sakthi priya amirtharaj / Mbed 2 deprecated BAE_FRDM_i2c

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Dependencies:   mbed-rtos mbed

Fork of BAE_FRDMTESIN2 by Seeker of Truth ,

slave.cpp@9:221d218f4690, 2014-12-15 (annotated)

Committer:
raizel_varun
Date:
Mon Dec 15 05:58:04 2014 +0000
Revision:
9:221d218f4690
Parent:
7:f06840d848e3
Child:
10:4e86381a4707
I2C INTEGTRATED VR1.1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
raizel_varun 9:221d218f4690 1 #include "mbed.h"
raizel_varun 9:221d218f4690 2 #include "rtos.h"
greenroshks 0:8b0d43fe6c05 3 #include "slave.h"
raizel_varun 9:221d218f4690 4
raizel_varun 9:221d218f4690 5 void write_to_master(char); //function to write data to master
raizel_varun 9:221d218f4690 6
raizel_varun 9:221d218f4690 7 I2CSlave slave(D14,D15); //configuring pins p27, p28 as I2Cslave
raizel_varun 9:221d218f4690 8
raizel_varun 9:221d218f4690 9 Serial pcslave(USBTX, USBRX);
raizel_varun 9:221d218f4690 10 DigitalOut data_ready(D10);
raizel_varun 9:221d218f4690 11 int i2c_status=0; //read/write mode for i2c 0 : write2slave, 1 : write2master
raizel_varun 9:221d218f4690 12 int reset=0;
raizel_varun 9:221d218f4690 13 int temp;
raizel_varun 9:221d218f4690 14
raizel_varun 9:221d218f4690 15 typedef struct
raizel_varun 9:221d218f4690 16 {
raizel_varun 9:221d218f4690 17 char data; // To avoid dynamic memory allocation
raizel_varun 9:221d218f4690 18 int length;
raizel_varun 9:221d218f4690 19 }i2c_data;
raizel_varun 9:221d218f4690 20
raizel_varun 9:221d218f4690 21
raizel_varun 9:221d218f4690 22
raizel_varun 9:221d218f4690 23 Mail<i2c_data,16> i2c_data_receive;
raizel_varun 9:221d218f4690 24 Mail<i2c_data,16> i2c_data_send;
greenroshks 0:8b0d43fe6c05 25
raizel_varun 9:221d218f4690 26
raizel_varun 9:221d218f4690 27 void FUNC_I2C_WRITE2CDMS(char *data, int length=1)
raizel_varun 9:221d218f4690 28 {
raizel_varun 9:221d218f4690 29 int slave_status = 1;
raizel_varun 9:221d218f4690 30
raizel_varun 9:221d218f4690 31 while(slave_status)
raizel_varun 9:221d218f4690 32 {
raizel_varun 9:221d218f4690 33 slave.address(0x20);
raizel_varun 9:221d218f4690 34 if(slave.receive()==1)
greenroshks 0:8b0d43fe6c05 35 {
raizel_varun 9:221d218f4690 36 slave_status=slave.write(data,length);
raizel_varun 9:221d218f4690 37
raizel_varun 9:221d218f4690 38
raizel_varun 9:221d218f4690 39 }
raizel_varun 9:221d218f4690 40 else if(slave.receive()==3 || slave.receive()==2)
raizel_varun 9:221d218f4690 41 {
raizel_varun 9:221d218f4690 42 slave_status=slave.read(data,length);
greenroshks 0:8b0d43fe6c05 43 }
raizel_varun 9:221d218f4690 44
raizel_varun 9:221d218f4690 45 }
raizel_varun 9:221d218f4690 46 printf("\ndone\n\r");
raizel_varun 9:221d218f4690 47
raizel_varun 9:221d218f4690 48 }
raizel_varun 9:221d218f4690 49 char data_send,data_receive;
raizel_varun 9:221d218f4690 50 void T_I2C_BAE()
greenroshks 0:8b0d43fe6c05 51 {
raizel_varun 9:221d218f4690 52 //char data_send,data_receive;
raizel_varun 9:221d218f4690 53 //while(1)
raizel_varun 9:221d218f4690 54 //{
raizel_varun 9:221d218f4690 55 // Thread::signal_wait(0x1);
raizel_varun 9:221d218f4690 56 //i2c_status = temp;
raizel_varun 9:221d218f4690 57 //wait(0.5);
