Chaitanya Viswa / Mbed 2 deprecated green_all_combined_slave

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Dependencies:   mbed-rtos mbed

Fork of all_combined_week6 by green rosh

slave.cpp@7:5cf19bfdbacd, 2014-07-17 (annotated)

Committer:
viswachaitanya
Date:
Thu Jul 17 11:22:41 2014 +0000
Revision:
7:5cf19bfdbacd
Parent:
6:82153349cc9b 
i2c test slave

Who changed what in which revision?

UserRevisionLine numberNew contents of line
harshit_felicity 0:cbe0ea884289 1 #include "slave.h"
viswachaitanya 7:5cf19bfdbacd 2
viswachaitanya 7:5cf19bfdbacd 3 int acknowledge;
viswachaitanya 7:5cf19bfdbacd 4 int loopvariable4;
viswachaitanya 7:5cf19bfdbacd 5 SensorData Sensor;
harshit_felicity 0:cbe0ea884289 6 I2CSlave slave(p28,p27); //configuring pins p27, p28 as I2Cslave
greenroshks 3:9b597ed04ef4 7 Serial screen (USBTX,USBRX);
harshit_felicity 0:cbe0ea884289 8 void write_to_master(char send) //function to write data to master
harshit_felicity 0:cbe0ea884289 9 {
viswachaitanya 7:5cf19bfdbacd 10
viswachaitanya 7:5cf19bfdbacd 11 loopvariable4=1;
greenroshks 3:9b597ed04ef4 12 while(loopvariable4)
greenroshks 3:9b597ed04ef4 13 {
harshit_felicity 0:cbe0ea884289 14 acknowledge = slave.write(send); //sending the byte to master
harshit_felicity 0:cbe0ea884289 15 if(acknowledge==1)
harshit_felicity 0:cbe0ea884289 16 {
greenroshks 6:82153349cc9b 17 screen.printf(" acknowledge %d sent %u \n",acknowledge,send);
greenroshks 3:9b597ed04ef4 18 loopvariable4=0;
harshit_felicity 0:cbe0ea884289 19 }
greenroshks 3:9b597ed04ef4 20 }
harshit_felicity 0:cbe0ea884289 21 }
harshit_felicity 0:cbe0ea884289 22
greenroshks 3:9b597ed04ef4 23
greenroshks 3:9b597ed04ef4 24
greenroshks 3:9b597ed04ef4 25
greenroshks 3:9b597ed04ef4 26 void FUNC_I2C_SLAVE_MAIN(int iterations)
harshit_felicity 0:cbe0ea884289 27 {
viswachaitanya 7:5cf19bfdbacd 28 slave.address(slave_address); //assigning slave address
viswachaitanya 7:5cf19bfdbacd 29 char Switch_Variable;
viswachaitanya 7:5cf19bfdbacd 30 slave.stop();
viswachaitanya 7:5cf19bfdbacd 31 Sensor.voltage[0]='a';Sensor.current[0]='1';Sensor.temp[0]='k';
viswachaitanya 7:5cf19bfdbacd 32 Sensor.voltage[1]='b';Sensor.current[1]='2';Sensor.temp[1]='l';
viswachaitanya 7:5cf19bfdbacd 33 Sensor.voltage[2]='c';Sensor.current[2]='3';Sensor.temp[2]='m';
viswachaitanya 7:5cf19bfdbacd 34 Sensor.voltage[3]='d';Sensor.current[3]='4';Sensor.temp[3]='n';
viswachaitanya 7:5cf19bfdbacd 35 Sensor.voltage[4]='e';Sensor.current[4]='5';Sensor.temp[4]='o';
viswachaitanya 7:5cf19bfdbacd 36 Sensor.voltage[5]='f';Sensor.current[5]='1';Sensor.temp[5]='p';
viswachaitanya 7:5cf19bfdbacd 37 Sensor.voltage[6]='g';Sensor.current[6]='2';Sensor.temp[6]='q';
viswachaitanya 7:5cf19bfdbacd 38 Sensor.voltage[7]='h';Sensor.current[7]='3';Sensor.temp[7]='r';
greenroshks 6:82153349cc9b 39
greenroshks 3:9b597ed04ef4 40 screen.printf("\nSlave entered\n");
viswachaitanya 7:5cf19bfdbacd 41
viswachaitanya 7:5cf19bfdbacd 42
greenroshks 3:9b597ed04ef4 43
greenroshks 3:9b597ed04ef4 44
harshit_felicity 0:cbe0ea884289 45 int loopvariable1=1;
harshit_felicity 0:cbe0ea884289 46 int loopvariable2=0;
greenroshks 3:9b597ed04ef4 47 int loopvariable3=1;
