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@@ -5,6 +5,7 @@ build | |
build_stm | ||
build_linux | ||
build_mbed | ||
dep | ||
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# Ignore the Meson packagecache dir | ||
packagecache | ||
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/* | ||
* Cicada communication library | ||
* Copyright (C) 2023 Okrasolar | ||
* | ||
* Permission is hereby granted, free of charge, to any person obtaining a copy of | ||
* this software and associated documentation files (the "Software"), to deal in | ||
* the Software without restriction, including without limitation the rights to | ||
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of | ||
* the Software, and to permit persons to whom the Software is furnished to do so, | ||
* subject to the following conditions: | ||
* | ||
* The above copyright notice and this permission notice shall be included in all | ||
* copies or substantial portions of the Software. | ||
* | ||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS | ||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR | ||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | ||
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | ||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
* | ||
*/ | ||
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#include "cicada/commdevices/cc1352p7.h" | ||
#include "cicada/commdevices/atcommdevice.h" | ||
#include <cstddef> | ||
#include <cstdint> | ||
#include <cstdio> | ||
#include <cstring> | ||
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using namespace Cicada; | ||
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const uint16_t CC1352P7_MAX_RX = 1220; // Match network buffer of the modem | ||
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CC1352P7CommDevice::CC1352P7CommDevice( | ||
IBufferedSerial& serial, uint8_t* readBuffer, uint8_t* writeBuffer, Size bufferSize) : | ||
ATCommDevice(serial, readBuffer, writeBuffer, bufferSize) | ||
{ | ||
resetStates(); | ||
} | ||
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CC1352P7CommDevice::CC1352P7CommDevice(IBufferedSerial& serial, uint8_t* readBuffer, | ||
uint8_t* writeBuffer, Size readBufferSize, Size writeBufferSize) : | ||
ATCommDevice(serial, readBuffer, writeBuffer, readBufferSize, writeBufferSize) | ||
{ | ||
resetStates(); | ||
} | ||
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void CC1352P7CommDevice::resetStates() | ||
{ | ||
_serial.flushReceiveBuffers(); | ||
_readBuffer.flush(); | ||
_writeBuffer.flush(); | ||
_lbFill = 0; | ||
_sendState = 0; | ||
_replyState = 0; | ||
_connectState = IPCommDevice::notConnected; | ||
_bytesToWrite = 0; | ||
_bytesToReceive = 0; | ||
_bytesToRead = 0; | ||
_waitForReply = NULL; | ||
_stateBooleans = LINE_READ; | ||
} | ||
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bool CC1352P7CommDevice::fillLineBuffer() | ||
{ | ||
// Buffer reply from modem in line buffer | ||
// Returns true when enough data to be parsed is available. | ||
if (_stateBooleans & LINE_READ) { | ||
while (_serial.bytesAvailable()) { | ||
char c = _serial.read(); | ||
_lineBuffer[_lbFill++] = c; | ||
if (c == '\n' || c == '>' || _lbFill == LINE_MAX_LENGTH) { | ||
_lineBuffer[_lbFill] = '\0'; | ||
_lbFill = 0; | ||
return true; | ||
} | ||
} | ||
} | ||
return false; | ||
} | ||
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bool CC1352P7CommDevice::sendCiprcvdata() | ||
{ | ||
if (_serial.readBufferSize() - _serial.bytesAvailable() > 30 | ||
&& _readBuffer.spaceAvailable() > 0) { | ||
// Make sure there is enough space in the serial buffer for the reply | ||
Size bytesToReceive = _serial.readBufferSize() - _serial.bytesAvailable() - 30; | ||
if (bytesToReceive > _bytesToReceive) | ||
bytesToReceive = _bytesToReceive; | ||
// Make sure there is enough space in the local device buffer | ||
if (bytesToReceive > _readBuffer.spaceAvailable()) | ||
