void FRAM_GPIO_config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(SPI_FLASH_GPIO_CLK | FRAM_CS_GPIO_CLK | FRAM_SPI_SCK_GPIO_CLK | FRAM_SPI_MISO_GPIO_CLK | FRAM_SPI_MOSI_GPIO_CLK , ENABLE);
/*!< Configure sRF_SPI pins: SCK */
GPIO_InitStructure.GPIO_Pin = FRAM_SPI_SCK_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(FRAM_SPI_SCK_GPIO_PORT, &GPIO_InitStructure);
/*!< Configure sRF_SPI pins: MOSI */
GPIO_InitStructure.GPIO_Pin = FRAM_SPI_MOSI_PIN;
GPIO_Init(FRAM_SPI_MOSI_GPIO_PORT, &GPIO_InitStructure);
/*!< Configure sRF_SPI pins: MISO */
GPIO_InitStructure.GPIO_Pin = FRAM_SPI_MISO_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
//GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(FRAM_SPI_MISO_GPIO_PORT, &GPIO_InitStructure);
/*!< Configure sRF_CS_PIN pin: sRF CS pin */
GPIO_InitStructure.GPIO_Pin = FRAM_CS_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(FRAM_CS_GPIO_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = SPI_FLASH_CS_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(SPI_FLASH_GPIO_PORT, &GPIO_InitStructure);
DGFLASH_CS_HIGH();
FRAM_CS_HIGH();
}
/*****************************************************************************
Prototype : spiReadWriteByte
Description : spi basic function
Input : u8 data
Output : None
Return Value :
Date : 2014/3/15
Author : Barry
当写入地址不是每页的开头时，若此页的剩余空间小于要写入的内容大小，那么数据将会重当前
地址开始填充完此页后，从此页的开始处，再继续填充，直到完成
写入内容不能超出每页的大小256字节，超出的部分自能保证最后256字节的内容被写入flash
*****************************************************************************/
void GDflash_page_program(u32 startAddr, u8 *buf, u16 length, bool fastWrite)
{
while ((GDflash_read_status_reg() & 0x01) == 1 );
GDflash_write_enable(true);
DGFLASH_CS_LOW();
if (fastWrite)
{
GDflash_WriteByte(GDFLASH_PAGE_PROGRAM_F2);
}
else
{
GDflash_WriteByte(GDFLASH_PAGE_PROGRAM_02);
}
GDflash_WriteByte( (u8)((startAddr>> 16) &0xFF));
GDflash_WriteByte( (u8)((startAddr>> 8) &0xFF));
GDflash_WriteByte( (u8)(startAddr &0xFF));
for (u16 i = 0; i < length; i++)
{
GDflash_WriteByte( buf[i]);
}
DGFLASH_CS_HIGH();
while ((GDflash_read_status_reg() & 0x01) == 1 );
}
/*****************************************************************************
Prototype : hal_sRF_SPI_Config
Description : none
Input : void
Output : None
Return Value :
Date : 2014/3/15
Author : Barry
*****************************************************************************/
void hal_gdflash_SPI_Config(void)
{
SPI_InitTypeDef SPI_InitStructure;
/*!< Deselect the RF: Chip Select high */
DGFLASH_CS_HIGH();
/* Disable sRF_SPI */
SPI_Cmd(GDFLASH_SPI, DISABLE);
/*!< SPI configuration */
SPI_I2S_DeInit(GDFLASH_SPI);
/*!< sRF_SPI Periph clock enable */
RCC_APB2PeriphClockCmd(DGFLASH_SPI_SCK , ENABLE);
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 = 7;
SPI_Init(GDFLASH_SPI, &SPI_InitStructure);
SPI_RxFIFOThresholdConfig(GDFLASH_SPI, SPI_RxFIFOThreshold_QF);
/*!< Enable the sRF_SPI */
SPI_Cmd(GDFLASH_SPI, ENABLE);
}
void GDflash_read_datas(u32 startAddr, u8 *buf, u32 length, bool fastRead)
{
DGFLASH_CS_LOW();
if (fastRead)
{
GDflash_WriteByte(GDFLASH_FAST_READ);
}
else
{
GDflash_WriteByte(GDFLASH_READ_DATA);
}
GDflash_WriteByte( (u8)((startAddr>> 16) &0xFF));
GDflash_WriteByte( (u8)((startAddr>> 8) &0xFF));
GDflash_WriteByte( (u8)(startAddr &0xFF));
if (fastRead)
{
GDflash_WriteByte(DGFLASH_DUMMY_BYTE);
}
for (u32 i = 0; i < length; i++)
{
buf[i] = GDflash_ReadByte(DGFLASH_DUMMY_BYTE);
}
DGFLASH_CS_HIGH();
}
void GDflash_write_status_reg(u8 value)
{
DGFLASH_CS_LOW();
GDflash_WriteByte(GDFLASH_WRITE_STATUS_REG);
GDflash_WriteByte(value);
DGFLASH_CS_HIGH();
}
u8 GDflash_read_status_reg(void)
{
u8 status_value;
DGFLASH_CS_LOW();
GDflash_WriteByte(GDFLASH_READ_STATUS_REG);
status_value = GDflash_ReadByte(DGFLASH_DUMMY_BYTE);
DGFLASH_CS_HIGH();
return status_value;
}
void GDfalsh_read_identification(u8 *buf)
{
DGFLASH_CS_LOW();
GDflash_WriteByte(0x9F);
buf[0] = GDflash_ReadByte(0xAA);
buf[1] = GDflash_ReadByte(0xAA);
buf[2] = GDflash_ReadByte(0xAA);
DGFLASH_CS_HIGH();
}
void GDflash_write_enable(bool enable)
{
DGFLASH_CS_LOW();
if (enable)
{
GDflash_WriteByte(GDFLASH_WRITE_ENABLE);
}
else
{
GDflash_WriteByte(GDFLASH_WRITE_DISABLE);
}
DGFLASH_CS_HIGH();
}
