Seeker of Truth , / Mbed 2 deprecated CDMS_vr2_1_1

hkdata recieve using string working

Dependencies:   mbed-rtos mbed

Fork of BAE_vr2_1_0_hkdata by Seeker of Truth ,

main.cpp@5:29ec04694833, 2014-12-16 (annotated)

Committer:
raizel_varun
Date:
Tue Dec 16 11:05:44 2014 +0000
Revision:
5:29ec04694833
Parent:
4:cf8d2c7b65ad 
BAE_vr 2.1.0 [hk_data in string] working

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sakthipriya 0:58b0c597a58c 1 #include "mbed.h"
sakthipriya 0:58b0c597a58c 2 #include "rtos.h"
sakthipriya 0:58b0c597a58c 3
sakthipriya 0:58b0c597a58c 4 const int addr = 0x20; //slave address
sakthipriya 0:58b0c597a58c 5 I2C master (D14,D15); //configure pins p27,p28 as I2C master
sakthipriya 0:58b0c597a58c 6 Serial pc (USBTX,USBRX);
sakthipriya 0:58b0c597a58c 7 DigitalOut interrupt(D9);
sakthipriya 0:58b0c597a58c 8 InterruptIn data_ready(D10);
sakthipriya 0:58b0c597a58c 9
sakthipriya 0:58b0c597a58c 10 int reset;
sakthipriya 0:58b0c597a58c 11
sakthipriya 0:58b0c597a58c 12 typedef struct
sakthipriya 0:58b0c597a58c 13 {
raizel_varun 5:29ec04694833 14 char data[35]; // To avoid dynamic memory allocation
sakthipriya 0:58b0c597a58c 15 int length;
sakthipriya 0:58b0c597a58c 16 }i2c_data;
sakthipriya 0:58b0c597a58c 17
sakthipriya 0:58b0c597a58c 18 Mail<i2c_data,16> i2c_data_receive;
sakthipriya 0:58b0c597a58c 19 Mail<i2c_data,16> i2c_data_send;
sakthipriya 0:58b0c597a58c 20
sakthipriya 0:58b0c597a58c 21 Thread * ptr_t_i2c;
sakthipriya 0:58b0c597a58c 22 void FUNC_I2C_MASTER_FSLAVE(char * data,int length)
sakthipriya 0:58b0c597a58c 23 {
sakthipriya 0:58b0c597a58c 24 //printf("press backspace for master to start \n\r");
sakthipriya 0:58b0c597a58c 25 //while(1){
sakthipriya 0:58b0c597a58c 26 //interrupt = 0;
sakthipriya 0:58b0c597a58c 27 // if(pc.getc()=='z'){
sakthipriya 0:58b0c597a58c 28 wait(0.5);
sakthipriya 0:58b0c597a58c 29 interrupt = 1;
sakthipriya 0:58b0c597a58c 30 printf("\nMaster executed\n");
sakthipriya 0:58b0c597a58c 31
sakthipriya 0:58b0c597a58c 32
sakthipriya 0:58b0c597a58c 33 bool ack0 =true;
sakthipriya 0:58b0c597a58c 34 bool loopvariable0 =true;
sakthipriya 0:58b0c597a58c 35 //char *data = new char;
sakthipriya 0:58b0c597a58c 36 //*data = 'b';
sakthipriya 0:58b0c597a58c 37
sakthipriya 0:58b0c597a58c 38
sakthipriya 0:58b0c597a58c 39
sakthipriya 0:58b0c597a58c 40 master.frequency(100000); //set clock frequency
sakthipriya 0:58b0c597a58c 41 //master.start();
sakthipriya 0:58b0c597a58c 42 /*while(write2slave)
sakthipriya 0:58b0c597a58c 43 { *writedata = pc.getc();
sakthipriya 0:58b0c597a58c 44 wait(0.5);
sakthipriya 0:58b0c597a58c 45
sakthipriya 0:58b0c597a58c 46 printf("master clk freq setup and addressing slave\n\r");
sakthipriya 0:58b0c597a58c 47 master.start(); //initiating the data transfer
