Diff: SerialCtrl.cpp

Revision:

1:0184f38e2e83

Parent:

0:0dcd02e8aeab

Child:

4:32f7deade942

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SerialCtrl.cpp	Mon Sep 02 02:15:34 2019 +0000
@@ -0,0 +1,46 @@
+#include <SerialCtrl.h>
+#include "mbed.h"
+
+SerialCtrl::SerialCtrl(Serial *pts, Timer *ptt) {
+    _Serial = pts;
+    _Timer = ptt;
+    TIMEOUT_MS = 8;
+}
+    
+void SerialCtrl::param(unsigned char header, unsigned char footer) {
+    STX = header;
+    ETX = footer;
+}
+
+bool SerialCtrl::get() {
+    int fail = 0;
+    unsigned char sum = 0;
+    
+    while(1) {
+        if(input() == STX) {
+            break;
+        } else {
+            ++fail;
+            if(fail > FAIL_MAX) return false;
+        }
+    }
+    
+    for(int i=0; i<DATA_N;   ++i) data[i] = input();
+    for(int i=0; i<DATA_N-1; ++i) sum += data[i];
+    
+    if( (sum == data[SUM]) && (input() == ETX) ) {
+        return true;
+    } else {
+        return false;
+    }
+}
+
+unsigned char SerialCtrl::input() {
+    _Timer->reset();
+    while(_Timer->read_ms() < TIMEOUT_MS) {
+        if( _Serial->readable() ) {
+            return _Serial->getc();
+        }
+    }
+    return NUL;
+}