Chaitanya Viswa / Mbed 2 deprecated freeslave5_1

funtions sorted

Dependencies:   mbed

main.cpp@0:21ffb42911bd, 2014-12-08 (annotated)

Committer:
viswachaitanya
Date:
Mon Dec 08 12:36:07 2014 +0000
Revision:
0:21ffb42911bd
write and read functions sorted

Who changed what in which revision?

UserRevisionLine numberNew contents of line
viswachaitanya 0:21ffb42911bd 1 #include "mbed.h"
viswachaitanya 0:21ffb42911bd 2
viswachaitanya 0:21ffb42911bd 3 char* read_from_master(); //function to write data to master
viswachaitanya 0:21ffb42911bd 4 int write_to_master(char*,int);
viswachaitanya 0:21ffb42911bd 5
viswachaitanya 0:21ffb42911bd 6 I2CSlave slave(D14,D15); //configuring pins p27, p28 as I2Cslave
viswachaitanya 0:21ffb42911bd 7 Serial pc (USBTX,USBRX);
viswachaitanya 0:21ffb42911bd 8
viswachaitanya 0:21ffb42911bd 9 bool read_loop = true;
viswachaitanya 0:21ffb42911bd 10 bool write_loop = true;
viswachaitanya 0:21ffb42911bd 11 char *data_rec = new char;
viswachaitanya 0:21ffb42911bd 12 char *data_send = new char;
viswachaitanya 0:21ffb42911bd 13 char *rec_data = new char;
viswachaitanya 0:21ffb42911bd 14 int slave_status = 1;
viswachaitanya 0:21ffb42911bd 15 int k;
viswachaitanya 0:21ffb42911bd 16
viswachaitanya 0:21ffb42911bd 17
viswachaitanya 0:21ffb42911bd 18 int main(){
viswachaitanya 0:21ffb42911bd 19
viswachaitanya 0:21ffb42911bd 20 slave.address(0x20);
viswachaitanya 0:21ffb42911bd 21 while(1){
viswachaitanya 0:21ffb42911bd 22 slave.stop();
viswachaitanya 0:21ffb42911bd 23 printf("11 press any character for slave to start \n\r");
viswachaitanya 0:21ffb42911bd 24 *data_send = pc.getc();
viswachaitanya 0:21ffb42911bd 25
viswachaitanya 0:21ffb42911bd 26 printf("1 in main\n\r");
viswachaitanya 0:21ffb42911bd 27 k = write_to_master(data_send,1);
viswachaitanya 0:21ffb42911bd 28 printf("4 done transfer with return %d\n\r",k);
viswachaitanya 0:21ffb42911bd 29 }
viswachaitanya 0:21ffb42911bd 30
viswachaitanya 0:21ffb42911bd 31 }
viswachaitanya 0:21ffb42911bd 32
viswachaitanya 0:21ffb42911bd 33
viswachaitanya 0:21ffb42911bd 34 char* read_from_master(){
viswachaitanya 0:21ffb42911bd 35
viswachaitanya 0:21ffb42911bd 36 while(slave_status)
viswachaitanya 0:21ffb42911bd 37 slave_status=slave.read(data_rec,1);
viswachaitanya 0:21ffb42911bd 38
viswachaitanya 0:21ffb42911bd 39 return(data_rec);
viswachaitanya 0:21ffb42911bd 40
viswachaitanya 0:21ffb42911bd 41
viswachaitanya 0:21ffb42911bd 42 //read_loop = true;
viswachaitanya 0:21ffb42911bd 43 //slave.stop();
viswachaitanya 0:21ffb42911bd 44
viswachaitanya 0:21ffb42911bd 45 }
viswachaitanya 0:21ffb42911bd 46
viswachaitanya 0:21ffb42911bd 47 int write_to_master(char* send, int length){
viswachaitanya 0:21ffb42911bd 48 slave_status=1;
viswachaitanya 0:21ffb42911bd 49 while(slave_status){
viswachaitanya 0:21ffb42911bd 50 printf("2 wait for status\n\r");
viswachaitanya 0:21ffb42911bd 51 //if(slave.receive()==1)
viswachaitanya 0:21ffb42911bd 52 {
viswachaitanya 0:21ffb42911bd 53 slave_status=slave.write(send,length);
viswachaitanya 0:21ffb42911bd 54 }
viswachaitanya 0:21ffb42911bd 55 }
viswachaitanya 0:21ffb42911bd 56 printf("3 wrote %c to master\n\r",*data_send);
viswachaitanya 0:21ffb42911bd 57
viswachaitanya 0:21ffb42911bd 58 //slave.stop();
viswachaitanya 0:21ffb42911bd 59 return(1);
viswachaitanya 0:21ffb42911bd 60 }