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This lib works fine for PID codes. But there are useful bits of info (voltage, version) that don't use PID codes, they use ELM327 commands. In another Arduino OBD library, I found the relevant calls (below). Can they be adapted and merged into the lib? I don't think I can adapt them myself.
float COBD::getVoltage()
{
char buf[32];
if (sendCommand("ATRV\r", buf, sizeof(buf)) > 0) {
char* p = getResultValue(buf);
if (p) return (float)atof(p);
}
return 0;
}
byte COBD::getVersion()
{
byte version = 0;
for (byte n = 0; n < 3; n++) {
char buffer[32];
if (sendCommand("ATI\r", buffer, sizeof(buffer), 200)) {
char *p = strchr(buffer, ' ');
if (p) {
p += 2;
version = (*p - '0') * 10 + (*(p + 2) - '0');
break;
}
}
}
return version;
}
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