AT&T Developer Summit Hackathon 2016 / Mbed 2 deprecated frdm_Grove_4-Digit-Display_Example

Freedom Seeed Grove 4-Digit Display Example

Dependencies:   DigitDisplay mbed

Fork of frdm_Grove_4-Digit-Display_Example by Freescale

Simply Import this Program into your mbed compiler
Select Compile to generate the binary file
Plug the Grove Shield v2 on the top of your FRDM-K64F
Connect on end of the 4-pin Grove cable to the 4-digit display module and the other end to the port D2 of the Grove Adapter.

/media/uploads/GregC/4-digit1.jpg

Drag n drop the frdm_Grove_4-Digit-Display_Example_K64F.bin into the mbed drive from your file explorer
Wait for download to complete
Press the Reset/SW1 button of your FRDM-K64F board to launch the program

The screen should start displaying a clock with time defined at 20:14 and middle dots blinking every seconds (see picture below)!!

/media/uploads/GregC/4-digit2.jpg

main.cpp

Committer:
GregC
Date:
2016-01-01
Revision:
0:06b1107d127e

File content as of revision 0:06b1107d127e:

#include "mbed.h"
#include "DigitDisplay.h"

DigitalOut myled(LED1);

DigitDisplay display(D2, D3);

Ticker tick;

uint8_t hour   = 20;
uint8_t minute = 14;
uint8_t second = 0;

void beat()
{
    static uint8_t colon = 0;
    
    display.setColon(colon);
    if (colon) {
        second++;
        if (second >= 60) {
            second = 0;
            minute++;
            if (minute >= 60) {
                minute = 0;
                
                hour++;
                if (hour >= 24) {
                    hour = 0;
                }
                display.write(0, hour / 10);
                display.write(1, hour % 10);
            }
            display.write(2, minute / 10);
            display.write(3, minute % 10);
        }
    }
    colon = 1 - colon;
}

int main() {
    display.write(0, hour / 10);
    display.write(1, hour % 10);
    display.write(2, minute / 10);
    display.write(3, minute % 10);
    display.setColon(true);
    tick.attach(&beat, 0.5);
    while(1) {
        myled = 1;
        wait(0.5);
        myled = 0;
        wait(0.5);
    }
}