Posted on December 11, 2017 at 13:51Hello, I am developing a motor controller using STM32F407, I wrote the code for RTC and uploaded it. I found the time jumps seconds (2 or 3 seconds each time). RTC is crucial in my project as I have to control the motor and the valve. My code is given below, Can anyone tell me a solution.? Thanks in advance.
//////////////////////////// CODE BEGINS///////////////////////////////
#include 'main.h'
#include 'stm32f4xx_hal.h'
/* USER CODE BEGIN Includes */
#include 'stm32f4_discovery_lcd.h'
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/
RTC_HandleTypeDef hrtc;
SRAM_HandleTypeDef hsram1;
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
uint8_t text[50];
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_RTC_Init(void);
static void MX_FSMC_Init(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 */
RTC_TimeTypeDef currentTime;
RTC_DateTypeDef currentDate;
char time[16] = {0};
/* USER CODE END 1 */
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_RTC_Init();
MX_FSMC_Init();
/* USER CODE BEGIN 2 */
HAL_RTC_Init(&hrtc);
STM32f4_Discovery_LCD_Init();
LCD_SetColors(LCD_COLOR_YELLOW, LCD_COLOR_BLACK);
LCD_SetFont(&Font16x24);
LCD_SetColors(LCD_COLOR_YELLOW, LCD_COLOR_BLACK);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
HAL_RTC_GetDate(&hrtc, ¤tDate, RTC_FORMAT_BIN);
HAL_RTC_GetTime(&hrtc, ¤tTime, RTC_FORMAT_BIN);
sprintf(time, '%d:%d:%d:%d \n', currentTime.Hours, currentTime.Minutes, currentTime.Seconds, currentTime.SubSeconds);
LCD_SetFont(&Font16x24);
LCD_SetColors(LCD_COLOR_YELLOW, LCD_COLOR_BLACK);
sprintf((char*)text,'Time = %s',time);
LCD_DisplayString(10,10,(uint8_t *) text);
}
/* USER CODE END 3 */
}
//////////////////////////// CODE ENDS///////////////////////////////
