mr happy / Mbed 2 deprecated flashing_leds

Reads the voltage from Pin18 (out) based on the output from Pin(20) i.e a self checking voltmeter.

main.cpp@0:7c659fdad918, 2011-02-04 (annotated)

Committer:
mrhappy
Date:
Fri Feb 04 22:36:45 2011 +0000
Revision:
0:7c659fdad918
Child:
1:a4c99d145ce3
V0.1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mrhappy 0:7c659fdad918 1 #include "mbed.h"
mrhappy 0:7c659fdad918 2
mrhappy 0:7c659fdad918 3 AnalogIn ain(p20);
mrhappy 0:7c659fdad918 4 DigitalOut led1(LED1);
mrhappy 0:7c659fdad918 5 DigitalOut led2(LED2);
mrhappy 0:7c659fdad918 6 DigitalOut led3(LED3);
mrhappy 0:7c659fdad918 7 DigitalOut led4(LED4);
mrhappy 0:7c659fdad918 8
mrhappy 0:7c659fdad918 9 // use pin 20 and GND to display a binary read out on the lights
mrhappy 0:7c659fdad918 10 // of the voltage across the pins.
mrhappy 0:7c659fdad918 11 // did not validate this in anyway.
mrhappy 0:7c659fdad918 12 // mrhappy
mrhappy 0:7c659fdad918 13
mrhappy 0:7c659fdad918 14 void bindisplay(int i){
mrhappy 0:7c659fdad918 15
mrhappy 0:7c659fdad918 16 // based on Kohei Matsumura code.
mrhappy 0:7c659fdad918 17 wait(0.2);
mrhappy 0:7c659fdad918 18 led1 = i & 0x01;
mrhappy 0:7c659fdad918 19 led2 = i>>1 & 0x01;
mrhappy 0:7c659fdad918 20 led3 = i>>2 & 0x01;
mrhappy 0:7c659fdad918 21 led4 = i>>3 & 0x01;
mrhappy 0:7c659fdad918 22
mrhappy 0:7c659fdad918 23 }
mrhappy 0:7c659fdad918 24
mrhappy 0:7c659fdad918 25 int main() {
mrhappy 0:7c659fdad918 26
mrhappy 0:7c659fdad918 27 while (1){
mrhappy 0:7c659fdad918 28
mrhappy 0:7c659fdad918 29 bindisplay( ain * 0x0f );
mrhappy 0:7c659fdad918 30
mrhappy 0:7c659fdad918 31 }
mrhappy 0:7c659fdad918 32 }