFConfig(GPIOA, GPIO_PinSource5, GPIO_AF_SPI1);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource6, GPIO_AF_SPI1);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource7, GPIO_AF_SPI1);
// Software chip select pin, PA4 = SS
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_4;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStruct);
GPIO_SetBits(GPIOA, GPIO_Pin_4); // Set SS line
// Enable SPI1 clock
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);
SPI_InitTypeDef SPI_InitStruct;
SPI_InitStruct.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStruct.SPI_Mode = SPI_Mode_Master;
SPI_InitStruct.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStruct.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStruct.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStruct.SPI_NSS = SPI_NSS_Soft; // software chip select
SPI_InitStruct.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256;
SPI_InitStruct.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStruct.SPI_CRCPolynomial = 7;
SPI_Init(SPI1, &SPI_InitStruct);
SPI_CalculateCRC(SPI1, DISABLE);
SPI_Cmd(SPI1, ENABLE); // enable SPI1
}
void spi2_config(void)//
{
RCC_AHB1PeriphClockCmd(SPI2_GPIO_BUS|SPI2_CS_GPIO_BUS, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
/* Configure SPI1 pins: SCK, MISO and MOSI -------------------------------*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13|GPIO_Pin_15;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(SPI2_GPIO, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(SPI2_GPIO, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = SPI2_CS1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(SPI2_GPIO_CS, &GPIO_InitStructure);
GPIO_PinAFConfig(SPI2_GPIO, GPIO_PinSource13, GPIO_AF_SPI2);
GPIO_PinAFConfig(SPI2_GPIO, GPIO_PinSource14, GPIO_AF_SPI2);
GPIO_PinAFConfig(SPI2_GPIO, GPIO_PinSource15, GPIO_AF_SPI2);
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_16b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_32;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
//SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI2, &SPI_InitStructure);
SPI_CalculateCRC(SPI2, DISABLE);
SPI_Cmd(SPI2, ENABLE);
//GPIO_WriteBit(GPIOB, GPIO_Pin_12, Bit_RESET);
SPI2_GPIO_CS->BSRRH|=SPI2_CS1;
}
void SPI2_config(void)//
{
RCC_AHB1PeriphClockCmd(SPI2_GPIO_BUS, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
/* Configure SPI1 pins: SCK, MISO and MOSI -------------------------------*/
GPIO_InitStructure.GPIO_Pin = SPI2_SCK|SPI2_MOSI;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(SPI2_GPIO, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = SPI2_MISO;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(SPI2_GPIO, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = SPI2_CS1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(SPI2_GPIO_CS, &GPIO_InitStructure);
GPIO_PinAFConfig(SPI2_GPIO, SPI2_SCK_PinSource, GPIO_AF_SPI2);
GPIO_PinAFConfig(SPI2_GPIO, SPI2_MOSI_PinSource, GPIO_AF_SPI2);
GPIO_PinAFConfig(SPI2_GPIO, SPI2_MISO_PinSource, GPIO_AF_SPI2);
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_64;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
//SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI2, &SPI_InitStructure);
/* Enable SPI2 */
SPI_CalculateCRC(SPI2, DISABLE);
SPI_Cmd(SPI2, ENABLE);
SPI2_GPIO_CS->BSRRL|=SPI2_CS1;// pin up SPI2_CS1
}
static void LCD_Config (void)
{
SPI_InitTypeDef SPI_init;
GPIO_InitTypeDef gpio_init;
gpio_init.GPIO_Pin = LCD_PWR_Pin;
gpio_init.GPIO_Speed = GPIO_Speed_50MHz;
gpio_init.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(LCD_PWR_Port, &gpio_init);
gpio_init.GPIO_Pin = LCD_RST_Pin | LCD_DC_Pin | LCD_CS_Pin;
gpio_init.GPIO_Speed = GPIO_Speed_50MHz;
gpio_init.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &gpio_init);
// for SPI interface
gpio_init.GPIO_Pin = LCD_SCK_Pin | LCD_MOSI_Pin;
gpio_init.GPIO_Speed = GPIO_Speed_50MHz;
gpio_init.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOB, &gpio_init);
// enable OLED PWREN vcc = 16v
GPIO_ResetBits(LCD_PWR_Port, LCD_PWR_Pin);
GPIO_ResetBits(LCD_CS_Port, LCD_CS_Pin);
GPIO_ResetBits(LCD_RST_Port, LCD_RST_Pin);
Delay_Ms(10);
GPIO_SetBits(LCD_RST_Port, LCD_RST_Pin);
GPIO_SetBits(LCD_CS_Port, LCD_CS_Pin);
SPI_init.SPI_Direction = SPI_Direction_1Line_Tx;
SPI_init.SPI_Mode = SPI_Mode_Master;
SPI_init.SPI_DataSize = SPI_DataSize_8b;
SPI_init.SPI_CPOL = SPI_CPOL_High;
SPI_init.SPI_CPHA = SPI_CPHA_2Edge;
SPI_init.SPI_NSS = SPI_NSS_Soft;
SPI_init.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;
SPI_init.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_init.SPI_CRCPolynomial = 7;
SPI_I2S_DeInit(SPI2);
SPI_Cmd(SPI2, DISABLE);
SPI_Init(SPI2, &SPI_init);
SPI_Cmd(SPI2, ENABLE);
SPI_CalculateCRC(SPI2, DISABLE);
}
void spi1_config(void)//
{
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB |SPI1_GPIO_BUS, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1,ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
/* Configure SPI1 pins: SCK, MISO and MOSI -------------------------------*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3 |GPIO_Pin_4|GPIO_Pin_5;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = SPI1_CS1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(SPI1_GPIO, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource3, GPIO_AF_SPI1);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource4, GPIO_AF_SPI1);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource5, GPIO_AF_SPI1);
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_16b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_32;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
//SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI1, &SPI_InitStructure);
/* Enable SPI1 */
SPI_CalculateCRC(SPI1, DISABLE);
SPI_Cmd(SPI1, ENABLE);
SPI1_GPIO_CS->BSRRH|=SPI1_CS1;//reset pin SPI1_CS1
}
void SPI_Setup(void){
SPI_InitTypeDef SPI_InitStructure;
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_16;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Cmd(SPI1, DISABLE);
SPI_Init(SPI1, &SPI_InitStructure);
SPI_CalculateCRC(SPI1, DISABLE);
SPI_RxFIFOThresholdConfig(SPI1, SPI_RxFIFOThreshold_QF);
SPI_Cmd(SPI1, ENABLE);
}
void SPI_Configuration(void)
{
SPI_InitTypeDef SPI_InitStructure;
/* SPI configuration -------------------------------------------------------*/
SPI_I2S_DeInit(SPI2);
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_Init(SPI2, &SPI_InitStructure);
SPI_CalculateCRC(SPI2, DISABLE);
/* Enable the SPI peripheral */
SPI_Cmd(SPI2, ENABLE);
}
void Spi_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA|RCC_APB2Periph_SPI1|RCC_APB2Periph_GPIOC, ENABLE );//PORTA,C,SPI1时钟使能
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;//PC4 <---> CS_pin
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
//GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
//GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOC, &GPIO_InitStructure);//PC4 as CS
//GPIO_PinAFConfig(GPIOA, GPIO_PinSource5,GPIO_AF_SPI1);
//GPIO_PinAFConfig(GPIOA, GPIO_PinSource7,GPIO_AF_SPI1);
//GPIO_PinAFConfig(GPIOA, GPIO_PinSource6,GPIO_AF_SPI1);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //PA5.6.7用AF功能
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
//GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
//GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;//设置SPI单向或者双向的数据模式:SPI设置为双线双向全双工
SPI_InitStructure.SPI_Mode = SPI_Mode_Master; //设置SPI工作模式:设置为主SPI
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; //设置SPI的数据大小:SPI发送接收8位帧结构
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low; //选择了串行时钟的稳态:时钟悬空高
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge; //数据捕获于第二个时钟沿
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; //NSS信号由硬件（NSS管脚）还是软件（使用SSI位）管理:内部NSS信号有SSI位控制
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256; //定义波特率预分频的值:波特率预分频值为16
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; //指定数据传输从MSB位还是LSB位开始:数据传输从MSB位开始
SPI_InitStructure.SPI_CRCPolynomial = 7; //CRC值计算的多项式
SPI_Init(SPI1, &SPI_InitStructure);
SPI_CalculateCRC(SPI1, DISABLE);
SPI_Cmd(SPI1,ENABLE);
printf("SPI 1 Inited\n\r");
}
void SPI1_Configuration(void)
