Diff: main.cpp

Revision:

0:46a9ecc2d2b8

Child:

1:26ff6101d6d5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Jan 22 10:33:36 2016 +0000
@@ -0,0 +1,50 @@
+/*
+* ---------------
+* TriggerNiNo 1.0
+* ---------------
+*
+* LVTTL HW Trigger with control via virtual Serial over USB.
+* Works well with NUCLEO-F031K6 and NUCLEO-F411RE.
+*
+* Copyright (C) <2015> Martin Wolker <neolker@gmail.com>
+*
+* TriggerNiNo is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* You should have received a copy of the GNU General Public License
+* If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "mbed.h"                         //mbed official library.
+#define TRIGGER_PULSE_LENGTH_MS   500     //Length of the trigger pulse in ms.
+
+Serial pc(USBTX, USBRX);                  //Virtual Serial over USB with 9600 baud.
+DigitalOut trigger_output_positive(D2);   //Declaration of positive trigger output.
+DigitalOut trigger_output_negative(D3);   //Declaration of negative trigger output.
+DigitalOut trigger_indication(LED1);      //Declaration of indication LED.
+
+void trigger(void)
+{
+    trigger_output_positive =! trigger_output_positive;   //Change the state of the positive output.
+    trigger_output_negative =! trigger_output_negative;   //Change the state of the negative output.
+    trigger_indication =! trigger_indication;             //Change the state of the indication LED.
+}
+
+void interrupt(void)
+{
+    pc.getc();                          //Get the character from the buffer and clear.
+    trigger();                          //Trigger ON.
+    wait_ms(TRIGGER_PULSE_LENGTH_MS);   //Waiting when the trigger pulse is ON.
+    trigger();                          //Trigger OFF.
+}
+
+int main(void)
+{
+    pc.attach(&interrupt);         //Call the interrupt, when any data are received from PC.
+    trigger_output_positive = 0;   //Initial state of positive output in idle state.
+    trigger_output_negative = 1;   //Initial state of negative output in idle state.
+    trigger_indication = 0;        //Initial state of LED in idle state is OFF.
+    while(1) {}                    //Infinity loop.
+}
\ No newline at end of file