raizel_varun 9:221d218f4690 58 printf("\n entered thread\n\r");
raizel_varun 9:221d218f4690 59 if(i2c_status == 0 && reset !=1)
raizel_varun 9:221d218f4690 60 {
raizel_varun 9:221d218f4690 61
raizel_varun 9:221d218f4690 62 FUNC_I2C_WRITE2CDMS(&data_receive);
raizel_varun 9:221d218f4690 63 i2c_data * i2c_data_r = i2c_data_receive.alloc();
raizel_varun 9:221d218f4690 64 i2c_data_r->data = data_receive;
raizel_varun 9:221d218f4690 65 i2c_data_r->length = 1;
raizel_varun 9:221d218f4690 66 i2c_data_receive.put(i2c_data_r);
raizel_varun 9:221d218f4690 67 printf("\n Data received from CDMS is %c\n\r",data_receive);
raizel_varun 9:221d218f4690 68 i2c_data_receive.free(i2c_data_r); // This has to be done from a differen thread
raizel_varun 9:221d218f4690 69
raizel_varun 9:221d218f4690 70 }
raizel_varun 9:221d218f4690 71 else if(i2c_status ==1 && reset !=1)
raizel_varun 9:221d218f4690 72 {
raizel_varun 9:221d218f4690 73 osEvent evt = i2c_data_send.get();
raizel_varun 9:221d218f4690 74 if (evt.status == osEventMail)
raizel_varun 9:221d218f4690 75 {
raizel_varun 9:221d218f4690 76 i2c_data *i2c_data_s = (i2c_data*)evt.value.p;
raizel_varun 9:221d218f4690 77 data_send = i2c_data_s -> data;
raizel_varun 9:221d218f4690 78 FUNC_I2C_WRITE2CDMS(&data_send);
raizel_varun 9:221d218f4690 79 printf("\nData sent to CDMS is %c\n\r",data_send);
raizel_varun 9:221d218f4690 80 i2c_data_send.free(i2c_data_s);
raizel_varun 9:221d218f4690 81 i2c_status = 0;
raizel_varun 9:221d218f4690 82 //temp = i2c_status;
raizel_varun 9:221d218f4690 83 }
raizel_varun 9:221d218f4690 84 }
raizel_varun 9:221d218f4690 85
raizel_varun 9:221d218f4690 86 //}
raizel_varun 9:221d218f4690 87 }
greenroshks 0:8b0d43fe6c05 88
raizel_varun 9:221d218f4690 89
raizel_varun 9:221d218f4690 90
raizel_varun 9:221d218f4690 91 void FUNC_INT()
raizel_varun 9:221d218f4690 92 {
raizel_varun 9:221d218f4690 93 reset = 0;
raizel_varun 9:221d218f4690 94
raizel_varun 9:221d218f4690 95
raizel_varun 9:221d218f4690 96 }
raizel_varun 9:221d218f4690 97
raizel_varun 9:221d218f4690 98 void FUNC_RESET()
raizel_varun 9:221d218f4690 99 {
raizel_varun 9:221d218f4690 100 reset = 1;
greenroshks 0:8b0d43fe6c05 101 }
raizel_varun 9:221d218f4690 102
raizel_varun 9:221d218f4690 103 void ir2master()
raizel_varun 9:221d218f4690 104 {
raizel_varun 9:221d218f4690 105
raizel_varun 9:221d218f4690 106 char data='a';
raizel_varun 9:221d218f4690 107 data_ready=0;
raizel_varun 9:221d218f4690 108 data = pcslave.getc();
raizel_varun 9:221d218f4690 109 reset =0;
raizel_varun 9:221d218f4690 110 i2c_status=1;
raizel_varun 9:221d218f4690 111 i2c_data * i2c_data_s = i2c_data_send.alloc();
raizel_varun 9:221d218f4690 112 i2c_data_s->data = data;
raizel_varun 9:221d218f4690 113 i2c_data_s->length = 1;
raizel_varun 9:221d218f4690 114 i2c_data_send.put(i2c_data_s);
raizel_varun 9:221d218f4690 115 data_ready=1;
raizel_varun 9:221d218f4690 116 //temp = i2c_status;
greenroshks 0:8b0d43fe6c05 117 }
raizel_varun 9:221d218f4690 118
raizel_varun 9:221d218f4690 119
raizel_varun 9:221d218f4690 120
raizel_varun 9:221d218f4690 121
raizel_varun 9:221d218f4690 122
raizel_varun 9:221d218f4690 123