diff --git a/devicehandlers/DeviceCommunicationIF.h b/devicehandlers/DeviceCommunicationIF.h index b24e7d37..41d47cd3 100644 --- a/devicehandlers/DeviceCommunicationIF.h +++ b/devicehandlers/DeviceCommunicationIF.h @@ -8,6 +8,7 @@ class DeviceCommunicationIF: public HasReturnvaluesIF { public: static const uint8_t INTERFACE_ID = CLASS_ID::DEVICE_COMMUNICATION_IF; + // Standard error codes static const ReturnValue_t INVALID_COOKIE_TYPE = MAKE_RETURN_CODE(0x01); static const ReturnValue_t NOT_ACTIVE = MAKE_RETURN_CODE(0x02); static const ReturnValue_t INVALID_ADDRESS = MAKE_RETURN_CODE(0x03); @@ -16,9 +17,10 @@ public: static const ReturnValue_t PROTOCOL_ERROR = MAKE_RETURN_CODE(0x06); static const ReturnValue_t CANT_CHANGE_REPLY_LEN = MAKE_RETURN_CODE(0x07); - virtual ~DeviceCommunicationIF() { + // Can be used in readReceivedMessage() + static const ReturnValue_t NO_REPLY_RECEIVED = MAKE_RETURN_CODE(0xA1); - } + virtual ~DeviceCommunicationIF() {} virtual ReturnValue_t open(Cookie **cookie, uint32_t address, uint32_t maxReplyLen) = 0; diff --git a/devicehandlers/DeviceHandlerBase.cpp b/devicehandlers/DeviceHandlerBase.cpp index ca8fa85c..30228dd4 100644 --- a/devicehandlers/DeviceHandlerBase.cpp +++ b/devicehandlers/DeviceHandlerBase.cpp @@ -588,7 +588,7 @@ void DeviceHandlerBase::doGetRead() { return; } - if (receivedDataLen == 0) + if (receivedDataLen == 0 or result == DeviceCommunicationIF::NO_REPLY_RECEIVED) return; if (wiretappingMode == RAW) {