Revision 0:94185708309f, committed 2014-02-13

Comitter:

allonq

Date:

Thu Feb 13 02:04:12 2014 +0000

Commit message:

Use FRDM-KL46Z as a analog output source. Parameter adjustable via GUI

Changed in this revision

diff -r 000000000000 -r 94185708309f Analog_output.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Analog_output.cpp	Thu Feb 13 02:04:12 2014 +0000
@@ -0,0 +1,91 @@
+/* This is a mbed program for EE202A, hm1. written by Yujing Qian's team
+   Main idea:
+   Use interrupt to change the default configuration of the analog output.
+   The corresponding GUI is Analog_outpt_control.py
+   All the commented-out code is for debugging use, please ignore them 
+   Author: Yujing Qian, Tianlei Tang                      Feb.12/2014
+*/
+#include "mbed.h"
+#include "math.h"
+#define BUFFER_SIZE 20
+#define PI 3.14159265359
+
+AnalogOut analogout(PTE30);
+Serial pc(USBTX,USBRX);
+
+bool received;
+int buff = 0;
+char rx_buffer[BUFFER_SIZE]; 
+void receive_handler(){
+    while (pc.readable() && buff< BUFFER_SIZE){
+        rx_buffer[buff] = pc.getc();
+        if (rx_buffer[buff] == '#'){
+            rx_buffer[buff] = '\0';
+            /*
+            rx_buffer[12] = '\0';
+            buff=13;
+            rx_buffer[0]=0;
+            rx_buffer[1]=0;
+            int tag=16;
+            char* testx=(char*)&(tag);
+            rx_buffer[2]=(*testx);
+            rx_buffer[3]=0;
+            rx_buffer[4]=0;
+            rx_buffer[5]=0;
+            tag=32;
+            testx=(char*)&(tag);
+            rx_buffer[6]=(*testx);
+            rx_buffer[7]=0;           
+            rx_buffer[8]=0;
+            rx_buffer[9]=0;
+            tag=16;
+            testx=(char*)&(tag);
+            rx_buffer[10]=(*testx);
+            rx_buffer[11]=0;
+            */
+            buff++;
+            received = true; 
+            //pc.printf("done!");
+            break;
+        }
+        buff++;
+    }
+    return;
+}
+
+
+
+
+
+int main() {
+ pc.baud(9600);
+pc.attach(&receive_handler,Serial::RxIrq); 
+ //set interrupt
+float freq=0.25;
+float amp=0.5; 
+float bias=0.5;
+int *read;
+char* select;
+int count=0;
+     while (true) { 
+     if (received) {
+         //pc.printf("yeah");
+         select=rx_buffer;
+         read=(int*)select;
+         amp=read[0]/10000.0;
+         freq=read[1]/10000.0;
+         bias=read[2]/10000.0;
+         buff=0;
+         received=false;}
+     //float tmp;
+     for(count=0; count<120; count++){
+         analogout.write(amp*(sin(2*PI*count/120.0))+bias);
+        // tmp=amp*(sin(2*PI*count/120.0))+bias;
+       // pc.printf("ans=%f\n",tmp);
+         wait((1/(120.0*freq)));
+         }//one cirle
+     
+     }
+}
+
+ 
\ No newline at end of file

diff -r 000000000000 -r 94185708309f mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu Feb 13 02:04:12 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/824293ae5e43
\ No newline at end of file