Sarahi Moran
/
Ejercicio_slave_inst
Funciones slave
main.cpp
- Committer:
- Sarahi
- Date:
- 2014-09-06
- Revision:
- 0:a027cfb8ab6b
File content as of revision 0:a027cfb8ab6b:
#include "mbed.h" SPISlave ser_port(D11,D12,D13,D2); // mosi, miso, sclk, ssel DigitalOut red_led(LED_RED); //red led DigitalOut green_led(LED_GREEN); //green led DigitalIn switch_ip1(SW1); DigitalIn switch_ip2(SW3); char switch_word ; //word we will send char recd_val; //value received from master int main() { switch_ip1.mode(PullUp); switch_ip2.mode(PullUp); //default formatting applied while(1) { //set up switch_word from switches that are pressed switch_word=0xa0; //set up a recognisable output pattern if (switch_ip1==0) switch_word=switch_word|0x01; if (switch_ip2==0) switch_word=switch_word|0x02; if(ser_port.receive()) { //test if data transfer has occurred recd_val = ser_port.read(); // Read byte from master ser_port.reply(switch_word); // Make this the next reply } //set leds according to incoming word from slave red_led=1; //preset both to 0 green_led=1; recd_val=recd_val&0x03; //AND out unwanted bits if (recd_val==1) red_led=0; if (recd_val==2) green_led=0; if (recd_val==3){ red_led=0; green_led=0; } } } //now set leds according to received word