Freematics Forum

so seems tehre is no possibility to raise the OBD timeout?

Ok - more research and an answer. For all guys googling and finding this: As I use OBD AND SD.h via SPI, those 2 are interferring. Making sure they are not interfering (talking same time) fixed the problem for me. Still not sure why this is happening as obd and sd card are using different SPI pins. ...

Hi, is there a way to find our which AT commands are supported? I'M reading OBDUART v.1.1 and OBDELM327 v1.5 but soem of the ELM327 v1.5 commands semes not to work. Most importantly I didn't find a way to set the timeout slighlty longer because ATST, ATCTM5 and ATAT0 are not working. any command ref...

can someone explain why file = SD.open("/log.txt", FILE_APPEND);

brings my SPI bus back to life?

Does the STM Pin expect to be connected to 12V Batt Power and goes into poer save mode because it has no power on 12V?

I'm developing on the bench for obvious reasons.

Well seems not to be SPI related to be honest. Did more research and found out that the STM32F103C8T6 seems to enter some kind of standby? LED goes off - Meaning OBD_IND changing state after some time. Once that happens I'm "offline" . A AT command bring the LED back up - menaing the STM32...

No I'm not because I modified mine quite a bit to make it working with electic vehicles.

Are there a lot of changes recently or known bugs with SPI? Which section should I have a detailed look at?

Hi,

I don't get the exact use from that SPI_PIN_READY. Alot of times I run into a loop where SPI_PIN_READY goes HIGH end never returns to low (except I powercycle my Freematics).

Any way to work around this? (Using SPI - Can bus only)

thanks

Hi, I'm using my freematics and almost finished my project for remote EV monitoring when, during a long term test something strange happens. Normally I receive a timeout or response data to my PIDs, but this time I always instantly receive $OBDNO Data (enabled headers) the normal AT commands respond...

perfect for my needs - thank you. Do you know how much power I can draw? Thinking about running an USB Hotspot on it