YUTO WATANABE / SerialCtrl_OS6

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SerialCtrl.cpp

Committer:
yabumi823
Date:
2019-09-02
Revision:
1:0184f38e2e83
Parent:
SerialCtrl/SerialCtrl.cpp@ 0:0dcd02e8aeab
Child:
4:32f7deade942

File content as of revision 1:0184f38e2e83:

#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;
}