Advanced_Instrumentation_2019 / Mbed OS Lab_4_2018

First laboratory uses each of the five routines with your modifications. These routines illustrate digital output, PWM output, and Analog input and output.

main.cpp@67:9015fa015c73, 2018-08-23 (annotated)

Committer:
Tyari21
Date:
Thu Aug 23 13:49:20 2018 +0000
Revision:
67:9015fa015c73
Parent:
66:0a43d8aeeb76
Child:
68:61bde79fc489
Operational with OS5

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Jonathan Austin 0:2757d7abb7d9 1 #include "mbed.h"
Jonathan Austin 0:2757d7abb7d9 2
Tyari21 67:9015fa015c73 3 Serial pc(USBTX, USBRX);
Tyari21 67:9015fa015c73 4
Tyari21 67:9015fa015c73 5 // Initialize a pins to perform analog and digital output functions
Tyari21 67:9015fa015c73 6 AnalogOut aout(p18);
Tyari21 67:9015fa015c73 7 AnalogIn ain(p20);
Jonathan Austin 0:2757d7abb7d9 8
Tyari21 67:9015fa015c73 9 char text[128];
Tyari21 67:9015fa015c73 10 float voltage;
Tyari21 67:9015fa015c73 11 // Adjust VCC to get best scaling
Tyari21 67:9015fa015c73 12 float VCC1=3.292;
Tyari21 67:9015fa015c73 13 float VCC2=3.292;
Tyari21 67:9015fa015c73 14
Tyari21 67:9015fa015c73 15 int main(void){
Tyari21 67:9015fa015c73 16 while (1) {
Tyari21 67:9015fa015c73 17 pc.printf("Please enter an output voltage\n\r");
Tyari21 67:9015fa015c73 18 pc.scanf("%s", text);
Tyari21 67:9015fa015c73 19 voltage = atof(text);
Tyari21 67:9015fa015c73 20 pc.printf("Voltage output is %f\n\r", voltage);
Tyari21 67:9015fa015c73 21 // set the output value to be voltage/VCC
Tyari21 67:9015fa015c73 22 aout = voltage/VCC1;
Tyari21 67:9015fa015c73 23 // read the output voltage
Tyari21 67:9015fa015c73 24 pc.printf("Voltage read is %f\n\r", ain*VCC2);
Jonathan Austin 0:2757d7abb7d9 25 }
Jonathan Austin 0:2757d7abb7d9 26 }
Jonathan Austin 1:846c97078558 27