LVTTL HW Trigger with control via virtual Serial over USB. Works well with NUCLEO boards.

Dependencies:   mbed

Files at this revision

API Documentation at this revision

Comitter:
Neolker
Date:
Fri Jan 22 10:33:36 2016 +0000
Child:
1:26ff6101d6d5
Commit message:
final release

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed.bld Show annotated file Show diff for this revision Revisions of this file
--- /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
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Fri Jan 22 10:33:36 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/165afa46840b
\ No newline at end of file