MCUGearA.cpp

00001 /* MCU Gear Library, only for testing MCUGear without any circuit you connected.
00002  * Copyright (c) 2013, NestEgg Inc., http://www.mcugear.com/
00003  *
00004  * Permission is hereby granted, free of charge, to any person obtaining a copy
00005  * of this software and associated documentation files (the "Software"), to deal
00006  * in the Software without restriction, including without limitation the rights
00007  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00008  * copies of the Software, and to permit persons to whom the Software is
00009  * furnished to do so, subject to the following conditions:
00010  *
00011  * The above copyright notice and this permission notice shall be included in
00012  * all copies or substantial portions of the Software.
00013  *
00014  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00015  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00016  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00017  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00018  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00019  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00020  * THE SOFTWARE.
00021  */
00022 
00023 
00024 #include "mbed.h"
00025 #include "MCUGearA.h"
00026 #include "MCUGearBaseA.h"
00027 
00028 MCUGear::MCUGear(PinName scl, PinName sda, char addr)
00029      : _i2c(scl, sda) {
00030     _i2c.frequency(FPGA_I2C_CLOCK);
00031     _addr = addr;   //save address
00032     write(0xff);    //close Module gate
00033     _counter = 0;
00034 }
00035 
00036 void MCUGear::disconnectModule(void){
00037     write(0xff);    //close module gate
00038     deleteBank(0);
00039 }
00040 
00041 void MCUGear::connectModuleA(void){
00042     int i = 0;
00043     
00044     //make circuit
00045     if(_counter!=0){
00046         
00047         startReg(0);
00048         
00049         for(i = 0; i < _counter; ++i){
00050           fpga_write(_mcuIO[i], _moduleIO[i]);
00051         }
00052         
00053         endReg();
00054         
00055         changeBank(0);
00056     }
00057     
00058     write(0xf8);    //1111 1000
00059 }
00060 
00061 void MCUGear::fpga_write(unsigned char adr, unsigned char data) {
00062   char cmd[2];
00063   cmd[0] = adr;
00064   cmd[1] = data;
00065   _i2c.write(FPGA_I2C_ADR, cmd, 2);
00066 }
00067 
00068 void MCUGear::startReg(char bank){
00069     _bank = bank;
00070     fpga_write(0x0c,_bank); //End regist
00071 }
00072 
00073 uint8_t MCUGear::setWireA(uint8_t mcuIO, uint8_t direction, uint8_t moduleIO){
00074     
00075     uint8_t location = ( _pnum + moduleIO );
00076     
00077     if(moduleIO >= numMaxModuleIO){
00078         return 255; //error
00079     }
00080     
00081     if(location >= numBaseboardIO){
00082         location = location - numBaseboardIO;
00083     }
00084     
00085     //fpga_write(mcuIO, (IO_REG_EN | (direction | (location))));
00086     saveWire(mcuIO, (IO_REG_EN | (direction | (location))));
00087     
00088     return location;
00089 }
00090 
00091 void MCUGear::saveWire(uint8_t mcuIO, uint8_t moduleIO){
00092         _mcuIO[_counter] = mcuIO;
00093         _moduleIO[_counter] = moduleIO;
00094         ++_counter;
00095 }
00096 
00097 void MCUGear::endReg(void){
00098     fpga_write(0x10,_bank);//init regist///////
00099 }
00100 
00101 
00102 //send I2C signal function
00103 void MCUGear::write(uint8_t c){
00104 
00105     char cmd[1];
00106     cmd[0] = c;
00107     _i2c.write(_addr, cmd, 1);
00108     
00109 }
00110 
00111 ////detect module
00112 uint8_t MCUGear::detectModule(void) {
00113     
00114     write(0x7f);   //0111 1111  //1pin GND
00115     _pnum = fpga_read(FPGA_I2C_ADR,FPGA_DETECT);//save location
00116     write(0xff);    //1111 1111 //close
00117     
00118     _counter = 0;
00119     
00120     return _pnum;
00121 
00122 }
00123