bytesToReceive = _readBuffer.spaceAvailable(); | ||
if (bytesToReceive > CC1352P7_MAX_RX) | ||
bytesToReceive = CC1352P7_MAX_RX; | ||
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char sizeStr[6]; | ||
sprintf(sizeStr, "%u", (unsigned int)bytesToReceive); | ||
_serial.write((const uint8_t*)"AT+CIPRECVDATA="); | ||
_serial.write((const uint8_t*)sizeStr); | ||
_serial.write((const uint8_t*)_lineEndStr); | ||
return true; | ||
} else { | ||
return false; | ||
} | ||
} | ||
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bool CC1352P7CommDevice::parseCiprecvdata() | ||
{ | ||
if (strncmp(_lineBuffer, "+CIPRECVDATA", 12) == 0) { | ||
int bytesToRead; | ||
sscanf(_lineBuffer + 13, "%d", &bytesToRead); | ||
_bytesToReceive -= bytesToRead; | ||
_bytesToRead += bytesToRead; | ||
_stateBooleans &= ~LINE_READ; | ||
return true; | ||
} | ||
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return false; | ||
} | ||
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void CC1352P7CommDevice::run() | ||
{ | ||
// If the serial device is net yet open, try to open it | ||
if (!_serial.isOpen()) { | ||
if (!_serial.open()) { | ||
_sendState = serialError; | ||
} | ||
return; | ||
} | ||
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// If a modem reset is pending, handle it | ||
if (_stateBooleans & RESET_PENDING) { | ||
_serial.flushReceiveBuffers(); | ||
_bytesToRead = 0; | ||
_bytesToReceive = 0; | ||
_bytesToWrite = 0; | ||
_sendState = sendCipclose; | ||
_replyState = okReply; | ||
_waitForReply = NULL; | ||
_stateBooleans &= ~RESET_PENDING; | ||
if (_connectState >= intermediate) { | ||
connect(); | ||
} | ||
} | ||
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// Buffer data from the modem | ||
bool parseLine = fillLineBuffer(); | ||
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// Check if there is data from the modem | ||
if (parseLine) { | ||
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// Log the current modem states | ||
logStates(_sendState, _replyState); | ||
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// Handle error states | ||
if (strncmp(_lineBuffer, "ERROR", 5) == 0 | ||
|| (_sendState >= connected && strncmp(_lineBuffer, "SEND FAIL", 9) == 0)) { | ||
_stateBooleans |= RESET_PENDING; | ||
_connectState = generalError; | ||
_waitForReply = NULL; | ||
return; | ||
} | ||
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// If sent a command, process standard reply | ||
if (_waitForReply) { | ||
if (strncmp(_lineBuffer, _waitForReply, strlen(_waitForReply)) == 0) { | ||
_waitForReply = NULL; | ||
} | ||
} | ||
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// Process incoming data which need special treatment | ||
switch (_replyState) { | ||
case parseStateCiprecvdata: | ||
if (parseCiprecvdata()) { | ||
_replyState = okReply; | ||
_sendState = receiving; | ||
} | ||
break; | ||
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default: | ||
break; | ||
} | ||
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// In connected state, check for new data or IP connection close | ||
if (_sendState >= connected) { | ||
if (strncmp(_lineBuffer, "+IPD,", 4) == 0) { | ||
int bytes; | ||
sscanf(_lineBuffer + 5, "%d", &bytes); | ||
_bytesToReceive = bytes; | ||
_stateBooleans |= DATA_PENDING; | ||
} else if (strncmp(_lineBuffer, "CLOSED", 6) == 0) { | ||
_stateBooleans &= ~IP_CONNECTED; | ||
} | ||
} | ||
} | ||
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// When disconnecting was requested, flush read buffer first | ||
else if ((_stateBooleans & DISCONNECT_PENDING) && _sendState == receiving) { | ||
flushReadBuffer(); | ||
} | ||
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// Don't go on when waiting for a reply | ||
if (_waitForReply || _replyState != okReply) | ||
return; | ||
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// Don't go on if space in write buffer is low | ||
