Lorenzo Arrigoni
example with F411RE, DS1302 and LCD16x2
Dependencies: mbed DS1302 TextLCD
This is a simple example how to display date and time stored into a DS1302 module. I used a F411RE Nucleo board and a HD44780 LCD 16x2.
Revision 0:2a445788550e, committed 2021-06-09
- Comitter:
- loarri
- Date:
- Wed Jun 09 20:06:08 2021 +0000
- Child:
- 1:515786c57c45
- Commit message:
- Simple test for DS1302 Real Time clock module and a STM NUCLEO F411RE board.
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DS1302.lib Wed Jun 09 20:06:08 2021 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/Sissors/code/DS1302/#9a746f303e59
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Jun 09 20:06:08 2021 +0000
@@ -0,0 +1,42 @@
+/*
+--------------------
+Author: L. Arrigoni
+May 2021
+--------------------
+
+Simple test with RTC module and STM32F411RE Nucleo board.
+DS1302 powered by 3.3 V without pull up resistor on I2C lines
+
+*/
+
+
+#define SCLK D15
+#define IO D14
+#define CE D8
+
+//Comment this line if the DS1302 is already running
+//#define INITIAL_RUN
+
+#include "mbed.h"
+#include "DS1302.h"
+
+DS1302 clk(SCLK, IO, CE);
+
+int main() {
+ #ifdef INITIAL_RUN
+ //clk.set_time(1256729737);
+ clk.set_time(1623257900); //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);
+
+ while(1) {
+ time_t seconds = clk.time(NULL);
+ printf("Date and time: %s\r", ctime(&seconds));
+ wait(1);
+ }
+}
+
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Jun 09 20:06:08 2021 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400 \ No newline at end of file