Search found 5 matches

by extremerotary
Tue May 14, 2024 4:59 am
Forum: Freematics Software
Topic: Troubles reading OBD-data
Replies: 2
Views: 273

Re: Troubles reading OBD-data

From my experience, not all of the ELM327 AT commands were implemented in the firmware that was flashed to the chip. This is why you're getting some question marks back. I've had the same issue myself. From the looks of it, you just want to set a header so you can request manufacturer-specific data....
by extremerotary
Fri May 10, 2024 9:00 am
Forum: Freematics Software
Topic: getVoltage() gets "stuck" and returns same value over and over
Replies: 1
Views: 338

getVoltage() gets "stuck" and returns same value over and over

Stanley, I am using the OBD2UARTv1. My code detects when it can no longer communicate with the vehicle and then puts the ELM/STM chip to sleep using the built in lowpowermode function. Once that completes, I then leavelowpowermode and request the voltage using obd.getVoltage(). Then repeat the loop....
by extremerotary
Wed Feb 28, 2024 8:53 am
Forum: Freematics Software
Topic: Freematics OBDII is unable to upload.
Replies: 1
Views: 4835

Re: Freematics OBDII is unable to upload.

I don't believe you are able to update or access the firmware in that model at all. In the past, I have used a secondary chip (Arduino in my case), hooked it up via a UART connection, and then programmed the Arduino to communicate with the OBD chipset. That is my experience with both the OBD2UARTv1 ...
by extremerotary
Wed Feb 28, 2024 8:47 am
Forum: Freematics Software
Topic: New Function For Requests With Headers (Custom PIDs)
Replies: 0
Views: 2488

New Function For Requests With Headers (Custom PIDs)

I created a new function in the OBD2UART.cpp file. Stanley, can you verify that my format is correct? I believe it needs to be 'header' # 'dataMode' 'pid'. The intention is then to be able to request custom manufacturer-specific PIDs that require a header. Do you believe this will function as desire...
by extremerotary
Tue Dec 19, 2023 3:06 am
Forum: Freematics Software
Topic: Best way to use checkErrorMessage
Replies: 0
Views: 18265

Best way to use checkErrorMessage

Good morning, I am rather novice at C++, but purchased the UART adaptor and have it working very well on my vehicle. While testing, I noted that some PID requests were incrementing the obd.errors variable (which is totally fine). I wanted to determine what the error was so that I could programmatica...