sakthi priya amirtharaj / Mbed 2 deprecated slave_working1_1_reset_test

slave debug

Dependencies:   mbed-rtos mbed

Fork of slave_working1_1_reset_test by green rosh

main.cpp@7:debeb7070a54, 2014-12-12 (annotated)

Committer:
sakthipriya
Date:
Fri Dec 12 12:16:48 2014 +0000
Revision:
7:debeb7070a54
Parent:
6:8aea752c6eda
Child:
8:04b912dc2443
i2c slave

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
sakthipriya 7:debeb7070a54 11 char data='a';
greenroshks 4:133b49d51b18 12
greenroshks 4:133b49d51b18 13 typedef struct
greenroshks 2:458f9e603814 14 {
greenroshks 4:133b49d51b18 15 char data; // To avoid dynamic memory allocation
greenroshks 4:133b49d51b18 16 int length;
greenroshks 4:133b49d51b18 17 }i2c_data;
viswachaitanya 0:24e80ff2c7b1 18
greenroshks 4:133b49d51b18 19 Mail<i2c_data,16> i2c_data_receive;
greenroshks 4:133b49d51b18 20 Mail<i2c_data,16> i2c_data_send;
raizel_varun 6:8aea752c6eda 21
raizel_varun 6:8aea752c6eda 22 int alpha;
greenroshks 5:ce0bb4174ca4 23 void FUNC_I2C_WRITE2CDMS(char *data, int length=1)
greenroshks 4:133b49d51b18 24 {
raizel_varun 6:8aea752c6eda 25 int slave_status = 1;
raizel_varun 6:8aea752c6eda 26
greenroshks 2:458f9e603814 27 while(slave_status)
greenroshks 2:458f9e603814 28 {
viswachaitanya 0:24e80ff2c7b1 29 slave.address(0x20);
greenroshks 2:458f9e603814 30 if(slave.receive()==1)
greenroshks 2:458f9e603814 31 {
greenroshks 5:ce0bb4174ca4 32 slave_status=slave.write(data,length);
sakthipriya 7:debeb7070a54 33
greenroshks 2:458f9e603814 34
viswachaitanya 0:24e80ff2c7b1 35 }
greenroshks 3:5e68dd4bbb70 36 else
greenroshks 3:5e68dd4bbb70 37 if(slave.receive()==3 || slave.receive()==2)
greenroshks 3:5e68dd4bbb70 38 {
sakthipriya 7:debeb7070a54 39
greenroshks 5:ce0bb4174ca4 40 slave_status=slave.read(data,length);
sakthipriya 7:debeb7070a54 41
greenroshks 3:5e68dd4bbb70 42 }
sakthipriya 7:debeb7070a54 43
greenroshks 2:458f9e603814 44 }
sakthipriya 7:debeb7070a54 45 printf("done");
greenroshks 4:133b49d51b18 46
greenroshks 2:458f9e603814 47 }
greenroshks 2:458f9e603814 48
greenroshks 4:133b49d51b18 49 void T_I2C_BAE(void const * args)
greenroshks 2:458f9e603814 50 {
greenroshks 4:133b49d51b18 51 char data_send,data_receive;
greenroshks 4:133b49d51b18 52 while(1)
greenroshks 4:133b49d51b18 53 {
greenroshks 4:133b49d51b18 54 Thread::signal_wait(0x1);
greenroshks 5:ce0bb4174ca4 55 if(i2c_status == 0)
greenroshks 5:ce0bb4174ca4 56 {
greenroshks 5:ce0bb4174ca4 57
greenroshks 5:ce0bb4174ca4 58 FUNC_I2C_WRITE2CDMS(&data_receive);
greenroshks 5:ce0bb4174ca4 59 i2c_data * i2c_data_r = i2c_data_receive.alloc();
greenroshks 5:ce0bb4174ca4 60 i2c_data_r->data = data_receive;
greenroshks 5:ce0bb4174ca4 61 i2c_data_r->length = 1;
greenroshks 5:ce0bb4174ca4 62 i2c_data_receive.put(i2c_data_r);
