Hi Does anybody have a working example of an STM32F407VG reading and or writing an SD card using SPI3.
I have tried everything but always fails on mount with fsMediaError am at my wits end, i have even tried to follow example http://www.keil.com/appnotes/files/apnt_273.pdf and still not working.
SPI Config
/* SPI3 init function */ static void MX_SPI3_Init(void) { hspi3.Instance = SPI3; hspi3.Init.Mode = SPI_MODE_MASTER; hspi3.Init.Direction = SPI_DIRECTION_2LINES; hspi3.Init.DataSize = SPI_DATASIZE_8BIT; hspi3.Init.CLKPolarity = SPI_POLARITY_LOW; hspi3.Init.CLKPhase = SPI_PHASE_1EDGE; hspi3.Init.NSS = SPI_NSS_SOFT; hspi3.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_32; hspi3.Init.FirstBit = SPI_FIRSTBIT_MSB; hspi3.Init.TIMode = SPI_TIMODE_DISABLE; hspi3.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE; hspi3.Init.CRCPolynomial = 10; if (HAL_SPI_Init(&hspi3) != HAL_OK) { Error_Handler(); } __SPI3_CLK_ENABLE(); }
GPIO Config
static void MX_GPIO_Init(void) { GPIO_InitTypeDef GPIO_InitStruct; /* GPIO Ports Clock Enable */ __HAL_RCC_GPIOC_CLK_ENABLE(); __HAL_RCC_GPIOH_CLK_ENABLE(); __HAL_RCC_GPIOA_CLK_ENABLE(); __HAL_RCC_GPIOB_CLK_ENABLE(); __HAL_RCC_GPIOD_CLK_ENABLE(); /*Configure GPIO pin Output Level */ HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2, GPIO_PIN_RESET); /*Configure GPIO pin Output Level */ HAL_GPIO_WritePin(GPIOD, GPIO_PIN_3, GPIO_PIN_RESET); /*Configure GPIO pins : PB0 PB1 PB2 */ GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); /*Configure GPIO pin : PD3 */ GPIO_InitStruct.Pin = GPIO_PIN_3; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(GPIOD, &GPIO_InitStruct); GPIO_InitStruct.Pin = GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_PULLUP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; GPIO_InitStruct.Alternate = GPIO_AF6_SPI3; HAL_GPIO_Init(GPIOC, &GPIO_InitStruct); }
Blink Thread - This Flashes every Second
/* USER CODE BEGIN 4 */ void Blink(void const *arg){ while (1){ osDelay(1000); HAL_GPIO_TogglePin(GPIOB,GPIO_PIN_0); WriteFile(); } }
It calls the writefile routine which should mount the card but fails.
int32_t fs_mc_spi_control_ss (uint32_t drive_num, uint32_t ss){ if (ss==0) { HAL_GPIO_WritePin(GPIOD,GPIO_PIN_3,GPIO_PIN_SET); return 1; } else { HAL_GPIO_WritePin(GPIOD,GPIO_PIN_3,GPIO_PIN_RESET); return 0; } } void WriteFile() { fsStatus st; if (finit("") == fsOK) { st=fmount(""); if (st == fsOK) HAL_GPIO_TogglePin(GPIOB,GPIO_PIN_1); ; } FILE *f=fopen("try.txt","a"); if (f!=NULL) { HAL_GPIO_TogglePin(GPIOB,GPIO_PIN_2); fprintf(f,"Test\n"); fclose(f); } }
The fs_mc_spi_control_ss function is setting the CS pin, I have tried reversing polarity. Also tried to lengthen the delay on the thread.
Thanks so much for your time.
Enable the clock before you initialize the interface, the part is synchronous
__SPI3_CLK_ENABLE(); // DO IT BEFORE
OK, I tried moving the __SPI3_CLK_ENABLE(); Still no luck, could cry at this point :(