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Fix: Arduino_CAN::write return value incompatible with interface specification at ArduinoCore-API/HardwareCAN. #956

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merged 1 commit into from
Sep 20, 2024
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Fix: Arduino_CAN::write return value incompatible with interface specification at ArduinoCore-API/HardwareCAN. #956

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5 changes: 4 additions & 1 deletion libraries/Arduino_CAN/src/Arduino_CAN.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -57,7 +57,10 @@ int Arduino_CAN::write(CanMsg const & msg)
CANData,
is_standard_id ? CANStandard : CANExtended);

return _can.write(can_msg);
int const rc = _can.write(can_msg);
if (rc == 0) /* mbed returns 0 in case of failed CAN::write(). */
return -1; /* Note: provide named constant in ArduinoCore-API/HardwareCAN.h, i.e. CAN_WRITE_GENERIC_ERROR */
return 1;
}

size_t Arduino_CAN::available()
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