Zhangcheng Huang / Mbed 2 deprecated sine_HZC

This program is used for generate sine wave

Dependencies:   mbed

sine.cpp@1:fb7df7817e53, 2014-02-15 (annotated)

Committer:
stanislashzc
Date:
Sat Feb 15 06:13:37 2014 +0000
Revision:
1:fb7df7817e53
UCLA ee 202a homework1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
stanislashzc 1:fb7df7817e53 1 #include "mbed.h"
stanislashzc 1:fb7df7817e53 2 AnalogOut DA(PTE30);
stanislashzc 1:fb7df7817e53 3
stanislashzc 1:fb7df7817e53 4 Serial pc(USBTX, USBRX); // tx, rx
stanislashzc 1:fb7df7817e53 5
stanislashzc 1:fb7df7817e53 6 float sine;
stanislashzc 1:fb7df7817e53 7 float A = 1.0;
stanislashzc 1:fb7df7817e53 8 float w = 1.0;
stanislashzc 1:fb7df7817e53 9 float pi = 3.14159;
stanislashzc 1:fb7df7817e53 10
stanislashzc 1:fb7df7817e53 11
stanislashzc 1:fb7df7817e53 12 void callback() {
stanislashzc 1:fb7df7817e53 13 printf("%c\n", pc.getc());
stanislashzc 1:fb7df7817e53 14 wait(1);
stanislashzc 1:fb7df7817e53 15 pc.printf("Amplitude A(<=1.0):\n");
stanislashzc 1:fb7df7817e53 16 pc.scanf("%f", &A);
stanislashzc 1:fb7df7817e53 17 pc.printf("%f\n", A);
stanislashzc 1:fb7df7817e53 18 pc.printf("Angular Rate w:\n");
stanislashzc 1:fb7df7817e53 19 pc.scanf("%f", &w);
stanislashzc 1:fb7df7817e53 20 pc.printf("%f\n", w);
stanislashzc 1:fb7df7817e53 21
stanislashzc 1:fb7df7817e53 22 }
stanislashzc 1:fb7df7817e53 23
stanislashzc 1:fb7df7817e53 24
stanislashzc 1:fb7df7817e53 25 int main(void) {
stanislashzc 1:fb7df7817e53 26
stanislashzc 1:fb7df7817e53 27
stanislashzc 1:fb7df7817e53 28 pc.attach(&callback);
stanislashzc 1:fb7df7817e53 29
stanislashzc 1:fb7df7817e53 30 while(1){
stanislashzc 1:fb7df7817e53 31 for (float i=0; i<(3600); i++) {
stanislashzc 1:fb7df7817e53 32
stanislashzc 1:fb7df7817e53 33 sine = 0.5*A*(sin(w*i/(1800)*pi)+1);
stanislashzc 1:fb7df7817e53 34 DA.write(sine);
stanislashzc 1:fb7df7817e53 35 pc.printf("%f ",sine);
stanislashzc 1:fb7df7817e53 36 wait(0.001);
stanislashzc 1:fb7df7817e53 37
stanislashzc 1:fb7df7817e53 38 }
stanislashzc 1:fb7df7817e53 39 }
stanislashzc 1:fb7df7817e53 40 }