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unicyclebloke
Associate III
since ‎2024-03-27
‎2024-05-15

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  • 13 Posts
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User Activity

Struggling to receive messages on SMBUS

2024-05-15
I am studying the SMBUS stack code to understand how it works. My system has a smart battery. The battery periodically emits two messages intended for the charger (charging voltage and charging current). My software is the host. Sending commands to t...

STM32G4 SMBUS goes into error state for some reason

2024-05-10
I am using SMBus to communicate with a smart battery. After looking at the code, I decided against using the SMBUS middleware but to directly using the HAL_SMBUS_xxx calls. My STM32G491 is the host and sending read-word commands to the battery works ...

STM32G491 FDCAN: Issue with error counters

2024-04-11
I have been simulating errors on the bus by removing the other node (a motor controller). As expected I see a number of failed transmissions. I can see that the FDCAN peripheral signals an Active Error on the bus (presumably as a result of not gettin...

STM32G491 FDCAN TxBufferCompleteCallback never called

2024-03-27
I have set up the FDCAN and confirmed that sending single messages works. However, I cannot get the FIFO to work at all - if I queue two messages at the same time, only the first appears on the wire. It is fine if I add a 1ms delay before sending the...
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