/**
* @brief Configures the SPI Peripheral.
*/
void spi_config(void)
{
SPI_InitTypeDef SPI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable the SPI clock */
SPIx_CLK_INIT(SPIx_CLK, ENABLE);
/* Enable GPIO clocks */
RCC_AHB1PeriphClockCmd(SPIx_SCK_GPIO_CLK | SPIx_MISO_GPIO_CLK | SPIx_MOSI_GPIO_CLK | l3gd20_CS_GPIO_CLK, ENABLE);
/* Connect SPI pins to AF5 */
GPIO_PinAFConfig(SPIx_SCK_GPIO_PORT, SPIx_SCK_SOURCE, SPIx_SCK_AF);
GPIO_PinAFConfig(SPIx_MISO_GPIO_PORT, SPIx_MISO_SOURCE, SPIx_MISO_AF);
GPIO_PinAFConfig(SPIx_MOSI_GPIO_PORT, SPIx_MOSI_SOURCE, SPIx_MOSI_AF);
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_DOWN;
/* SPI SCK pin configuration */
GPIO_InitStructure.GPIO_Pin = SPIx_SCK_PIN;
GPIO_Init(SPIx_SCK_GPIO_PORT, &GPIO_InitStructure);
/* SPI MOSI pin configuration */
GPIO_InitStructure.GPIO_Pin = SPIx_MOSI_PIN;
GPIO_Init(SPIx_MOSI_GPIO_PORT, &GPIO_InitStructure);
/* SPI MISO pin configuration */
GPIO_InitStructure.GPIO_Pin = SPIx_MISO_PIN;
GPIO_Init(SPIx_MISO_GPIO_PORT, &GPIO_InitStructure);
/* Configure l3gd20 CS pin in output pushpull mode */
GPIO_InitStructure.GPIO_Pin = l3gd20_CS_PIN;
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(l3gd20_CS_GPIO_PORT, &GPIO_InitStructure);
/* Deselect the l3gd20: Chip Select high */
l3gd20_CS_HIGH();
/* SPI 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 = DISABLE;
SPI_Init(SPIx, &SPI_InitStructure);
SPI_Cmd(SPIx, ENABLE);
}
//Draws a single pixel
void ssd1306_SPI_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
/* Peripheral Clock Enable -------------------------------------------------*/
/* Enable the SPI clock */
SPIx_CLK_INIT(SPIx_CLK, ENABLE);
/* Enable GPIO clocks */
RCC_AHB1PeriphClockCmd(SPIx_SCK_GPIO_CLK | SPIx_MOSI_GPIO_CLK, ENABLE);
/* SPI GPIO Configuration --------------------------------------------------*/
/* Connect SPI pins to AF5 */
GPIO_PinAFConfig(SPIx_SCK_GPIO_PORT, SPIx_SCK_SOURCE, SPIx_SCK_AF);
GPIO_PinAFConfig(SPIx_MOSI_GPIO_PORT, SPIx_MOSI_SOURCE, SPIx_MOSI_AF);
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_DOWN;
/* SPI SCK pin configuration */
GPIO_InitStructure.GPIO_Pin = SPIx_SCK_PIN;
GPIO_Init(SPIx_SCK_GPIO_PORT, &GPIO_InitStructure);
/* SPI MOSI pin configuration */
GPIO_InitStructure.GPIO_Pin = SPIx_MOSI_PIN;
GPIO_Init(SPIx_MOSI_GPIO_PORT, &GPIO_InitStructure);
/* SPI configuration -------------------------------------------------------*/
SPI_I2S_DeInit(SPIx);
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High; // Clock Polarity ACTIVE state is High or Low
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge; // Clock Phase Data is sampled on the first or second clock edge transition
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
/* Configure the Priority Group to 1 bit
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
Configure the SPI interrupt priority
NVIC_InitStructure.NVIC_IRQChannel = SPIx_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
*/
/* Initializes the SPI communication -----------------------------------------*/
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_Init(SPIx, &SPI_InitStructure);
/* The Data transfer is performed in the SPI interrupt routine----------------*/
