The CAN Buffer size is three Messages big.
For me it looks like the *software driver isn't trying to send anything*.
Why:
because of the debug output (first post):
can_state == 3 means CAN_READY (see: m)
and after three Messages the tx_empty_before isn't 1 anymore and the returncode turns to be -1 ...
Search found 3 matches
- Sun Oct 19, 2014 6:55 pm
- Forum: STM32 Support
- Topic: CAN-Bus bringup problems
- Replies: 4
- Views: 2803
- Sun Oct 19, 2014 6:48 pm
- Forum: STM32 Support
- Topic: CAN-Bus bringup problems
- Replies: 4
- Views: 2803
Re: CAN-Bus bringup problems
Looking at board schematic, PA11 and PA12 are connected to the USB circuitry, it is possible this is the problem.
Giovanni
Hi Giovanni,
thanks for the response
Hardware: There shouldn't be any restrictions if the USB-Data arent plugged in/connected, which in my case isn't the case
Software ...
- Sun Oct 19, 2014 5:14 pm
- Forum: STM32 Support
- Topic: CAN-Bus bringup problems
- Replies: 4
- Views: 2803
CAN-Bus bringup problems
Hi,
I'm trying a couple of hours now to bringup my CAN communication and I think I need help..
I basically copied the ChibiOS_2.6.3/testhal/STM32F1xx/CAN project and I'm trying to get it working. Fact is that I'm not getting any data out of the tx/rx pin.
Hardware Setup:
⋅ Board ...
I'm trying a couple of hours now to bringup my CAN communication and I think I need help..
I basically copied the ChibiOS_2.6.3/testhal/STM32F1xx/CAN project and I'm trying to get it working. Fact is that I'm not getting any data out of the tx/rx pin.
Hardware Setup:
⋅ Board ...