Diff: main.cpp

Revision:

1:515786c57c45

Parent:

0:2a445788550e

--- a/main.cpp	Wed Jun 09 20:06:08 2021 +0000
+++ b/main.cpp	Tue Jun 15 22:03:39 2021 +0000
@@ -1,11 +1,20 @@
 /*
 --------------------
+DS1302_test_with_STM32_and_LCD16x2
+
 Author: L. Arrigoni
-May 2021
+June 2021
 --------------------
 
-Simple test with RTC module and STM32F411RE Nucleo board.
+Simple test with RTC module driven by a STM32F411RE Nucleo board
+with 16x2 HD44780 LCD.
 DS1302 powered by 3.3 V without pull up resistor on I2C lines
+with callback.
+I2C line for LCD needs 2 pullup resitors 2.2K on SDA e SCL
+D3 (SDA) ,D6 (SCL)
+
+Note: to reset/set the starting date supply the DS1302 with 5V
+
 
 */
 
@@ -19,22 +28,39 @@
 
 #include "mbed.h"
 #include "DS1302.h"
+#include "TextLCD.h"
+
 
 DS1302 clk(SCLK, IO, CE);
+// Set LCD
+I2C i2c_lcd(D3 ,D6); // SDA, SCL
+// LCD instantiation 
+TextLCD_I2C lcd(&i2c_lcd, 0x4E, TextLCD::LCD16x2);      
 
 int main() {
+    lcd.setBacklight(TextLCD::LightOn);
+    lcd.printf("Date&Time \nby L. Arrigoni");
+    wait(3);
+    lcd.cls();
+
     #ifdef INITIAL_RUN
     //clk.set_time(1256729737);
-    clk.set_time(1623257900);  //from https://www.unixtimestamp.com/
+    clk.set_time(1623792610);  //from https://www.unixtimestamp.com/
     #endif
     
     char storedByte = clk.recallByte(0);
     printf("\r\nStored byte was %d, now increasing by one\r\n", storedByte);
     clk.storeByte(0, storedByte + 1);
-    
+    char buffer[32],timebuf_dMyy[14];
     while(1) {
         time_t seconds = clk.time(NULL);
         printf("Date and time: %s\r", ctime(&seconds));
+        strftime(buffer, 32, "%I:%M:%S %p\n", localtime(&seconds));
+        strftime(timebuf_dMyy, 14, "%d-%b-%Y", localtime(&seconds));
+        lcd.locate(0,0);
+        lcd.printf("Date:%s",timebuf_dMyy);
+        lcd.locate(0,1);
+        lcd.printf("Time:%s", buffer);
         wait(1);
     }
 }