Seeker of Truth , / Mbed 2 deprecated CDMS_icecream

cdms i2c only integration

Dependencies:   mbed-rtos mbed

Fork of CDMS_icecream by sakthi priya amirtharaj

main.cpp@2:c75bb488d17c, 2014-12-20 (annotated)

Committer:
sakthipriya
Date:
Sat Dec 20 06:23:00 2014 +0000
Revision:
2:c75bb488d17c
Parent:
1:24c54d213671
Child:
3:6c1ed31073f0
decode hk data

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sakthipriya 0:252ce694a71e 1 #include "mbed.h"
sakthipriya 0:252ce694a71e 2 #include "rtos.h"
sakthipriya 0:252ce694a71e 3
sakthipriya 0:252ce694a71e 4 const int addr = 0x20; //slave address
sakthipriya 0:252ce694a71e 5 I2C master (D14,D15); //configure pins p27,p28 as I2C master
sakthipriya 0:252ce694a71e 6 Serial pc (USBTX,USBRX);
sakthipriya 0:252ce694a71e 7 DigitalOut interrupt(D9);
sakthipriya 0:252ce694a71e 8 InterruptIn data_ready(D10);
sakthipriya 0:252ce694a71e 9
sakthipriya 0:252ce694a71e 10 int reset;
sakthipriya 0:252ce694a71e 11
sakthipriya 0:252ce694a71e 12 typedef struct
sakthipriya 0:252ce694a71e 13 {
sakthipriya 0:252ce694a71e 14 char data; // To avoid dynamic memory allocation
sakthipriya 0:252ce694a71e 15 int length;
sakthipriya 0:252ce694a71e 16 }i2c_data;
sakthipriya 0:252ce694a71e 17
sakthipriya 0:252ce694a71e 18 //Mail<i2c_data,16> i2c_data_receive;
sakthipriya 0:252ce694a71e 19 Mail<i2c_data,16> i2c_data_send;
sakthipriya 0:252ce694a71e 20
sakthipriya 0:252ce694a71e 21 Thread * ptr_t_i2c;
sakthipriya 0:252ce694a71e 22 void FUNC_I2C_MASTER_FSLAVE(char * data,int length)
sakthipriya 0:252ce694a71e 23 {
sakthipriya 0:252ce694a71e 24 //printf("press backspace for master to start \n\r");
sakthipriya 0:252ce694a71e 25 //while(1){
sakthipriya 0:252ce694a71e 26 //interrupt = 0;
sakthipriya 0:252ce694a71e 27 // if(pc.getc()=='z'){
sakthipriya 1:24c54d213671 28 //wait(0.5);
sakthipriya 0:252ce694a71e 29 interrupt = 1;
sakthipriya 0:252ce694a71e 30 printf("\nMaster executed\n");
sakthipriya 0:252ce694a71e 31
sakthipriya 0:252ce694a71e 32
sakthipriya 0:252ce694a71e 33 bool ack0 =true;
sakthipriya 0:252ce694a71e 34 bool loopvariable0 =true;
sakthipriya 0:252ce694a71e 35 //char *data = new char;
sakthipriya 0:252ce694a71e 36 //*data = 'b';
sakthipriya 0:252ce694a71e 37
sakthipriya 0:252ce694a71e 38
sakthipriya 0:252ce694a71e 39
sakthipriya 0:252ce694a71e 40 master.frequency(100000); //set clock frequency
sakthipriya 0:252ce694a71e 41 //master.start();
sakthipriya 0:252ce694a71e 42 /*while(write2slave)
sakthipriya 0:252ce694a71e 43 { *writedata = pc.getc();
sakthipriya 0:252ce694a71e 44 wait(0.5);
sakthipriya 0:252ce694a71e 45
sakthipriya 0:252ce694a71e 46 printf("master clk freq setup and addressing slave\n\r");
sakthipriya 0:252ce694a71e 47 master.start(); //initiating the data transfer
sakthipriya 0:252ce694a71e 48 master_status_write = (bool) master.write(addr|0x00,writedata,1);
