/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32f4xx_hal.h"
#include "stdio.h"
#include "string.h"
#include "i2c-lcd.h"
/* Private includes ---------- ------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
I2C_HandleTypeDef hi2c1;
RTC_TimeTypeDef sTime;
RTC_DateTypeDef sDate;
RTC_HandleTypeDef hrtc;
/* USER CODE BEGIN PV */
char time[10];
char date[10];
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_I2C1_Init(void);
static void MX_RTC_Init(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
void reset_time(void)
{ sTime.Hours = 0x0;
sTime.Minutes = 0x0;
sTime.Seconds = 0x0;
HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BCD);
sDate.WeekDay = RTC_WEEKDAY_SUNDAY;
sDate.Month = RTC_MONTH_JULY;
sDate.Date = 0x31;
sDate.Year = 0x20;
HAL_RTC_SetDate(&hrtc, &sDate, RTC_FORMAT_BCD);
HAL_RTCEx_BKUPWrite(&hrtc, RTC_BKP_DR1, 0x32F2);
}
void set_time(void)
{ sTime.Hours = 0x15;
sTime.Minutes = 0x20;
sTime.Seconds = 0x30;
HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BCD);
sDate.WeekDay = RTC_WEEKDAY_SUNDAY;
sDate.Month = RTC_MONTH_JULY;
sDate.Date = 0x31;
sDate.Year = 0x20;
HAL_RTC_SetDate(&hrtc, &sDate, RTC_FORMAT_BCD);
HAL_RTCEx_BKUPWrite(&hrtc, RTC_BKP_DR1, 0x32F2);
}
void get_time(void)
{
RTC_DateTypeDef gDate;
RTC_TimeTypeDef gTime;
/* Get the RTC current Time */
HAL_RTC_GetTime(&hrtc, &gTime, RTC_FORMAT_BIN);
/* Get the RTC current Date */
HAL_RTC_GetDate(&hrtc, &gDate, RTC_FORMAT_BIN);
/* Display time Format: hh:mm:ss */
sprintf((char*)time,"%02d:%02d:%02d",gTime.Hours, gTime.Minutes, gTime.Seconds);
/* Display date Format: mm-dd-yy */
sprintf((char*)date,"%02d-%02d-%2d",gDate.Date, gDate.Month, 2000 + gDate.Year);
}
void display_time (void)
{
lcd_send_cmd (0x80);
lcd_send_string (time);
lcd_send_cmd (0xc0);
lcd_send_string (date);
}
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
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();
/* 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_I2C1_Init();
MX_RTC_Init();
lcd_init();
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
if(HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_0)== 0)
{ get_time();
display_time();
HAL_Delay(10);
}
else
{
HAL_GPIO_LockPin(GPIOA, GPIO_PIN_0 == 1);
reset_time();
display_time();
HAL_Delay(10);
}
}
}
/* USER CODE BEGIN 3 */
/* USER CODE END 3 */
in the code above when i reset my Stm32f4 board i can see the time and date and when i press the user button ( blue ) the time is reset to 00:00;00 but than it starts increasing by it self so how can i hold it to 00:00:00 until I press ESCAPE key OR RESET key on the board because i just want to increase or decrease the time by the user so that it can be set to any value.
