Diff: main.cpp

Revision:

0:3d07e16d44b2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Mar 17 08:14:43 2017 +0000
@@ -0,0 +1,153 @@
+/*CONFIGURACION MAESTRO
+Mediante las palancas(1,2,3) seleccionamos el modo de comunicacion
+La cuarta palanca sirve para hacer un or con 1 o 2 al uart
+SPI y uart estan preparados para 10 segundos de demo mediante timer
+SPI Maestro transmite la lectura del sensor de temperatura conectado a l pin 20
+al equipo esclavo
+
+*/
+#include "mbed.h"
+#include "TextLCD.h"
+TextLCD lcd(p21, p22, p23, p24, p25, p26); // rs, rw, d4, d5, d6, d7
+//------CONFIGURACION PINES DE TR/RE-----------------
+SPI ser_port(p5, p6, p7); //mosi, miso, sclk
+I2C i2c_port(p9, p10);//SDA,SCL
+Serial async_port(p13, p14); //CAMBIADOS AL 13 Y 14///set up TX and RX on pins 28 and 27
+//-------CONFIGURACION LEDS--------------------------------
+DigitalOut red_led(p19); //red led
+DigitalOut green_led(p28); //green led
+DigitalOut strobe(p11); //a strobe to trigger the scope
+DigitalOut cs(p12); //this acts as “slave select”
+//----------------SELECT SPI----AL P8 DEL ESCLAVO
+DigitalOut selec(p27);//para seleccionar CONECTAR AL PIN8 DEL ESCLAVO
+//-------CONFIGURACION INTERRUPTORES
+DigitalIn pulsa15(p15);//palanca PARA 1 o 2
+InterruptIn buttonp16(p16);//palanca para modos de transmision
+InterruptIn buttonp17(p17);
+InterruptIn buttonp18(p18);
+//---------VAARIABLE CONVERSION VOLTAJE
+float milivolts;
+//-----Entrada termometro
+AnalogIn tem(p20);
+//---------TIMER-------------------------
+Timer t2; // define Timer with name “t”
+//-------CARACTERES DE INTERCAMBIO
+char switch_word ; //word we will send
+char recd_val; //value return from slave
+const int addr = 0x52; //the I2C slave address, an arbitrary even number <-- ojo con esto
+//--------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("LLega %c \n\r",recd_val);
+        wait(0.5);
+        }//no debe de salir
+    if (recd_val==2)
+      {  green_led=1;
+      lcd.printf("El valor enviado es 2");
+      wait(0.5);}
+    if (recd_val==3){
+        red_led=1;
+        green_led=1;
+        lcd.printf("El valor enviado es 3");
+        wait(0.5);
+                }
+    
+    }
+void i2cpP(){
+     
+     /*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*/
+     lcd.printf("Prueba i2cp");
+        wait(2);
+        lcd.cls();
+        lcd.printf("COMIENZO ");
+   //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);
+        lcd.printf("POST WAIT");
+        //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  <-- ojo con esto
+        recd_val=i2c_port.read(addr); //Read and save the received byte
+        i2c_port.stop(); //force a stop condition
+        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)
+{
+   milivolts = (tem / 1023.0) * 500;// /5000*10
+   cs = 0; //select slave
+        ser_port.write(milivolts);
+        cs = 1;
+   }
+   /*
+    cs = 0; //select slave
+    recd_val=ser_port.write(switch_word); //send switch_word and receive data
+    cs = 1;
+    wait(0.01);
+    //set leds according to incoming word from slave
+    
+    */
+  // 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)
+{
+        strobe =1; //short strobe pulse
+        wait_us(10);
+        strobe=0;
+        // lcd.printf("POST STROBE");
+         wait(2);
+        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("PRECOMPRUEBA");
+          wait(2);
+        comprueba();  
+  // lcd.printf("POSTCOMPRUEBA");
+          wait(2);
+    }
+    t2.stop();//paramos el timer
+    }
+    
+int main() {
+     lcd.printf("Prueba ");
+    async_port.baud(9600); 
+    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
+      buttonp16.rise(&i2cpP);
+      buttonp17.rise(&spiP);
+      buttonp18.rise(&uartP);   
+        
+    }
+    
+    
+}
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