{ SPI_InitTypeDef SPI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd (RCC_APB2Periph_SPI1, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; // SS: output
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
SPI1_Deselect();
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_7; // CLK, MOSI: output
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; // MISO: input
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8; // 60MHz/8 = 7.5MHz SPI bitrate
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI1, &SPI_InitStructure);
// SPI_RxFIFOThresholdConfig(SPI1, SPI_RxFIFOThreshold_QF);
SPI_CalculateCRC(SPI1, DISABLE);
SPI_Cmd(SPI1, ENABLE);
}
/**
* Initialise a single Overo device
*/
int32_t PIOS_OVERO_Init(uint32_t *overo_id, const struct pios_overo_cfg *cfg)
{
PIOS_DEBUG_Assert(overo_id);
PIOS_DEBUG_Assert(cfg);
struct pios_overo_dev *overo_dev;
overo_dev = (struct pios_overo_dev *)PIOS_OVERO_alloc();
if (!overo_dev) {
goto out_fail;
}
/* Bind the configuration to the device instance */
overo_dev->cfg = cfg;
overo_dev->writing_buffer = 1; // First writes to second buffer
/* Put buffers to a known state */
memset(&overo_dev->tx_buffer[0][0], 0xFF, PACKET_SIZE);
memset(&overo_dev->tx_buffer[1][0], 0xFF, PACKET_SIZE);
memset(&overo_dev->rx_buffer[0][0], 0xFF, PACKET_SIZE);
memset(&overo_dev->rx_buffer[1][0], 0xFF, PACKET_SIZE);
/*
* Enable the SPI device
*
* 1. Enable the SPI port
* 2. Enable DMA with circular buffered DMA (validate config)
* 3. Enable the DMA Tx IRQ
*/
// PIOS_Assert(overo_dev->cfg->dma.tx-> == CIRCULAR);
// PIOS_Assert(overo_dev->cfg->dma.rx-> == CIRCULAR);
/* only legal for single-slave config */
PIOS_Assert(overo_dev->cfg->slave_count == 1);
SPI_SSOutputCmd(overo_dev->cfg->regs, DISABLE);
/* Initialize the GPIO pins */
/* note __builtin_ctz() due to the difference between GPIO_PinX and GPIO_PinSourceX */
GPIO_PinAFConfig(overo_dev->cfg->sclk.gpio,
__builtin_ctz(overo_dev->cfg->sclk.init.GPIO_Pin),
overo_dev->cfg->remap);
GPIO_PinAFConfig(overo_dev->cfg->mosi.gpio,
__builtin_ctz(overo_dev->cfg->mosi.init.GPIO_Pin),
overo_dev->cfg->remap);
GPIO_PinAFConfig(overo_dev->cfg->miso.gpio,
__builtin_ctz(overo_dev->cfg->miso.init.GPIO_Pin),
overo_dev->cfg->remap);
GPIO_PinAFConfig(overo_dev->cfg->ssel[0].gpio,
__builtin_ctz(overo_dev->cfg->ssel[0].init.GPIO_Pin),
overo_dev->cfg->remap);
GPIO_Init(overo_dev->cfg->sclk.gpio, (GPIO_InitTypeDef *)&(overo_dev->cfg->sclk.init));
GPIO_Init(overo_dev->cfg->mosi.gpio, (GPIO_InitTypeDef *)&(overo_dev->cfg->mosi.init));
GPIO_Init(overo_dev->cfg->miso.gpio, (GPIO_InitTypeDef *)&(overo_dev->cfg->miso.init));
/* Configure circular buffer targets. Configure 0 to be initially active */
DMA_InitTypeDef dma_init;
DMA_DeInit(overo_dev->cfg->dma.rx.channel);
dma_init = overo_dev->cfg->dma.rx.init;
dma_init.DMA_Memory0BaseAddr = (uint32_t)overo_dev->rx_buffer[0];
dma_init.DMA_MemoryInc = DMA_MemoryInc_Enable;
dma_init.DMA_BufferSize = PACKET_SIZE;
DMA_Init(overo_dev->cfg->dma.rx.channel, &dma_init);
DMA_DoubleBufferModeConfig(overo_dev->cfg->dma.rx.channel, (uint32_t)overo_dev->rx_buffer[1], DMA_Memory_0);
DMA_DoubleBufferModeCmd(overo_dev->cfg->dma.rx.channel, ENABLE);
DMA_DeInit(overo_dev->cfg->dma.tx.channel);
dma_init = overo_dev->cfg->dma.tx.init;
dma_init.DMA_Memory0BaseAddr = (uint32_t)overo_dev->tx_buffer[0];
dma_init.DMA_MemoryInc = DMA_MemoryInc_Enable;
dma_init.DMA_BufferSize = PACKET_SIZE;
DMA_Init(overo_dev->cfg->dma.tx.channel, &dma_init);
DMA_DoubleBufferModeConfig(overo_dev->cfg->dma.tx.channel, (uint32_t)overo_dev->tx_buffer[1], DMA_Memory_0);
DMA_DoubleBufferModeCmd(overo_dev->cfg->dma.tx.channel, ENABLE);
/* Set the packet size */
DMA_SetCurrDataCounter(overo_dev->cfg->dma.rx.channel, PACKET_SIZE);
DMA_SetCurrDataCounter(overo_dev->cfg->dma.tx.channel, PACKET_SIZE);
/* Initialize the SPI block */
SPI_DeInit(overo_dev->cfg->regs);
SPI_Init(overo_dev->cfg->regs, (SPI_InitTypeDef *)&(overo_dev->cfg->init));
SPI_CalculateCRC(overo_dev->cfg->regs, DISABLE);
/* Enable SPI */
SPI_Cmd(overo_dev->cfg->regs, ENABLE);
/* Enable SPI interrupts to DMA */
SPI_I2S_DMACmd(overo_dev->cfg->regs, SPI_I2S_DMAReq_Tx | SPI_I2S_DMAReq_Rx, ENABLE);
/* Configure DMA interrupt */
NVIC_Init((NVIC_InitTypeDef *)&(overo_dev->cfg->dma.irq.init));
DMA_ITConfig(overo_dev->cfg->dma.tx.channel, DMA_IT_TC, ENABLE);
/* Enable the DMA channels */
DMA_Cmd(overo_dev->cfg->dma.tx.channel, ENABLE);
DMA_Cmd(overo_dev->cfg->dma.rx.channel, ENABLE);
*overo_id = (uint32_t)overo_dev;
return 0;
out_fail:
return -1;
}
void InitSpi(SPI_TypeDef *_s, uint16_t _mode,
GPIO_TypeDef *_clkG, uint32_t _clkP,
GPIO_TypeDef *_mosiG, uint32_t _mosiP,
GPIO_TypeDef *_misoG, uint32_t _misoP,
uint16_t _CPOL,uint16_t _CPHA)
{
assert_param(IS_SPI_CPOL(_CPOL));
assert_param(IS_SPI_CPHA(_CPHA));
if (_s == SPI1)
{
RCC_APB2PeriphClockCmd(GetRCS_RCC_APB2Periph_SPI(_s), ENABLE);
}
else
{
RCC_APB1PeriphClockCmd(GetRCS_RCC_APB1Periph_SPI(_s), ENABLE);
}
RCC_AHB1PeriphClockCmd(GetRCS_RCC_AHB1Periph_GPIO(_clkG), ENABLE);
RCC_AHB1PeriphClockCmd(GetRCS_RCC_AHB1Periph_GPIO(_mosiG), ENABLE);
RCC_AHB1PeriphClockCmd(GetRCS_RCC_AHB1Periph_GPIO(_misoG), ENABLE);
GPIO_PinAFConfig(_clkG, GetRCS_GPIO_PinSource(_clkP), GetRCS_GPIO_AF_SPI(_s));
GPIO_PinAFConfig(_mosiG, GetRCS_GPIO_PinSource(_mosiP), GetRCS_GPIO_AF_SPI(_s));
GPIO_PinAFConfig(_misoG, GetRCS_GPIO_PinSource(_misoP), GetRCS_GPIO_AF_SPI(_s));
GPIO_InitTypeDef GPIO_Struct;
GPIO_StructInit(&GPIO_Struct);
GPIO_Struct.GPIO_Pin = _clkP;
GPIO_Struct.GPIO_Mode = GPIO_Mode_AF;
GPIO_Struct.GPIO_Speed = GPIO_Speed_50MHz;
#ifdef OD_OUTPUT
GPIO_Struct.GPIO_OType = GPIO_OType_OD;
GPIO_Struct.GPIO_PuPd = GPIO_PuPd_NOPULL;
#else
GPIO_Struct.GPIO_OType = GPIO_OType_PP;
GPIO_Struct.GPIO_PuPd = GPIO_PuPd_UP;
#endif
GPIO_Init(_clkG, &GPIO_Struct);
GPIO_StructInit(&GPIO_Struct);
GPIO_Struct.GPIO_Pin = _mosiP;
GPIO_Struct.GPIO_Mode = GPIO_Mode_AF;
GPIO_Struct.GPIO_Speed = GPIO_Speed_50MHz;
#ifdef OD_OUTPUT
GPIO_Struct.GPIO_OType = GPIO_OType_OD;
GPIO_Struct.GPIO_PuPd = GPIO_PuPd_NOPULL;
#else
GPIO_Struct.GPIO_OType = GPIO_OType_PP;
GPIO_Struct.GPIO_PuPd = GPIO_PuPd_UP;
#endif
GPIO_Init(_mosiG, &GPIO_Struct);
GPIO_StructInit(&GPIO_Struct);
GPIO_Struct.GPIO_Pin = _misoP;
GPIO_Struct.GPIO_Mode = GPIO_Mode_AF;
GPIO_Struct.GPIO_Speed = GPIO_Speed_50MHz;
#ifdef OD_OUTPUT
GPIO_Struct.GPIO_OType = GPIO_OType_OD;
GPIO_Struct.GPIO_PuPd = GPIO_PuPd_NOPULL;
#else
GPIO_Struct.GPIO_OType = GPIO_OType_PP;
GPIO_Struct.GPIO_PuPd = GPIO_PuPd_UP;
#endif
GPIO_Init(_misoG, &GPIO_Struct);
SPI_InitTypeDef SPI_InitStructure;
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = _mode;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_16b;
SPI_InitStructure.SPI_CPOL = _CPOL;
SPI_InitStructure.SPI_CPHA = _CPHA;
if (_mode == SPI_Mode_Master)
{
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
}
else
{
SPI_InitStructure.SPI_NSS = SPI_NSS_Hard;
}
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_32;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(_s, &SPI_InitStructure);
SPI_CalculateCRC(_s,DISABLE);
SPI_Cmd(_s, ENABLE);
SPI_CalculateCRC(_s,DISABLE);
}
void spiInit2(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
GPIO_InitTypeDef GPIO_InitStructure1;
GPIO_InitTypeDef GPIO_InitStructure2;
GPIO_InitTypeDef GPIO_InitStructure3;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOE, ENABLE);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource10, GPIO_AF_SPI2);
GPIO_StructInit(&GPIO_InitStruct);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOE, &GPIO_InitStruct);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOD, &GPIO_InitStruct);
GPIOE->BSRRL = GPIO_Pin_10; // set PE10 high
SPI_I2S_DeInit(SPI_BUSE2);
// enable clock for used IO pins
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
GPIO_PinAFConfig(SPI_GPIO_2, SPI_SCK_PIN_SOURCE_2, GPIO_AF_SPI2);
GPIO_PinAFConfig(SPI_GPIO_2, SPI_MISO_PIN_SOURCE_2, GPIO_AF_SPI2);
GPIO_PinAFConfig(SPI_GPIO_2, SPI_MOSI_PIN_SOURCE_2, GPIO_AF_SPI2);
// Init pins
GPIO_InitStructure1.GPIO_Pin = SPI_SCK_PIN_2;
GPIO_InitStructure1.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure1.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure1.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure1.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(SPI_GPIO_2, &GPIO_InitStructure1);
