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R0M1
Associate
August 1, 2024
Solved

LED won't blink

Hi,
First, sorry if my english is bad, I'm French.

I have just bought a NUCLEO F207ZG and I try to blink an LED.

When I upload the program, the console output :

STMicroelectronics ST-LINK GDB server. Version 7.8.0
Copyright (c) 2024, STMicroelectronics. All rights reserved.

Starting server with the following options:
 Persistent Mode : Disabled
 Logging Level : 1
 Listen Port Number : 61234
 Status Refresh Delay : 15s
 Verbose Mode : Disabled
 SWD Debug : Enabled
 InitWhile : Enabled

Waiting for debugger connection...
Debugger connected
Waiting for debugger connection...
Debugger connected
Waiting for debugger connection...
 -------------------------------------------------------------------
 STM32CubeProgrammer v2.17.0 
 -------------------------------------------------------------------

Log output file: C:\Users\romai\AppData\Local\Temp\STM32CubeProgrammer_a13532.log
ST-LINK SN : XXXXXXXXXXXXXXXXXXXXXXXX (I hide the serial number)
ST-LINK FW : V2J45M31
Board : NUCLEO-F207ZG
Voltage : 3.26V
SWD freq : 4000 KHz
Connect mode: Under Reset
Reset mode : Hardware reset
Device ID : 0x411
Revision ID : Rev V
Device name : STM32F2xx
Flash size : 1 MBytes
Device type : MCU
Device CPU : Cortex-M3
BL Version : 0x33

Memory Programming ...
Opening and parsing file: ST-LINK_GDB_server_a13532.srec
 File : ST-LINK_GDB_server_a13532.srec
 Size : 11.88 KB 
 Address : 0x08000000 

Erasing memory corresponding to segment 0:
Erasing internal memory sector 0
Download in Progress:
File download complete
Time elapsed during download operation: 00:00:00.477
Verifying ...
Download verified successfully 
Shutting down...
Exit.

 
And then the program don't run, no LED blinking, I try to reset, nothing...

Here is the program :

/* USER CODE BEGIN Header */
/**
 ******************************************************************************
 * @file : main.c
 * @brief : Main program body
 ******************************************************************************
 * @attention
 *
 * Copyright (c) 2024 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"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
ETH_HandleTypeDef heth;

UART_HandleTypeDef huart3;

PCD_HandleTypeDef hpcd_USB_OTG_FS;

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_ETH_Init(void);
static void MX_USART3_UART_Init(void);
static void MX_USB_OTG_FS_PCD_Init(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* 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 */

 /* 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_ETH_Init();
 MX_USART3_UART_Init();
 MX_USB_OTG_FS_PCD_Init();
 /* USER CODE BEGIN 2 */

 /* USER CODE END 2 */

 /* Infinite loop */
 /* USER CODE BEGIN WHILE */
 while (1)
 {
	HAL_GPIO_TogglePin(LD1_GPIO_Port, LD1_Pin);
	HAL_GPIO_TogglePin(LD2_GPIO_Port, LD2_Pin);
	HAL_GPIO_TogglePin(LD3_GPIO_Port, LD3_Pin);
	HAL_Delay(1000);
 /* USER CODE END WHILE */

 /* USER CODE BEGIN 3 */
 }
 /* USER CODE END 3 */
}

/**
 * @brief System Clock Configuration
 * @retval None
 */
void SystemClock_Config(void)
{
 RCC_OscInitTypeDef RCC_OscInitStruct = {0};
 RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

 /** Initializes the RCC Oscillators according to the specified parameters
 * in the RCC_OscInitTypeDef structure.
 */
 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
 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;
 RCC_OscInitStruct.PLL.PLLM = 13;
 RCC_OscInitStruct.PLL.PLLN = 195;
 RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
 RCC_OscInitStruct.PLL.PLLQ = 5;
 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
 {
 Error_Handler();
 }

 /** 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_PLLCLK;
 RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
 RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
 RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;

 if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK)
 {
 Error_Handler();
 }
}

