doc for fifo, device com if..
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@ -21,7 +21,7 @@ public:
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readIndex(0), writeIndex(0), currentSize(0) {
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}
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bool emtpy() {
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bool empty() {
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return (currentSize == 0);
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}
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@ -45,7 +45,7 @@ public:
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}
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ReturnValue_t retrieve(T *value) {
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if (emtpy()) {
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if (empty()) {
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return EMPTY;
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} else {
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*value = data[readIndex];
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@ -4,12 +4,40 @@
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#include <framework/container/RingBufferBase.h>
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#include <stddef.h>
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/**
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* Circular buffer implementation, useful for buffering into data streams.
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* Note that the deleteData() has to be called to increment the read pointer
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*/
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class SimpleRingBuffer: public RingBufferBase<> {
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public:
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SimpleRingBuffer(uint32_t size, bool overwriteOld);
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virtual ~SimpleRingBuffer();
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/**
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* Write to circular buffer and increment write pointer by amount
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* @param data
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* @param amount
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* @return
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*/
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ReturnValue_t writeData(const uint8_t* data, uint32_t amount);
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/**
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* Read from circular buffer at read pointer
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* @param data
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* @param amount
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* @param readRemaining
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* @param trueAmount
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* @return
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*/
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ReturnValue_t readData(uint8_t* data, uint32_t amount, bool readRemaining = false, uint32_t* trueAmount = NULL);
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/**
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* Delete data starting by incrementing read pointer
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* @param amount
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* @param deleteRemaining
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* @param trueAmount
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* @return
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*/
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ReturnValue_t deleteData(uint32_t amount, bool deleteRemaining = false, uint32_t* trueAmount = NULL);
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private:
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// static const uint8_t TEMP_READ_PTR = 1;
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@ -4,6 +4,22 @@
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#include <framework/devicehandlers/Cookie.h>
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#include <framework/returnvalues/HasReturnvaluesIF.h>
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/**
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* Documentation: Dissertation Baetz p.138
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*
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* This is an interface to decouple device communication from
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* the device handler to allow reuse of these components.
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* It works with the assumption that received data
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* is polled by a component. There are four generic steps of device communication:
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*
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* 1. Send data to a device
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* 2. Get acknowledgement for sending
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* 3. Request reading data from a device
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* 4. Read received data
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*
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* To identify different connection over a single interface can return so-called cookies to components.
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*
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*/
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class DeviceCommunicationIF: public HasReturnvaluesIF {
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public:
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static const uint8_t INTERFACE_ID = CLASS_ID::DEVICE_COMMUNICATION_IF;
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@ -39,7 +55,15 @@ public:
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virtual void close(Cookie *cookie) = 0;
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//SHOULDDO can data be const?
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/**
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* Called by DHB in the SEND_WRITE doSendWrite().
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* This function is used to send data to the physical device
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* by implementing and calling related drivers or wrapper functions.
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* @param cookie
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* @param data
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* @param len
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* @return
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*/
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virtual ReturnValue_t sendMessage(Cookie *cookie,const uint8_t *data,
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uint32_t len) = 0;
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@ -47,6 +71,15 @@ public:
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virtual ReturnValue_t requestReceiveMessage(Cookie *cookie) = 0;
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/**
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* Called by DHB in the GET_WIRTE doGetRead().
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* This function is used to receive data from the physical device
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* by implementing and calling related drivers or wrapper functions.
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* @param cookie
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* @param data
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* @param len
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* @return
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*/
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virtual ReturnValue_t readReceivedMessage(Cookie *cookie, uint8_t **buffer,
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uint32_t *size) = 0;
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@ -28,6 +28,8 @@
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* This can also be applied to uint32_t and uint64_t:
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*
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* 1. Use the AutoSerializeAdapter::deSerialize function with bool bigEndian = true:
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* The pointer *buffer will be incremented automatically by the typeSize of data,
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* so this function can be called on &buffer without adjusting pointer position
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*
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* uint16_t data;
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* int32_t dataLen = sizeof(data);
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