sakthi priya amirtharaj / Mbed 2 deprecated CDMS_icecream

i2c while removed working

Dependencies:   mbed-rtos mbed

Fork of CDMS_tc2 by sakthi priya amirtharaj

main.cpp@3:6c1ed31073f0, 2015-01-31 (annotated)

Committer:
sakthipriya
Date:
Sat Jan 31 14:14:01 2015 +0000
Revision:
3:6c1ed31073f0
Parent:
2:c75bb488d17c 
i2c while removed working

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 3:6c1ed31073f0 11 Timer t;
sakthipriya 3:6c1ed31073f0 12 Timer t1;
sakthipriya 3:6c1ed31073f0 13 Timer t2;
sakthipriya 3:6c1ed31073f0 14 Timer t3;
sakthipriya 0:252ce694a71e 15
sakthipriya 0:252ce694a71e 16 typedef struct
sakthipriya 0:252ce694a71e 17 {
sakthipriya 0:252ce694a71e 18 char data; // To avoid dynamic memory allocation
sakthipriya 0:252ce694a71e 19 int length;
sakthipriya 0:252ce694a71e 20 }i2c_data;
sakthipriya 0:252ce694a71e 21
sakthipriya 0:252ce694a71e 22 //Mail<i2c_data,16> i2c_data_receive;
sakthipriya 0:252ce694a71e 23 Mail<i2c_data,16> i2c_data_send;
sakthipriya 0:252ce694a71e 24
sakthipriya 0:252ce694a71e 25 Thread * ptr_t_i2c;
sakthipriya 0:252ce694a71e 26 void FUNC_I2C_MASTER_FSLAVE(char * data,int length)
sakthipriya 0:252ce694a71e 27 {
sakthipriya 3:6c1ed31073f0 28
sakthipriya 0:252ce694a71e 29
sakthipriya 0:252ce694a71e 30 bool ack0 =true;
sakthipriya 0:252ce694a71e 31
sakthipriya 3:6c1ed31073f0 32 interrupt = 1;
sakthipriya 3:6c1ed31073f0 33 t1.start();
sakthipriya 3:6c1ed31073f0 34 //wait_ms(20);
sakthipriya 3:6c1ed31073f0 35 ack0 = master.read(addr|1,data,length);
sakthipriya 3:6c1ed31073f0 36 t1.stop();
sakthipriya 3:6c1ed31073f0 37
sakthipriya 3:6c1ed31073f0 38
sakthipriya 0:252ce694a71e 39 if(!ack0)
sakthipriya 0:252ce694a71e 40 {
sakthipriya 0:252ce694a71e 41 printf("\n master has read %s from slave\n\r",data);
sakthipriya 3:6c1ed31073f0 42
sakthipriya 0:252ce694a71e 43 }
sakthipriya 0:252ce694a71e 44 //master.stop();
sakthipriya 3:6c1ed31073f0 45 printf("\n%d\n\r",t1.read_us());
sakthipriya 3:6c1ed31073f0 46 t1.reset();
sakthipriya 0:252ce694a71e 47
sakthipriya 0:252ce694a71e 48 interrupt=0;
sakthipriya 3:6c1ed31073f0 49
sakthipriya 0:252ce694a71e 50 }
sakthipriya 2:c75bb488d17c 51
sakthipriya 2:c75bb488d17c 52 typedef struct {
sakthipriya 2:c75bb488d17c 53 char Voltage[9];
sakthipriya 2:c75bb488d17c 54 char Current[5];
sakthipriya 2:c75bb488d17c 55 char Temperature[2];
sakthipriya 2:c75bb488d17c 56 char PanelTemperature[3];//read by the 4 thermistors on solar panels
sakthipriya 2:c75bb488d17c 57 char BatteryTemperature; //to be populated
sakthipriya 2:c75bb488d17c 58 char faultpoll; //polled faults
sakthipriya 2:c75bb488d17c 59 char faultir; //interrupted faults
sakthipriya 2:c75bb488d17c 60 char power_mode; //power modes
sakthipriya 2:c75bb488d17c 61 char AngularSpeed[3];
sakthipriya 2:c75bb488d17c 62 char Bnewvalue[3];
sakthipriya 2:c75bb488d17c 63
sakthipriya 2:c75bb488d17c 64 //float magnetometer,gyro=>to be addes
sakthipriya 2:c75bb488d17c 65 } hk_data;
sakthipriya 2:c75bb488d17c 66 hk_data decode_data;
sakthipriya 2:c75bb488d17c 67
sakthipriya 3:6c1ed31073f0 68 /*void TC_DECODE(char *data_hk) //getting the structure back from hk data sent by bae