sakthipriya 0:58b0c597a58c 48 master_status_write = (bool) master.write(addr|0x00,writedata,1);
sakthipriya 0:58b0c597a58c 49 if(master_status_write==0)
sakthipriya 0:58b0c597a58c 50 {
sakthipriya 0:58b0c597a58c 51 printf("master has written %c to slave\n\r",*writedata);
sakthipriya 0:58b0c597a58c 52 write2slave=false;
sakthipriya 0:58b0c597a58c 53 }
sakthipriya 0:58b0c597a58c 54
sakthipriya 0:58b0c597a58c 55
sakthipriya 0:58b0c597a58c 56 }*/
sakthipriya 0:58b0c597a58c 57
sakthipriya 0:58b0c597a58c 58 while(ack0)
sakthipriya 0:58b0c597a58c 59 {
sakthipriya 0:58b0c597a58c 60 //printf("2 master clk freq setup and addressing slave\n\r");
sakthipriya 0:58b0c597a58c 61
sakthipriya 0:58b0c597a58c 62 master.start(); //initiating the data transfer
sakthipriya 0:58b0c597a58c 63 ack0 = master.read(addr,data,length);
sakthipriya 0:58b0c597a58c 64 }
sakthipriya 0:58b0c597a58c 65 if(!ack0)
sakthipriya 0:58b0c597a58c 66 {
greenroshks 3:e1dc841fca6d 67 printf("\n master has read %s from slave\n\r",data);
sakthipriya 0:58b0c597a58c 68 loopvariable0=false;
sakthipriya 0:58b0c597a58c 69 }
sakthipriya 0:58b0c597a58c 70 //master.stop();
sakthipriya 0:58b0c597a58c 71
sakthipriya 0:58b0c597a58c 72 //printf("done\n\r");
sakthipriya 0:58b0c597a58c 73 //delete data;
sakthipriya 0:58b0c597a58c 74 interrupt=0;
sakthipriya 0:58b0c597a58c 75 }
sakthipriya 0:58b0c597a58c 76
sakthipriya 0:58b0c597a58c 77 void T_I2C_MASTER_FSLAVE(void const *args)
sakthipriya 0:58b0c597a58c 78 {
raizel_varun 5:29ec04694833 79 char data_receive[35];
sakthipriya 0:58b0c597a58c 80 while(1)
sakthipriya 0:58b0c597a58c 81 {
sakthipriya 0:58b0c597a58c 82 Thread::signal_wait(0x1);
raizel_varun 5:29ec04694833 83 FUNC_I2C_MASTER_FSLAVE(data_receive,35);
sakthipriya 0:58b0c597a58c 84 i2c_data * i2c_data_r = i2c_data_receive.alloc();
greenroshks 3:e1dc841fca6d 85 strcpy(i2c_data_r->data , data_receive);
raizel_varun 5:29ec04694833 86 i2c_data_r->length = 35;
sakthipriya 0:58b0c597a58c 87 i2c_data_receive.put(i2c_data_r);
greenroshks 3:e1dc841fca6d 88 printf("\n Data received from slave is %s\n\r",data_receive);
sakthipriya 0:58b0c597a58c 89 i2c_data_receive.free(i2c_data_r);
sakthipriya 0:58b0c597a58c 90 }
sakthipriya 0:58b0c597a58c 91 }
sakthipriya 0:58b0c597a58c 92
sakthipriya 0:58b0c597a58c 93 void FUNC_INT()
sakthipriya 0:58b0c597a58c 94 {
sakthipriya 0:58b0c597a58c 95
sakthipriya 0:58b0c597a58c 96 ptr_t_i2c->signal_set(0x1);
sakthipriya 0:58b0c597a58c 97
sakthipriya 0:58b0c597a58c 98 }
sakthipriya 0:58b0c597a58c 99
raizel_varun 5:29ec04694833 100 char writedata[35];
raizel_varun 4:cf8d2c7b65ad 101 bool write2slave;
raizel_varun 4:cf8d2c7b65ad 102 bool master_status_write;
sakthipriya 1:e5c939440756 103 void FUNC_MASTER_WRITE()
