Problem with STm32 discovery GPIO using HAL Driver

[varunnalam]

Posted on March 11, 2015 at 11:21

Hi

I am new to Stm32 devices and am trying to get the discovery working for basic functions.I have followed the manual to set up and run the GPIO pins, But I donot seem to get it working. The examples provided with the stm32 discovery board work fine. Can anyone please tell me where I am making a mistake? Thank You for all the Help

/* Includes ------------------------------------------------------------------*/
#include ''main.h''
static
void
SystemClock_Config(
void
);
static
void
Error_Handler(
void
);
UART_HandleTypeDef UartHandle;
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitTypeDef GPIO_Uart;
int
main(
void
)
{
//int i=0;
//char *p,*q=''VARUN'';
HAL_Init();
SystemClock_Config();
__GPIOD_CLK_ENABLE(); 
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Pin |= GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15|GPIO_PIN_12;
GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(GPIOD, &GPIO_InitStructure);
HAL_GPIO_WritePin(GPIOD,15,SET);
/*__GPIOA_CLK_ENABLE();
GPIO_Uart.Mode = GPIO_MODE_AF_PP;
GPIO_Uart.Pull = GPIO_PULLUP;
GPIO_Uart.Pin |= GPIO_PIN_1|GPIO_PIN_2;
GPIO_Uart.Speed = GPIO_SPEED_LOW;
HAL_GPIO_Init(GPIOA, &GPIO_Uart);
UartHandle.Init.BaudRate = 9600;
UartHandle.Init.WordLength = UART_WORDLENGTH_8B;
UartHandle.Init.StopBits = UART_STOPBITS_1;
UartHandle.Init.Parity = UART_PARITY_NONE;
UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
UartHandle.Init.Mode = UART_MODE_TX_RX;
UartHandle.Init.OverSampling = UART_OVERSAMPLING_16;
HAL_UART_Init(&UartHandle);
*/
/* Infinite loop */
while
(1)
{
// HAL_UART_Transmit(&UartHandle,(uint8_t *)(q),5,5000);
HAL_GPIO_TogglePin(GPIOD,15);
HAL_Delay(500);
}
}
/**
* @brief System Clock Configuration
* The system Clock is configured as follow : 
* System Clock source = PLL (HSE)
* SYSCLK(Hz) = 168000000
* HCLK(Hz) = 168000000
* AHB Prescaler = 1
* APB1 Prescaler = 4
* APB2 Prescaler = 2
* HSE Frequency(Hz) = 8000000
* PLL_M = 8
* PLL_N = 336
* PLL_P = 2
* PLL_Q = 7
* VDD(V) = 3.3
* Main regulator output voltage = Scale1 mode
* Flash Latency(WS) = 5
* @param None
* @retval None
*/
static
void
SystemClock_Config(
void
)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
/* Enable Power Control clock */
__HAL_RCC_PWR_CLK_ENABLE();
/* The voltage scaling allows optimizing the power consumption when the device is 
clocked below the maximum system frequency, to update the voltage scaling value 
regarding system frequency refer to product datasheet. */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/* Enable HSE Oscillator and activate PLL with HSE as source */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 8;
RCC_OscInitStruct.PLL.PLLN = 336;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
if
(HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 
clocks dividers */
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | 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_5) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/* STM32F405x/407x/415x/417x Revision Z devices: prefetch is supported */
if
(HAL_GetREVID() == 0x1001)
{
/* Enable the Flash prefetch */
__HAL_FLASH_PREFETCH_BUFFER_ENABLE();
}
}
/**
* @brief This function is executed in case of error occurrence.
* @param None
* @retval None
*/
static
void
Error_Handler(
void
)
{
/* User may add here some code to deal with this error */
while
(1)
{
}
}
#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 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) */
/* Infinite loop */
while
(1)
{
}
}
#endif

#gpio #stm32 #discovery

[Amel NASRI]

Posted on March 11, 2015 at 12:06

HAL_GPIO_TogglePin(GPIOD,

GPIO_PIN_15

);-Mayla-

[varunnalam]

Posted on March 18, 2015 at 11:23

Thanks a lot...Was completely new to working on STM and thought the error was in the setup.