/**
 * @brief ETH Initialization Function
 * @PAram None
 * @retval None
 */
static void MX_ETH_Init(void)
{

 /* USER CODE BEGIN ETH_Init 0 */

 /* USER CODE END ETH_Init 0 */

 static uint8_t MACAddr[6];

 /* USER CODE BEGIN ETH_Init 1 */

 /* USER CODE END ETH_Init 1 */
 heth.Instance = ETH;
 heth.Init.AutoNegotiation = ETH_AUTONEGOTIATION_ENABLE;
 heth.Init.Speed = ETH_SPEED_100M;
 heth.Init.DuplexMode = ETH_MODE_FULLDUPLEX;
 heth.Init.PhyAddress = LAN8742A_PHY_ADDRESS;
 MACAddr[0] = 0x00;
 MACAddr[1] = 0x00;
 MACAddr[2] = 0x00;
 MACAddr[3] = 0x00;
 MACAddr[4] = 0x00;
 MACAddr[5] = 0x00; /* I HIDE THE MAC ADDRESS */
 heth.Init.MACAddr = &MACAddr[0];
 heth.Init.RxMode = ETH_RXPOLLING_MODE;
 heth.Init.ChecksumMode = ETH_CHECKSUM_BY_HARDWARE;
 heth.Init.MediaInterface = ETH_MEDIA_INTERFACE_RMII;

 /* USER CODE BEGIN MACADDRESS */

 /* USER CODE END MACADDRESS */

 if (HAL_ETH_Init(&heth) != HAL_OK)
 {
 Error_Handler();
 }
 /* USER CODE BEGIN ETH_Init 2 */

 /* USER CODE END ETH_Init 2 */

}

/**
 * @brief USART3 Initialization Function
 * @PAram None
 * @retval None
 */
static void MX_USART3_UART_Init(void)
{

 /* USER CODE BEGIN USART3_Init 0 */

 /* USER CODE END USART3_Init 0 */

 /* USER CODE BEGIN USART3_Init 1 */

 /* USER CODE END USART3_Init 1 */
 huart3.Instance = USART3;
 huart3.Init.BaudRate = 115200;
 huart3.Init.WordLength = UART_WORDLENGTH_8B;
 huart3.Init.StopBits = UART_STOPBITS_1;
 huart3.Init.Parity = UART_PARITY_NONE;
 huart3.Init.Mode = UART_MODE_TX_RX;
 huart3.Init.HwFlowCtl = UART_HWCONTROL_NONE;
 huart3.Init.OverSampling = UART_OVERSAMPLING_16;
 if (HAL_UART_Init(&huart3) != HAL_OK)
 {
 Error_Handler();
 }
 /* USER CODE BEGIN USART3_Init 2 */

 /* USER CODE END USART3_Init 2 */

}

/**
 * @brief USB_OTG_FS Initialization Function
 * @PAram None
 * @retval None
 */
static void MX_USB_OTG_FS_PCD_Init(void)
{

 /* USER CODE BEGIN USB_OTG_FS_Init 0 */

 /* USER CODE END USB_OTG_FS_Init 0 */

 /* USER CODE BEGIN USB_OTG_FS_Init 1 */

 /* USER CODE END USB_OTG_FS_Init 1 */
 hpcd_USB_OTG_FS.Instance = USB_OTG_FS;
 hpcd_USB_OTG_FS.Init.dev_endpoints = 4;
 hpcd_USB_OTG_FS.Init.speed = PCD_SPEED_FULL;
 hpcd_USB_OTG_FS.Init.dma_enable = DISABLE;
 hpcd_USB_OTG_FS.Init.phy_itface = PCD_PHY_EMBEDDED;
 hpcd_USB_OTG_FS.Init.Sof_enable = ENABLE;
 hpcd_USB_OTG_FS.Init.low_power_enable = DISABLE;
 hpcd_USB_OTG_FS.Init.vbus_sensing_enable = ENABLE;
 hpcd_USB_OTG_FS.Init.use_dedicated_ep1 = DISABLE;
 if (HAL_PCD_Init(&hpcd_USB_OTG_FS) != HAL_OK)
 {
 Error_Handler();
 }
 /* USER CODE BEGIN USB_OTG_FS_Init 2 */