if (_serial.spaceAvailable() < 20) | ||
return; | ||
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// Connection state machine | ||
switch (_sendState) { | ||
case notConnected: | ||
_connectState = IPCommDevice::notConnected; | ||
handleConnect(connecting); | ||
break; | ||
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case connecting: | ||
_connectState = IPCommDevice::intermediate; | ||
_stateBooleans |= LINE_READ; | ||
_waitForReply = _okStr; | ||
_sendState = sendCipstart; | ||
sendCommand("ATE0"); | ||
break; | ||
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case sendCipstart: { | ||
char portStr[6]; | ||
snprintf(portStr, sizeof(portStr), "%u", _port); | ||
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_serial.write((const uint8_t*)"AT+CIPSTART"); | ||
if (_type == UDP) { | ||
_serial.write((const uint8_t*)"=\"UDP\",\""); | ||
} else { | ||
_serial.write((const uint8_t*)"=\"TCP\",\""); | ||
} | ||
// TODO: Escape characters | ||
_serial.write((const uint8_t*)_host); | ||
_serial.write((const uint8_t*)"\","); | ||
_serial.write((const uint8_t*)portStr); | ||
_serial.write((const uint8_t*)_lineEndStr); | ||
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_waitForReply = _okStr; | ||
_sendState = finalizeConnect; | ||
break; | ||
} | ||
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case finalizeConnect: | ||
_connectState = IPCommDevice::connected; | ||
_sendState = connected; | ||
_stateBooleans |= IP_CONNECTED; | ||
break; | ||
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case connected: | ||
if (_writeBuffer.bytesAvailable()) { | ||
if (prepareSending(false)) { | ||
_serial.write((const uint8_t*)_lineEndStr); | ||
_connectState = IPCommDevice::transmitting; | ||
_sendState = sendDataState; | ||
} | ||
} else if (_stateBooleans & DATA_PENDING) { | ||
_stateBooleans &= ~DATA_PENDING; | ||
_connectState = IPCommDevice::receiving; | ||
_sendState = sendCiprecvdata; | ||
} else { | ||
_connectState = IPCommDevice::connected; | ||
if (_stateBooleans & IP_CONNECTED) { | ||
if (handleDisconnect(sendCipclose)) { | ||
} | ||
} else { | ||
_stateBooleans &= ~DISCONNECT_PENDING; | ||
_sendState = finalizeDisconnect; | ||
} | ||
} | ||
break; | ||
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// States after connecting | ||
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case sendDataState: | ||
sendData(); | ||
_waitForReply = _okStr; | ||
_sendState = connected; | ||
break; | ||
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case sendCiprecvdata: | ||
if (handleDisconnect(sendCipclose)) { | ||
break; | ||
} | ||
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if (_bytesToReceive > 0) { | ||
if (sendCiprcvdata()) { | ||
_sendState = waitReceive; | ||
_replyState = parseStateCiprecvdata; | ||
} | ||
} else { | ||
_sendState = connected; | ||
} | ||
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break; | ||
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case waitReceive: | ||
break; | ||
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case receiving: | ||
if (_bytesToRead > 0) { | ||
if (receive()) { | ||
_replyState = okReply; | ||
_waitForReply = _okStr; | ||
} | ||
} else if (_bytesToReceive > 0) { | ||
_sendState = sendCiprecvdata; | ||
} else { | ||
_sendState = connected; | ||
} | ||
break; | ||
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case sendCipclose: | ||
_connectState = IPCommDevice::intermediate; | ||
_waitForReply = _okStr; | ||
_sendState = finalizeDisconnect; | ||
sendCommand("AT+CIPCLOSE"); | ||
break; | ||
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case finalizeDisconnect: | ||
_stateBooleans &= ~IP_CONNECTED; | ||
_connectState = IPCommDevice::notConnected; | ||
_sendState = notConnected; | ||
break; | ||
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default: | ||
break; | ||
} | ||
} |
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