Revision 0:6c6d961dc8b3, committed 2015-05-10

Comitter:

steeven

Date:

Sun May 10 13:16:26 2015 +0000

Commit message:

init

Changed in this revision

diff -r 000000000000 -r 6c6d961dc8b3 Scope.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Scope.cpp	Sun May 10 13:16:26 2015 +0000
@@ -0,0 +1,70 @@
+#include "Scope.h"
+
+namespace steeven {
+
+ScopePin::ScopePin(PinName pin, char id, Scope *scope) :
+        _pin(pin), _id(id), _scope(scope) {
+    _pin.fall(this, &ScopePin::on_fall);
+    _pin.rise(this, &ScopePin::on_rise);
+}
+
+void ScopePin::on_fall() {
+    _scope->log(_id, 0);
+}
+void ScopePin::on_rise() {
+    _scope->log(_id, 1);
+}
+
+Scope::Scope(int buf_len) :
+        _buf_len(buf_len) {
+    _cnt = 0;
+    _buf_cnt = 0;
+    _buf = new ScopeData[buf_len];
+    _timer.start();
+}
+
+void Scope::add(PinName pin, const char *name) {
+    new ScopePin(pin, _cnt, this);
+    _names[_cnt] = name;
+//  printf("%s ", _names[_cnt]);
+    _cnt++;
+}
+
+void Scope::log(char id, int v) {
+    if (_buf_cnt >= _buf_len)
+        error("Scope buffer overflow!\n");
+    _buf[_buf_cnt].id = (char) (v << 7) + id;
+    _buf[_buf_cnt].time = _timer.read();
+    _buf_cnt++;
+}
+
+void Scope::dump(BufferedSerial *logger) {
+    int i, j, k;
+
+    logger->putc('\n');
+
+    // channel names;
+    logger->puts("time\t");
+    for (i = 0; i < _cnt; ++i) {
+        logger->puts(_names[i]);
+        logger->putc('\t');
+    }
+    logger->putc('\n');
+
+    // channel data
+    for (j = 0; j < _cnt; ++j) { // buy channel
+        for (i = 0; i < _buf_cnt; ++i) { // find in all data
+            if ((_buf[i].id & 0x7f) == j) { // if this pin
+                logger->printf("%f\t", _buf[i].time);
+                for (k = 0; k < j; ++k)
+                    logger->putc('\t');
+                logger->printf("%d", ((_buf[i].id & 0x80) > 0 ? 1 : 0) + j * 2); // add offset
+                logger->putc('\n');
+            }
+        }
+    }
+
+    //clear data
+    _buf_cnt = 0;
+}
+}

diff -r 000000000000 -r 6c6d961dc8b3 Scope.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Scope.h	Sun May 10 13:16:26 2015 +0000
@@ -0,0 +1,65 @@
+/*
+ * BreathLed.h
+ *
+ *  Created on: 2015/4/6
+ *      Author: steeven@gmail.com
+ */
+
+#ifndef SCOPE_H_
+#define SCOPE_H_
+
+#include "mbed.h"
+#include "BufferedSerial/BufferedSerial.h"
+
+#define SCOPE_PINS 16
+
+namespace steeven {
+
+/** A simple Oscilloscope that log each pin's data change
+ * Please dump log and analyze using excel x-y chart type!
+ */
+
+typedef struct {
+    char id; //bit 7: val, bit 0-6:id
+    float time;
+} ScopeData;
+
+class Scope {
+public:
+    Scope(int buf_len);
+
+    void add(PinName pin, const char *name);
+
+    void log(char id, int v);
+
+    void dump(  BufferedSerial *logger);
+
+protected:
+    const char *_names[SCOPE_PINS];
+    int _cnt;
+
+    Timer _timer;
+
+    ScopeData *_buf;
+    int _buf_len;
+    int _buf_cnt;
+};
+
+class ScopePin {
+
+public:
+    ScopePin(PinName pin, char id, Scope *scope);
+
+protected:
+    void on_fall();
+    void on_rise();
+
+    InterruptIn _pin;
+    char _id;
+    Scope *_scope;
+};
+
+}
+;
+
+#endif