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freemodbus: fix event processing failure after destroy

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Closes https://github.com/espressif/esp-idf/issues/5275
This commit is contained in:
aleks 2020-05-13 15:59:36 +02:00
parent 763aa66036
commit 940e108c4b
1 changed files with 6 additions and 1 deletions
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7
components/freemodbus/port/portevent_m.c
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@ -274,7 +274,12 @@ eMBMasterReqErrCode eMBMasterWaitRequestFinish( void ) {
}
} else {
ESP_LOGE(MB_PORT_TAG,"%s: Incorrect event or timeout xRecvedEvent = 0x%x", __func__, uxBits);
assert(0);
// https://github.com/espressif/esp-idf/issues/5275
// if a no event is received, that means vMBMasterPortEventClose()
// has been closed, so event group has been deleted by FreeRTOS, which
// triggers the send of 0 value to the event group to unlock this task
// waiting on it. For this patch, handles it as a time out without assert.
eErrStatus = MB_MRE_TIMEDOUT;
}
return eErrStatus;
}