raizel_varun 6:8aea752c6eda 63 printf("\n Data received from CDMS is %c\n",data_receive);
sakthipriya 7:debeb7070a54 64 i2c_data_receive.free(i2c_data_r);
raizel_varun 6:8aea752c6eda 65
greenroshks 5:ce0bb4174ca4 66 }
greenroshks 5:ce0bb4174ca4 67 else if(i2c_status ==1 )
greenroshks 5:ce0bb4174ca4 68 {
greenroshks 5:ce0bb4174ca4 69 osEvent evt = i2c_data_send.get();
greenroshks 5:ce0bb4174ca4 70 if (evt.status == osEventMail)
greenroshks 5:ce0bb4174ca4 71 {
greenroshks 5:ce0bb4174ca4 72 i2c_data *i2c_data_s = (i2c_data*)evt.value.p;
greenroshks 5:ce0bb4174ca4 73 data_send = i2c_data_s -> data;
greenroshks 5:ce0bb4174ca4 74 FUNC_I2C_WRITE2CDMS(&data_send);
greenroshks 5:ce0bb4174ca4 75 printf("\nData sent to CDMS is %c\n",data_send);
greenroshks 5:ce0bb4174ca4 76 i2c_data_send.free(i2c_data_s);
greenroshks 5:ce0bb4174ca4 77 i2c_status = 0;
raizel_varun 6:8aea752c6eda 78
sakthipriya 7:debeb7070a54 79
greenroshks 5:ce0bb4174ca4 80 }
raizel_varun 6:8aea752c6eda 81
raizel_varun 6:8aea752c6eda 82
raizel_varun 6:8aea752c6eda 83
raizel_varun 6:8aea752c6eda 84 }
raizel_varun 6:8aea752c6eda 85
greenroshks 4:133b49d51b18 86 }
greenroshks 2:458f9e603814 87 }
greenroshks 4:133b49d51b18 88
greenroshks 4:133b49d51b18 89 void FUNC_INT()
greenroshks 4:133b49d51b18 90 {
sakthipriya 7:debeb7070a54 91
greenroshks 4:133b49d51b18 92 ptr_t_i2c->signal_set(0x1);
sakthipriya 7:debeb7070a54 93
greenroshks 4:133b49d51b18 94 }
sakthipriya 7:debeb7070a54 95
sakthipriya 7:debeb7070a54 96 void ir2master()
sakthipriya 7:debeb7070a54 97 {
sakthipriya 7:debeb7070a54 98 data_ready=0;
sakthipriya 7:debeb7070a54 99 data = pc.getc();
sakthipriya 7:debeb7070a54 100 i2c_status=1;
sakthipriya 7:debeb7070a54 101 i2c_data * i2c_data_s = i2c_data_send.alloc();
sakthipriya 7:debeb7070a54 102 i2c_data_s->data = data;
sakthipriya 7:debeb7070a54 103 i2c_data_s->length = 1;
sakthipriya 7:debeb7070a54 104 i2c_data_send.put(i2c_data_s);
sakthipriya 7:debeb7070a54 105 data_ready=1;
sakthipriya 7:debeb7070a54 106 }
sakthipriya 7:debeb7070a54 107
greenroshks 4:133b49d51b18 108
greenroshks 4:133b49d51b18 109
greenroshks 4:133b49d51b18 110
raizel_varun 6:8aea752c6eda 111 int main()
raizel_varun 6:8aea752c6eda 112 {
raizel_varun 6:8aea752c6eda 113
raizel_varun 6:8aea752c6eda 114
greenroshks 4:133b49d51b18 115 ptr_t_i2c = new Thread(T_I2C_BAE);
greenroshks 4:133b49d51b18 116 interrupt.rise(&FUNC_INT);
greenroshks 2:458f9e603814 117 while(1)
greenroshks 2:458f9e603814 118 {
sakthipriya 7:debeb7070a54 119 ir2master();
greenroshks 5:ce0bb4174ca4 120
greenroshks 2:458f9e603814 121 }
raizel_varun 6:8aea752c6eda 122
raizel_varun 6:8aea752c6eda 123 }
raizel_varun 6:8aea752c6eda 124
raizel_varun 6:8aea752c6eda 125
raizel_varun 6:8aea752c6eda 126
raizel_varun 6:8aea752c6eda 127