Posted on July 07, 2015 at 17:14
Hello everybody,
I face to a weird problem and any help could be decisive
🙂 (and I will be grateful of course)
I transfer a project which implement USB, I²C and SPI from STM32F407 to STM32F446 but I am unable to do work SPI3. Clock work well, but I have no signal on MOSI pin (PC1).
For test this I send in an infinity loop the byte 0xAA
uint8_t dataWriteEnable[1] = {0xAA};
while (1)
{
dataWriteEnable[0]=HAL_SPI_Transmit(&SpiHandle,dataWriteEnable,1,200);
}
My hardware initialisation is below (
SPIx_SCK_GPIO_CLK_ENABLE(),MOSI and MISO...corresponding to GPIOC)
:
void HAL_SPI_MspInit(SPI_HandleTypeDef *hspi)
{
GPIO_InitTypeDef GPIO_InitStruct;
if (hspi->Instance == SPIx)
{
/*##-1- Enable peripherals and GPIO Clocks #################################*/
/* Enable GPIO TX/RX clock */
SPIx_SCK_GPIO_CLK_ENABLE();
SPIx_MISO_GPIO_CLK_ENABLE();
SPIx_MOSI_GPIO_CLK_ENABLE();
/* Enable SPI clock */
//SPIx_CLK_ENABLE();
/*##-2- Configure peripheral GPIO ##########################################*/
/* SPI mosi GPIO pin configuration */
GPIO_InitStruct.Pin = GPIO_PIN_1;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI3;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_10|GPIO_PIN_11;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
GPIO_InitStruct.Alternate = GPIO_AF6_SPI3;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
//SPI CS GPIOC13 as chip select (output push pull)
GPIO_InitStruct.Pin = SPIx_CS_PIN;
GPIO_InitStruct.Pull = GPIO_PULLUP;//GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
HAL_GPIO_Init(SPIx_CS_GPIO_PORT, &GPIO_InitStruct);
//CS = 1
HAL_GPIO_WritePin(SPIx_CS_GPIO_PORT, SPIx_CS_PIN,GPIO_PIN_SET);
//W is on Port G
GPIO_InitStruct.Pin = SPIx_W_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(SPIx_W_PORT, &GPIO_InitStruct);
//w=1 (write enable)
HAL_GPIO_WritePin(SPIx_W_PORT, SPIx_W_PIN,GPIO_PIN_SET);
//hold is on Port I
GPIO_InitStruct.Pin = SPIx_HOLD_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
HAL_GPIO_Init(SPIx_HOLD_PORT, &GPIO_InitStruct);
HAL_GPIO_WritePin(SPIx_HOLD_PORT, SPIx_HOLD_PIN,GPIO_PIN_SET);
}
}
and my SPI inititalisation is :
int8_t configSPI(SPI_HandleTypeDef *hspi, uint32_t BaudRatePrescaler)
{
/*---------------Configure the SPI peripheral---------------------------*/
/*---------------CPOL and CPHA must have the same value-----------------*/
HAL_SPI_DeInit(hspi);
/* Set the SPI parameters */
SpiHandle.Instance = SPIx;
SpiHandle.Init.Mode = SPI_MODE_MASTER;
SpiHandle.Init.BaudRatePrescaler = BaudRatePrescaler;
SpiHandle.Init.Direction = SPI_DIRECTION_2LINES;
SpiHandle.Init.CLKPhase = SPI_PHASE_1EDGE;
SpiHandle.Init.CLKPolarity = SPI_POLARITY_LOW;
SpiHandle.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLED;
SpiHandle.Init.CRCPolynomial = 7;
SpiHandle.Init.DataSize = SPI_DATASIZE_8BIT;
SpiHandle.Init.FirstBit = SPI_FIRSTBIT_MSB;
SpiHandle.Init.NSS = SPI_NSS_SOFT;
SpiHandle.Init.TIMode = SPI_TIMODE_DISABLED;
if(HAL_SPI_Init(hspi) != HAL_OK)
{
/* Initialization Error */
return HAL_ERROR;
}
return HAL_OK;
}
I really don't see why that does not work anymore.
