MCUGearBase.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 #include "mbed.h"
00024 #include "MCUGearBase.h"
00025 
00026 #ifdef LPC1768_mbed
00027 I2C fpga_i2c(p28, p27);
00028 #endif
00029 
00030 #ifdef FS_KL25Z
00031 I2C fpga_i2c(PTE0, PTE1);
00032 #endif
00033 
00034 
00035 
00036 
00037 #ifdef DEBUG
00038 Serial fpga_pc(USBTX, USBRX); // tx, rx
00039 #endif
00040 
00041 void fpga_write(int dev_adr,unsigned char adr, unsigned char data) {
00042   char cmd[2];
00043   cmd[0] = adr;
00044   cmd[1] = data;
00045   fpga_i2c.frequency (FPGA_I2C_CLOCK);
00046   fpga_i2c.write(dev_adr, cmd, 2);
00047   //wait(0.01);
00048   
00049 #ifdef DEBUG
00050   fpga_pc.printf("fpga write adr:%x data:%x\n", adr,data);
00051 #endif
00052 
00053 }
00054 
00055 unsigned char fpga_read(int dev_adr,unsigned char adr) {
00056   char cmd[2];
00057   cmd[0] = adr;
00058   fpga_i2c.write(dev_adr, cmd, 1);
00059   //wait(0.01);
00060   fpga_i2c.read(dev_adr, cmd, 1);
00061   //wait(0.01);
00062   //pc.printf("fpga read adr:%x data:%x\n", adr,cmd[0]);
00063   return cmd[0];
00064 }
00065 
00066 void initBase(void){
00067 
00068 #ifdef DEBUG
00069     fpga_pc.baud(BaudRate);
00070 #endif
00071 
00072     // FPGA reg clear
00073      for (int i=0;i<20;i++)
00074        fpga_write(FPGA_I2C_ADR,0x80+i,0);
00075      
00076     // read FPGA registers
00077 
00078 #ifdef DEBUG
00079     fpga_pc.printf("I2C test\n");
00080 #endif
00081     fpga_read(FPGA_I2C_ADR,FPGA_SYSINFO_0);
00082     fpga_read(FPGA_I2C_ADR,FPGA_SYSINFO_0+1);
00083     fpga_read(FPGA_I2C_ADR,FPGA_SYSINFO_0+2);
00084     fpga_read(FPGA_I2C_ADR,FPGA_SYSINFO_0+3);
00085     // FPGA enable
00086     fpga_write(FPGA_I2C_ADR,FPGA_ENABLE,1);
00087     
00088 }
00089 
00090 
00091 void I2Cwrite(char addr, char data){
00092 
00093     char cmd[1];
00094     cmd[0] = data;
00095     fpga_i2c.write(addr, cmd, 1);
00096     //wait(0.01);
00097     
00098 }
00099 
00100 int detect_module(char addr) {
00101   int pnum=0xff;
00102   //1pin GND
00103   I2Cwrite(addr,0x7f);    //0111 1111
00104   //wait(0.1);
00105   pnum =fpga_read(FPGA_I2C_ADR,FPGA_DETECT);
00106   wait(1);
00107 #ifdef DEBUG
00108   fpga_pc.printf("detected. port %d \n",pnum);
00109 #endif
00110   I2Cwrite(addr,0xff);    //1111 1111
00111   //wait(0.1);
00112   return pnum;
00113 }
00114 
00115 
00116 
00117