/Users/peter>st-info --probe
Found 1 stlink programmers
version: V2J46S7
serial: E1007200D0D2139393740544
flash: 524288 (pagesize: 16384)
sram: 131072
chipid: 0x431
dev-type: STM32F411xC_xE
/Users/peter>st-info --probe
Failed to enter SWD mode
Found 1 stlink programmers
version: V2J46S7
serial: E1007200D0D2139393740544
flash: 0 (pagesize: 0)
sram: 0
chipid: 0x000
dev-type: unknown
/Users/peter>st-flash erase
st-flash 1.8.0
Failed to enter SWD mode
Failed to connect to target
Failed to parse flash type or unrecognized flash type
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* Copyright (c) 2025 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "usb_device.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <string.h>
#include <stdio.h>
#include "usbd_cdc_if.h"
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
HAL_Delay(1000); // Allow debugger to attach before peripherals start
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
DMA_HandleTypeDef hdma_memtomem_dma2_stream0;
/* USER CODE BEGIN PV */
#define USB_BUF_LEN 128
uint8_t usbTxBuf[USB_BUF_LEN];
uint16_t usbTxBufLen;
volatile uint8_t usbTxPending = 0; // send from main loop when ready
uint8_t usbRxBuf[USB_BUF_LEN];
uint16_t usbRxBufLen;
uint8_t usbRxFlag = 0;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_DMA_Init(void);
/* USER CODE BEGIN PFP */
void Process_USB_Command(void);
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
// Buffer for accumulating received bytes until 0x0D
void XferCpltCallback(DMA_HandleTypeDef *hdma);
uint8_t Buffer_Src[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
#define BUFFER_DEST_SIZE (100 * 1024)
int pointer = 0;
uint8_t Buffer_Dest[4];
uint8_t Buffer[BUFFER_DEST_SIZE];
volatile uint32_t gpio_value; // To store the 32-bit GPIO register value
volatile uint8_t transfer_complete = 0; // Flag to indicate transfer completion
char commandBuf[USB_BUF_LEN];
uint16_t commandLen = 0;
void USB_RXCallback(uint8_t *Buf, uint32_t *Len) {
// for (uint32_t i = 0; i < *Len; i++) {
// uint8_t b = Buf[i];
// // Treat both CR and LF as terminators; ignore empty commands (handles CRLF double-terminator)
// if (b == '\r' || b == '\n') {
// if (commandLen > 0) {
// commandBuf[commandLen] = '\0'; // Null-terminate
// if (strcmp(commandBuf, "ping") == 0) {
// strcpy((char*) usbTxBuf, "\r\npong\r\n");
// usbTxBufLen = strlen((char*) usbTxBuf);
// usbTxPending = 1;
// } else if (strcmp(commandBuf, "start") == 0) {
// // Transfer 4 bytes (32-bit GPIO register) from GPIOA IDR to Buffer_Dest
// HAL_DMA_Start_IT(&hdma_memtomem_dma2_stream0,
// (uint32_t) &GPIOA->IDR, (uint32_t) Buffer_Dest, 4);
// strcpy((char*) usbTxBuf, "\r\nstarted\r\n");
// usbTxBufLen = strlen((char*) usbTxBuf);
// usbTxPending = 1;
// } else {
// strcpy((char*) usbTxBuf, "\r\ncommand not found\r\n");
// usbTxBufLen = strlen((char*) usbTxBuf);
// usbTxPending = 1;
// }
// // Reset buffer for next command
// commandLen = 0;
// }
// } else {
// // Accumulate command characters (no per-byte echo to avoid BUSY drops)
// if (commandLen < USB_BUF_LEN - 1) {
// commandBuf[commandLen++] = b;
// }
// }
// }
}
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
HAL_Delay(1000); // Longer window to let SWD attach after reset
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config(); // Configure system clock with safe HSI-only settings
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
// MX_DMA_Init();
// MX_USB_DEVICE_Init();
/* USER CODE BEGIN 2 */
