green rosh / Mbed 2 deprecated slave_working1_1_reset_test

check the commit mesg

Dependencies:   mbed-rtos mbed

Fork of slave_working1_1 by sakthi priya amirtharaj

main.cpp@6:8aea752c6eda, 2014-12-12 (annotated)

Committer:
raizel_varun
Date:
Fri Dec 12 08:51:42 2014 +0000
Revision:
6:8aea752c6eda
Parent:
5:ce0bb4174ca4
Child:
7:debeb7070a54
alphaless

Who changed what in which revision?

UserRevisionLine numberNew contents of line
viswachaitanya 0:24e80ff2c7b1 1 #include "mbed.h"
greenroshks 4:133b49d51b18 2 #include "rtos.h"
viswachaitanya 0:24e80ff2c7b1 3
viswachaitanya 0:24e80ff2c7b1 4 void write_to_master(char); //function to write data to master
greenroshks 4:133b49d51b18 5 Thread * ptr_t_i2c;
viswachaitanya 0:24e80ff2c7b1 6 I2CSlave slave(D14,D15); //configuring pins p27, p28 as I2Cslave
viswachaitanya 0:24e80ff2c7b1 7 Serial pc (USBTX,USBRX);
greenroshks 2:458f9e603814 8 InterruptIn interrupt(D9);
greenroshks 5:ce0bb4174ca4 9 DigitalOut data_ready(D10);
greenroshks 5:ce0bb4174ca4 10 int i2c_status=0; //read/write mode for i2c 0 : write2slave, 1 : write2master
greenroshks 4:133b49d51b18 11
greenroshks 4:133b49d51b18 12 typedef struct
greenroshks 2:458f9e603814 13 {
greenroshks 4:133b49d51b18 14 char data; // To avoid dynamic memory allocation
greenroshks 4:133b49d51b18 15 int length;
greenroshks 4:133b49d51b18 16 }i2c_data;
viswachaitanya 0:24e80ff2c7b1 17
greenroshks 4:133b49d51b18 18 Mail<i2c_data,16> i2c_data_receive;
greenroshks 4:133b49d51b18 19 Mail<i2c_data,16> i2c_data_send;
raizel_varun 6:8aea752c6eda 20
raizel_varun 6:8aea752c6eda 21 int alpha;
greenroshks 5:ce0bb4174ca4 22 void FUNC_I2C_WRITE2CDMS(char *data, int length=1)
greenroshks 4:133b49d51b18 23 {
raizel_varun 6:8aea752c6eda 24 int slave_status = 1;
raizel_varun 6:8aea752c6eda 25
greenroshks 2:458f9e603814 26 while(slave_status)
greenroshks 2:458f9e603814 27 {
viswachaitanya 0:24e80ff2c7b1 28 slave.address(0x20);
greenroshks 2:458f9e603814 29 if(slave.receive()==1)
greenroshks 2:458f9e603814 30 {
greenroshks 5:ce0bb4174ca4 31 slave_status=slave.write(data,length);
greenroshks 3:5e68dd4bbb70 32 // printf("\n In the while loop\n");
greenroshks 2:458f9e603814 33
greenroshks 4:133b49d51b18 34 /*if(!slave_status)
greenroshks 2:458f9e603814 35 {
greenroshks 3:5e68dd4bbb70 36 printf("slave wrote %c to master\n\r",*data);
greenroshks 2:458f9e603814 37
greenroshks 3:5e68dd4bbb70 38 }*/
greenroshks 2:458f9e603814 39
viswachaitanya 0:24e80ff2c7b1 40 }
greenroshks 3:5e68dd4bbb70 41 else
greenroshks 3:5e68dd4bbb70 42 if(slave.receive()==3 || slave.receive()==2)
greenroshks 3:5e68dd4bbb70 43 {
greenroshks 4:133b49d51b18 44 //i2c_data *i2c_data_r = i2c_data_receive.alloc();
greenroshks 5:ce0bb4174ca4 45 slave_status=slave.read(data,length);
