hello,
i am trying to use printf using USART in keil MDK v5:0 using stm32lo53r8t6 nucleo ..
in my source file i have included the retarget and serial .c file and its header file to,but its still not working
i have tryed copying the blink example which was in keil..
below i have posted the code which i have done were i have used two printf statement ..
kindly help me out by telling the issue
/** ****************************************************************************** * 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 <stdio.h> #include "stm32l0xx.h" // Device header #include "stm32l0xx_hal.h" #include "Serial.h"
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/ ADC_HandleTypeDef hadc;
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/ void SystemClock_Config(void); static void MX_GPIO_Init(void); static void MX_ADC_Init(void);
/* USER CODE BEGIN PFP */
/* 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_ADC_Init();
SER_Initialize();
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
printf ("Hello World 1 \n\r"); /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ printf ("Hello World 2\n\r"); /* USER CODE BEGIN 3 */
} /* USER CODE END 3 */
}
/** System Clock Configuration */ void SystemClock_Config(void) {
RCC_OscInitTypeDef RCC_OscInitStruct; RCC_ClkInitTypeDef RCC_ClkInitStruct;
__PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI; RCC_OscInitStruct.MSIState = RCC_MSI_ON; RCC_OscInitStruct.MSICalibrationValue = 0; RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_5; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; HAL_RCC_OscConfig(&RCC_OscInitStruct);
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK; RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_MSI; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0);
HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
/* ADC init function */ void MX_ADC_Init(void) {
ADC_ChannelConfTypeDef sConfig;
/**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion) */ hadc.Instance = ADC1; hadc.Init.OversamplingMode = DISABLE; hadc.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV1; hadc.Init.Resolution = ADC_RESOLUTION12b; hadc.Init.SamplingTime = ADC_SAMPLETIME_1CYCLE_5; hadc.Init.ScanDirection = ADC_SCAN_DIRECTION_UPWARD; hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT; hadc.Init.ContinuousConvMode = DISABLE; hadc.Init.DiscontinuousConvMode = DISABLE; hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIG_EDGE_NONE; hadc.Init.DMAContinuousRequests = DISABLE; hadc.Init.EOCSelection = EOC_SINGLE_CONV; hadc.Init.Overrun = OVR_DATA_PRESERVED; hadc.Init.LowPowerAutoWait = DISABLE; hadc.Init.LowPowerFrequencyMode = DISABLE; hadc.Init.LowPowerAutoOff = DISABLE; HAL_ADC_Init(&hadc);
/**Configure for the selected ADC regular channel to be converted. */ sConfig.Channel = ADC_CHANNEL_0; HAL_ADC_ConfigChannel(&hadc, &sConfig);
/** Pinout Configuration */ void MX_GPIO_Init(void) {
/* GPIO Ports Clock Enable */ __GPIOA_CLK_ENABLE();
/* USER CODE BEGIN 4 */
/* 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\r\n", file, line) */ /* USER CODE END 6 */
#endif
/** * @} */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
Thanks for the reply
my doubt is in which file should i check in order to understand the printf low level function call..
In my file i could only find out the definition of printf in (stdio.h file) thats the definition..
Hope you reply fast
Regards Austin