GPIO_InitStructure2.GPIO_Pin = SPI_MISO_PIN_2;
GPIO_InitStructure2.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure2.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure2.GPIO_OType = GPIO_OType_OD;
GPIO_InitStructure2.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(SPI_GPIO_2, &GPIO_InitStructure2);
GPIO_InitStructure3.GPIO_Pin = SPI_MOSI_PIN_2;
GPIO_InitStructure3.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure3.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure3.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure3.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(SPI_GPIO_2, &GPIO_InitStructure3);
SPI_I2S_DeInit(SPI_BUSE2);
// Enable SPI2 clock
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
SPI_InitTypeDef SPI_InitStructure;
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_64;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI_BUSE2, &SPI_InitStructure);
SPI_CalculateCRC(SPI_BUSE2, DISABLE);
SPI_Cmd(SPI_BUSE2, ENABLE);
}
void rt_hw_board_init(void)
{
//NAND_IDTypeDef NAND_ID;
/* Configure the system clocks */
SystemInit();
all_device_reset();
/* NVIC Configuration */
NVIC_Configuration();
/* Configure the SysTick */
SysTick_Config( SystemCoreClock / RT_TICK_PER_SECOND );
/* Console Initialization*/
rt_hw_usart_init();
#if STM32_CONSOLE_USART == 1
rt_console_set_device("uart1");
#elif STM32_CONSOLE_USART == 2
rt_console_set_device("uart2");
#elif STM32_CONSOLE_USART == 3
rt_console_set_device("uart3");
#endif
rt_kprintf("\r\n\r\nSystemInit......\r\n");
/* SRAM init */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
FSMC_SRAM_Init();
/* memtest */
{
unsigned char * p_extram = (unsigned char *)STM32_EXT_SRAM_BEGIN;
unsigned int temp;
rt_kprintf("\r\nmem testing....");
for(temp=0; temp<(STM32_EXT_SRAM_END-STM32_EXT_SRAM_BEGIN); temp++)
{
*p_extram++ = (unsigned char)temp;
}
p_extram = (unsigned char *)STM32_EXT_SRAM_BEGIN;
for(temp=0; temp<(STM32_EXT_SRAM_END-STM32_EXT_SRAM_BEGIN); temp++)
{
if( *p_extram++ != (unsigned char)temp )
{
rt_kprintf("\rmemtest fail @ %08X\r\nsystem halt!!!!!",(unsigned int)p_extram);
while(1);
}
}
rt_kprintf("\rmem test pass!!\r\n");
}/* memtest */
/* SPI1 config */
{
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
/* Enable SPI1 Periph clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA
| RCC_APB2Periph_AFIO | RCC_APB2Periph_SPI1,
ENABLE);
/* Configure SPI1 pins: PA5-SCK, PA6-MISO and PA7-MOSI */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/*------------------------ SPI1 configuration ------------------------*/
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;//SPI_Direction_1Line_Tx;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_64;/* 72M/64=1.125M */
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_I2S_DeInit(SPI1);
SPI_Init(SPI1, &SPI_InitStructure);
/* Enable SPI_MASTER */
SPI_Cmd(SPI1, ENABLE);
SPI_CalculateCRC(SPI1, DISABLE);
if (rt_sem_init(&spi1_lock, "spi1lock", 1, RT_IPC_FLAG_FIFO) != RT_EOK)
{
rt_kprintf("init spi1 lock semaphore failed\n");
}
}
}/* rt_hw_board_init */
void SST25V_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
/* Enable DF_SPI Periph clock */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB,ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2,ENABLE);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_SPI2 );
GPIO_PinAFConfig(GPIOB, GPIO_PinSource14, GPIO_AF_SPI2 );
GPIO_PinAFConfig(GPIOB, GPIO_PinSource15, GPIO_AF_SPI2 );
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
/*!< SPI SCK pin configuration */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/*!< SPI MOSI pin configuration */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/*!< SPI MISO pin configuration */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15;
GPIO_Init(GPIOB, &GPIO_InitStructure);
//------- CS _pin
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOD, &GPIO_InitStructure);
//------- WP _pin
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOD, &GPIO_InitStructure);
/*------------------------ DF_SPI configuration ------------------------*/
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;//SPI_Direction_1Line_Tx;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8;/* 42M/64=1.125M */
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
//SPI1->CR2=0x04; //NSS ---SSOE
// SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
//SPI_InitStructure.SPI_Mode = SPI_Mode_Master; //MSTR
SPI_I2S_DeInit(DF_SPI);
SPI_Init(DF_SPI, &SPI_InitStructure);
/* Enable SPI_MASTER */
SPI_Cmd(DF_SPI, ENABLE);
SPI_CalculateCRC(DF_SPI, DISABLE);
SST25V_CS_HIGH();
SST25V_WP_HIGH();
//SST25V_HOLD_HIGH();
// SST25V_EnableWriteStatusRegister();
// SST25V_WriteStatusRegister(0x02);
SST25V_DBSY();
}
OSStatus MicoSpiInitialize( const mico_spi_device_t* spi )
{
GPIO_InitTypeDef gpio_init_structure;
OSStatus result;
SPI_InitTypeDef spi_init;
check_string( spi != NULL, "Bad args");
MicoMcuPowerSaveConfig(false);
/* Init SPI GPIOs */
gpio_init_structure.GPIO_Mode = GPIO_Mode_AF;
gpio_init_structure.GPIO_OType = GPIO_OType_PP;
gpio_init_structure.GPIO_Speed = GPIO_Speed_100MHz;
gpio_init_structure.GPIO_Pin = ((uint32_t) (1 << spi_mapping[spi->port].pin_clock->number)) |
((uint32_t) (1 << spi_mapping[spi->port].pin_miso->number )) |
((uint32_t) (1 << spi_mapping[spi->port].pin_mosi->number ));
GPIO_Init( spi_mapping[spi->port].pin_clock->bank, &gpio_init_structure );
/* Init the chip select GPIO */
MicoGpioInitialize(spi->chip_select, OUTPUT_PUSH_PULL);
MicoGpioOutputHigh(spi->chip_select);
GPIO_PinAFConfig( spi_mapping[spi->port].pin_clock->bank, spi_mapping[spi->port].pin_clock->number, spi_mapping[spi->port].gpio_af );
GPIO_PinAFConfig( spi_mapping[spi->port].pin_miso->bank, spi_mapping[spi->port].pin_miso->number, spi_mapping[spi->port].gpio_af );
GPIO_PinAFConfig( spi_mapping[spi->port].pin_mosi->bank, spi_mapping[spi->port].pin_mosi->number, spi_mapping[spi->port].gpio_af );
/* Configure baudrate */
result = wiced_spi_configure_baudrate( spi->speed, &spi_init.SPI_BaudRatePrescaler );
if ( result != kNoErr )
{
return result;
}
/* Configure data-width */
if ( spi->bits == 8 )
{
spi_init.SPI_DataSize = SPI_DataSize_8b;
}
else if ( spi->bits == 16 )
{
if ( spi->mode & SPI_USE_DMA )
{
/* 16 bit mode is not supported for a DMA */
return kGeneralErr;
}
spi_init.SPI_DataSize = SPI_DataSize_16b;
}
else
{
/* Requested mode is not supported */
return kOptionErr;
}
/* Configure MSB or LSB */
if ( spi->mode & SPI_MSB_FIRST )
{
spi_init.SPI_FirstBit = SPI_FirstBit_MSB;
}
else
{
spi_init.SPI_FirstBit = SPI_FirstBit_LSB;
}
/* Configure mode CPHA and CPOL */
if ( spi->mode & SPI_CLOCK_IDLE_HIGH )
{
spi_init.SPI_CPOL = SPI_CPOL_High;
}
else
{
spi_init.SPI_CPOL = SPI_CPOL_Low;
}
if ( spi->mode & SPI_CLOCK_RISING_EDGE )
{
spi_init.SPI_CPHA = ( spi->mode & SPI_CLOCK_IDLE_HIGH )? SPI_CPHA_2Edge : SPI_CPHA_1Edge;
}
else
{
spi_init.SPI_CPHA = ( spi->mode & SPI_CLOCK_IDLE_HIGH )? SPI_CPHA_1Edge : SPI_CPHA_2Edge;
}
spi_init.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
spi_init.SPI_Mode = SPI_Mode_Master;
spi_init.SPI_NSS = SPI_NSS_Soft;
SPI_CalculateCRC( spi_mapping[spi->port].spi_regs, DISABLE );
/* Enable SPI peripheral clock */
spi_mapping[spi->port].peripheral_clock_func( spi_mapping[spi->port].peripheral_clock_reg, ENABLE );
/* Init and enable SPI */
SPI_Init( spi_mapping[spi->port].spi_regs, &spi_init );
SPI_Cmd ( spi_mapping[spi->port].spi_regs, ENABLE );
MicoMcuPowerSaveConfig(true);
current_spi_device = (mico_spi_device_t*)spi;
return kNoErr;
}
/*******************************************************************************
* Function Name : main
* Description : Main program
* Input : None
* Output : None
* Return : None
*******************************************************************************/
int main(void)
{
#ifdef DEBUG
debug();
#endif
/* System Clocks Configuration */
RCC_Configuration();
/* NVIC configuration */
NVIC_Configuration();
/* Configure the GPIO ports */
GPIO_Configuration();
/* SPI1 configuration ------------------------------------------------------*/
