CAN Controller TX does not show signs of life
Can_TX is showing no activity. I can't figure out what I am doing wrong.
I've set up the project with STMCubeMX to use CAN1 on PD0 and PD1. When I attempt to transmit there is no signs of life on the TX pin. Using the STM32F4Discovery right now.
/**
****************************************************************************** * File Name : main.c * Description : Main program body ****************************************************************************** * * COPYRIGHT(c) 2018 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 ------------------------------------------------------------------*/&sharpinclude 'stm32f4xx_hal.h'&sharpinclude 'can.h'&sharpinclude 'gpio.h'/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/CanTxMsgTypeDef TxM;CanRxMsgTypeDef RxM;CAN_FilterConfTypeDef sFilterConfig;/* USER CODE END PV *//* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*//* 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_CAN1_Init();/* USER CODE BEGIN 2 */
/* USER CODE END 2 *//* Infinite loop */
/* USER CODE BEGIN WHILE */ HAL_GPIO_WritePin(GPIOD, GPIO_PIN_12, GPIO_PIN_SET); HAL_GPIO_WritePin(GPIOD, GPIO_PIN_13, GPIO_PIN_RESET); HAL_GPIO_WritePin(GPIOD, GPIO_PIN_14, GPIO_PIN_SET); HAL_GPIO_WritePin(GPIOD, GPIO_PIN_15, GPIO_PIN_RESET); hcan1.pTxMsg = &TxM; hcan1.pRxMsg = &RxM; hcan1.pTxMsg->StdId=0x201; hcan1.pTxMsg->IDE=CAN_ID_STD; hcan1.pTxMsg->RTR=CAN_RTR_DATA; hcan1.pTxMsg->DLC=8; sFilterConfig.FilterActivation = ENABLE; sFilterConfig.FilterNumber = 0; sFilterConfig.FilterMode = CAN_FILTERMODE_IDMASK; sFilterConfig.FilterScale = CAN_FILTERSCALE_32BIT; sFilterConfig.FilterIdHigh = 0x245<<5; sFilterConfig.FilterIdLow = 0; sFilterConfig.FilterMaskIdHigh = 0; sFilterConfig.FilterMaskIdLow = 0; sFilterConfig.FilterFIFOAssignment = 0; sFilterConfig.BankNumber = 14; HAL_CAN_ConfigFilter(&hcan1, &sFilterConfig); while (1) { /* USER CODE END WHILE *//* USER CODE BEGIN 3 */
HAL_GPIO_WritePin(GPIOD, GPIO_PIN_12, GPIO_PIN_RESET); HAL_GPIO_WritePin(GPIOD, GPIO_PIN_13, GPIO_PIN_RESET); HAL_GPIO_WritePin(GPIOD, GPIO_PIN_14, GPIO_PIN_RESET); HAL_GPIO_WritePin(GPIOD, GPIO_PIN_15, GPIO_PIN_RESET); HAL_Delay(250); //HAL_CAN_Transmit(&hcan1,1000); HAL_GPIO_WritePin(GPIOD, GPIO_PIN_12, GPIO_PIN_SET); HAL_GPIO_WritePin(GPIOD, GPIO_PIN_13, GPIO_PIN_SET); HAL_GPIO_WritePin(GPIOD, GPIO_PIN_14, GPIO_PIN_SET); HAL_GPIO_WritePin(GPIOD, GPIO_PIN_15, GPIO_PIN_SET); HAL_Delay(250); } /* USER CODE END 3 */}
/** System Clock Configuration
*/void SystemClock_Config(void){RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct;__HAL_RCC_PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
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 = 4; RCC_OscInitStruct.PLL.PLLN = 168; RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; RCC_OscInitStruct.PLL.PLLQ = 7; 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_DIV4; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
/* SysTick_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);}/* USER CODE BEGIN 4 */
/* USER CODE END 4 */
&sharpifdef 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 */}
&sharpendif
/**
* @} *//**
* @}*//************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
#can-programming