I have two projects. One is an example from ST for a driver controlling stepper motors and the other is my own created with CubeMX where i've added the driver src and header files from the example into to the project. The main.c file is the same for both projects.
For some reason the SPI1 registers of the second project (my one) aren't updating in the HAL_SPI_Init() function but they are updating for the original example project even though the functions are identical. The GPIO init function works fine and all the base addresses and handlers are the standard ones from the HAL yet when i debug the project line by line and view the SPI1 registers in the SFR window they do not change.
Board Init function:
uint8_t Powerstep01_Board_SpiInit(void)
{
HAL_StatusTypeDef status;
/* Initialises the SPI --------------------------------------------------*/
SpiHandle.Instance = SPIx;
SpiHandle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_32;
SpiHandle.Init.Direction = SPI_DIRECTION_2LINES;
SpiHandle.Init.CLKPhase = SPI_PHASE_2EDGE;
SpiHandle.Init.CLKPolarity = SPI_POLARITY_HIGH;
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;
SpiHandle.Init.Mode = SPI_MODE_MASTER;
status = HAL_SPI_Init(&SpiHandle);
return (uint8_t) status;
}
HAL_SPI_Init function: ( Called at line 20 of function above )
HAL_StatusTypeDef HAL_SPI_Init(SPI_HandleTypeDef *hspi)
{
/* Check the SPI handle allocation */
if(hspi == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_SPI_ALL_INSTANCE(hspi->Instance));
assert_param(IS_SPI_MODE(hspi->Init.Mode));
assert_param(IS_SPI_DIRECTION(hspi->Init.Direction));
assert_param(IS_SPI_DATASIZE(hspi->Init.DataSize));
assert_param(IS_SPI_NSS(hspi->Init.NSS));
assert_param(IS_SPI_BAUDRATE_PRESCALER(hspi->Init.BaudRatePrescaler));
assert_param(IS_SPI_FIRST_BIT(hspi->Init.FirstBit));
assert_param(IS_SPI_TIMODE(hspi->Init.TIMode));
if(hspi->Init.TIMode == SPI_TIMODE_DISABLE)
{
assert_param(IS_SPI_CPOL(hspi->Init.CLKPolarity));
assert_param(IS_SPI_CPHA(hspi->Init.CLKPhase));
}
#if (USE_SPI_CRC != 0U)
assert_param(IS_SPI_CRC_CALCULATION(hspi->Init.CRCCalculation));
if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE)
{
assert_param(IS_SPI_CRC_POLYNOMIAL(hspi->Init.CRCPolynomial));
}
#else
hspi->Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
#endif /* USE_SPI_CRC */
if(hspi->State == HAL_SPI_STATE_RESET)
{
/* Allocate lock resource and initialize it */
hspi->Lock = HAL_UNLOCKED;
/* Init the low level hardware : GPIO, CLOCK, NVIC... */
HAL_SPI_MspInit(hspi);
}
hspi->State = HAL_SPI_STATE_BUSY;
/* Disable the selected SPI peripheral */
__HAL_SPI_DISABLE(hspi);
/*----------------------- SPIx CR1 & CR2 Configuration ---------------------*/
/* Configure : SPI Mode, Communication Mode, Data size, Clock polarity and phase, NSS management,
Communication speed, First bit and CRC calculation state */
WRITE_REG(hspi->Instance->CR1, (hspi->Init.Mode | hspi->Init.Direction | hspi->Init.DataSize |
hspi->Init.CLKPolarity | hspi->Init.CLKPhase | (hspi->Init.NSS & SPI_CR1_SSM) |
hspi->Init.BaudRatePrescaler | hspi->Init.FirstBit | hspi->Init.CRCCalculation) );
/* Configure : NSS management */
WRITE_REG(hspi->Instance->CR2, (((hspi->Init.NSS >> 16U) & SPI_CR2_SSOE) | hspi->Init.TIMode));
#if (USE_SPI_CRC != 0U)
/*---------------------------- SPIx CRCPOLY Configuration ------------------*/
/* Configure : CRC Polynomial */
if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE)
{
WRITE_REG(hspi->Instance->CRCPR, hspi->Init.CRCPolynomial);
}
#endif /* USE_SPI_CRC */
#if defined(SPI_I2SCFGR_I2SMOD)
/* Activate the SPI mode (Make sure that I2SMOD bit in I2SCFGR register is reset) */
CLEAR_BIT(hspi->Instance->I2SCFGR, SPI_I2SCFGR_I2SMOD);
#endif /* USE_SPI_CRC */
hspi->ErrorCode = HAL_SPI_ERROR_NONE;
hspi->State = HAL_SPI_STATE_READY;
return HAL_OK;
}
Line 50 where the WRITE_REG function should update the registers, along with the other WRITE_REG lines, as it does in the example project but it does not for my project. (Both codes shown are from my project) What could be the problem stopping the registers from changing?