harshit_felicity 0:cbe0ea884289 48 //initialising dummy sensor data
greenroshks 3:9b597ed04ef4 49
harshit_felicity 0:cbe0ea884289 50 while(loopvariable1)
harshit_felicity 0:cbe0ea884289 51 {
harshit_felicity 0:cbe0ea884289 52 //to read data from master
harshit_felicity 0:cbe0ea884289 53 if(slave.receive()==WriteGeneral) //checking if slave is addressed to write
harshit_felicity 0:cbe0ea884289 54 {
harshit_felicity 0:cbe0ea884289 55 Switch_Variable=slave.read(); //receiving data
greenroshks 3:9b597ed04ef4 56 screen.printf("switch variable=%d\n",Switch_Variable);
harshit_felicity 0:cbe0ea884289 57 slave.stop(); //reset slave to default receiving state
harshit_felicity 0:cbe0ea884289 58 loopvariable1=0;
harshit_felicity 0:cbe0ea884289 59 //to interpret and write data to master
harshit_felicity 0:cbe0ea884289 60 switch(Switch_Variable)
harshit_felicity 0:cbe0ea884289 61 {
greenroshks 6:82153349cc9b 62
greenroshks 6:82153349cc9b 63
greenroshks 6:82153349cc9b 64 case 1: printf("\nEntered switch\n");
greenroshks 6:82153349cc9b 65 while(loopvariable3)
greenroshks 3:9b597ed04ef4 66 {
harshit_felicity 0:cbe0ea884289 67 if(slave.receive()==ReadAddressed) //check if slave is addressed to read
harshit_felicity 0:cbe0ea884289 68 {
greenroshks 3:9b597ed04ef4 69 while(loopvariable2<iterations)
greenroshks 3:9b597ed04ef4 70 {
harshit_felicity 0:cbe0ea884289 71 if(loopvariable2%3==0)
harshit_felicity 0:cbe0ea884289 72 {
greenroshks 3:9b597ed04ef4 73 screen.printf("\nvoltage%d\n",loopvariable2/3);
viswachaitanya 7:5cf19bfdbacd 74 write_to_master(Sensor.voltage[loopvariable2/3]);
harshit_felicity 0:cbe0ea884289 75 }
harshit_felicity 0:cbe0ea884289 76 else if(loopvariable2%3==1)
harshit_felicity 0:cbe0ea884289 77 {
greenroshks 3:9b597ed04ef4 78 screen.printf("\ncurrent%d\n",loopvariable2/3);
viswachaitanya 7:5cf19bfdbacd 79 write_to_master(Sensor.current[loopvariable2/3]);
harshit_felicity 0:cbe0ea884289 80 }
harshit_felicity 0:cbe0ea884289 81 else if(loopvariable2%3==2)
harshit_felicity 0:cbe0ea884289 82 {
greenroshks 3:9b597ed04ef4 83 screen.printf("\ntemp%d\n",loopvariable2/3);
viswachaitanya 7:5cf19bfdbacd 84 write_to_master(Sensor.temp[loopvariable2/3]);
harshit_felicity 0:cbe0ea884289 85 }
harshit_felicity 0:cbe0ea884289 86 loopvariable2++;
greenroshks 3:9b597ed04ef4 87 }//while(loopvariable2<30)
greenroshks 6:82153349cc9b 88 printf("\nExited i2c while loop\n");
greenroshks 3:9b597ed04ef4 89 slave.stop();
greenroshks 3:9b597ed04ef4 90 loopvariable3=0;
greenroshks 3:9b597ed04ef4 91 }//if(read addressed)
greenroshks 3:9b597ed04ef4 92
greenroshks 3:9b597ed04ef4 93 }//while(loopvariable3)
greenroshks 3:9b597ed04ef4 94
harshit_felicity 0:cbe0ea884289 95 break;
greenroshks 6:82153349cc9b 96 case 2 : screen.printf(" telecommand 2\n");
harshit_felicity 0:cbe0ea884289 97 break;
harshit_felicity 0:cbe0ea884289 98
harshit_felicity 0:cbe0ea884289 99 }//switch case ends
harshit_felicity 0:cbe0ea884289 100 }
harshit_felicity 0:cbe0ea884289 101 }
viswachaitanya 7:5cf19bfdbacd 102
greenroshks 6:82153349cc9b 103 screen.printf("\nexited slave function\n");
harshit_felicity 0:cbe0ea884289 104 }
greenroshks 3:9b597ed04ef4 105