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = CRCPolynomial;
SPI_Init(SPI1, &SPI_InitStructure);
/* SPI2 configuration ------------------------------------------------------*/
SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;
SPI_Init(SPI2, &SPI_InitStructure);
/* DMA1 Channel2 configuration ----------------------------------------------*/
DMA_DeInit(DMA1_Channel2);
DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)SPI1_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)SPI1_Buffer_Rx;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = BufferSize;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel2, &DMA_InitStructure);
/* DMA1 Channel3 configuration ----------------------------------------------*/
DMA_DeInit(DMA1_Channel3);
DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)SPI1_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)SPI1_Buffer_Tx;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
DMA_InitStructure.DMA_Priority = DMA_Priority_Low;
DMA_Init(DMA1_Channel3, &DMA_InitStructure);
/* DMA1 Channel4 configuration ----------------------------------------------*/
DMA_DeInit(DMA1_Channel4);
DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)SPI2_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)SPI2_Buffer_Rx;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
DMA_Init(DMA1_Channel4, &DMA_InitStructure);
/* DMA1 Channel5 configuration ----------------------------------------------*/
DMA_DeInit(DMA1_Channel5);
DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)SPI2_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)SPI2_Buffer_Tx;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
DMA_InitStructure.DMA_Priority = DMA_Priority_Medium;
DMA_Init(DMA1_Channel5, &DMA_InitStructure);
/* Enable SPI1 DMA Tx request */
SPI_I2S_DMACmd(SPI1, SPI_I2S_DMAReq_Tx, ENABLE);
/* Enable SPI1 DMA Rx request */
SPI_I2S_DMACmd(SPI1, SPI_I2S_DMAReq_Rx, ENABLE);
/* Enable SPI2 DMA Tx request */
SPI_I2S_DMACmd(SPI2, SPI_I2S_DMAReq_Tx, ENABLE);
/* Enable SPI2 DMA Rx request */
SPI_I2S_DMACmd(SPI2, SPI_I2S_DMAReq_Rx, ENABLE);
/* Enable SPI1 CRC calculation */
SPI_CalculateCRC(SPI1, ENABLE);
/* Enable SPI2 CRC calculation */
SPI_CalculateCRC(SPI2, ENABLE);
/* Enable SPI2 */
SPI_Cmd(SPI2, ENABLE);
/* Enable SPI1 */
SPI_Cmd(SPI1, ENABLE);
/* Enable DMA1 channel5, channel4, channel3 and channel2 */
DMA_Cmd(DMA1_Channel2, ENABLE);
DMA_Cmd(DMA1_Channel4, ENABLE);
DMA_Cmd(DMA1_Channel5, ENABLE);
DMA_Cmd(DMA1_Channel3, ENABLE);
/* Transfer complete */
while(!DMA_GetFlagStatus(DMA1_FLAG_TC2));
while(!DMA_GetFlagStatus(DMA1_FLAG_TC4));
while(!DMA_GetFlagStatus(DMA1_FLAG_TC5));
while(!DMA_GetFlagStatus(DMA1_FLAG_TC3));
/* Wait for SPI1 data reception: CRC transmitted by SPI2 */
while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE)==RESET);
/* Wait for SPI2 data reception: CRC transmitted by SPI1 */
while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE)==RESET);
/* Check the corectness of written dada */
TransferStatus1 = Buffercmp(SPI2_Buffer_Rx, SPI1_Buffer_Tx, BufferSize);
TransferStatus2 = Buffercmp(SPI1_Buffer_Rx, SPI2_Buffer_Tx, BufferSize);
/* TransferStatus1, TransferStatus2 = PASSED, if the data transmitted and received
are correct */
/* TransferStatus1, TransferStatus2 = FAILED, if the data transmitted and received
are different */
/* Test on the SPI1 CRCR ERROR flag */
if ((SPI_I2S_GetFlagStatus(SPI1, SPI_FLAG_CRCERR)) != RESET)
{
TransferStatus1 = FAILED;
}
/* Test on the SPI2 CRCR ERROR flag */
if ((SPI_I2S_GetFlagStatus(SPI2, SPI_FLAG_CRCERR)) != RESET)
{
TransferStatus2 = FAILED;
}
/* Read SPI1 received CRC value */
SPI1CRCValue = SPI_I2S_ReceiveData(SPI1);
/* Read SPI2 received CRC value */
SPI2CRCValue = SPI_I2S_ReceiveData(SPI2);
while (1)
{
}
}
/***********************************************************
* Function:
* Description:
* Input:
* Input:
* Output:
* Return:
* Others:
***********************************************************/
void sst25_init( void )
{
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
uint32_t delay_counter;
/* Enable DF_SPI Periph clock */
RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_GPIOB, ENABLE );
RCC_APB1PeriphClockCmd( RCC_APB1Periph_SPI2, ENABLE );
GPIO_PinAFConfig( GPIOB, GPIO_PinSource13, GPIO_AF_SPI2 );
GPIO_PinAFConfig( GPIOB, GPIO_PinSource14, GPIO_AF_SPI2 );
GPIO_PinAFConfig( GPIOB, GPIO_PinSource15, GPIO_AF_SPI2 );
RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_GPIOD, ENABLE );
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_25MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
/*!< SPI SCK pin configuration */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
GPIO_Init( GPIOB, &GPIO_InitStructure );
/*!< SPI MOSI pin configuration */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;
GPIO_Init( GPIOB, &GPIO_InitStructure );
/*!< SPI MISO pin configuration */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15;
GPIO_Init( GPIOB, &GPIO_InitStructure );
//------- CS _pin
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init( GPIOD, &GPIO_InitStructure );
//PA4 pin: CS SD_CARD
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init( GPIOA, &GPIO_InitStructure );
GPIO_SetBits(GPIOA,GPIO_Pin_4);
//------- WP _pin
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init( GPIOD, &GPIO_InitStructure );
/*------------------------ DF_SPI configuration ------------------------*/
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; //SPI_Direction_1Line_Tx;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4; /* 42M/4=10.5M */
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
//SPI1->CR2=0x04; //NSS ---SSOE
// SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
//SPI_InitStructure.SPI_Mode = SPI_Mode_Master; //MSTR
SPI_I2S_DeInit( SPI2 );
SPI_Init( SPI2, &SPI_InitStructure );
/* Enable SPI_MASTER */
SPI_Cmd( SPI2, ENABLE );
SPI_CalculateCRC( SPI2, DISABLE );
DF_CS_1;
DF_WP_0;
DF_CS_0;
spi_tx( 0x50 );
DF_CS_1;
delay(3);
DF_CS_0;
spi_tx( 0x01 );
spi_tx( 0x00 );
DF_CS_1;
//delay(3);
//DF_CS_0;
//spi_tx( DBSY );
//DF_CS_1;
sst25_info( );
//rt_sem_init( &sem_dataflash, "sem_df", 0, RT_IPC_FLAG_FIFO );
//rt_sem_release( &sem_dataflash );
}
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32f10x_xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f10x.c file
*/
/* System clocks configuration ---------------------------------------------*/
RCC_Configuration();
/* GPIO configuration ------------------------------------------------------*/
GPIO_Configuration();
/* SPI1 configuration ------------------------------------------------------*/
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_16b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI1, &SPI_InitStructure);
/* SPI2 configuration ------------------------------------------------------*/
SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;
SPI_Init(SPI2, &SPI_InitStructure);
/* Enable SPI1 CRC calculation */
SPI_CalculateCRC(SPI1, ENABLE);
/* Enable SPI2 CRC calculation */
SPI_CalculateCRC(SPI2, ENABLE);
/* Enable SPI1 */
SPI_Cmd(SPI1, ENABLE);
/* Enable SPI2 */
SPI_Cmd(SPI2, ENABLE);
/* Transfer procedure */
while (TxIdx < BufferSize - 1)
{
/* Wait for SPI1 Tx buffer empty */
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
/* Send SPI2 data */
SPI_I2S_SendData(SPI2, SPI2_Buffer_Tx[TxIdx]);
/* Send SPI1 data */
SPI_I2S_SendData(SPI1, SPI1_Buffer_Tx[TxIdx++]);
/* Wait for SPI2 data reception */
while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET);
/* Read SPI2 received data */
SPI2_Buffer_Rx[RxIdx] = SPI_I2S_ReceiveData(SPI2);
/* Wait for SPI1 data reception */
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
/* Read SPI1 received data */
SPI1_Buffer_Rx[RxIdx++] = SPI_I2S_ReceiveData(SPI1);
}
/* Wait for SPI1 Tx buffer empty */
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
/* Wait for SPI2 Tx buffer empty */
while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET);
/* Send last SPI2_Buffer_Tx data */
SPI_I2S_SendData(SPI2, SPI2_Buffer_Tx[TxIdx]);
/* Enable SPI2 CRC transmission */
SPI_TransmitCRC(SPI2);
/* Send last SPI1_Buffer_Tx data */
