Posted on June 08, 2017 at 17:04Guys, there is a bug in STM32F100 HAL remapping scheme when SPI1 is remapped. __HAL_AFIO_REMAP_SPI1_ENABLE() macro is extended to SET_BIT(AFIO->MAPR, AFIO_MAPR_SPI1_REMAP) and further to #define CLEAR_BIT(REG, BIT) ((REG) &= ~(BIT)) macro, which is Read-Modify-Write. Non valid data are read for MAPR SWJ_CFG bits, and sub-sequentially written back to MAPR. In most of the cases the debugger configuration is corrupted and the debugger hangs on. Work out: replace the macro with Read-Modify-Write one where you explicitly cast your debugger mode. In my case is SWD, see the solution below:
void HAL_SPI_MspInit(SPI_HandleTypeDef* spiHandle)
{
GPIO_InitTypeDef GPIO_InitStruct;
if(spiHandle->Instance==SPI1)
{
/* USER CODE BEGIN SPI1_MspInit 0 */
uint32_t Temp;
/* USER CODE END SPI1_MspInit 0 */
/* Peripheral clock enable */
__HAL_RCC_SPI1_CLK_ENABLE();
/**SPI1 GPIO Configuration
PB3 ------> SPI1_SCK
PB5 ------> SPI1_MOSI
*/
GPIO_InitStruct.Pin = SPI_SCK_LCD_Pin|SPI_MOSI_LCD_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
//__HAL_AFIO_REMAP_SPI1_ENABLE();
/* USER CODE BEGIN SPI1_MspInit 1 */
//NB:Comment out __HAL_AFIO_REMAP_SPI1_ENABLE(); ^ABOVE^ after CUBE code generation!!!
Temp = AFIO->MAPR;
Temp &= 0xF8FFFFFF; /* Clear whatever was read back in SWJ_CFG */ Temp |= 0x02000001; /* Set SPI Re-map and Set SWJ_CFG to “010� for SWD */ AFIO->MAPR = Temp; /* USER CODE END SPI1_MspInit 1 */
}
}
