I have this program that prins to an LCD with watchdog interrupt. But the problem is that i need to have 2 decimals after seconds.
the code is as follows:
#include <Arduino.h>
#include "DFRobot_RGBLCD.h"
#include <stm32l4xx_hal_iwdg.h>
#include <Wire.h>
#define I2C2_SCL PB10
#define I2C2_SDA PB11
DFRobot_RGBLCD lcd(16,2);
TwoWire dev_i2c (I2C2_SDA, I2C2_SCL);
IWDG_HandleTypeDef watchdog;
void Start();
void Pause();
int paused = 0;
int milli = 0;
volatile byte state = HIGH;
void setup() {
pinMode(A2, INPUT_PULLUP);
pinMode(A3, INPUT_PULLUP);
lcd.init();
Serial.begin(9600);
dev_i2c.begin();
attachInterrupt(A2, Start, FALLING);
attachInterrupt(A3, Pause,RISING);
watchdog.Instance = IWDG;
watchdog.Init.Prescaler = IWDG_PRESCALER_256;
watchdog.Init.Reload = 1220;
watchdog.Init.Window = 0x0FFF;
HAL_IWDG_Init(&watchdog);
delay(1);
}
void loop() {
if(state){
delay(250);
lcd.setCursor(0, 0);
lcd.print("Sekunder: ");
lcd.print(millis()/1000-pause);
delay(100);
}
else{
delay(1000);
paused++;
HAL_IWDG_Refresh(&watchdog);
}
}
void Start(){
state = HIGH;
HAL_IWDG_Refresh(&watchdog);
delay(10);
}
void Pause(){
state = !state;
delay(10);
}
I have tried to put the -pause outside the lcd.print, but that didnt work. i've also tried this codeline: ``` lcd.print(millis()/1000.0, 2-paused);
But it seems like it takes -paused from the number 2. Do anyone have suggestion to how i can make it work so i get the 2 decimals?