Getting various CAN bus errors on otherwise working bus
I have a two-node bus: the master is an stm32f373 processor, the slave is a motor driver (Maxon Motor EPOS4).
I am using the HAL libraries for the ST chip and initially the bus worked fine. Over the course of a couple weeks, I started getting errors on the bus which results in a "bus off" (BOFF) error.
The errors I get include FORM, ACK, CRC, and BR (bit recessive). I have a break point set in the code for when the Error Status Register (ESR) becomes non-zero. ESR contains the transmit and receive error counters as well as the last error and warning, passive error, and bus off flags.
Bus is terminated properly at 59.5Ω.
With a different error occurring each time, it's hard to troubleshoot.
Is there one problem that maybe causing errors on the bus?
The bus runs successfully for long periods of time.
Here is a logic analyzer scan of the bus. On the left are transmit and receive messages in pairs and then it just stops. Almost 10ms later, a bunch of gibberish is received.
Thanks!
arm can-bus peripherals
asked Dec 31 '18 at 23:24
GordonGordon
10311
add a comment |
I have a two-node bus: the master is an stm32f373 processor, the slave is a motor driver (Maxon Motor EPOS4).
I am using the HAL libraries for the ST chip and initially the bus worked fine. Over the course of a couple weeks, I started getting errors on the bus which results in a "bus off" (BOFF) error.
The errors I get include FORM, ACK, CRC, and BR (bit recessive). I have a break point set in the code for when the Error Status Register (ESR) becomes non-zero. ESR contains the transmit and receive error counters as well as the last error and warning, passive error, and bus off flags.
Bus is terminated properly at 59.5Ω.
With a different error occurring each time, it's hard to troubleshoot.
Is there one problem that maybe causing errors on the bus?
The bus runs successfully for long periods of time.
Here is a logic analyzer scan of the bus. On the left are transmit and receive messages in pairs and then it just stops. Almost 10ms later, a bunch of gibberish is received.
Thanks!
arm can-bus peripherals
asked Dec 31 '18 at 23:24
GordonGordon
10311
add a comment |
I have a two-node bus: the master is an stm32f373 processor, the slave is a motor driver (Maxon Motor EPOS4).
I am using the HAL libraries for the ST chip and initially the bus worked fine. Over the course of a couple weeks, I started getting errors on the bus which results in a "bus off" (BOFF) error.
The errors I get include FORM, ACK, CRC, and BR (bit recessive). I have a break point set in the code for when the Error Status Register (ESR) becomes non-zero. ESR contains the transmit and receive error counters as well as the last error and warning, passive error, and bus off flags.
Bus is terminated properly at 59.5Ω.
With a different error occurring each time, it's hard to troubleshoot.
Is there one problem that maybe causing errors on the bus?
The bus runs successfully for long periods of time.
Here is a logic analyzer scan of the bus. On the left are transmit and receive messages in pairs and then it just stops. Almost 10ms later, a bunch of gibberish is received.
Thanks!
arm can-bus peripherals
asked Dec 31 '18 at 23:24
GordonGordon
10311
I have a two-node bus: the master is an stm32f373 processor, the slave is a motor driver (Maxon Motor EPOS4).
I am using the HAL libraries for the ST chip and initially the bus worked fine. Over the course of a couple weeks, I started getting errors on the bus which results in a "bus off" (BOFF) error.
The errors I get include FORM, ACK, CRC, and BR (bit recessive). I have a break point set in the code for when the Error Status Register (ESR) becomes non-zero. ESR contains the transmit and receive error counters as well as the last error and warning, passive error, and bus off flags.
Bus is terminated properly at 59.5Ω.
With a different error occurring each time, it's hard to troubleshoot.
Is there one problem that maybe causing errors on the bus?
The bus runs successfully for long periods of time.
Here is a logic analyzer scan of the bus. On the left are transmit and receive messages in pairs and then it just stops. Almost 10ms later, a bunch of gibberish is received.
Thanks!
arm can-bus peripherals
arm can-bus peripherals
asked Dec 31 '18 at 23:24
GordonGordon
10311
asked Dec 31 '18 at 23:24
GordonGordon
10311
edited Jan 1 at 1:01
Gordon
asked Dec 31 '18 at 23:24
GordonGordon
10311
asked Dec 31 '18 at 23:24
GordonGordon
10311
asked Dec 31 '18 at 23:24
GordonGordon
10311
10311
add a comment |
add a comment |
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