71 lines
2.3 KiB
C++
71 lines
2.3 KiB
C++
#include "ArcsecDatalinkLayer.h"
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ArcsecDatalinkLayer::ArcsecDatalinkLayer() : decodeRingBuf(BUFFER_LENGTHS, true) { slipInit(); }
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ArcsecDatalinkLayer::~ArcsecDatalinkLayer() {}
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ReturnValue_t ArcsecDatalinkLayer::checkRingBufForFrame(const uint8_t** decodedFrame,
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size_t& frameLen) {
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size_t currentLen = decodeRingBuf.getAvailableReadData();
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decodeRingBuf.readData(rxAnalysisBuffer, currentLen);
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for (size_t idx = 0; idx < currentLen; idx++) {
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enum arc_dec_result decResult =
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arc_transport_decode_body(rxAnalysisBuffer[idx], &slipInfo, decodedRxFrame, &rxFrameSize);
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switch (decResult) {
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case ARC_DEC_INPROGRESS: {
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break;
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}
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case ARC_DEC_ERROR_FRAME_SHORT: {
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decodeRingBuf.deleteData(idx);
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return REPLY_TOO_SHORT;
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}
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case ARC_DEC_ERROR_CHECKSUM:
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decodeRingBuf.deleteData(idx);
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return CRC_FAILURE;
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case ARC_DEC_ASYNC:
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case ARC_DEC_SYNC: {
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// Reset length of SLIP struct for next frame
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slipInfo.length = 0;
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if (decodedFrame != nullptr) {
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*decodedFrame = decodedRxFrame;
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}
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frameLen = rxFrameSize;
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decodeRingBuf.deleteData(idx);
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return returnvalue::OK;
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}
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default:
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sif::debug << "ArcsecDatalinkLayer::decodeFrame: Unknown result code" << std::endl;
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break;
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return returnvalue::FAILED;
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}
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}
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decodeRingBuf.deleteData(currentLen);
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return DEC_IN_PROGRESS;
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}
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ReturnValue_t ArcsecDatalinkLayer::feedData(const uint8_t* rawData, size_t rawDataLen) {
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if (rawDataLen > 4096) {
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sif::error << "ArcsecDatalinklayer: Can not write more than 4096 bytes to ring buffer"
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<< std::endl;
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return returnvalue::FAILED;
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}
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return decodeRingBuf.writeData(rawData, rawDataLen);
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}
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void ArcsecDatalinkLayer::reset() {
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slipInit();
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decodeRingBuf.clear();
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}
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void ArcsecDatalinkLayer::slipInit() {
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slip_decode_init(rxBufferArc, sizeof(rxBufferArc), &slipInfo);
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}
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void ArcsecDatalinkLayer::encodeFrame(const uint8_t* data, size_t length, const uint8_t** txFrame,
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size_t& size) {
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arc_transport_encode_body(data, length, txEncoded, &size);
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if (txFrame != nullptr) {
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*txFrame = txEncoded;
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}
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}
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