// hdma_memtomem_dma2_stream0.XferCpltCallback = &XferCpltCallback;
//
// // Configure some GPIOA pins as inputs with pulldown to see different values
// GPIO_InitTypeDef GPIO_InitStruct = { 0 };
// GPIO_InitStruct.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 |
// GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7 |
// GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 |
// GPIO_PIN_15; // All pins except PA11/PA12 (USB) and PA13/PA14 (SWD)
// GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
// GPIO_InitStruct.Pull = GPIO_PULLDOWN; // Pull up to see 1s in the register
// HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1) {
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
// If there's a pending USB transmit, try to send it now (retry until not busy)
// if (usbTxPending) {
// if (CDC_Transmit_FS(usbTxBuf, usbTxBufLen) == USBD_OK) {
// usbTxPending = 0;
// }
// }
//
// // Check if DMA transfer completed
// if (transfer_complete) {
// // Store the latest sample in the buffer
// Buffer[pointer + 0] = Buffer_Dest[0];
// Buffer[pointer + 1] = Buffer_Dest[1];
// Buffer[pointer + 2] = Buffer_Dest[2];
// Buffer[pointer + 3] = Buffer_Dest[3];
// pointer += 4;
//
// if (pointer >= BUFFER_DEST_SIZE) {
// // Buffer is full - send all collected data
//
// // Send "started" message first
// strcpy((char*) usbTxBuf, "started\r\n");
// while (CDC_Transmit_FS(usbTxBuf, strlen((char*) usbTxBuf))
// != USBD_OK) {
// HAL_Delay(1);
// }
//
// // Send data in large batches to optimize USB transmission
// char batch_buffer[10240]; // Much larger batch buffer for better performance
// int batch_pos = 0;
//
// for (int x = 0; x < BUFFER_DEST_SIZE; x += 4) {
// int line_len = sprintf(batch_buffer + batch_pos,
// "%d > 0x%02X 0x%02X 0x%02X 0x%02X\r\n", x,
// Buffer[x], Buffer[x + 1], Buffer[x + 2],
// Buffer[x + 3]);
//
// batch_pos += line_len;
//
// // Send batch when buffer is getting full (leave room for next line)
// if (batch_pos > 10150 || x >= BUFFER_DEST_SIZE - 4) {
// while (CDC_Transmit_FS((uint8_t*) batch_buffer,
// batch_pos) != USBD_OK) {
// HAL_Delay(1); // Wait if USB is busy
// }
// batch_pos = 0; // Reset batch buffer
// }
// }
//
// // Send final "end" message
// char hex_string[100];
// sprintf(hex_string, "end\r\n");
// while (CDC_Transmit_FS((uint8_t*) hex_string,
// strlen(hex_string)) != USBD_OK) {
// HAL_Delay(1);
// }
//
// // Reset for next acquisition
// pointer = 0; // Reset pointer to start of buffer
// transfer_complete = 0;
//
// // Stop DMA - acquisition is complete
// // If you want continuous acquisition, comment out the next line
// // HAL_DMA_Abort_IT(&hdma_memtomem_dma2_stream0);
//
// } else {
// // Continue collecting samples
// transfer_complete = 0; // Reset flag
// HAL_DMA_Start_IT(&hdma_memtomem_dma2_stream0,
// (uint32_t) &GPIOA->IDR, (uint32_t) Buffer_Dest, 4);
// }
// }
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Configure the main internal regulator output voltage
*/
__HAL_RCC_PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
* Use HSI as a safe default and drive USB 48MHz from PLLQ.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSEState = RCC_HSE_OFF;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
// HSI=16MHz -> VCOin=1MHz (M=16), VCO=192MHz (N=192), SYSCLK via HSI, USB 48MHz (Q=4)
RCC_OscInitStruct.PLL.PLLM = 16;
RCC_OscInitStruct.PLL.PLLN = 192;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