sakthipriya 0:252ce694a71e 49 if(master_status_write==0)
sakthipriya 0:252ce694a71e 50 {
sakthipriya 0:252ce694a71e 51 printf("master has written %c to slave\n\r",*writedata);
sakthipriya 0:252ce694a71e 52 write2slave=false;
sakthipriya 0:252ce694a71e 53 }
sakthipriya 0:252ce694a71e 54
sakthipriya 0:252ce694a71e 55
sakthipriya 0:252ce694a71e 56 }*/
sakthipriya 0:252ce694a71e 57
sakthipriya 1:24c54d213671 58 while(ack0 && data_ready ==1 )
sakthipriya 0:252ce694a71e 59 {
sakthipriya 0:252ce694a71e 60 //printf("2 master clk freq setup and addressing slave\n\r");
sakthipriya 0:252ce694a71e 61
sakthipriya 0:252ce694a71e 62 master.start(); //initiating the data transfer
sakthipriya 0:252ce694a71e 63 ack0 = master.read(addr,data,length);
sakthipriya 0:252ce694a71e 64 }
sakthipriya 0:252ce694a71e 65 if(!ack0)
sakthipriya 0:252ce694a71e 66 {
sakthipriya 0:252ce694a71e 67 printf("\n master has read %s from slave\n\r",data);
sakthipriya 0:252ce694a71e 68 loopvariable0=false;
sakthipriya 0:252ce694a71e 69 }
sakthipriya 0:252ce694a71e 70 //master.stop();
sakthipriya 0:252ce694a71e 71
sakthipriya 0:252ce694a71e 72 //printf("done\n\r");
sakthipriya 0:252ce694a71e 73 //delete data;
sakthipriya 0:252ce694a71e 74 interrupt=0;
sakthipriya 1:24c54d213671 75 printf("\n blahblah\n\r");
sakthipriya 0:252ce694a71e 76 }
sakthipriya 2:c75bb488d17c 77
sakthipriya 2:c75bb488d17c 78 typedef struct {
sakthipriya 2:c75bb488d17c 79 char Voltage[9];
sakthipriya 2:c75bb488d17c 80 char Current[5];
sakthipriya 2:c75bb488d17c 81 char Temperature[2];
sakthipriya 2:c75bb488d17c 82 char PanelTemperature[3];//read by the 4 thermistors on solar panels
sakthipriya 2:c75bb488d17c 83 char BatteryTemperature; //to be populated
sakthipriya 2:c75bb488d17c 84 char faultpoll; //polled faults
sakthipriya 2:c75bb488d17c 85 char faultir; //interrupted faults
sakthipriya 2:c75bb488d17c 86 char power_mode; //power modes
sakthipriya 2:c75bb488d17c 87 char AngularSpeed[3];
sakthipriya 2:c75bb488d17c 88 char Bnewvalue[3];
sakthipriya 2:c75bb488d17c 89
sakthipriya 2:c75bb488d17c 90 //float magnetometer,gyro=>to be addes
sakthipriya 2:c75bb488d17c 91 } hk_data;
sakthipriya 2:c75bb488d17c 92 hk_data decode_data;
sakthipriya 2:c75bb488d17c 93
sakthipriya 2:c75bb488d17c 94 void TC_DECODE(char *data_hk) //getting the structure back from hk data sent by bae
sakthipriya 2:c75bb488d17c 95 {
sakthipriya 2:c75bb488d17c 96 for(int i=0;i<=7;i++)
sakthipriya 2:c75bb488d17c 97 {
sakthipriya 2:c75bb488d17c 98 decode_data.Voltage[i] = data_hk[i];
sakthipriya 2:c75bb488d17c 99 decode_data.Voltage[8] = '\0';
sakthipriya 2:c75bb488d17c 100 }
sakthipriya 2:c75bb488d17c 101 for(int i=0;i<=3;i++)
sakthipriya 2:c75bb488d17c 102 {
sakthipriya 2:c75bb488d17c 103 decode_data.Current[i] = data_hk[8+i];
sakthipriya 2:c75bb488d17c 104 decode_data.Current[4] = '\0';