/* Enable the SPI peripheral */
SPI_Cmd(SPIx, ENABLE);
}
void SPI1_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
/* Enable the SPI clock */
SPIx_CLK_INIT(SPIx_CLK, ENABLE);
/* Enable GPIO clocks */
RCC_AHB1PeriphClockCmd(SPIx_SCK_GPIO_CLK | SPIx_MISO_GPIO_CLK | SPIx_MOSI_GPIO_CLK, ENABLE);
/* Connect SPI pins to AF5 */
GPIO_PinAFConfig(SPIx_SCK_GPIO_PORT, SPIx_SCK_SOURCE, SPIx_SCK_AF);
GPIO_PinAFConfig(SPIx_MOSI_GPIO_PORT, SPIx_MOSI_SOURCE, SPIx_MOSI_AF);
GPIO_PinAFConfig(SPIx_MISO_GPIO_PORT, SPIx_MISO_SOURCE, SPIx_MOSI_AF);
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_DOWN;
/* SPI SCK pin configuration */
GPIO_InitStructure.GPIO_Pin = SPIx_SCK_PIN;
GPIO_Init(SPIx_SCK_GPIO_PORT, &GPIO_InitStructure);
/* SPI MOSI pin configuration */
GPIO_InitStructure.GPIO_Pin = SPIx_MOSI_PIN;
GPIO_Init(SPIx_MOSI_GPIO_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = SPIx_MISO_PIN;
GPIO_Init(SPIx_MISO_GPIO_PORT, &GPIO_InitStructure);
/* SPI configuration -------------------------------------------------------*/
SPI_I2S_DeInit(SPIx);
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;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 0;
SPI_Init(SPIx, &SPI_InitStructure);
/* Configure the Priority Group to 1 bit */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
/* Configure the SPI interrupt priority */
NVIC_InitStructure.NVIC_IRQChannel = SPI1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
// copy-paste from ST.com examples with DMA
void nrf24init_dma(void){
GPIO_InitTypeDef GPIO_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
/* Peripheral Clock Enable -------------------------------------------------*/
/* Enable the SPI clock */
SPIx_CLK_INIT(NRF24_SPIx_CLK, ENABLE);
/* Enable GPIO clocks */
RCC_AHB1PeriphClockCmd(NRF24_SPIx_SCK_GPIO_CLK | NRF24_SPIx_MISO_GPIO_CLK | NRF24_SPIx_MOSI_GPIO_CLK, ENABLE);
/* Enable DMA clock */
RCC_AHB1PeriphClockCmd(NRF24_SPIx_DMA_CLK, ENABLE);
/* SPI GPIO Configuration --------------------------------------------------*/
/* GPIO Deinitialisation */
GPIO_DeInit(NRF24_SPIx_SCK_GPIO_PORT);
GPIO_DeInit(NRF24_SPIx_MISO_GPIO_PORT);
GPIO_DeInit(NRF24_SPIx_MOSI_GPIO_PORT);
/* Connect SPI pins to AF5 */
GPIO_PinAFConfig(NRF24_SPIx_SCK_GPIO_PORT, NRF24_SPIx_SCK_SOURCE, NRF24_SPIx_SCK_AF);
GPIO_PinAFConfig(NRF24_SPIx_MISO_GPIO_PORT, NRF24_SPIx_MISO_SOURCE, NRF24_SPIx_MISO_AF);
GPIO_PinAFConfig(NRF24_SPIx_MOSI_GPIO_PORT, NRF24_SPIx_MOSI_SOURCE, NRF24_SPIx_MOSI_AF);
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_DOWN;
/* SPI SCK pin configuration */
GPIO_InitStructure.GPIO_Pin = NRF24_SPIx_SCK_PIN;
GPIO_Init(NRF24_SPIx_SCK_GPIO_PORT, &GPIO_InitStructure);
/* SPI MISO pin configuration */
GPIO_InitStructure.GPIO_Pin = NRF24_SPIx_MISO_PIN;
GPIO_Init(NRF24_SPIx_MISO_GPIO_PORT, &GPIO_InitStructure);
/* SPI MOSI pin configuration */
GPIO_InitStructure.GPIO_Pin = NRF24_SPIx_MOSI_PIN;
GPIO_Init(NRF24_SPIx_MOSI_GPIO_PORT, &GPIO_InitStructure);
/* SPI configuration -------------------------------------------------------*/
SPI_I2S_DeInit(NRF24_SPIx);
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;
// master setting?