SPI_I2S_SendData(SPI1, SPI1_Buffer_Tx[TxIdx]);
/* Enable SPI1 CRC transmission */
SPI_TransmitCRC(SPI1);
/* Wait for SPI1 last data reception */
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
/* Read SPI1 last received data */
SPI1_Buffer_Rx[RxIdx] = SPI_I2S_ReceiveData(SPI1);
/* Wait for SPI2 last data reception */
while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET);
/* Read SPI2 last received data */
SPI2_Buffer_Rx[RxIdx] = SPI_I2S_ReceiveData(SPI2);
/* Wait for SPI1 data reception: CRC transmitted by SPI2 */
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
/* Wait for SPI2 data reception: CRC transmitted by SPI1 */
while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET);
/* Check the received data with the send ones */
TransferStatus1 = Buffercmp(SPI2_Buffer_Rx, SPI1_Buffer_Tx, BufferSize);
TransferStatus2 = Buffercmp(SPI1_Buffer_Rx, SPI2_Buffer_Tx, BufferSize);
/* TransferStatus1, TransferStatus2 = PASSED, if the data transmitted and received
are correct */
/* TransferStatus1, TransferStatus2 = FAILED, if the data transmitted and received
are different */
/* Test on the SPI1 CRC Error flag */
if ((SPI_I2S_GetFlagStatus(SPI1, SPI_FLAG_CRCERR)) == SET)
{
TransferStatus2 = FAILED;
}
/* Test on the SPI2 CRC Error flag */
if ((SPI_I2S_GetFlagStatus(SPI2, SPI_FLAG_CRCERR)) == SET)
{
TransferStatus1 = FAILED;
}
/* Read SPI1 received CRC value */
CRC1Value = SPI_I2S_ReceiveData(SPI1);
/* Read SPI2 received CRC value */
CRC2Value = SPI_I2S_ReceiveData(SPI2);
while (1)
{}
}
platform_result_t platform_spi_init( const platform_spi_t* spi, const platform_spi_config_t* config )
{
SPI_InitTypeDef spi_init;
platform_result_t result;
uint8_t spi_number;
wiced_assert( "bad argument", ( spi != NULL ) && ( config != NULL ) );
platform_mcu_powersave_disable();
spi_number = platform_spi_get_port_number( spi->port );
/* Init SPI GPIOs */
platform_gpio_set_alternate_function( spi->pin_clock->port, spi->pin_clock->pin_number, GPIO_OType_PP, GPIO_PuPd_NOPULL, spi->gpio_af );
platform_gpio_set_alternate_function( spi->pin_mosi->port, spi->pin_mosi->pin_number, GPIO_OType_PP, GPIO_PuPd_NOPULL, spi->gpio_af );
platform_gpio_set_alternate_function( spi->pin_miso->port, spi->pin_miso->pin_number, GPIO_OType_PP, GPIO_PuPd_NOPULL, spi->gpio_af );
/* Init the chip select GPIO */
platform_gpio_init( config->chip_select, OUTPUT_PUSH_PULL );
platform_gpio_output_high( config->chip_select );
/* Calculate prescaler */
result = calculate_prescaler( config->speed, &spi_init.SPI_BaudRatePrescaler );
if ( result != PLATFORM_SUCCESS )
{
platform_mcu_powersave_enable();
return result;
}
/* Configure data-width */
if ( config->bits == 8 )
{
spi_init.SPI_DataSize = SPI_DataSize_8b;
}
else if ( config->bits == 16 )
{
if ( config->mode & SPI_USE_DMA )
{
platform_mcu_powersave_enable();
/* 16 bit mode is not supported for a DMA */
return PLATFORM_UNSUPPORTED;
}
spi_init.SPI_DataSize = SPI_DataSize_16b;
}
else
{
platform_mcu_powersave_enable();
/* Requested mode is not supported */
return PLATFORM_UNSUPPORTED;
}
/* Configure MSB or LSB */
if ( config->mode & SPI_MSB_FIRST )
{
spi_init.SPI_FirstBit = SPI_FirstBit_MSB;
}
else
{
spi_init.SPI_FirstBit = SPI_FirstBit_LSB;
}
/* Configure mode CPHA and CPOL */
if ( config->mode & SPI_CLOCK_IDLE_HIGH )
{
spi_init.SPI_CPOL = SPI_CPOL_High;
}
else
{
spi_init.SPI_CPOL = SPI_CPOL_Low;
}
if ( config->mode & SPI_CLOCK_RISING_EDGE )
{
spi_init.SPI_CPHA = ( config->mode & SPI_CLOCK_IDLE_HIGH ) ? SPI_CPHA_2Edge : SPI_CPHA_1Edge;
}
else
{
spi_init.SPI_CPHA = ( config->mode & SPI_CLOCK_IDLE_HIGH ) ? SPI_CPHA_1Edge : SPI_CPHA_2Edge;
}
/* Enable SPI peripheral clock */
spi_peripheral_clock_functions[ spi_number ]( spi_peripheral_clocks[ spi_number ], ENABLE );
spi_init.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
spi_init.SPI_Mode = SPI_Mode_Master;
spi_init.SPI_NSS = SPI_NSS_Soft;
spi_init.SPI_CRCPolynomial = 0x7; /* reset value */
SPI_CalculateCRC( spi->port, DISABLE );
/* Init and enable SPI */
SPI_Init( spi->port, &spi_init );
SPI_Cmd ( spi->port, ENABLE );
platform_mcu_powersave_enable();
return WICED_SUCCESS;
}
OSStatus platform_spi_init( platform_spi_driver_t* driver, const platform_spi_t* peripheral, const platform_spi_config_t* config )
{
SPI_InitTypeDef spi_init;
OSStatus err;
platform_mcu_powersave_disable();
require_action_quiet( ( driver != NULL ) && ( peripheral != NULL ) && ( config != NULL ), exit, err = kParamErr);
/* Calculate prescaler */
err = calculate_prescaler( config->speed, &spi_init.SPI_BaudRatePrescaler );
require_noerr(err, exit);
/* Configure data-width */
if ( config->bits == 8 )
{
spi_init.SPI_DataSize = SPI_DataSize_8b;
}
else if ( config->bits == 16 )
{
require_action( !(config->mode & SPI_USE_DMA), exit, err = kUnsupportedErr);
spi_init.SPI_DataSize = SPI_DataSize_16b;
}
else
{
err = kUnsupportedErr;
goto exit;
}
/* Configure MSB or LSB */
if ( config->mode & SPI_MSB_FIRST )
{
spi_init.SPI_FirstBit = SPI_FirstBit_MSB;
}
else
{
spi_init.SPI_FirstBit = SPI_FirstBit_LSB;
}
/* Configure mode CPHA and CPOL */
if ( config->mode & SPI_CLOCK_IDLE_HIGH )
{
spi_init.SPI_CPOL = SPI_CPOL_High;
}
else
{
spi_init.SPI_CPOL = SPI_CPOL_Low;
}
if ( config->mode & SPI_CLOCK_RISING_EDGE )
{
spi_init.SPI_CPHA = ( config->mode & SPI_CLOCK_IDLE_HIGH ) ? SPI_CPHA_2Edge : SPI_CPHA_1Edge;
}
else
{
spi_init.SPI_CPHA = ( config->mode & SPI_CLOCK_IDLE_HIGH ) ? SPI_CPHA_1Edge : SPI_CPHA_2Edge;
}
driver->peripheral = (platform_spi_t *)peripheral;
/* Init SPI GPIOs */
platform_gpio_set_alternate_function( peripheral->pin_clock->port, peripheral->pin_clock->pin_number, GPIO_OType_PP, GPIO_PuPd_NOPULL, peripheral->gpio_af );
platform_gpio_set_alternate_function( peripheral->pin_mosi->port, peripheral->pin_mosi->pin_number, GPIO_OType_PP, GPIO_PuPd_NOPULL, peripheral->gpio_af );
platform_gpio_set_alternate_function( peripheral->pin_miso->port, peripheral->pin_miso->pin_number, GPIO_OType_PP, GPIO_PuPd_UP, peripheral->gpio_af );
/* Init the chip select GPIO */
platform_gpio_init( config->chip_select, OUTPUT_PUSH_PULL );
platform_gpio_output_high( config->chip_select );
/* Enable SPI peripheral clock */
(peripheral->peripheral_clock_func)( peripheral->peripheral_clock_reg, ENABLE );
(peripheral->peripheral_clock_func)( peripheral->peripheral_clock_reg, ENABLE );
SPI_I2S_DeInit( peripheral->port );
spi_init.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
spi_init.SPI_Mode = SPI_Mode_Master;
spi_init.SPI_NSS = SPI_NSS_Soft;
spi_init.SPI_CRCPolynomial = 0x7; /* reset value */
SPI_CalculateCRC( peripheral->port, DISABLE );
/* Init and enable SPI */
SPI_Init( peripheral->port, &spi_init );
SPI_I2S_DMACmd( peripheral->port, SPI_I2S_DMAReq_Rx, DISABLE );
SPI_I2S_DMACmd( peripheral->port, SPI_I2S_DMAReq_Tx, DISABLE );
SPI_Cmd ( peripheral->port, ENABLE );
if ( config->mode & SPI_USE_DMA ){
DMA_DeInit( peripheral->rx_dma.stream );
DMA_DeInit( peripheral->tx_dma.stream );
if ( peripheral->tx_dma.controller == DMA1 )
{
RCC->AHB1ENR |= RCC_AHB1Periph_DMA1;
}
else
{
RCC->AHB1ENR |= RCC_AHB1Periph_DMA2;
}
if ( peripheral->rx_dma.controller == DMA1 )
{
RCC->AHB1ENR |= RCC_AHB1Periph_DMA1;
}
else
{
RCC->AHB1ENR |= RCC_AHB1Periph_DMA2;
}
SPI_I2S_DMACmd( peripheral->port, SPI_I2S_DMAReq_Rx, ENABLE );
SPI_I2S_DMACmd( peripheral->port, SPI_I2S_DMAReq_Tx, ENABLE );
}
exit:
platform_mcu_powersave_enable();
return err;
}
void overo_link_arch_init(void) {
/* Enable SPI_1 DMA clock ---------------------------------------------------*/
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
/* Enable SPI1 Periph clock -------------------------------------------------*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);
/* Configure GPIOs: NSS, SCK, MISO and MOSI --------------------------------*/
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* SPI_SLAVE configuration --------------------------------------------------*/
SPI_InitTypeDef SPI_InitStructure;
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Hard;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 0x31;
SPI_Init(SPI1, &SPI_InitStructure);
SPI_CalculateCRC(SPI1, ENABLE);
/* Enable SPI_SLAVE */
// SPI_Cmd(SPI1, DISABLE); why that ?
