NEO-6M STM32F103 Nucleo

[bartocham]

Posted on October 29, 2016 at 17:55

Hi!

I'm trying to communicate with NEO-6M GPS module by nucleo F NEO_6M starts transmitting date by itselfs, I've check TX signal on a scope and I can see frames. And now straight to the problem - I'm not getting and interrupt on micro. I'm using UART2 - RX on PA3. My code:

/* USART2 init function */
void MX_USART2_UART_Init(void)
{
huart2.Instance = USART2;
huart2.Init.BaudRate = 9600;
huart2.Init.WordLength = UART_WORDLENGTH_8B;
huart2.Init.StopBits = UART_STOPBITS_1;
huart2.Init.Parity = UART_PARITY_NONE;
huart2.Init.Mode = UART_MODE_RX;
huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart2.Init.OverSampling = UART_OVERSAMPLING_16;
HAL_UART_Init(&huart2);
}
/.../
/* USER CODE BEGIN 4 */
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart2)
{
}
/* USER CODE END 4 */

smt32f1xx_it.c

/* USER CODE BEGIN 1 */
void USART2_IRQHandler(void)
{
HAL_UART_IRQHandler(&huart2);
}
/* USER CODE END 1 */

and MSP

void HAL_UART_MspInit(UART_HandleTypeDef* huart)
{
GPIO_InitTypeDef GPIO_InitStruct;
if(huart->Instance==USART2)
{
/* USER CODE BEGIN USART2_MspInit 0 */
/* USER CODE END USART2_MspInit 0 */
/* Peripheral clock enable */
__USART2_CLK_ENABLE();
/**USART2 GPIO Configuration 
PA2 ------> USART2_TX
PA3 ------> USART2_RX 
*/
GPIO_InitStruct.Pin = USART_TX_Pin|USART_RX_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* USER CODE BEGIN USART2_MspInit 1 */
HAL_NVIC_SetPriority(USART2_IRQn,1,0);
HAL_NVIC_EnableIRQ(USART2_IRQn);
/* USER CODE END USART2_MspInit 1 */
}
}

To test I'm simply setting breakpoint onUSART2_IRQHandler and I'm not hiting it. Any clues? Thanks! Matthew #!stm32-!f103-!uart-!gps

[Tesla DeLorean]

Posted on October 29, 2016 at 18:15

Can't really help with Cube/HAL issues

Be aware that on the NUCLEO the primary connectivity of USART2 PA2/PA3 is to the VCP provided by the ST-LINK. This can conflict with Shield connectivity, and you'll want to eliminate potential clashes, and solder bridges related to this. If you just configure PA2/PA3 as GPIO Inputs, you should be able to see shield data by opening the VCP in Windows. I've used some NEO-6M shields on NUCLEO's where I un-jumper the RX/TX pin on the shield and then connect to another USART with jumper cables.

[bartocham]

Posted on October 30, 2016 at 08:23

Hi Clive,

I don't have to use UART2 so I've changed it to UART1 with PA10 as RX but I'm still not hitting breakpoint on interrupt function :|I have no idea what's happening, it should be simple, nvic is set an enabled and it should be working but it's not.

[Tesla DeLorean]

Posted on October 30, 2016 at 13:39

Ok, but wouldn't there need to be HAL code on your end to initiate a receive/transmit for it to enable interrupts on the USART side?

[bartocham]

Posted on November 01, 2016 at 10:53

Yeah you're right.

I've noticed that right after me previous msg. It's working. If someone will looking for code in future :

/**
******************************************************************************
* File Name : main.c
* Description : Main program body
******************************************************************************
*
* COPYRIGHT(c) 2016 STMicroelectronics
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ''AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include ''stm32f1xx_hal.h''
#include ''gps.h''
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/
UART_HandleTypeDef huart3;
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
uint8_t GPS_RxBuffer[1024];
uint8_t UART_RxData[2];
uint16_t Rx_indx;
nmea_msg gpsx;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART3_UART_Init(void);
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart3);
/* USER CODE END PFP */
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
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();
/* Configure the system clock */
SystemClock_Config();
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_USART3_UART_Init();
/* USER CODE BEGIN 2 */
HAL_UART_Receive_IT(&huart3, UART_RxData, 1);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/** System Clock Configuration
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = 16;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI_DIV2;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL16;
HAL_RCC_OscConfig(&RCC_OscInitStruct);
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_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2);
HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
/* SysTick_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}
/* USART3 init function */
void MX_USART3_UART_Init(void)
{
huart3.Instance = USART3;
huart3.Init.BaudRate = 9600;
huart3.Init.WordLength = UART_WORDLENGTH_8B;
huart3.Init.StopBits = UART_STOPBITS_1;
huart3.Init.Parity = UART_PARITY_NONE;
huart3.Init.Mode = UART_MODE_RX;
huart3.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart3.Init.OverSampling = UART_OVERSAMPLING_16;
HAL_UART_Init(&huart3);
}
/** Configure pins as 
* Analog 
* Input 
* Output
* EVENT_OUT
* EXTI
PA2 ------> USART2_TX
PA3 ------> USART2_RX
*/
void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* GPIO Ports Clock Enable */
__GPIOC_CLK_ENABLE();
__GPIOD_CLK_ENABLE();
__GPIOA_CLK_ENABLE();
__GPIOB_CLK_ENABLE();
/*Configure GPIO pin : B1_Pin */
GPIO_InitStruct.Pin = B1_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_EVT_RISING;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(B1_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pins : USART_TX_Pin USART_RX_Pin */
GPIO_InitStruct.Pin = USART_TX_Pin|USART_RX_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/*Configure GPIO pin : LD2_Pin */
GPIO_InitStruct.Pin = LD2_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
HAL_GPIO_Init(LD2_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_RESET);
}
/* USER CODE BEGIN 4 */
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart3)
{
uint16_t i;
if(huart3->Instance == USART3)
{
if(Rx_indx==0) {for(i=0;i<1024;i++) GPS_RxBuffer[i]=0;}
GPS_RxBuffer[Rx_indx++]=UART_RxData[0];
if(Rx_indx==1024)
{
GPSMSG_Analysis(&gpsx,(uint8_t*)GPS_RxBuffer);
Rx_indx=0;
}
HAL_UART_Receive_IT(huart3, UART_RxData, 1);
}
}
/* USER CODE END 4 */
#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

'', file, line) */
/* USER CODE END 6 */
}
#endif
/**
* @}
*/ 
/**
* @}
*/ 
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/