I'm actually trying to write on a µSD card with a STM32L486QGI6.
The function f_mount() returns FR_NOT_READY whether the µSD is placed or not...
I already checked dozens of tutorials and examples for CubeMX generation (Checked the pins, the SD_Detect in pull-down, Pull-Ups for the other pins except CK, global interrupts, Clock of 40MHz divided by 4, etc...)
There is my code and the CubeMX configurations :
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "fatfs.h"
#include <string.h>
/* USER CODE BEGIN PV */
FRESULT testing;
FRESULT res;
/* USER CODE END PV */
int main(void)
{
/* USER CODE BEGIN 1 */
uint32_t byteswritten, bytesread; /* File write/read counts */
uint8_t wtext[] = "STM32 FATFS works great!"; /* File write buffer */
uint8_t rtext[_MAX_SS]; /* File read buffer */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_DMA_Init();
MX_SDMMC1_SD_Init();
MX_FATFS_Init();
/* USER CODE BEGIN 2 */
res = f_mount(&SDFatFS, (const TCHAR *)SDPath, 1);
const TCHAR tt[]="STM32.txt";
testing = f_open(&SDFile, tt, FA_CREATE_ALWAYS | FA_WRITE);
res = f_write(&SDFile, wtext, strlen((char *)wtext), (void *)&byteswritten);
f_close(&SDFile);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/**
* @brief SDMMC1 Initialization Function
* @param None
* @retval None
*/
static void MX_SDMMC1_SD_Init(void)
{
/* USER CODE BEGIN SDMMC1_Init 0 */
/* USER CODE END SDMMC1_Init 0 */
/* USER CODE BEGIN SDMMC1_Init 1 */
/* USER CODE END SDMMC1_Init 1 */
hsd1.Instance = SDMMC1;
hsd1.Init.ClockEdge = SDMMC_CLOCK_EDGE_RISING;
hsd1.Init.ClockBypass = SDMMC_CLOCK_BYPASS_DISABLE;
hsd1.Init.ClockPowerSave = SDMMC_CLOCK_POWER_SAVE_DISABLE;
hsd1.Init.BusWide = SDMMC_BUS_WIDE_4B;
hsd1.Init.HardwareFlowControl = SDMMC_HARDWARE_FLOW_CONTROL_ENABLE;
hsd1.Init.ClockDiv = 4;
/* USER CODE BEGIN SDMMC1_Init 2 */
/* USER CODE END SDMMC1_Init 2 */
}
/**
* Enable DMA controller clock
*/
static void MX_DMA_Init(void)
{
/* DMA controller clock enable */
__HAL_RCC_DMA2_CLK_ENABLE();
/* DMA interrupt init */
/* DMA2_Channel4_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA2_Channel4_IRQn, 2, 0);
HAL_NVIC_EnableIRQ(DMA2_Channel4_IRQn);
/* DMA2_Channel5_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA2_Channel5_IRQn, 2, 0);
HAL_NVIC_EnableIRQ(DMA2_Channel5_IRQn);
}
/**
* @brief GPIO Initialization Function
* @param None
* @retval None
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOE_CLK_ENABLE();
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
__HAL_RCC_GPIOG_CLK_ENABLE();
HAL_PWREx_EnableVddIO2();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOE, GPIO_PIN_1|GPIO_PIN_0, GPIO_PIN_RESET);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOE, GPIO_PIN_2, GPIO_PIN_SET);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_SET);
/*Configure GPIO pins : PE1 PE2 PE0 */
GPIO_InitStruct.Pin = GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_0;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
/*Configure GPIO pin : SD_DETECT_Pin */
GPIO_InitStruct.Pin = SD_DETECT_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_PULLDOWN;
HAL_GPIO_Init(SD_DETECT_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pin : PB12 */
GPIO_InitStruct.Pin = GPIO_PIN_12;
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);
}
