Diff: Mmain.cpp

Revision:

3:1bb80997f316

Parent:

2:42d461c96301

--- a/Mmain.cpp	Thu Aug 29 12:35:44 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,45 +0,0 @@
-/*Program Example 7.5: I2C Master, transfers switch state to second mbed acting as slave, and
-displays state of slave’ s switches on its leds.
-*/
-#include "mbed.h"
-I2C i2c_port(p9, p10); //Configure a serial port, pins 9 and 10 are sda, scl
-DigitalOut red_led(LED1); //red led
-DigitalOut green_led(LED2); //green led
-DigitalIn switch_ip1(p5); //input switch
-DigitalIn switch_ip2(p6);
-char switch_word ; //word we will send
-char recd_val; //value received from slave
-const int addr = 0x52; //the I2C slave address, an arbitrary even number
-
-int main() {
-    while(1) {
-        switch_word=0xa0; //set up a recognizable output pattern
-        if (switch_ip1==1)
-            switch_word=switch_word|0x01; //OR in lsb
-        if (switch_ip2==1)
-            switch_word=switch_word|0x02; //OR in next lsb
-        //send a single byte of data, in correct I2C package
-        i2c_port.start(); //force a start condition
-        i2c_port.write(addr); //send the address
-        i2c_port.write(switch_word); //send one byte of data, ie switch_word
-        i2c_port.stop(); //force a stop condition
-        wait(0.002);
-        //receive a single byte of data, in correct I2C package
-        i2c_port.start();
-        i2c_port.write(addr|0x01); //send address, with R/W bit set to Read
-        recd_val=i2c_port.read(addr); //Read and save the received byte
-        i2c_port.stop(); //force a stop condition
-        //set leds according to word received from slave
-        red_led=0; //preset both to 0
-        green_led=0;
-        recd_val=recd_val&0x03; //AND out unwanted bits
-        if (recd_val==1)
-            red_led=1;
-        if (recd_val==2)
-            green_led=1;
-        if (recd_val==3){
-            red_led=1;
-            green_led=1;
-        }
-    }
-}