raizel_varun 4:cf8d2c7b65ad 104 { //wait(1);
raizel_varun 4:cf8d2c7b65ad 105 write2slave=true;
sakthipriya 0:58b0c597a58c 106
raizel_varun 4:cf8d2c7b65ad 107 interrupt = 1;
sakthipriya 1:e5c939440756 108
raizel_varun 5:29ec04694833 109 char data[35];
raizel_varun 4:cf8d2c7b65ad 110 strcpy(data,"sakthi");
raizel_varun 4:cf8d2c7b65ad 111 strcat(data,"priya");
sakthipriya 1:e5c939440756 112 i2c_data * i2c_data_s = i2c_data_send.alloc();
greenroshks 3:e1dc841fca6d 113 strcpy(i2c_data_s->data ,data);
raizel_varun 5:29ec04694833 114 i2c_data_s->length = 35;
sakthipriya 1:e5c939440756 115 i2c_data_send.put(i2c_data_s);
raizel_varun 4:cf8d2c7b65ad 116 master_status_write = true;
raizel_varun 4:cf8d2c7b65ad 117
raizel_varun 4:cf8d2c7b65ad 118 // interrupt = 1;
raizel_varun 4:cf8d2c7b65ad 119
sakthipriya 1:e5c939440756 120 osEvent evt = i2c_data_send.get();
sakthipriya 1:e5c939440756 121 if (evt.status == osEventMail)
sakthipriya 1:e5c939440756 122 {
sakthipriya 1:e5c939440756 123 i2c_data *i2c_data_s = (i2c_data*)evt.value.p;
greenroshks 3:e1dc841fca6d 124 strcpy(writedata ,i2c_data_s -> data);
sakthipriya 0:58b0c597a58c 125 master.frequency(100000); //set clock frequency
sakthipriya 0:58b0c597a58c 126 while(write2slave)
sakthipriya 1:e5c939440756 127 {
sakthipriya 0:58b0c597a58c 128 printf("master clk freq setup and addressing slave\n\r");
sakthipriya 0:58b0c597a58c 129 master.start(); //initiating the data transfer
raizel_varun 5:29ec04694833 130 master_status_write = (bool) master.write(addr|0x00,writedata,35);
sakthipriya 0:58b0c597a58c 131 if(master_status_write==0)
sakthipriya 0:58b0c597a58c 132 {
greenroshks 3:e1dc841fca6d 133 printf("master has written %s to slave\n\r",writedata);
sakthipriya 0:58b0c597a58c 134 write2slave=false;
sakthipriya 0:58b0c597a58c 135 }
sakthipriya 2:e80af3c366aa 136 i2c_data_send.free(i2c_data_s);
sakthipriya 1:e5c939440756 137 }
sakthipriya 0:58b0c597a58c 138 }
raizel_varun 4:cf8d2c7b65ad 139 interrupt = 0;
sakthipriya 1:e5c939440756 140 }
sakthipriya 1:e5c939440756 141
sakthipriya 1:e5c939440756 142
sakthipriya 1:e5c939440756 143
sakthipriya 1:e5c939440756 144 int main()
sakthipriya 1:e5c939440756 145 {
sakthipriya 1:e5c939440756 146 ptr_t_i2c = new Thread(T_I2C_MASTER_FSLAVE);
sakthipriya 1:e5c939440756 147 data_ready.rise(&FUNC_INT);
sakthipriya 1:e5c939440756 148 printf("\nstarted master\n");
sakthipriya 1:e5c939440756 149 while(1)
raizel_varun 4:cf8d2c7b65ad 150 { Thread::wait(8000);
raizel_varun 4:cf8d2c7b65ad 151 //interrupt = 1;
raizel_varun 4:cf8d2c7b65ad 152
raizel_varun 4:cf8d2c7b65ad 153 FUNC_MASTER_WRITE();
raizel_varun 4:cf8d2c7b65ad 154 //interrupt = 0;
greenroshks 3:e1dc841fca6d 155 ;
sakthipriya 0:58b0c597a58c 156 }
sakthipriya 0:58b0c597a58c 157 }