Question
porting SPI F1 to F0
Posted on January 18, 2013 at 19:00
Hi, I have this situatiom:
I have the original library of SPI for STM32F1 ''SPIRIT1_Library_Project'' In the file ''SDK_EVAL_Spirit_Spi_Driver.c'' I have a function ''SpiritSpiWriteRegisters(....)'' When porting this function is STM32F0 this function non work! Why , Are there a difference of F1 and F0 for SPI ? I do configure the SPI for STM32F0 in this mode:#define SPIRIT_SPI_PERIPH_NB SPI1
#define SPIRIT_SPI_PERIPH_RCC RCC_APB2Periph_SPI1
/* Defines for MOSI pin*/
#define SPIRIT_SPI_PERIPH_MOSI_PORT GPIOA
#define SPIRIT_SPI_PERIPH_MOSI_PIN GPIO_Pin_7
#define SPIRIT_SPI_PERIPH_MOSI_AF GPIO_AF_0
#define SPIRIT_SPI_PERIPH_MOSI_RCC RCC_AHBPeriph_GPIOA
#define SPIRIT_SPI_PERIPH_MOSI_RCC_SOURCE GPIO_PinSource7
/* Defines for MISO pin */
#define SPIRIT_SPI_PERIPH_MISO_PORT GPIOA
#define SPIRIT_SPI_PERIPH_MISO_PIN GPIO_Pin_6
#define SPIRIT_SPI_PERIPH_MISO_AF GPIO_AF_0
#define SPIRIT_SPI_PERIPH_MISO_RCC RCC_AHBPeriph_GPIOA
#define SPIRIT_SPI_PERIPH_MISO_RCC_SOURCE GPIO_PinSource6
/* Defines for SCLK pin */
#define SPIRIT_SPI_PERIPH_SCLK_PORT GPIOA
#define SPIRIT_SPI_PERIPH_SCLK_PIN GPIO_Pin_5
#define SPIRIT_SPI_PERIPH_SCLK_AF GPIO_AF_0
#define SPIRIT_SPI_PERIPH_SCLK_RCC RCC_AHBPeriph_GPIOA
#define SPIRIT_SPI_PERIPH_SCLK_RCC_SOURCE GPIO_PinSource5
/* Defines for chip select pin */
#define SPIRIT_SPI_PERIPH_CS_PORT GPIOA
#define SPIRIT_SPI_PERIPH_CS_PIN GPIO_Pin_8
#define SPIRIT_SPI_PERIPH_CS_RCC RCC_AHBPeriph_GPIOA
void SpiritSpiInit(void)
{
SPI_InitTypeDef SPI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable SPI periph clock */ //ok
RCC_APB2PeriphClockCmd(SPIRIT_SPI_PERIPH_RCC, ENABLE);
/* Enable SCLK, MOSI, MISO and CS GPIO clocks */
RCC_AHBPeriphClockCmd(SPIRIT_SPI_PERIPH_MOSI_RCC | SPIRIT_SPI_PERIPH_MISO_RCC | SPIRIT_SPI_PERIPH_SCLK_RCC | SPIRIT_SPI_PERIPH_CS_RCC, ENABLE);
/* Configure the AF for MOSI, MISO and SCLK GPIO pins*/ //ok
GPIO_PinAFConfig(SPIRIT_SPI_PERIPH_MOSI_PORT, SPIRIT_SPI_PERIPH_MOSI_RCC_SOURCE, SPIRIT_SPI_PERIPH_MOSI_AF);
GPIO_PinAFConfig(SPIRIT_SPI_PERIPH_MISO_PORT, SPIRIT_SPI_PERIPH_MISO_RCC_SOURCE, SPIRIT_SPI_PERIPH_MISO_AF);
GPIO_PinAFConfig(SPIRIT_SPI_PERIPH_SCLK_PORT, SPIRIT_SPI_PERIPH_SCLK_RCC_SOURCE, SPIRIT_SPI_PERIPH_SCLK_AF);
/* Configure SPI pins:SCLK, MISO and MOSI */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN; // GPIO_PuPd_UP;// G
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_3;
GPIO_InitStructure.GPIO_Pin = SPIRIT_SPI_PERIPH_SCLK_PIN;
GPIO_Init(SPIRIT_SPI_PERIPH_SCLK_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = SPIRIT_SPI_PERIPH_MISO_PIN;
GPIO_Init(SPIRIT_SPI_PERIPH_MISO_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = SPIRIT_SPI_PERIPH_MOSI_PIN;
GPIO_Init(SPIRIT_SPI_PERIPH_MOSI_PORT, &GPIO_InitStructure);
/* Configure SPI pin: CS */
GPIO_InitStructure.GPIO_Pin = SPIRIT_SPI_PERIPH_CS_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_3;
GPIO_Init(SPIRIT_SPI_PERIPH_CS_PORT, &GPIO_InitStructure);
/* Configure SPI peripheral */
SPI_I2S_DeInit(SPIRIT_SPI_PERIPH_NB);
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
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_64; //SPI_BaudRatePrescaler_4; /*Baud_Rate= fpclk/4=32MHz/4=8MHZ*/
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPIRIT_SPI_PERIPH_NB, &SPI_InitStructure);
SPI_Cmd(SPIRIT_SPI_PERIPH_NB, ENABLE); /* SPIRIT_SPI enable */
SpiritSPICSHigh();
}SpiritStatus SpiritSpiReadRegisters(uint8_t cRegAddress, uint8_t cNbBytes, uint8_t* pcBuffer)
{
uint16_t tmpstatus = 0x0000;
SpiritStatus *status=(SpiritStatus *)&tmpstatus;
uint8_t header[2];
uint8_t dummy=0xFF;
/* Built the header bytes */
header[0]=READ_HEADER;
header[1]=cRegAddress;
SPI_ENTER_CRITICAL();
/* Put the SPI chip select low to start the transaction */
SpiritSPICSLow();
for(volatile uint16_t i=0;i<CS_TO_SCLK_DELAY;i++);
/* Write the header bytes and read the SPIRIT status bytes */
for(int i=0; i<2; i++)
{
while (SPI_I2S_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_I2S_FLAG_TXE) == RESET);
SPI_SendData8(SPIRIT_SPI_PERIPH_NB, header[i]);
while (SPI_I2S_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_I2S_FLAG_RXNE) == RESET);
tmpstatus += ((uint16_t)(SPI_ReceiveData8(SPIRIT_SPI_PERIPH_NB)))<<((1-i)*8);
}
/* Read the registers according to the number of bytes */
for(int index=0; index<cNbBytes; index++)
{
while (SPI_I2S_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_I2S_FLAG_TXE) == RESET);
SPI_SendData8(SPIRIT_SPI_PERIPH_NB, dummy);
while (SPI_I2S_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_I2S_FLAG_RXNE) == RESET);
*pcBuffer = SPI_ReceiveData8(SPIRIT_SPI_PERIPH_NB);
pcBuffer++;
}
while (SPI_I2S_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_I2S_FLAG_TXE) == RESET);
/* Put the SPI chip select high to end the transaction */
SpiritSPICSHigh();
SPI_EXIT_CRITICAL();
return *status;
}