sakthipriya 2:c75bb488d17c 105 }
sakthipriya 2:c75bb488d17c 106 decode_data.Temperature[0] = data_hk[12];
sakthipriya 2:c75bb488d17c 107 decode_data.Temperature[1] = '\0';
sakthipriya 2:c75bb488d17c 108 for(int i=0;i<=1;i++)
sakthipriya 2:c75bb488d17c 109 {
sakthipriya 2:c75bb488d17c 110 decode_data.PanelTemperature[i] = data_hk[13+i];
sakthipriya 2:c75bb488d17c 111 decode_data.PanelTemperature[2] = '\0';
sakthipriya 2:c75bb488d17c 112 }
sakthipriya 2:c75bb488d17c 113 decode_data.BatteryTemperature = data_hk[15];
sakthipriya 2:c75bb488d17c 114 decode_data.faultpoll = data_hk[16];
sakthipriya 2:c75bb488d17c 115 decode_data.faultir = data_hk[17];
sakthipriya 2:c75bb488d17c 116 decode_data.power_mode = data_hk[18];
sakthipriya 2:c75bb488d17c 117 for(int i=0;i<=1;i++)
sakthipriya 2:c75bb488d17c 118 {
sakthipriya 2:c75bb488d17c 119 decode_data.AngularSpeed[i] = data_hk[19+i];
sakthipriya 2:c75bb488d17c 120 decode_data.AngularSpeed[2] = '\0';
sakthipriya 2:c75bb488d17c 121 }
sakthipriya 2:c75bb488d17c 122 for(int i=0;i<=1;i++)
sakthipriya 2:c75bb488d17c 123 {
sakthipriya 2:c75bb488d17c 124 decode_data.Bnewvalue[i] = data_hk[21+i];
sakthipriya 2:c75bb488d17c 125 decode_data.Bnewvalue[2] = '\0';
sakthipriya 2:c75bb488d17c 126 }
sakthipriya 2:c75bb488d17c 127 printf("\n voltage %s\n\r",decode_data.Voltage);
sakthipriya 2:c75bb488d17c 128 printf("\n current %s\n\r",decode_data.Current);
sakthipriya 2:c75bb488d17c 129 printf("\n faultpoll %c\n\r",decode_data.faultpoll);
sakthipriya 2:c75bb488d17c 130 }
sakthipriya 2:c75bb488d17c 131
sakthipriya 0:252ce694a71e 132
sakthipriya 0:252ce694a71e 133 void T_I2C_MASTER_FSLAVE(void const *args)
sakthipriya 0:252ce694a71e 134 {
sakthipriya 0:252ce694a71e 135 char data_receive[25];
sakthipriya 0:252ce694a71e 136 while(1)
sakthipriya 0:252ce694a71e 137 {
sakthipriya 0:252ce694a71e 138 Thread::signal_wait(0x1);
sakthipriya 1:24c54d213671 139
sakthipriya 1:24c54d213671 140
sakthipriya 0:252ce694a71e 141 FUNC_I2C_MASTER_FSLAVE(data_receive,25);
sakthipriya 0:252ce694a71e 142 /*i2c_data * i2c_data_r = i2c_data_receive.alloc();
sakthipriya 0:252ce694a71e 143 strcpy(i2c_data_r->data , data_receive);
sakthipriya 0:252ce694a71e 144 i2c_data_r->length = 25;
sakthipriya 0:252ce694a71e 145 i2c_data_receive.put(i2c_data_r);*/
sakthipriya 0:252ce694a71e 146 printf("\n Data received from slave is %s\n\r",data_receive);
sakthipriya 2:c75bb488d17c 147 TC_DECODE(data_receive);
sakthipriya 0:252ce694a71e 148 }
sakthipriya 0:252ce694a71e 149 }
sakthipriya 0:252ce694a71e 150
sakthipriya 0:252ce694a71e 151 void FUNC_INT()
sakthipriya 0:252ce694a71e 152 {
sakthipriya 0:252ce694a71e 153
sakthipriya 0:252ce694a71e 154 ptr_t_i2c->signal_set(0x1);
sakthipriya 0:252ce694a71e 155
sakthipriya 0:252ce694a71e 156 }
sakthipriya 0:252ce694a71e 157
sakthipriya 0:252ce694a71e 158 char writedata;