SPI_Cmd(SPI1, ENABLE);
/* Configure DMA1 channel2 IRQ Channel */
NVIC_InitTypeDef NVIC_init_struct = {
.NVIC_IRQChannel = DMA1_Channel2_IRQn,
.NVIC_IRQChannelPreemptionPriority = 0,
.NVIC_IRQChannelSubPriority = 0,
.NVIC_IRQChannelCmd = ENABLE
};
NVIC_Init(&NVIC_init_struct);
/* setup DMA for first transfert */
overo_link_arch_prepare_next_transfert();
}
void overo_link_arch_prepare_next_transfert(void) {
/* Disable SPI module */
SPI_Cmd(SPI1, DISABLE);
/* Make sure RX register is empty */
uint8_t foo __attribute__ ((unused)) = SPI1->DR;
/* Read status register to clear OVR, UDR, MODF flags */
foo = SPI1->SR;
/* clear possible CRC_ERR flag */
SPI1->SR = (uint16_t)~SPI_FLAG_CRCERR;
/* SPI_SLAVE_Rx_DMA_Channel configuration ------------------------------------*/
DMA_DeInit(DMA1_Channel2);
const DMA_InitTypeDef DMA_InitStructure_rx = {
.DMA_PeripheralBaseAddr = (uint32_t)(SPI1_BASE+0x0C),
.DMA_MemoryBaseAddr = (uint32_t)overo_link.down.array,
.DMA_DIR = DMA_DIR_PeripheralSRC,
.DMA_BufferSize = sizeof(union AutopilotMessage),
.DMA_PeripheralInc = DMA_PeripheralInc_Disable,
.DMA_MemoryInc = DMA_MemoryInc_Enable,
.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte,
.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte,
.DMA_Mode = DMA_Mode_Normal,
.DMA_Priority = DMA_Priority_VeryHigh,
.DMA_M2M = DMA_M2M_Disable
};
DMA_Init(DMA1_Channel2, (DMA_InitTypeDef*)&DMA_InitStructure_rx);
/* SPI_SLAVE_Tx_DMA_Channel configuration ------------------------------------*/
DMA_DeInit(DMA1_Channel3);
const DMA_InitTypeDef DMA_InitStructure_tx = {
.DMA_PeripheralBaseAddr = (uint32_t)(SPI1_BASE+0x0C),
.DMA_MemoryBaseAddr = (uint32_t)overo_link.up.array,
.DMA_DIR = DMA_DIR_PeripheralDST,
.DMA_BufferSize = sizeof(union AutopilotMessage),
.DMA_PeripheralInc = DMA_PeripheralInc_Disable,
.DMA_MemoryInc = DMA_MemoryInc_Enable,
.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte,
.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte,
.DMA_Mode = DMA_Mode_Normal,
.DMA_Priority = DMA_Priority_Medium,
.DMA_M2M = DMA_M2M_Disable
};
DMA_Init(DMA1_Channel3, (DMA_InitTypeDef*)&DMA_InitStructure_tx);
/* Enable SPI_1 Rx request */
SPI_I2S_DMACmd(SPI1, SPI_I2S_DMAReq_Rx, ENABLE);
/* Enable DMA1 Channel2 */
DMA_Cmd(DMA1_Channel2, ENABLE);
/* Enable SPI_1 Tx request */
SPI_I2S_DMACmd(SPI1, SPI_I2S_DMAReq_Tx, ENABLE);
/* Enable DMA1 Channel3 */
DMA_Cmd(DMA1_Channel3, ENABLE);
/* Enable DMA1 Channel2 Transfer Complete interrupt */
DMA_ITConfig(DMA1_Channel2, DMA_IT_TC, ENABLE);
/* resets CRC module */
SPI_CalculateCRC(SPI1, DISABLE);
SPI_CalculateCRC(SPI1, ENABLE);
/* enable SPI */
SPI_Cmd(SPI1, ENABLE);
}
void dma1_c2_irq_handler(void) {
DMA_ITConfig(DMA1_Channel2, DMA_IT_TC, DISABLE);
overo_link.status = DATA_AVAILABLE;
}
void USB_cable(void)
{
rt_device_t dev = RT_NULL;
SD_CardInfo * sdio_info = RT_NULL;
dev = rt_device_find("sd0");
{
SPI_InitTypeDef SPI_InitStructure;
/*------------------------ SPI1 configuration ------------------------*/
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;//SPI_Direction_1Line_Tx;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_16;/* 72M/64=1.125M */
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_I2S_DeInit(SPI1);
SPI_Init(SPI1, &SPI_InitStructure);
/* Enable SPI_MASTER */
SPI_Cmd(SPI1, ENABLE);
SPI_CalculateCRC(SPI1, DISABLE);
}
{
/* SPI_FLASH */
struct rt_device_blk_geometry geometry;
dev_spi_flash = rt_device_find("flash0");
if(dev_spi_flash != RT_NULL)
{
rt_memset(&geometry, 0, sizeof(geometry));
rt_device_control(dev_spi_flash, RT_DEVICE_CTRL_BLK_GETGEOME, &geometry);
Mass_Block_Size[1] = geometry.bytes_per_sector;
Mass_Block_Count[1] = geometry.sector_count;
Mass_Memory_Size[1] = geometry.bytes_per_sector * geometry.sector_count;
}
else
{
rt_kprintf("\r\nNo find the device flash0 !!!!");
}
}
if(dev != RT_NULL)
{
dev_sdio = dev;
sdio_info = (SD_CardInfo *)dev->user_data;
Mass_Memory_Size[0] = sdio_info->CardCapacity;
Mass_Block_Size[0] = sdio_info->CardBlockSize;
Mass_Block_Count[0] = Mass_Memory_Size[0] / Mass_Block_Size[0];
}
else
{
rt_kprintf("\r\nNo find the device sd0 !!!!");
}
/* 3:NAND */
/* usb msc up*/
Set_System();
Set_USBClock();
USB_Interrupts_Config();
USB_Init();
#if (USB_USE_AUTO_REMOVE == 1)
/* delete the other thread */
/* create msc_thread */
{
rt_thread_t msc_thread;
msc_thread = rt_thread_create("msc_thread",
msc_thread_entry, RT_NULL,
1024, RT_THREAD_PRIORITY_MAX-1,1);
if (msc_thread != RT_NULL) rt_thread_startup(msc_thread);
}
#endif
}
DRV_Spi_Error DRV_Spi_Open( const char *pcName , DRV_Spi_Handle *pHandle)
{
DRV_Spi_Error eError = Spi_Device_Not_Found;
int iSpiIndex;
Spi_Device_Data *pSpiData;
SPI_InitTypeDef SPI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
volatile unsigned char ucDummyread;
for ( iSpiIndex = 0 ; iSpiIndex < SPI_DEVICE_COUNT ; iSpiIndex++ )
{
if( !strcmp( pcName , SPI_DeviceDataList[iSpiIndex].pCfg->pcName) )
{
pSpiData = &SPI_DeviceDataList[iSpiIndex];
eError=Spi_No_Error;
break;
}
}
if( eError==Spi_Device_Not_Found )
return eError;
if( pSpiData->eState == Spi_Device_Open)
return Spi_AlreadyOpened;
*pHandle =(DRV_Spi_Handle) pSpiData;
/* Enable SPI clock */
pSpiData->pCfg->PeriphClock.Cmd(pSpiData->pCfg->PeriphClock.Clock,ENABLE);
/* Enable SPI_SLAVE DMA clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1 , ENABLE);
/* Configure SPI pins: SCK and MOSI with default alternate function (not remapped) push-pull */
GPIO_InitStructure.GPIO_Pin = pSpiData->pCfg->PIO.SCK_Pin | pSpiData->pCfg->PIO.MOSI_Pin;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(pSpiData->pCfg->PIO.PORT, &GPIO_InitStructure);
/* Configure MISO as Input with internal pull-up */
GPIO_InitStructure.GPIO_Pin = pSpiData->pCfg->PIO.MISO_Pin;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
//GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(pSpiData->pCfg->PIO.PORT, &GPIO_InitStructure);
/* SPI configuration */
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = pSpiData->pCfg->speed[DRV_SPI_SLOW];
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(pSpiData->pCfg->pDevice, &SPI_InitStructure);
SPI_CalculateCRC(pSpiData->pCfg->pDevice, DISABLE);
SPI_Cmd(pSpiData->pCfg->pDevice, ENABLE);
/* drain SPI */
while (SPI_I2S_GetFlagStatus(pSpiData->pCfg->pDevice, SPI_I2S_FLAG_TXE) == RESET)
;
ucDummyread = SPI_I2S_ReceiveData(pSpiData->pCfg->pDevice);
/* Set device unlock */
pSpiData->ucLock=0;
return eError;
}
static rt_err_t configure(struct rt_spi_device* device,
struct rt_spi_configuration* configuration)
{
struct stm32_spi_bus * stm32_spi_bus = (struct stm32_spi_bus *)device->bus;
SPI_InitTypeDef SPI_InitStructure;
SPI_StructInit(&SPI_InitStructure);
/* data_width */
if(configuration->data_width <= 8)
{
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
}
else if(configuration->data_width <= 16)
{
SPI_InitStructure.SPI_DataSize = SPI_DataSize_16b;
}
else
{
return RT_EIO;
}
/* baudrate */
{
uint32_t SPI_APB_CLOCK;
uint32_t stm32_spi_max_clock;
uint32_t max_hz;
stm32_spi_max_clock = 42000000;
max_hz = configuration->max_hz;
#ifdef STM32F4XX
stm32_spi_max_clock = 37500000;
#elif STM32F2XX
stm32_spi_max_clock = 30000000;
#endif
if(max_hz > stm32_spi_max_clock)
{
max_hz = stm32_spi_max_clock;
}
SPI_APB_CLOCK = SystemCoreClock / 4;
