Chaitanya Viswa / Mbed 2 deprecated swmasterboolmplus

freemaster1.0

Dependencies:   mbed

master.cpp@0:a39f49a913e6, 2014-12-03 (annotated)

Committer:
viswachaitanya
Date:
Wed Dec 03 10:36:09 2014 +0000
Revision:
0:a39f49a913e6
pre 12/2014 testing

Who changed what in which revision?

UserRevisionLine numberNew contents of line
viswachaitanya 0:a39f49a913e6 1 #include "master.h"
viswachaitanya 0:a39f49a913e6 2
viswachaitanya 0:a39f49a913e6 3 I2C master (p28,p27); //configure pins p27,p28 as I2C master
viswachaitanya 0:a39f49a913e6 4 Serial pc (USBTX,USBRX);
viswachaitanya 0:a39f49a913e6 5
viswachaitanya 0:a39f49a913e6 6 struct SensorData //HK_data_structure
viswachaitanya 0:a39f49a913e6 7 {
viswachaitanya 0:a39f49a913e6 8 char voltage[10];
viswachaitanya 0:a39f49a913e6 9 char current[10];
viswachaitanya 0:a39f49a913e6 10 char temp[10];
viswachaitanya 0:a39f49a913e6 11 } Sensor;
viswachaitanya 0:a39f49a913e6 12
viswachaitanya 0:a39f49a913e6 13 void master_main()
viswachaitanya 0:a39f49a913e6 14 {
viswachaitanya 0:a39f49a913e6 15 wait(0.5);
viswachaitanya 0:a39f49a913e6 16 printf("1\n");
viswachaitanya 0:a39f49a913e6 17 bool acknowledge1;
viswachaitanya 0:a39f49a913e6 18 bool acknowledge2;
viswachaitanya 0:a39f49a913e6 19 uint8_t loopvariable2=0;
viswachaitanya 0:a39f49a913e6 20 bool loopvariable1 = true;
viswachaitanya 0:a39f49a913e6 21 bool loopvariable3 = true;
viswachaitanya 0:a39f49a913e6 22 while(loopvariable1)
viswachaitanya 0:a39f49a913e6 23 {
viswachaitanya 0:a39f49a913e6 24 //-------------writing the command to slave--------------------------------------------------------------
viswachaitanya 0:a39f49a913e6 25 printf("2\n");
viswachaitanya 0:a39f49a913e6 26 master.frequency(100000); //set clock frequency
viswachaitanya 0:a39f49a913e6 27 master.start(); //initiating the data transfer
viswachaitanya 0:a39f49a913e6 28 acknowledge2 = (bool) master.write(addr|0x00); //addressing the slave to write
viswachaitanya 0:a39f49a913e6 29 if(acknowledge2) //proceeding further only if slave is addressed
viswachaitanya 0:a39f49a913e6 30 {
viswachaitanya 0:a39f49a913e6 31 printf("3\n");
viswachaitanya 0:a39f49a913e6 32 acknowledge1 = (bool) master.write(get_hk_data); //sending the command to slave
viswachaitanya 0:a39f49a913e6 33 if(acknowledge1) //proceeding further only if sent data is acknowledged
viswachaitanya 0:a39f49a913e6 34 {
viswachaitanya 0:a39f49a913e6 35 printf("acknowledge1=%d\n",acknowledge1);
viswachaitanya 0:a39f49a913e6 36 loopvariable1=false; //if acknowledged, breaking loop in next iteration
viswachaitanya 0:a39f49a913e6 37
viswachaitanya 0:a39f49a913e6 38 //--------------reading data from slave---------------------------------------------------------------
viswachaitanya 0:a39f49a913e6 39 while(loopvariable3)
viswachaitanya 0:a39f49a913e6 40 {
viswachaitanya 0:a39f49a913e6 41 master.frequency(100000); //set clock frequency
viswachaitanya 0:a39f49a913e6 42 master.start(); //initiate data transfer
viswachaitanya 0:a39f49a913e6 43 acknowledge1 = (bool) master.write(addr | 0x01); //addressing the slave to read
viswachaitanya 0:a39f49a913e6 44
viswachaitanya 0:a39f49a913e6 45 if(acknowledge1) //proceedong only if slae is addressed
viswachaitanya 0:a39f49a913e6 46 {
viswachaitanya 0:a39f49a913e6 47 loopvariable3 = false;
viswachaitanya 0:a39f49a913e6 48 while(loopvariable2<8)
viswachaitanya 0:a39f49a913e6 49 {
viswachaitanya 0:a39f49a913e6 50 Sensor.voltage[loopvariable2] = receive_byte(); //receiving data if acknowledged
viswachaitanya 0:a39f49a913e6 51 printf(" voltage%d = %x\n",loopvariable2,Sensor.voltage[loopvariable2]);
viswachaitanya 0:a39f49a913e6 52
viswachaitanya 0:a39f49a913e6 53 Sensor.current[loopvariable2] = receive_byte(); //receiving data if acknowledged
viswachaitanya 0:a39f49a913e6 54 printf(" current%d = %x\n",loopvariable2, Sensor.current[loopvariable2]);
viswachaitanya 0:a39f49a913e6 55
viswachaitanya 0:a39f49a913e6 56 Sensor.temp[loopvariable2] = receive_byte(); //receiving data if acknowledged
viswachaitanya 0:a39f49a913e6 57 printf(" temperature%d = %x\n",loopvariable2,Sensor.temp[loopvariable2]);
viswachaitanya 0:a39f49a913e6 58
viswachaitanya 0:a39f49a913e6 59 loopvariable2++;
viswachaitanya 0:a39f49a913e6 60
viswachaitanya 0:a39f49a913e6 61 } //while(loopvariable2<30)
viswachaitanya 0:a39f49a913e6 62 }//if(acknowledge1==1)
viswachaitanya 0:a39f49a913e6 63
viswachaitanya 0:a39f49a913e6 64 master.stop();
viswachaitanya 0:a39f49a913e6 65 }//while(loopvariable3)
viswachaitanya 0:a39f49a913e6 66 }//if(acknowledge1==1)
viswachaitanya 0:a39f49a913e6 67 }//if(acknowledge2==1)
viswachaitanya 0:a39f49a913e6 68 }//while(loopvariable1)
viswachaitanya 0:a39f49a913e6 69 printf("done");
viswachaitanya 0:a39f49a913e6 70 }//main
viswachaitanya 0:a39f49a913e6 71
viswachaitanya 0:a39f49a913e6 72
viswachaitanya 0:a39f49a913e6 73 //----------------function to read and return the data received-----------------------------------
viswachaitanya 0:a39f49a913e6 74 char receive_byte()
viswachaitanya 0:a39f49a913e6 75 {
viswachaitanya 0:a39f49a913e6 76
viswachaitanya 0:a39f49a913e6 77 char value;
viswachaitanya 0:a39f49a913e6 78 value = master.read(1);
viswachaitanya 0:a39f49a913e6 79 return(value); //returning the 4 byte floating point number
viswachaitanya 0:a39f49a913e6 80 }
viswachaitanya 0:a39f49a913e6 81
viswachaitanya 0:a39f49a913e6 82
viswachaitanya 0:a39f49a913e6 83