greenroshks 3:5e68dd4bbb70 46 /*if(!slave_status)
greenroshks 3:5e68dd4bbb70 47 {
greenroshks 3:5e68dd4bbb70 48 printf("1 read %c from master\n\r",*data);
greenroshks 3:5e68dd4bbb70 49 }*/
greenroshks 3:5e68dd4bbb70 50 }
greenroshks 2:458f9e603814 51 //slave.stop();
greenroshks 2:458f9e603814 52 }
viswachaitanya 0:24e80ff2c7b1 53 printf("2 done");
greenroshks 4:133b49d51b18 54
greenroshks 2:458f9e603814 55 }
greenroshks 2:458f9e603814 56
greenroshks 4:133b49d51b18 57 void T_I2C_BAE(void const * args)
greenroshks 2:458f9e603814 58 {
greenroshks 4:133b49d51b18 59 char data_send,data_receive;
greenroshks 5:ce0bb4174ca4 60 //data_send = 'a';
greenroshks 4:133b49d51b18 61 while(1)
greenroshks 4:133b49d51b18 62 {
greenroshks 4:133b49d51b18 63 Thread::signal_wait(0x1);
raizel_varun 6:8aea752c6eda 64 printf("\nbdh\n");
raizel_varun 6:8aea752c6eda 65 //i2c_status=alpha;
raizel_varun 6:8aea752c6eda 66 printf(" i2c status is %d " , i2c_status);
greenroshks 5:ce0bb4174ca4 67 if(i2c_status == 0)
greenroshks 5:ce0bb4174ca4 68 {
greenroshks 5:ce0bb4174ca4 69
greenroshks 5:ce0bb4174ca4 70 FUNC_I2C_WRITE2CDMS(&data_receive);
raizel_varun 6:8aea752c6eda 71 printf("\n i2c=0\n\r");
raizel_varun 6:8aea752c6eda 72
greenroshks 5:ce0bb4174ca4 73 i2c_data * i2c_data_r = i2c_data_receive.alloc();
greenroshks 5:ce0bb4174ca4 74 i2c_data_r->data = data_receive;
greenroshks 5:ce0bb4174ca4 75 i2c_data_r->length = 1;
greenroshks 5:ce0bb4174ca4 76 i2c_data_receive.put(i2c_data_r);
raizel_varun 6:8aea752c6eda 77 printf("\n Data received from CDMS is %c\n",data_receive);
raizel_varun 6:8aea752c6eda 78
greenroshks 5:ce0bb4174ca4 79 }
greenroshks 5:ce0bb4174ca4 80 else if(i2c_status ==1 )
greenroshks 5:ce0bb4174ca4 81 {
greenroshks 5:ce0bb4174ca4 82 osEvent evt = i2c_data_send.get();
greenroshks 5:ce0bb4174ca4 83 if (evt.status == osEventMail)
greenroshks 5:ce0bb4174ca4 84 {
greenroshks 5:ce0bb4174ca4 85 i2c_data *i2c_data_s = (i2c_data*)evt.value.p;
greenroshks 5:ce0bb4174ca4 86 //printf("\nData read from CDMS is %c\n",i2c_data_r->data);
greenroshks 5:ce0bb4174ca4 87 data_send = i2c_data_s -> data;
greenroshks 5:ce0bb4174ca4 88 FUNC_I2C_WRITE2CDMS(&data_send);
greenroshks 5:ce0bb4174ca4 89 printf("\nData sent to CDMS is %c\n",data_send);
greenroshks 5:ce0bb4174ca4 90 i2c_data_send.free(i2c_data_s);
greenroshks 5:ce0bb4174ca4 91 i2c_status = 0;
raizel_varun 6:8aea752c6eda 92
greenroshks 5:ce0bb4174ca4 93 //delete i2c_data_r;
greenroshks 5:ce0bb4174ca4 94 }
raizel_varun 6:8aea752c6eda 95
raizel_varun 6:8aea752c6eda 96
raizel_varun 6:8aea752c6eda 97
raizel_varun 6:8aea752c6eda 98 }
raizel_varun 6:8aea752c6eda 99
greenroshks 4:133b49d51b18 100 }
greenroshks 2:458f9e603814 101 }
greenroshks 4:133b49d51b18 102
greenroshks 4:133b49d51b18 103 void FUNC_INT()