sakthipriya 2:c75bb488d17c 69 {
sakthipriya 2:c75bb488d17c 70 for(int i=0;i<=7;i++)
sakthipriya 2:c75bb488d17c 71 {
sakthipriya 2:c75bb488d17c 72 decode_data.Voltage[i] = data_hk[i];
sakthipriya 2:c75bb488d17c 73 decode_data.Voltage[8] = '\0';
sakthipriya 2:c75bb488d17c 74 }
sakthipriya 2:c75bb488d17c 75 for(int i=0;i<=3;i++)
sakthipriya 2:c75bb488d17c 76 {
sakthipriya 2:c75bb488d17c 77 decode_data.Current[i] = data_hk[8+i];
sakthipriya 2:c75bb488d17c 78 decode_data.Current[4] = '\0';
sakthipriya 2:c75bb488d17c 79 }
sakthipriya 2:c75bb488d17c 80 decode_data.Temperature[0] = data_hk[12];
sakthipriya 2:c75bb488d17c 81 decode_data.Temperature[1] = '\0';
sakthipriya 2:c75bb488d17c 82 for(int i=0;i<=1;i++)
sakthipriya 2:c75bb488d17c 83 {
sakthipriya 2:c75bb488d17c 84 decode_data.PanelTemperature[i] = data_hk[13+i];
sakthipriya 2:c75bb488d17c 85 decode_data.PanelTemperature[2] = '\0';
sakthipriya 2:c75bb488d17c 86 }
sakthipriya 2:c75bb488d17c 87 decode_data.BatteryTemperature = data_hk[15];
sakthipriya 2:c75bb488d17c 88 decode_data.faultpoll = data_hk[16];
sakthipriya 2:c75bb488d17c 89 decode_data.faultir = data_hk[17];
sakthipriya 2:c75bb488d17c 90 decode_data.power_mode = data_hk[18];
sakthipriya 2:c75bb488d17c 91 for(int i=0;i<=1;i++)
sakthipriya 2:c75bb488d17c 92 {
sakthipriya 2:c75bb488d17c 93 decode_data.AngularSpeed[i] = data_hk[19+i];
sakthipriya 2:c75bb488d17c 94 decode_data.AngularSpeed[2] = '\0';
sakthipriya 2:c75bb488d17c 95 }
sakthipriya 2:c75bb488d17c 96 for(int i=0;i<=1;i++)
sakthipriya 2:c75bb488d17c 97 {
sakthipriya 2:c75bb488d17c 98 decode_data.Bnewvalue[i] = data_hk[21+i];
sakthipriya 2:c75bb488d17c 99 decode_data.Bnewvalue[2] = '\0';
sakthipriya 2:c75bb488d17c 100 }
sakthipriya 2:c75bb488d17c 101 printf("\n voltage %s\n\r",decode_data.Voltage);
sakthipriya 2:c75bb488d17c 102 printf("\n current %s\n\r",decode_data.Current);
sakthipriya 2:c75bb488d17c 103 printf("\n faultpoll %c\n\r",decode_data.faultpoll);
sakthipriya 3:6c1ed31073f0 104 }*/
sakthipriya 2:c75bb488d17c 105
sakthipriya 0:252ce694a71e 106
sakthipriya 0:252ce694a71e 107 void T_I2C_MASTER_FSLAVE(void const *args)
sakthipriya 0:252ce694a71e 108 {
sakthipriya 0:252ce694a71e 109 char data_receive[25];
sakthipriya 0:252ce694a71e 110 while(1)
sakthipriya 0:252ce694a71e 111 {
sakthipriya 0:252ce694a71e 112 Thread::signal_wait(0x1);
sakthipriya 1:24c54d213671 113
sakthipriya 1:24c54d213671 114
sakthipriya 0:252ce694a71e 115 FUNC_I2C_MASTER_FSLAVE(data_receive,25);
sakthipriya 0:252ce694a71e 116 /*i2c_data * i2c_data_r = i2c_data_receive.alloc();
sakthipriya 0:252ce694a71e 117 strcpy(i2c_data_r->data , data_receive);
sakthipriya 0:252ce694a71e 118 i2c_data_r->length = 25;
sakthipriya 0:252ce694a71e 119 i2c_data_receive.put(i2c_data_r);*/
sakthipriya 0:252ce694a71e 120 printf("\n Data received from slave is %s\n\r",data_receive);
sakthipriya 3:6c1ed31073f0 121 //TC_DECODE(data_receive);
sakthipriya 0:252ce694a71e 122 }
sakthipriya 0:252ce694a71e 123 }
sakthipriya 0:252ce694a71e 124
sakthipriya 0:252ce694a71e 125 void FUNC_INT()
sakthipriya 0:252ce694a71e 126 {
sakthipriya 0:252ce694a71e 127
sakthipriya 0:252ce694a71e 128 ptr_t_i2c->signal_set(0x1);