sakthipriya 0:252ce694a71e 159 bool write2slave;
sakthipriya 0:252ce694a71e 160 bool master_status_write;
sakthipriya 0:252ce694a71e 161 void FUNC_MASTER_WRITE()
sakthipriya 0:252ce694a71e 162 { //wait(1);
sakthipriya 0:252ce694a71e 163 write2slave=true;
sakthipriya 0:252ce694a71e 164
sakthipriya 0:252ce694a71e 165
sakthipriya 0:252ce694a71e 166
sakthipriya 0:252ce694a71e 167 char data = pc.getc();
sakthipriya 0:252ce694a71e 168 interrupt = 1;
sakthipriya 0:252ce694a71e 169 i2c_data * i2c_data_s = i2c_data_send.alloc();
sakthipriya 0:252ce694a71e 170 i2c_data_s->data = data;
sakthipriya 0:252ce694a71e 171 i2c_data_s->length = 1;
sakthipriya 0:252ce694a71e 172 i2c_data_send.put(i2c_data_s);
sakthipriya 0:252ce694a71e 173 master_status_write = true;
sakthipriya 0:252ce694a71e 174
sakthipriya 0:252ce694a71e 175 // interrupt = 1;
sakthipriya 0:252ce694a71e 176
sakthipriya 0:252ce694a71e 177 osEvent evt = i2c_data_send.get();
sakthipriya 0:252ce694a71e 178 if (evt.status == osEventMail)
sakthipriya 0:252ce694a71e 179 {
sakthipriya 0:252ce694a71e 180 i2c_data *i2c_data_s = (i2c_data*)evt.value.p;
sakthipriya 0:252ce694a71e 181 writedata = i2c_data_s -> data;
sakthipriya 0:252ce694a71e 182 master.frequency(100000); //set clock frequency
sakthipriya 1:24c54d213671 183 while(write2slave && interrupt ==1 )
sakthipriya 0:252ce694a71e 184 {
sakthipriya 0:252ce694a71e 185 printf("master clk freq setup and addressing slave\n\r");
sakthipriya 0:252ce694a71e 186 master.start(); //initiating the data transfer
sakthipriya 0:252ce694a71e 187 master_status_write = (bool) master.write(addr|0x00,&writedata,1);
sakthipriya 0:252ce694a71e 188 if(master_status_write==0)
sakthipriya 0:252ce694a71e 189 {
sakthipriya 0:252ce694a71e 190 printf("master has written %c to slave\n\r",writedata);
sakthipriya 0:252ce694a71e 191 write2slave=false;
sakthipriya 0:252ce694a71e 192 }
sakthipriya 0:252ce694a71e 193 i2c_data_send.free(i2c_data_s);
sakthipriya 0:252ce694a71e 194 }
sakthipriya 0:252ce694a71e 195 }
sakthipriya 0:252ce694a71e 196 interrupt = 0;
sakthipriya 0:252ce694a71e 197 }
sakthipriya 0:252ce694a71e 198
sakthipriya 0:252ce694a71e 199
sakthipriya 0:252ce694a71e 200
sakthipriya 0:252ce694a71e 201 int main()
sakthipriya 0:252ce694a71e 202 {
sakthipriya 1:24c54d213671 203 interrupt=0;
sakthipriya 0:252ce694a71e 204 ptr_t_i2c = new Thread(T_I2C_MASTER_FSLAVE);
sakthipriya 0:252ce694a71e 205 data_ready.rise(&FUNC_INT);
sakthipriya 0:252ce694a71e 206 printf("\nstarted master\n");
sakthipriya 0:252ce694a71e 207 while(1)
sakthipriya 0:252ce694a71e 208 { //Thread::wait(9000);
sakthipriya 0:252ce694a71e 209 //interrupt = 1;
sakthipriya 0:252ce694a71e 210
sakthipriya 0:252ce694a71e 211 FUNC_MASTER_WRITE();
sakthipriya 0:252ce694a71e 212 //interrupt = 0;
sakthipriya 0:252ce694a71e 213 ;
sakthipriya 0:252ce694a71e 214 }
sakthipriya 0:252ce694a71e 215 }