 /* USER CODE END USB_OTG_FS_Init 2 */

}

/**
 * @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();
 __HAL_RCC_GPIOB_CLK_ENABLE();
 __HAL_RCC_GPIOD_CLK_ENABLE();
 __HAL_RCC_GPIOG_CLK_ENABLE();

 /*Configure GPIO pin Output Level */
 HAL_GPIO_WritePin(GPIOB, LD1_Pin|LD3_Pin|LD2_Pin, GPIO_PIN_RESET);

 /*Configure GPIO pin Output Level */
 HAL_GPIO_WritePin(USB_PowerSwitchOn_GPIO_Port, USB_PowerSwitchOn_Pin, GPIO_PIN_RESET);

 /*Configure GPIO pin : USER_Btn_Pin */
 GPIO_InitStruct.Pin = USER_Btn_Pin;
 GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 HAL_GPIO_Init(USER_Btn_GPIO_Port, &GPIO_InitStruct);

 /*Configure GPIO pins : LD1_Pin LD3_Pin LD2_Pin */
 GPIO_InitStruct.Pin = LD1_Pin|LD3_Pin|LD2_Pin;
 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 : USB_PowerSwitchOn_Pin */
 GPIO_InitStruct.Pin = USB_PowerSwitchOn_Pin;
 GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
 HAL_GPIO_Init(USB_PowerSwitchOn_GPIO_Port, &GPIO_InitStruct);

 /*Configure GPIO pin : USB_OverCurrent_Pin */
 GPIO_InitStruct.Pin = USB_OverCurrent_Pin;
 GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 HAL_GPIO_Init(USB_OverCurrent_GPIO_Port, &GPIO_InitStruct);

/* USER CODE BEGIN MX_GPIO_Init_2 */
/* USER CODE END MX_GPIO_Init_2 */
}

/* USER CODE BEGIN 4 */

/* 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 */

 
I don't know if there is a boot mode and a run mode 🤷
Thanks!

    This topic has been closed for replies.
    TDK
    TDKBest answer
    August 1, 2024

    After uploading, the code will run automatically.

    > MX_ETH_Init()

    Probably the code is stopped here if you don't have a cable with an active connection attached.

    I'd recommend disabling all peripherals except for the GPIO pin you are toggling.

    "If you feel a post has answered your question, please click ""Accept as Solution""."

    7 replies

    TDK
    TDKBest answer
    August 1, 2024

    After uploading, the code will run automatically.

    > MX_ETH_Init()

    Probably the code is stopped here if you don't have a cable with an active connection attached.

    I'd recommend disabling all peripherals except for the GPIO pin you are toggling.

    "If you feel a post has answered your question, please click ""Accept as Solution""."
    R0M1
    R0M1Author
    Associate
    August 1, 2024

    So do I need to remove the MX_ETH_Init() function and resend the program ?

    TDK
    August 1, 2024

    In the IOC file, where you assign pins and enable peripherals, disable the ethernet and usb peripherals, regenerate the code, then build and run.

    "If you feel a post has answered your question, please click ""Accept as Solution""."
    Andrew Neil
    Super User
    August 1, 2024

    @R0M1 wrote:

    And then the program don't run


    How do you determine that the program doesn't run?

    Have you stepped it in the debugger to see what's happening?

    A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
    R0M1
    R0M1Author
    Associate
    August 1, 2024

    No, just because I don't see the led blinking, I was thinking that the program wasn't running

    Andrew Neil
    Super User
    August 1, 2024

    Programs don't just "not run".

    The processor always runs - unless you've put it to sleep, or turned the power off.

    As @TDK suggested, when code appears to "do nothing", that usually means it is stuck somewhere - maybe trying to initialise some non-existent interface, or in an error handler.

    A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.