LLAP Library for Ciseco wireless products.
Dependents: Ciseco_LLAP_Test Ciseco_SRF_Shield
Library for Ciseco wireless modules http://shop.ciseco.co.uk/rf-module-range/
Tested with Nucleo F401RE and http://shop.ciseco.co.uk/srf-shield-wireless-transciever-for-all-arduino-type-boards/
LLAPSerial.cpp
- Committer:
- SomeRandomBloke
- Date:
- 2014-04-16
- Revision:
- 7:51c8887d6822
- Parent:
- 6:0745fb4dbd8c
File content as of revision 7:51c8887d6822:
/** * LLAP Serial for use with Ciseco SRF/XRF wireless modules * * @author Andrew Lindsay * * @section DESCRIPTION * * Wireless modules available at http://shop.ciseco.co.uk/rf-module-range/ * Library developped with ST Micro Nucleo F401 and Ciseco SRF shield. * Sheild needs to be modified as Tx/Rx on pins 0 and 1 conflict with the USB debug port. * They need joining to Rx - PA_12, Tx - PA_11 on the outer row of pins. * See http://mbed.org/platforms/ST-Nucleo-F401RE/ for pinouts. * * This code is based on the Ciseco LLAPSerial library for Arduino at https://github.com/CisecoPlc/LLAPSerial but updated to * work as a mbed library * * Converted and updated by Andrew Lindsay @AndrewDLindsay April 2014 * * For the SRF sheild to work correctly, some mods are needed to the Nucleo board. SB13 and SB14 need to be removed, * SB62 and SB63 need to be bridged. This then removes the UART from the USB output. An alternative UART is then needed * for debug purposes. * * @section LICENSE * * The MIT License (MIT) * * Copyright (c) 2014 Andrew Lindsay (andrew [at] thiseldo [dot] co [dot] uk) * * 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. */ #include "mbed.h" #include "LLAPSerial.h" // Constructors to pass in Tx/Rx, enable pins and optional ID, default is -- as defined in LLAPSerial.h LLAPSerial::LLAPSerial(PinName txPin, PinName rxPin, PinName enableSRF, bool checkDevIDin, char *dID) : srf(txPin, rxPin), srfEnable( enableSRF ) { srf.baud(115200); bMsgReceived = false; setDeviceId(dID); cMessage[12]=0; // ensure terminated inPtr = cMessage; checkDevID = checkDevIDin; // Enable the SRF srfEnable = 1; // Attach the receive interrupt handler srf.attach( this,&LLAPSerial::SerialEvent ); } void LLAPSerial::processMessage() { if( checkDevID ) { if (cMessage[1] != deviceId[0]) return; if (cMessage[2] != deviceId[1]) return; } // now we have LLAP.cMessage[3] to LLAP.cMessage[11] as the actual message if (0 == strncmp(&cMessage[3],"HELLO----",9)) { srf.printf("%s",cMessage); // echo the message return; } else if (0 == strncmp(&cMessage[3],"CHDEVID",7)) { if (strchr("-#@?\\*ABCDEFGHIJKLMNOPQRSTUVWXYZ", cMessage[10]) != 0 && strchr("-#@?\\*ABCDEFGHIJKLMNOPQRSTUVWXYZ", cMessage[11]) != 0) { deviceId[0] = cMessage[10]; deviceId[1] = cMessage[11]; srf.printf( "%s", cMessage); // echo the message } } else { strncpy(sMessage, &cMessage[0], 12); // let the main program deal with it bMsgReceived = true; } } void LLAPSerial::SerialEvent( void ) { if (bMsgReceived) return; // get out if previous message not yet processed if (srf.readable() ) { // get the new char: char inChar = (char)srf.getc(); if (inChar == 'a') { // Start of a new message inPtr = cMessage; } *inPtr++ = inChar; if( inPtr >= &cMessage[12]) { // Message received, terminate, process and reset pointer *inPtr = '\0'; processMessage(); inPtr = cMessage; } } } /* void LLAPSerial::SerialEvent( void ) { if (bMsgReceived) return; // get out if previous message not yet processed if (srf.readable() ) { // get the new byte: char inChar = (char)srf.getc(); if (inChar == 'a') { cMessage[0] = inChar; for (int i = 1; i<12; i++) { inChar = (char)srf.getc(); if( inChar == 'a' ) return; // out of sync so abort and pick it up next time round cMessage[i] = inChar; } cMessage[12]=0; processMessage(); } else srf.getc(); // throw away the character } } */ void LLAPSerial::sendMessage(char *sToSend) { cMessage[0] = 'a'; cMessage[1] = deviceId[0]; cMessage[2] = deviceId[1]; for (int i = 0; i<9; i++) { if (i < strlen(sToSend) ) cMessage[i+3] = sToSend[i]; else cMessage[i+3] = '-'; } srf.printf("%s",cMessage); } void LLAPSerial::sendMessage(char* sToSend, char* valueToSend) { cMessage[0] = 'a'; cMessage[1] = deviceId[0]; cMessage[2] = deviceId[1]; for (int i = 0; i<9; i++) { if (i < strlen(sToSend)) cMessage[i+3] = sToSend[i]; else if (i < strlen(sToSend) + strlen(valueToSend)) cMessage[i+3] = valueToSend[i - strlen(sToSend)]; else cMessage[i+3] = '-'; } srf.printf("%s", cMessage); } void LLAPSerial::sendInt(char *sToSend, int value) { char cValue[7]; // long enough for -32767 and the trailing zero sprintf( cValue,"%d", value ); int cValuePtr = 0; cMessage[0] = 'a'; cMessage[1] = deviceId[0]; cMessage[2] = deviceId[1]; for (int i = 0; i<9; i++) { if (i < strlen(sToSend)) cMessage[i+3] = sToSend[i]; else if (cValuePtr < 7 && cValue[cValuePtr] !=0) cMessage[i+3] = cValue[cValuePtr++]; else cMessage[i+3] = '-'; } srf.printf("%s",cMessage); } void LLAPSerial::sendIntWithDP(char *sToSend, int value, int decimalPlaces) { char cValue[8]; // long enough for -3276.7 and the trailing zero int cValuePtr=0; //itoa(value, cValue,10); sprintf( cValue,"%d", value ); char* cp = &cValue[strlen(cValue)]; *(cp+1) = 0; // new terminator while (decimalPlaces-- && --cp ) { *(cp+1) = *cp; } *cp = '.'; cMessage[0] = 'a'; cMessage[1] = deviceId[0]; cMessage[2] = deviceId[1]; for (int i = 0; i<9; i++) { if (i < strlen(sToSend)) cMessage[i+3] = sToSend[i]; else if (cValuePtr < 8 && cValue[cValuePtr] !=0) cMessage[i+3] = cValue[cValuePtr++]; else cMessage[i+3] = '-'; } srf.printf("%s", cMessage); } void LLAPSerial::setDeviceId(char* cId) { deviceId[0] = cId[0]; deviceId[1] = cId[1]; }