SerialRPCInterface.cpp

00001  /**
00002 * @section LICENSE
00003 *Copyright (c) 2010 ARM Ltd.
00004 * 
00005 *Permission is hereby granted, free of charge, to any person obtaining a copy
00006 *of this software and associated documentation files (the "Software"), to deal
00007 *in the Software without restriction, including without limitation the rights
00008 *to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00009 *copies of the Software, and to permit persons to whom the Software is
00010 *furnished to do so, subject to the following conditions:
00011 * 
00012 *The above copyright notice and this permission notice shall be included in
00013 *all copies or substantial portions of the Software.
00014 * 
00015 *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00016 *IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00017 *FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00018 *AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00019 *LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00020 *OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00021 *THE SOFTWARE.
00022 *
00023 * 
00024 * @section DESCRIPTION
00025 *
00026 *This class sets up RPC communication. This allows objects on mbed to be controlled. Objects can be created or existing objects can be used
00027 */
00028 #include "SerialRPCInterface.h"
00029 
00030 using namespace mbed;
00031 
00032 //Requires multiple contstructors for each type, serial to set different pin numbers, TCP for port.
00033 SerialRPCInterface::SerialRPCInterface(PinName tx, PinName rx, int baud):pc(tx, rx), _thread(SerialRPCInterface::_MsgProcessStarter, this, osPriorityNormal, 1024) {
00034     _RegClasses();
00035     _enabled  = true;
00036     _command_ptr = _command;
00037      pc.attach(this, &SerialRPCInterface::_RPCSerial, Serial::RxIrq);
00038      if(baud != 9600)pc.baud(baud);
00039 }
00040 
00041 void SerialRPCInterface::_RegClasses(void){
00042     //Register classes with base 
00043     //RPC::add_rpc_class<RpcAnalogIn>();
00044     RPC::add_rpc_class<RpcDigitalIn>();
00045     RPC::add_rpc_class<RpcDigitalOut>();
00046     RPC::add_rpc_class<RpcDigitalInOut>();
00047     RPC::add_rpc_class<RpcPwmOut>();
00048     RPC::add_rpc_class<RpcTimer>();
00049     //RPC::add_rpc_class<RpcBusOut>();
00050     //RPC::add_rpc_class<RpcBusIn>();
00051     //RPC::add_rpc_class<RpcBusInOut>();
00052     RPC::add_rpc_class<RpcSerial>();
00053     RPC::add_rpc_class<RpcSPI>();
00054     //RPC::add_rpc_class<RpcI2C>();
00055     
00056     //AnalogOut not avaliable on mbed LPC11U24 so only compile for other devices
00057     #if !defined(TARGET_LPC11U24) 
00058     //RPC::add_rpc_class<RpcAnalogOut>();
00059     #endif
00060 }
00061 
00062 void SerialRPCInterface::Disable(void){
00063      _enabled = false;
00064  }
00065 void SerialRPCInterface::Enable(void){
00066     _enabled = true;
00067 }
00068 void SerialRPCInterface::_MsgProcessStarter(const void *args){
00069     SerialRPCInterface *instance = (SerialRPCInterface*)args;
00070     while(1){
00071         instance->_MsgProcess();
00072     }
00073 }
00074 void SerialRPCInterface::_MsgProcess(void) {
00075     osEvent evt = _commandMail.get();
00076     if(evt.status == osEventMail){
00077         mail_t *mail = (mail_t*)evt.value.p;
00078         if(_enabled == true){
00079             RPC::call(_command, _response);
00080             pc.printf("%s\n", _response);
00081         }
00082         _commandMail.free(mail);
00083     }
00084 }
00085 
00086 void SerialRPCInterface::_RPCSerial() {
00087     _RPCflag = true;
00088     if(_enabled == true){
00089         char c = pc.getc();
00090         if(c == 13){
00091             *_command_ptr = '\0';
00092             mail_t *mail = _commandMail.alloc();
00093             strcpy(mail->command, _command);
00094             _commandMail.put(mail);
00095             _command_ptr = _command;
00096         }else if(_command_ptr - _command < 256){
00097             *_command_ptr = c;
00098             _command_ptr++;
00099         }
00100     }
00101     _RPCflag = false;
00102 }