RCC_OscInitStruct.PLL.PLLQ = 4;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
// Fallback: disable PLL if configuration fails, stay on HSI (already handled)
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_OFF; // Ensure PLL is off
(void)HAL_RCC_OscConfig(&RCC_OscInitStruct); // Reconfigure to HSI-only
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI; // Use HSI as SYSCLK source
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
(void)HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1);
}
/**
* Enable DMA controller clock
* Configure DMA for memory to memory transfers
* hdma_memtomem_dma2_stream0
*/
//static void MX_DMA_Init(void)
//{
//
// /* DMA controller clock enable */
// __HAL_RCC_DMA2_CLK_ENABLE();
//
// /* Configure DMA request hdma_memtomem_dma2_stream0 on DMA2_Stream0 */
// hdma_memtomem_dma2_stream0.Instance = DMA2_Stream0;
// hdma_memtomem_dma2_stream0.Init.Channel = DMA_CHANNEL_0;
// hdma_memtomem_dma2_stream0.Init.Direction = DMA_MEMORY_TO_MEMORY;
// hdma_memtomem_dma2_stream0.Init.PeriphInc = DMA_PINC_ENABLE;
// hdma_memtomem_dma2_stream0.Init.MemInc = DMA_MINC_ENABLE;
// hdma_memtomem_dma2_stream0.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
// hdma_memtomem_dma2_stream0.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
// hdma_memtomem_dma2_stream0.Init.Mode = DMA_NORMAL;
// hdma_memtomem_dma2_stream0.Init.Priority = DMA_PRIORITY_VERY_HIGH;
// hdma_memtomem_dma2_stream0.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
// hdma_memtomem_dma2_stream0.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
// hdma_memtomem_dma2_stream0.Init.MemBurst = DMA_MBURST_SINGLE;
// hdma_memtomem_dma2_stream0.Init.PeriphBurst = DMA_PBURST_SINGLE;
// if (HAL_DMA_Init(&hdma_memtomem_dma2_stream0) != HAL_OK)
// {
// Error_Handler( );
// }
//
// /* DMA interrupt init */
// /* DMA2_Stream0_IRQn interrupt configuration */
// HAL_NVIC_SetPriority(DMA2_Stream0_IRQn, 0, 0);
// HAL_NVIC_EnableIRQ(DMA2_Stream0_IRQn);
//
//}
/**
* @brief GPIO Initialization Function
* @param None
* @retval None
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* USER CODE BEGIN MX_GPIO_Init_1 */
/* USER CODE END MX_GPIO_Init_1 */
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOH_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(LED_GPIO_Port, LED_Pin, GPIO_PIN_RESET);
/*Configure GPIO pin : LED_Pin */
GPIO_InitStruct.Pin = LED_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLDOWN;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(LED_GPIO_Port, &GPIO_InitStruct);
/* USER CODE BEGIN MX_GPIO_Init_2 */
/* USER CODE END MX_GPIO_Init_2 */
}
/* USER CODE BEGIN 4 */
void XferCpltCallback(DMA_HandleTypeDef *hdma) {
// Transfer completed - combine the 4 bytes to a 32-bit value for easier
// interpretation
gpio_value = (Buffer_Dest[3] << 24) | (Buffer_Dest[2] << 16)
| (Buffer_Dest[1] << 8) | Buffer_Dest[0];
transfer_complete = 1;
__NOP(); // Line reached only if transfer was successful. Toggle a breakpoint
// here
}
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
__disable_irq();
while (1) {
}
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line
number, ex: printf("Wrong parameters value: file %s on line %d\r\n", file,
line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
Hi All
Before i burn the program using STM32CubeIDE, st-info can dump out correct info, but not after.
After i burn the program
And st-flash erase not working too, the SWD completely gone !!!
This is my program
thanks