Scope.h

00001 /*
00002  * BreathLed.h
00003  *
00004  *  Created on: 2015/4/6
00005  *      Author: steeven@gmail.com
00006  */
00007 
00008 #ifndef SCOPE_H_
00009 #define SCOPE_H_
00010 
00011 #include "mbed.h"
00012 #include "BufferedSerial/BufferedSerial.h"
00013 
00014 #define SCOPE_PINS 16
00015 
00016 namespace steeven {
00017 
00018 /** A simple Oscilloscope that log each pin's data change
00019  * Please dump log and analyze using excel x-y chart type!
00020  */
00021 
00022 typedef struct {
00023     char id; //bit 7: val, bit 0-6:id
00024     float time;
00025 } ScopeData;
00026 
00027 class Scope {
00028 public:
00029     Scope(int buf_len);
00030 
00031     void add(PinName pin, const char *name);
00032 
00033     void log(char id, int v);
00034 
00035     void dump(  BufferedSerial *logger);
00036 
00037 protected:
00038     const char *_names[SCOPE_PINS];
00039     int _cnt;
00040 
00041     Timer _timer;
00042 
00043     ScopeData *_buf;
00044     int _buf_len;
00045     int _buf_cnt;
00046 };
00047 
00048 class ScopePin {
00049 
00050 public:
00051     ScopePin(PinName pin, char id, Scope *scope);
00052 
00053 protected:
00054     void on_fall();
00055     void on_rise();
00056 
00057     InterruptIn _pin;
00058     char _id;
00059     Scope *_scope;
00060 };
00061 
00062 }
00063 ;
00064 
00065 #endif