SerialVar.cpp

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// @cond
 
#include "SerialVar.h"
#include "ECUGlobalConfig.h"
#include "PPHelp.h"
 
namespace SerialVar {
 
LOG_TAG LOG_ID = "SerialVar";
 
// The largest ID number defined
static const size_t MAX_ID = (
#define X(type, ID) max(ID,
    SERIALVARS
#undef X
    - 1
#define X(type, ID) )
    SERIALVARS
#undef X
);
 
static uint8_t variables[MAX_ID + 1][8];
 
uint8_t *getVariable(size_t ID) {
    return variables[ID];
}
 
void updateVariable(size_t varID, const uint8_t *dataArr) {
    switch (varID) {
#define X(type, ID)                                                                 \
    case ID:                                                                        \
        memcpy(variables[ID], dataArr, 8);                                          \
        Log.p("serial_var_response", "Data received for varID:", ID);               \
        Log.i(LOG_ID, "Int value:", *(int *)(variables + ID));                      \
        Log.i(LOG_ID, "Approximate Float value:", (int)*(float *)(variables + ID)); \
        break;
        SERIALVARS
#undef X
    default:
        Log.i(LOG_ID, "Invalid varID:", varID);
    }
}
 
void receiveSerialVar() {
    static elapsedMillis timeElapsed;
    static uint8_t buffer[9];
 
    timeElapsed = 0;
    int c = -1;
 
    Log.i(LOG_ID, "Waiting for data");
 
    while (c < 8) {
        if (Serial.available()) {
            buffer[++c] = Serial.read();
        } else if (timeElapsed > 1500) { // This process should be quick
            Log.w(LOG_ID, "Timeout waiting for data");
            return;
        }
    }
 
    uint8_t varID = buffer[0];
 
    updateVariable(varID, buffer + 1);
}
 
} // namespace SerialVar
  // @endcond