Sarahi Moran / Mbed 2 deprecated Ejerc_slave_I2c

Salve 12c

Dependencies:   KL25Z_I2C_busreset mbed

main.cpp@0:72b6af395c85, 2014-09-23 (annotated)

Committer:
Sarahi
Date:
Tue Sep 23 20:49:02 2014 +0000
Revision:
0:72b6af395c85
Slave I2c

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Sarahi 0:72b6af395c85 1 #include "mbed.h"
Sarahi 0:72b6af395c85 2
Sarahi 0:72b6af395c85 3
Sarahi 0:72b6af395c85 4 I2CSlave slave(A5,A4); //Configure I2C slave
Sarahi 0:72b6af395c85 5
Sarahi 0:72b6af395c85 6 DigitalOut red_led(LED_RED); //red led
Sarahi 0:72b6af395c85 7 DigitalOut green_led(LED_GREEN); //green led
Sarahi 0:72b6af395c85 8 DigitalIn switch_ip1(SW2);
Sarahi 0:72b6af395c85 9 DigitalIn switch_ip2(SW3);
Sarahi 0:72b6af395c85 10
Sarahi 0:72b6af395c85 11 char switch_word ; //word we will send
Sarahi 0:72b6af395c85 12 char recd_val; //value received from master
Sarahi 0:72b6af395c85 13
Sarahi 0:72b6af395c85 14 int main() {
Sarahi 0:72b6af395c85 15
Sarahi 0:72b6af395c85 16 slave.address(0x52);
Sarahi 0:72b6af395c85 17 while (1) {
Sarahi 0:72b6af395c85 18 //set up switch_word from switches that are pressed
Sarahi 0:72b6af395c85 19 switch_word=0xa0; //set up a recognisable output pattern
Sarahi 0:72b6af395c85 20 if (switch_ip1==0)
Sarahi 0:72b6af395c85 21 switch_word=switch_word|0x01;
Sarahi 0:72b6af395c85 22 if (switch_ip2==0)
Sarahi 0:72b6af395c85 23 switch_word=switch_word|0x02;
Sarahi 0:72b6af395c85 24 slave.write(switch_word); //load up word to send
Sarahi 0:72b6af395c85 25
Sarahi 0:72b6af395c85 26 //test for I2C, and act accordingly
Sarahi 0:72b6af395c85 27 int i = slave.receive();
Sarahi 0:72b6af395c85 28 printf ("%d\n\r" ,i);
Sarahi 0:72b6af395c85 29 if (i == 3) //slave is addressed, Master will write
Sarahi 0:72b6af395c85 30 recd_val= slave.read();
Sarahi 0:72b6af395c85 31 //now set leds according to received word
Sarahi 0:72b6af395c85 32 red_led=1;
Sarahi 0:72b6af395c85 33 green_led=1;
Sarahi 0:72b6af395c85 34 recd_val=recd_val&0x03;
Sarahi 0:72b6af395c85 35 if (recd_val==1)
Sarahi 0:72b6af395c85 36 red_led=0;
Sarahi 0:72b6af395c85 37 if (recd_val==2)
Sarahi 0:72b6af395c85 38 green_led=0;
Sarahi 0:72b6af395c85 39 if (recd_val==3){
Sarahi 0:72b6af395c85 40 red_led=0;
Sarahi 0:72b6af395c85 41 green_led=0;
Sarahi 0:72b6af395c85 42 }
Sarahi 0:72b6af395c85 43 } //end of while
Sarahi 0:72b6af395c85 44 } //end of main