//----------------------------------------------------------------------------
// Simple app for testing sending/receiving AT commands from a port
//----------------------------------------------------------------------------

#include <cstdio>
#include <iostream>
#include <string>

#define G_DEVICE_NAME "/dev/ttyUSB2"

FILE* G_deviceFile = NULL;

void SendCommand(const char* command, int length) {
	fwrite(command, 1, length, G_deviceFile);
}

char* ReadResult() {
	static char buffer[100];
	fread(buffer, 1, 100, G_deviceFile);
	return buffer;
}

using namespace std;

int main() {
	string commandOne = "ATZ";
	string commandTwo = "AT^SYSINFO";
	string commandThree = "AT+VROM?";

	G_deviceFile = fopen(G_DEVICE_NAME, "w+");
	if (G_deviceFile == NULL) {
		cout << "ERROR: could not open file: " << G_DEVICE_NAME << endl;
		return 1;
	}

	cout << "SENT: " << commandOne << endl;
	SendCommand(commandOne.c_str(), commandOne.size());
	cout << "RECV: " << ReadResult() << endl;

	cout << "SENT: " << commandTwo << endl;
	SendCommand(commandTwo.c_str(), commandTwo.size());
	cout << "RECV: " << ReadResult() << endl;

	cout << "SENT: " << commandThree << endl;
	SendCommand(commandThree.c_str(), commandThree.size());
	cout << "RECV: " << ReadResult() << endl;

	fclose(G_deviceFile);
	return 0;
}