Problem with STM32411 Chip

[SpeedyPLH]

HI there,  I have rewitten this simple piece of code from scratch multiple times with no success. I am just attempting to turn on a set of LEDs.  First in the While Loop. Second in the interupt handler for TIM2.  The chip is a STM32F411CCU in a homespun board.  

Stack is 

0x0

<Signal Handler Called>() at 0xfffffff9

0x7db68e2

<Signal Handler Called>() at 0xfffffff9

HAL_TIM_Base_Start_IT() Line 479

Main()   Line 93

Any assistance I can get would be greatly appreciated.

Full files are attached.

#include "main.h"

TIM_HandleTypeDef htim2;

/* Private function prototypes -----------------------------------------------*/

void SystemClock_Config(void);

static void MX_GPIO_Init(void);

static void MX_TIM2_Init(void);

int main(void)

{

  HAL_Init();

  SystemClock_Config();

  MX_GPIO_Init();

  MX_TIM2_Init();

  HAL_TIM_Base_Start_IT(&htim2);

  while (1)

  {

  HAL_GPIO_TogglePin(GPIOA,LED2_Pin);

  HAL_Delay(1000);

  }

}

void SystemClock_Config(void)

{

  RCC_OscInitTypeDef RCC_OscInitStruct = {0};

  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  __HAL_RCC_PWR_CLK_ENABLE();

  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;

  RCC_OscInitStruct.HSIState = RCC_HSI_ON;

  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;

  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;

  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)

  {

    Error_Handler();

  }

  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK

                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;

  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;

  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)

  {

    Error_Handler();

  }

}

static void MX_TIM2_Init(void)

{

  TIM_ClockConfigTypeDef sClockSourceConfig = {0};

  TIM_MasterConfigTypeDef sMasterConfig = {0};

  htim2.Instance = TIM2;

  htim2.Init.Prescaler = 0;

  htim2.Init.CounterMode = TIM_COUNTERMODE_UP;

  htim2.Init.Period = 4294967295;

  htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;

  htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;

  if (HAL_TIM_Base_Init(&htim2) != HAL_OK)

  {

    Error_Handler();

  }

  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;

  if (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != HAL_OK)

  {

    Error_Handler();

  }

  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;

  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;

  if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK)

  {

    Error_Handler();

  }

}

static void MX_GPIO_Init(void)

{

  GPIO_InitTypeDef GPIO_InitStruct = {0};

  __HAL_RCC_GPIOA_CLK_ENABLE();

  HAL_GPIO_WritePin(GPIOA, LED1_Pin|LED2_Pin, GPIO_PIN_RESET);

  GPIO_InitStruct.Pin = LED1_Pin|LED2_Pin;

  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;

  GPIO_InitStruct.Pull = GPIO_NOPULL;

  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;

  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

}

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)

{

  /* Prevent unused argument(s) compilation warning */

  if (htim == &htim2){

  HAL_GPIO_TogglePin(GPIOA,LED1_Pin);

  }

}

void Error_Handler(void)

{

  __disable_irq();

  while (1)

  {

  }

}

#ifdef  USE_FULL_ASSERT

void assert_failed(uint8_t *file, uint32_t line)

{

}

#endif /* USE_FULL_ASSERT */

[AScha.3]

Hi,

>STM32F411CCU in a homespun board

Is this your first test with this board? (ever working before?)

+ How you connect: st-link ? working?

+You have other boards with STM , maybe nucleo board ?

[Tesla DeLorean]

Provide schematic for what you actually built

Make sure BOOT0 is pulled low.

That VCAP pins have correct capacitors and measure 1.25 V there.

That Analogue supply pins are connected.

[SpeedyPLH]

HI TEsla, Ascha,

Here is the relevant part of the Schematic.  It is basically the STM32 chip, an FT201 on i2c, and a couple of test sensors on i2c.  I dont have any i2c elements enabled at the moment as I am trying to narrow the problem down.   

I am using an STLink/V2 to connect.

I have had it working on a number of occasions.  But it has been very unreliable.

It successfully programmes it.  If I debug it (F6), it will die at  HAL_TIM_Base_Start_IT. If I Step into that function (F5), it will complete succesfully, but then dies on the next instruction HAL_GPIO_TogglePin.  I cant work it out.

I am wondering if it has enough power...

[ONadr.1]

Here are the three most common sources of error on your PCB.

1. bad decoupling

2. poorly soldered connections

3. power supply with high noise or unstable under load

And, I think NRST pin should have a capacitor to GND. Usualy 100nF.

[liaifat85]

Since you've said it's a homespun PCB, I recommend testing the PCB. YOu can test it with a multimeter or make a PCB tester like this. 

[Pavel A.]

> if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)

Try to increase number of flash wait states. FLASH_LATENCY_0 -> FLASH_LATENCY_8

[TDK · Accepted solution]

> If I debug it (F6), it will die at  HAL_TIM_Base_Start_IT

What does die mean?

Sounds like it may be swamped with interrupts. Hit pause, see where execution is at. Lower timer interrupt speed, etc.