/* STM32F2xx SPI MAX 30Mhz */
/* STM32F4xx SPI MAX 37.5Mhz */
if(max_hz >= SPI_APB_CLOCK/2 && SPI_APB_CLOCK/2 <= 42000000)
{
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;
}
else if(max_hz >= SPI_APB_CLOCK/4)
{
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
}
else if(max_hz >= SPI_APB_CLOCK/8)
{
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8;
}
else if(max_hz >= SPI_APB_CLOCK/16)
{
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_16;
}
else if(max_hz >= SPI_APB_CLOCK/32)
{
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_32;
}
else if(max_hz >= SPI_APB_CLOCK/64)
{
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_64;
}
else if(max_hz >= SPI_APB_CLOCK/128)
{
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_128;
}
else
{
/* min prescaler 256 */
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256;
}
} /* baudrate */
/* CPOL */
if(configuration->mode & RT_SPI_CPOL)
{
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
}
else
{
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
}
/* CPHA */
if(configuration->mode & RT_SPI_CPHA)
{
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
}
else
{
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
}
/* MSB or LSB */
if(configuration->mode & RT_SPI_MSB)
{
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
}
else
{
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_LSB;
}
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
/* init SPI */
SPI_I2S_DeInit(stm32_spi_bus->SPI);
SPI_Init(stm32_spi_bus->SPI, &SPI_InitStructure);
/* Enable SPI_MASTER */
SPI_Cmd(stm32_spi_bus->SPI, ENABLE);
SPI_CalculateCRC(stm32_spi_bus->SPI, DISABLE);
return RT_EOK;
};
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* System Clocks Configuration */
RCC_Configuration();
/* Configure the GPIO ports */
GPIO_Configuration();
/* SPI_MASTER configuration ------------------------------------------------*/
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = CRCPolynomial;
SPI_Init(SPI_MASTER, &SPI_InitStructure);
/* SPI_SLAVE configuration ------------------------------------------------------*/
SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;
SPI_Init(SPI_SLAVE, &SPI_InitStructure);
/* SPI_MASTER_Rx_DMA_Channel configuration ---------------------------------*/
DMA_DeInit(SPI_MASTER_Rx_DMA_Channel);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SPI_MASTER_DR_Base;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)SPI_MASTER_Buffer_Rx;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = BufferSize;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(SPI_MASTER_Rx_DMA_Channel, &DMA_InitStructure);
/* SPI_MASTER_Tx_DMA_Channel configuration ---------------------------------*/
DMA_DeInit(SPI_MASTER_Tx_DMA_Channel);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SPI_MASTER_DR_Base;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)SPI_MASTER_Buffer_Tx;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
DMA_InitStructure.DMA_Priority = DMA_Priority_Low;
DMA_Init(SPI_MASTER_Tx_DMA_Channel, &DMA_InitStructure);
/* SPI_SLAVE_Rx_DMA_Channel configuration ----------------------------------*/
DMA_DeInit(SPI_SLAVE_Rx_DMA_Channel);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SPI_SLAVE_DR_Base;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)SPI_SLAVE_Buffer_Rx;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
DMA_Init(SPI_SLAVE_Rx_DMA_Channel, &DMA_InitStructure);
/* SPI_SLAVE_Tx_DMA_Channel configuration ----------------------------------*/
DMA_DeInit(SPI_SLAVE_Tx_DMA_Channel);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SPI_SLAVE_DR_Base;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)SPI_SLAVE_Buffer_Tx;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
DMA_InitStructure.DMA_Priority = DMA_Priority_Medium;
DMA_Init(SPI_SLAVE_Tx_DMA_Channel, &DMA_InitStructure);
/* Enable SPI_MASTER DMA Tx request */
SPI_I2S_DMACmd(SPI_MASTER, SPI_I2S_DMAReq_Tx, ENABLE);
/* Enable SPI_MASTER DMA Rx request */
SPI_I2S_DMACmd(SPI_MASTER, SPI_I2S_DMAReq_Rx, ENABLE);
/* Enable SPI_SLAVE DMA Tx request */
SPI_I2S_DMACmd(SPI_SLAVE, SPI_I2S_DMAReq_Tx, ENABLE);
/* Enable SPI_SLAVE DMA Rx request */
SPI_I2S_DMACmd(SPI_SLAVE, SPI_I2S_DMAReq_Rx, ENABLE);
/* Enable SPI_MASTER CRC calculation */
SPI_CalculateCRC(SPI_MASTER, ENABLE);
/* Enable SPI_SLAVE CRC calculation */
SPI_CalculateCRC(SPI_SLAVE, ENABLE);
/* Enable SPI_SLAVE */
SPI_Cmd(SPI_SLAVE, ENABLE);
/* Enable SPI_MASTER */
SPI_Cmd(SPI_MASTER, ENABLE);
/* Enable DMA channels */
DMA_Cmd(SPI_MASTER_Rx_DMA_Channel, ENABLE);
DMA_Cmd(SPI_SLAVE_Rx_DMA_Channel, ENABLE);
DMA_Cmd(SPI_SLAVE_Tx_DMA_Channel, ENABLE);
DMA_Cmd(SPI_MASTER_Tx_DMA_Channel, ENABLE);
/* Transfer complete */
while(!DMA_GetFlagStatus(SPI_MASTER_Rx_DMA_FLAG));
while(!DMA_GetFlagStatus(SPI_SLAVE_Rx_DMA_FLAG));
while(!DMA_GetFlagStatus(SPI_SLAVE_Tx_DMA_FLAG));
while(!DMA_GetFlagStatus(SPI_MASTER_Tx_DMA_FLAG));
/* Wait for SPI_MASTER data reception: CRC transmitted by SPI_SLAVE */
while(SPI_I2S_GetFlagStatus(SPI_MASTER, SPI_I2S_FLAG_RXNE)==RESET);
/* Wait for SPI_SLAVE data reception: CRC transmitted by SPI_MASTER */
while(SPI_I2S_GetFlagStatus(SPI_SLAVE, SPI_I2S_FLAG_RXNE)==RESET);
/* Check the corectness of written dada */
TransferStatus1 = Buffercmp(SPI_SLAVE_Buffer_Rx, SPI_MASTER_Buffer_Tx, BufferSize);
TransferStatus2 = Buffercmp(SPI_MASTER_Buffer_Rx, SPI_SLAVE_Buffer_Tx, BufferSize);
/* TransferStatus1, TransferStatus2 = PASSED, if the data transmitted and received
are correct */
/* TransferStatus1, TransferStatus2 = FAILED, if the data transmitted and received
are different */
/* Test on the SPI_MASTER CRCR ERROR flag */
if ((SPI_I2S_GetFlagStatus(SPI_MASTER, SPI_FLAG_CRCERR)) != RESET)
{
TransferStatus1 = FAILED;
}
/* Test on the SPI_SLAVE CRCR ERROR flag */
if ((SPI_I2S_GetFlagStatus(SPI_SLAVE, SPI_FLAG_CRCERR)) != RESET)
{
TransferStatus2 = FAILED;
}
/* Read SPI_MASTER received CRC value */
SPI_MASTERCRCValue = SPI_I2S_ReceiveData(SPI_MASTER);
/* Read SPI_SLAVE received CRC value */
SPI_SLAVECRCValue = SPI_I2S_ReceiveData(SPI_SLAVE);
while (1)
{
}
}
void SPIx_Init(SPI_Driver* SPIx)
{
SPI_InitTypeDef SPI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
#ifdef SPIx_USE_DMA
DMA_InitTypeDef DMA_InitStructure;
#endif
// Enable SPI and GPIO clocks
SPIx->SPI_CLK(SPIx->SPI_Func, ENABLE);
SPIx->GPIO_CLK(SPIx->GPIO_Func, ENABLE);
// Connect SPI pins to AF
GPIO_PinAFConfig(SPIx->Gpio, SPIx->SCK_Src, SPIx->GPIO_AF_SPI);
GPIO_PinAFConfig(SPIx->Gpio, SPIx->MISO_Src, SPIx->GPIO_AF_SPI);
GPIO_PinAFConfig(SPIx->Gpio, SPIx->MOSI_Src, SPIx->GPIO_AF_SPI);
// SPI SCK/MISO/MOSI pin configuration
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Pin = SPIx->SCK_Pin | SPIx->MISO_Pin | SPIx->MOSI_Pin;
GPIO_Init(SPIx->Gpio, &GPIO_InitStructure);
SPIx->GPIO_CS_CLK(SPIx->CS_Func, ENABLE);
// Configure GPIO PIN for Chip select
GPIO_InitStructure.GPIO_Pin = SPIx->CS_Pin;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(SPIx->Gpio_CS, &GPIO_InitStructure);
// Chip DeSelect high
CHIP_DESELECT(SPIx);
//SPI configuration -------------------------------------------------------*/
SPI_I2S_DeInit(SPIx->SPI);