NRF24_SPIx->CR2 |= (uint16_t)SPI_CR2_SSOE; // set nss pin as output
SPI1->CR2 |= SPI_CR2_SSOE;
NRF24_SPIx->CR1 |= SPI_NSSInternalSoft_Set;
/* DMA configuration -------------------------------------------------------*/
/* Deinitialize DMA Streams */
DMA_DeInit(NRF24_SPIx_TX_DMA_STREAM);
DMA_DeInit(NRF24_SPIx_RX_DMA_STREAM);
/* Configure DMA Initialization Structure */
DMA_InitStructure.DMA_BufferSize = NRF24_DMA_BUFFERSIZE;
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_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_PeripheralBaseAddr =(uint32_t) (&(NRF24_SPIx->DR));
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 = NRF24_SPIx_TX_DMA_CHANNEL;
DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
DMA_InitStructure.DMA_Memory0BaseAddr =(uint32_t)aTxBuffer;
DMA_Init(NRF24_SPIx_TX_DMA_STREAM, &DMA_InitStructure);
/* Configure RX DMA */
DMA_InitStructure.DMA_Channel = NRF24_SPIx_RX_DMA_CHANNEL;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_Memory0BaseAddr =(uint32_t)aRxBuffer;
DMA_Init(NRF24_SPIx_RX_DMA_STREAM, &DMA_InitStructure);
}
void glcd_init(void)
{
/* Initialization of device */
/* Declare GPIO and SPI init structures */
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
/* Configuring CS, DC (A0) and RST pin */
/* Peripheral clock init. */
RCC_AHB1PeriphClockCmd(CONTROLLER_SPI_DC_RCC | CONTROLLER_SPI_SS_RCC | \
CONTROLLER_SPI_RST_RCC, ENABLE);
/* CS pin */
GPIO_InitStructure.GPIO_Pin = CONTROLLER_SPI_SS_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_Init(CONTROLLER_SPI_SS_PORT, &GPIO_InitStructure);
/* DC (A0) pin */
GPIO_InitStructure.GPIO_Pin = CONTROLLER_SPI_DC_PIN;
GPIO_Init(CONTROLLER_SPI_DC_PORT, &GPIO_InitStructure);
/* RST pin */
GPIO_InitStructure.GPIO_Pin = CONTROLLER_SPI_RST_PIN;
GPIO_Init(CONTROLLER_SPI_RST_PORT, &GPIO_InitStructure);
/* Make sure chip is de-selected by default */
GLCD_DESELECT();
/*
* Configuring SPI:
*/
/* Enable the SPI clock */
SPIx_CLK_INIT(SPIx_CLK, ENABLE);
/* Enable SPI GPIO clocks */
RCC_AHB1PeriphClockCmd(SPIx_SCK_GPIO_CLK | SPIx_MOSI_GPIO_CLK, ENABLE);
/* Connect SPI pins to the corresponding alternate function */
GPIO_PinAFConfig(SPIx_SCK_GPIO_PORT, SPIx_SCK_SOURCE, SPIx_SCK_AF);
GPIO_PinAFConfig(SPIx_MOSI_GPIO_PORT, SPIx_MOSI_SOURCE, SPIx_MOSI_AF);
// GPIO_PinAFConfig(SPIx_MISO_GPIO_PORT, SPIx_MISO_SOURCE, SPIx_MISO_AF);
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_DOWN;
/* SPI SCK pin configuration */
GPIO_InitStructure.GPIO_Pin = SPIx_SCK_PIN;
GPIO_Init(SPIx_SCK_GPIO_PORT, &GPIO_InitStructure);
/* SPI MOSI pin configuration */
GPIO_InitStructure.GPIO_Pin = SPIx_MOSI_PIN;
GPIO_Init(SPIx_MOSI_GPIO_PORT, &GPIO_InitStructure);
#if 0
GPIO_InitStructure.GPIO_Pin = SPIx_MISO_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
GPIO_Init(SPIx_MISO_GPIO_PORT, &GPIO_InitStructure);
#endif
/* SPI configuration */
SPI_I2S_DeInit(SPIx);
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Tx;
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;
/* Clock set to 8MHz */
SPI_InitStructure.SPI_BaudRatePrescaler = SPIx_PRESCALLER;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_Init(SPIx, &SPI_InitStructure);
/* Enable the SPI peripheral */
SPI_Cmd(SPIx, ENABLE);
RCC_AHB1PeriphClockCmd(LCD_LED_GPIO_RCC, ENABLE);
GPIO_InitStructure.GPIO_Pin = LCD_LED_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_Init(LCD_LED_PORT, &GPIO_InitStructure);
#if defined(GLCD_CONTROLLER_PCD8544)
/* Initialisation sequence of controller */
glcd_PCD8544_init();
#elif defined(GLCD_CONTROLLER_ST7565R)
glcd_reset();
glcd_enable_backlight(ENABLE);
glcd_ST7565R_init();
#else
#error "Controller not supported by STM32F0xx"
#endif
}