Diff: main.cpp

Revision:

0:5285a0479338

diff -r 000000000000 -r 5285a0479338 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Mar 17 08:16:29 2017 +0000
@@ -0,0 +1,150 @@
+
+/*CONFIGURACION SLAVE*
+/*Remember, you will need a pull-up resistor on sda and scl.
+All drivers on the I2C bus are required to be open collector, and 
+so it is necessary for pull up resistors to be used on the two signals.  
+A typical value for the pullup resistors is around 2.2k ohms, 
+connected between the pin and 3v3. https://developer.mbed.org/handbook/I2C*/
+#include "mbed.h"
+#include "TextLCD.h"
+TextLCD lcd(p21, p22, p23, p24, p25, p26); // rs, e, d4, d5, d6, d7
+//------CONFIGURACION PINES DE TR/RE-----------------
+SPISlave ser_port(p5, p6, p7, p8); //mosi, miso, sclk, ssel el p8 al digout del master
+I2CSlave slave(p9, p10); //Configure I2C slave
+Serial async_port(p13, p14); //set up TX and RX on pins 28 and 27
+//-------CONFIGURACION LEDS--------------------------------
+DigitalOut red_led(p19); //red led
+DigitalOut green_led(p28); //green led OJO    
+DigitalOut strobe(p11); //a strobe to trigger the scope
+DigitalOut cs(p12); //this acts as “slave select”
+
+
+//-------CONFIGURACION INTERRUPTORES
+DigitalIn pulsa15(p15);//palanca PARA 1 o 2
+InterruptIn buttonp16(p16);//palanca para modos de transmision i2c
+InterruptIn buttonp17(p17); //spi
+InterruptIn buttonp18(p18); //uart
+//-------CARACTERES DE INTERCAMBIO
+char switch_word ; //word we will send
+char recd_val; //value return from slave
+//---------VAARIABLE CONVERSION VOLTAJE
+float milivolts;
+//---------TIMER-------------------------
+Timer t2; // define Timer with name “t”
+//--------FUNCIONES------------------
+void comprueba(){
+     red_led=0; //preset both to 0
+    green_led=0;
+    lcd.cls();//limpiamos el charco
+    recd_val=recd_val & 0x03; //AND out unwanted bits
+    if (recd_val==1)
+     {   red_led=1;
+        lcd.printf("El valor  es 1");
+        wait(0.5);
+        }//no debe de salir
+    if (recd_val==2)
+      {  green_led=1;
+      lcd.printf("El valor  es 2");
+      wait(0.5);}
+    if (recd_val==3){
+        red_led=1;
+        green_led=1;
+        lcd.printf("El valor es 3");
+        wait(0.5);
+                }
+    
+    }
+void i2cpP(){
+     lcd.printf("Prueba i2cp");
+        wait(2);
+        lcd.cls();
+  while(1){  
+    slave.write(switch_word); //load up word to send
+        //test for I2C, and act accordingly
+        int i = slave.receive();
+        if (i == 3)
+            { 
+            //slave is addressed, Master will write
+             lcd.printf("entra en if"); 
+      wait(2);
+            recd_val= slave.read();
+            comprueba();
+            }
+    }
+    
+    }
+void spiP(){
+    lcd.printf("Prueba spi");
+        wait(2);
+        lcd.cls();
+        t2.reset();// reseteamos el timer
+        t2.start(); //start the timer
+while(t2.read()<10){
+       if(ser_port.receive()){
+            milivolts=ser_port.read();    
+        }
+        lcd.printf("%1.2f",milivolts);
+        wait(0.05);
+        lcd.cls(); 
+        
+        }
+        /*
+  while(1){  
+    if(ser_port.receive()) { //test if data transfer has occurred
+     lcd.printf("entra en if"); 
+      wait(2);
+            recd_val = ser_port.read(); // Read byte from master
+            ser_port.reply(switch_word); // Make this the next reply
+        comprueba();
+        }
+  */
+    
+    
+    }
+void uartP(){
+    lcd.printf("Prueba uart");
+        wait(2);
+        lcd.cls();
+        t2.reset();// reseteamos el timer
+        t2.start(); //start the timer
+while(t2.read()<10){ // le damos 10 segundos de prueba
+        strobe =1; //short strobe pulse
+        wait_us(10);
+        strobe=0;
+        async_port.putc(switch_word); //transmit switch_word
+        if (async_port.readable()==1) //is there a character to be read?
+        {recd_val=async_port.getc(); //if yes, then read it
+        lcd.printf("entra en if"); 
+        wait(1);
+         lcd.printf("%c \n\r",recd_val);
+          wait(1);
+        comprueba(); }
+        lcd.printf("Postcomprueba"); 
+        wait(1);
+         lcd.cls();
+   
+    }
+    t2.stop();
+    }
+    
+int main() {
+    async_port.baud(9600); 
+    slave.address(0x52);
+    while(1) {
+        switch_word=0xa0; //set up a recognizable output pattern
+    if (pulsa15==1)
+        switch_word=switch_word | 0x01; //OR in lsb
+    if (pulsa15==0)
+        switch_word=switch_word | 0x02; //OR in next lsb
+        
+      //preparados para acceder a los modos de comunicación  
+      buttonp16.rise(&i2cpP);
+      buttonp17.rise(&spiP);
+      buttonp18.rise(&uartP);   
+        
+    }
+     
+    
+    
+    
+}
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