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPIx->SPI_DataSize;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPIx->SPI_Prescaler;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPIx->SPI, &SPI_InitStructure);
SPI_CalculateCRC(SPIx->SPI, DISABLE);
//Enable SPI
SPI_Cmd(SPIx->SPI, ENABLE);
while (SPI_I2S_GetFlagStatus(SPIx->SPI, SPI_I2S_FLAG_TXE) == RESET);
SPI_I2S_ReceiveData(SPIx->SPI);
#ifdef SPIx_USE_DMA
// Enable DMA clock
SPIx->DMA_CLK(SPIx->DMA_Func, ENABLE);
//Enable the SPIx_RX_DMA_CHANNEL (SPIx_RX) Interrupt
NVIC_Init(&SPIx->NVIC_DMA_TX);
//Enable the SPIx_TX_DMA_CHANNEL (SPIx_TX) Interrupt
NVIC_Init(&SPIx->NVIC_DMA_RX);
// Deinitialize DMA Streams
DMA_DeInit(SPIx->DMA_TX_Stream);
while (DMA_GetCmdStatus(SPIx->DMA_TX_Stream) != DISABLE);
DMA_Cmd(SPIx->DMA_TX_Stream, DISABLE);
DMA_DeInit(SPIx->DMA_RX_Stream);
while (DMA_GetCmdStatus(SPIx->DMA_RX_Stream) != DISABLE);
DMA_Cmd(SPIx->DMA_RX_Stream, DISABLE);
// Configure DMA Initialization Structure
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)(&(SPIx->SPI->DR));
DMA_InitStructure.DMA_BufferSize = 0;
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_1QuarterFull;
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
// Configure TX DMA
DMA_InitStructure.DMA_Channel = SPIx->DMA_TX_CH;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
DMA_InitStructure.DMA_Memory0BaseAddr =(uint32_t)0;
DMA_Init(SPIx->DMA_TX_Stream, &DMA_InitStructure);
// Configure RX DMA
DMA_InitStructure.DMA_Channel = SPIx->DMA_RX_CH;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)0;
DMA_Init(SPIx->DMA_RX_Stream, &DMA_InitStructure);
SPI_DMACmd(SPIx->SPI, SPI_DMAReq_Rx, ENABLE);
SPI_DMACmd(SPIx->SPI, SPI_DMAReq_Tx, ENABLE);
DMA_ClearFlag(SPIx->DMA_TX_Stream, SPIx->DMA_TX_Flag);
DMA_ClearFlag(SPIx->DMA_RX_Stream, SPIx->DMA_RX_Flag);
DMA_ITConfig(SPIx->DMA_TX_Stream, DMA_IT_TC | DMA_IT_TE, ENABLE);
DMA_ITConfig(SPIx->DMA_RX_Stream, DMA_IT_TC | DMA_IT_TE, ENABLE);
DMA_Cmd(SPIx->DMA_TX_Stream, DISABLE);
DMA_Cmd(SPIx->DMA_RX_Stream, DISABLE);
#endif
}
void spiInit(SPI_TypeDef *SPI)
{
volatile uint8_t dummyread __attribute__((unused));
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
///////////////////////////////////
if (SPI == SPI1)
{
RCC_AHB1PeriphClockCmd(SPI1_GPIO_CLOCK, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);
GPIO_PinAFConfig(SPI1_GPIO, SPI1_SCK_PIN_SOURCE, GPIO_AF_SPI1);
GPIO_PinAFConfig(SPI1_GPIO, SPI1_MISO_PIN_SOURCE, GPIO_AF_SPI1);
GPIO_PinAFConfig(SPI1_GPIO, SPI1_MOSI_PIN_SOURCE, GPIO_AF_SPI1);
GPIO_StructInit(&GPIO_InitStructure);
// Init pins
GPIO_InitStructure.GPIO_Pin = SPI1_SCK_PIN | SPI1_MISO_PIN | SPI1_MOSI_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(SPI1_GPIO, &GPIO_InitStructure);
///////////////////////////////
SPI_StructInit(&SPI_InitStructure);
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_128; // 42/128 = 328.125 kHz SPI Clock
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI1, &SPI_InitStructure);
SPI_CalculateCRC(SPI1, DISABLE);
SPI_Cmd(SPI1, ENABLE);
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
dummyread = SPI_I2S_ReceiveData(SPI1);
}
///////////////////////////////////
if (SPI == SPI2)
{
RCC_AHB1PeriphClockCmd(SPI2_GPIO_CLOCK, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
GPIO_StructInit(&GPIO_InitStructure);
// Init pins
GPIO_InitStructure.GPIO_Pin = SPI2_SCK_PIN | SPI2_MISO_PIN | SPI2_MOSI_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
//GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
//GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(SPI2_GPIO, &GPIO_InitStructure);
GPIO_PinAFConfig(SPI2_GPIO, SPI2_SCK_PIN_SOURCE, GPIO_AF_SPI2);
GPIO_PinAFConfig(SPI2_GPIO, SPI2_MISO_PIN_SOURCE, GPIO_AF_SPI2);
GPIO_PinAFConfig(SPI2_GPIO, SPI2_MOSI_PIN_SOURCE, GPIO_AF_SPI2);
///////////////////////////////
RCC_AHB1PeriphClockCmd(MAX7456_CS_GPIO_CLOCK, ENABLE);
GPIO_InitStructure.GPIO_Pin = MAX7456_CS_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
//GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
//GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
//GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(MAX7456_CS_GPIO, &GPIO_InitStructure);
///////////////////////////////
SPI_StructInit(&SPI_InitStructure);
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4; // 42/4 = 10.5 MHz SPI Clock
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI2, &SPI_InitStructure);
SPI_Cmd(SPI2, ENABLE);
SPI_CalculateCRC(SPI2, DISABLE);
SPI_Cmd(SPI2, ENABLE);
DISABLE_MAX7456;
while (SPI_I2S_GetFlagStatus(MAX7456_SPI, SPI_I2S_FLAG_TXE) == RESET);
dummyread = SPI_I2S_ReceiveData(MAX7456_SPI);
}
///////////////////////////////////
if (SPI == SPI3)
{
RCC_AHB1PeriphClockCmd(SPI3_GPIO_CLOCK, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI3, ENABLE);
GPIO_StructInit(&GPIO_InitStructure);
// Init pins
GPIO_InitStructure.GPIO_Pin = SPI3_SCK_PIN | SPI3_MISO_PIN | SPI3_MOSI_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
//GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
//GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(SPI3_GPIO, &GPIO_InitStructure);
GPIO_PinAFConfig(SPI3_GPIO, SPI3_SCK_PIN_SOURCE, GPIO_AF_SPI3);
GPIO_PinAFConfig(SPI3_GPIO, SPI3_MISO_PIN_SOURCE, GPIO_AF_SPI3);
GPIO_PinAFConfig(SPI3_GPIO, SPI3_MOSI_PIN_SOURCE, GPIO_AF_SPI3);
GPIO_StructInit(&GPIO_InitStructure);
///////////////////////////////
RCC_AHB1PeriphClockCmd(MPU6000_CS_GPIO_CLOCK, ENABLE);
GPIO_InitStructure.GPIO_Pin = MPU6000_CS_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
//GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
//GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
//GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(MPU6000_CS_GPIO, &GPIO_InitStructure);
///////////////////////////////
SPI_StructInit(&SPI_InitStructure);
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_64; // 42/64 = 0.65625 MHz SPI Clock
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI3, &SPI_InitStructure);
SPI_Cmd(SPI3, ENABLE);
SPI_CalculateCRC(SPI3, DISABLE);
SPI_Cmd(SPI3, ENABLE);
DISABLE_MPU6000;
while (SPI_I2S_GetFlagStatus(MPU6000_SPI, SPI_I2S_FLAG_TXE) == RESET);
dummyread = SPI_I2S_ReceiveData(MPU6000_SPI);
}
///////////////////////////////////
}
static void spi_config(void)
{
SPI_InitTypeDef SPI_InitStructure;
#if 1
/*
* SPI1 -- sst25vf016b
*
* SPI1 clk -- APB2, fCLK2(max = 72MHz)
*/
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2; /* mark by David */
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI1, &SPI_InitStructure);
SPI_Cmd(SPI1, ENABLE);
#endif
#if 1
/* touch chip SPI configuration
* tsc2046 fclk(max) = 2.5MHz
*/
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_32; /* 36M/32=1.125M */
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_I2S_DeInit(TOUCH_USE_SPIX);
SPI_Init(TOUCH_USE_SPIX, &SPI_InitStructure);
SPI_Cmd(TOUCH_USE_SPIX, ENABLE);
SPI_CalculateCRC(TOUCH_USE_SPIX, DISABLE);
#endif
#if 0
/* SPI2 configuration */
/*
* SPI2 clk -- APB1, fCLK1(max = 36MHz)
* enc28j60's clk(max) = 10MHz
* DS80349C.errata #1:When the SPI clock from the host microcontroller is run at frequencies of less than 8 MHz,
* reading or writing to the MAC registers may be unreliable.
*/
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI2, &SPI_InitStructure);
SPI_Cmd(SPI2, ENABLE);
#endif
return;
}