greenroshks 4:133b49d51b18 104 {
greenroshks 4:133b49d51b18 105 // char * data = new char;
greenroshks 4:133b49d51b18 106 //*data = 'a';
raizel_varun 6:8aea752c6eda 107 //printf("\blah\n");
greenroshks 4:133b49d51b18 108 ptr_t_i2c->signal_set(0x1);
greenroshks 4:133b49d51b18 109 //delete data;
raizel_varun 6:8aea752c6eda 110
greenroshks 4:133b49d51b18 111 }
greenroshks 4:133b49d51b18 112
greenroshks 4:133b49d51b18 113
greenroshks 4:133b49d51b18 114
raizel_varun 6:8aea752c6eda 115 int main()
raizel_varun 6:8aea752c6eda 116 {
raizel_varun 6:8aea752c6eda 117
raizel_varun 6:8aea752c6eda 118
greenroshks 4:133b49d51b18 119 ptr_t_i2c = new Thread(T_I2C_BAE);
greenroshks 4:133b49d51b18 120 char data='a';
greenroshks 4:133b49d51b18 121 interrupt.rise(&FUNC_INT);
greenroshks 2:458f9e603814 122 while(1)
greenroshks 2:458f9e603814 123 {
greenroshks 2:458f9e603814 124 //*(data_send)=pc.getc();
greenroshks 2:458f9e603814 125
greenroshks 4:133b49d51b18 126 //FUNC_I2C_WRITE2CDMS(&data,1);
greenroshks 4:133b49d51b18 127 //printf("\n The data send or received by slave is %c\n",data);
greenroshks 4:133b49d51b18 128 //(data)++;
greenroshks 2:458f9e603814 129 //wait(1);
greenroshks 5:ce0bb4174ca4 130 //Remove the comments for receiving data
greenroshks 5:ce0bb4174ca4 131 /* osEvent evt = i2c_data_receive.get();
greenroshks 4:133b49d51b18 132 if (evt.status == osEventMail)
greenroshks 4:133b49d51b18 133 {
greenroshks 4:133b49d51b18 134 i2c_data *i2c_data_r = (i2c_data*)evt.value.p;
greenroshks 4:133b49d51b18 135 printf("\nData read from CDMS is %c\n",i2c_data_r->data);
greenroshks 4:133b49d51b18 136
greenroshks 4:133b49d51b18 137 i2c_data_receive.free(i2c_data_r);
greenroshks 4:133b49d51b18 138 //delete i2c_data_r;
greenroshks 5:ce0bb4174ca4 139 }*/
greenroshks 5:ce0bb4174ca4 140 //put in comments for receiving data
greenroshks 5:ce0bb4174ca4 141 data_ready=0;
greenroshks 5:ce0bb4174ca4 142 data = pc.getc();
raizel_varun 6:8aea752c6eda 143 printf(" %c ", data);
raizel_varun 6:8aea752c6eda 144 i2c_status=1;
raizel_varun 6:8aea752c6eda 145 printf(" %d ", i2c_status );
greenroshks 5:ce0bb4174ca4 146 i2c_data * i2c_data_s = i2c_data_send.alloc();
greenroshks 5:ce0bb4174ca4 147 i2c_data_s->data = data;
greenroshks 5:ce0bb4174ca4 148 i2c_data_s->length = 1;
greenroshks 5:ce0bb4174ca4 149 i2c_data_send.put(i2c_data_s);
raizel_varun 6:8aea752c6eda 150 // wait(0.5);
raizel_varun 6:8aea752c6eda 151 alpha=i2c_status;
greenroshks 5:ce0bb4174ca4 152 data_ready=1;
raizel_varun 6:8aea752c6eda 153
greenroshks 5:ce0bb4174ca4 154
greenroshks 2:458f9e603814 155 }
raizel_varun 6:8aea752c6eda 156
raizel_varun 6:8aea752c6eda 157 }
raizel_varun 6:8aea752c6eda 158
raizel_varun 6:8aea752c6eda 159
raizel_varun 6:8aea752c6eda 160
raizel_varun 6:8aea752c6eda 161