sakthipriya 0:252ce694a71e 129
sakthipriya 0:252ce694a71e 130 }
sakthipriya 0:252ce694a71e 131
sakthipriya 0:252ce694a71e 132 char writedata;
sakthipriya 0:252ce694a71e 133 bool write2slave;
sakthipriya 0:252ce694a71e 134 bool master_status_write;
sakthipriya 0:252ce694a71e 135 void FUNC_MASTER_WRITE()
sakthipriya 0:252ce694a71e 136 { //wait(1);
sakthipriya 0:252ce694a71e 137 write2slave=true;
sakthipriya 0:252ce694a71e 138
sakthipriya 0:252ce694a71e 139
sakthipriya 0:252ce694a71e 140
sakthipriya 0:252ce694a71e 141 char data = pc.getc();
sakthipriya 0:252ce694a71e 142 interrupt = 1;
sakthipriya 3:6c1ed31073f0 143 t.start();
sakthipriya 3:6c1ed31073f0 144 t3.start();
sakthipriya 3:6c1ed31073f0 145 wait_ms(20);
sakthipriya 0:252ce694a71e 146 i2c_data * i2c_data_s = i2c_data_send.alloc();
sakthipriya 0:252ce694a71e 147 i2c_data_s->data = data;
sakthipriya 0:252ce694a71e 148 i2c_data_s->length = 1;
sakthipriya 0:252ce694a71e 149 i2c_data_send.put(i2c_data_s);
sakthipriya 0:252ce694a71e 150 master_status_write = true;
sakthipriya 0:252ce694a71e 151
sakthipriya 0:252ce694a71e 152 // interrupt = 1;
sakthipriya 0:252ce694a71e 153
sakthipriya 0:252ce694a71e 154 osEvent evt = i2c_data_send.get();
sakthipriya 0:252ce694a71e 155 if (evt.status == osEventMail)
sakthipriya 0:252ce694a71e 156 {
sakthipriya 0:252ce694a71e 157 i2c_data *i2c_data_s = (i2c_data*)evt.value.p;
sakthipriya 0:252ce694a71e 158 writedata = i2c_data_s -> data;
sakthipriya 3:6c1ed31073f0 159 t.stop();
sakthipriya 3:6c1ed31073f0 160 //t3.start();
sakthipriya 0:252ce694a71e 161 master_status_write = (bool) master.write(addr|0x00,&writedata,1);
sakthipriya 3:6c1ed31073f0 162 t3.stop();
sakthipriya 0:252ce694a71e 163 if(master_status_write==0)
sakthipriya 0:252ce694a71e 164 {
sakthipriya 0:252ce694a71e 165 printf("master has written %c to slave\n\r",writedata);
sakthipriya 0:252ce694a71e 166 write2slave=false;
sakthipriya 0:252ce694a71e 167 }
sakthipriya 0:252ce694a71e 168 i2c_data_send.free(i2c_data_s);
sakthipriya 3:6c1ed31073f0 169 printf("\n%d\n",t.read_us());
sakthipriya 3:6c1ed31073f0 170 t.reset();
sakthipriya 3:6c1ed31073f0 171 printf("\n%d\n",t3.read_us());
sakthipriya 3:6c1ed31073f0 172 t3.reset();
sakthipriya 0:252ce694a71e 173 }
sakthipriya 3:6c1ed31073f0 174 interrupt = 0;
sakthipriya 0:252ce694a71e 175 }
sakthipriya 0:252ce694a71e 176
sakthipriya 0:252ce694a71e 177
sakthipriya 0:252ce694a71e 178
sakthipriya 0:252ce694a71e 179 int main()
sakthipriya 0:252ce694a71e 180 {
sakthipriya 1:24c54d213671 181 interrupt=0;
sakthipriya 0:252ce694a71e 182 ptr_t_i2c = new Thread(T_I2C_MASTER_FSLAVE);
sakthipriya 0:252ce694a71e 183 data_ready.rise(&FUNC_INT);
sakthipriya 0:252ce694a71e 184 printf("\nstarted master\n");
sakthipriya 3:6c1ed31073f0 185 master.frequency(100000);
sakthipriya 0:252ce694a71e 186 while(1)
sakthipriya 0:252ce694a71e 187 { //Thread::wait(9000);
sakthipriya 0:252ce694a71e 188 //interrupt = 1;
sakthipriya 0:252ce694a71e 189
sakthipriya 0:252ce694a71e 190 FUNC_MASTER_WRITE();
sakthipriya 0:252ce694a71e 191 //interrupt = 0;
sakthipriya 0:252ce694a71e 192 ;
sakthipriya 0:252ce694a71e 193 }
sakthipriya 0:252ce694a71e 194 }