Martin Wolker
/
TSCZ_TriggerNiNo
LVTTL HW Trigger with control via virtual Serial over USB. Works well with NUCLEO boards.
main.cpp@0:46a9ecc2d2b8, 2016-01-22 (annotated)
- Committer:
- Neolker
- Date:
- Fri Jan 22 10:33:36 2016 +0000
- Revision:
- 0:46a9ecc2d2b8
- Child:
- 1:26ff6101d6d5
final release
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Neolker | 0:46a9ecc2d2b8 | 1 | /* |
Neolker | 0:46a9ecc2d2b8 | 2 | * --------------- |
Neolker | 0:46a9ecc2d2b8 | 3 | * TriggerNiNo 1.0 |
Neolker | 0:46a9ecc2d2b8 | 4 | * --------------- |
Neolker | 0:46a9ecc2d2b8 | 5 | * |
Neolker | 0:46a9ecc2d2b8 | 6 | * LVTTL HW Trigger with control via virtual Serial over USB. |
Neolker | 0:46a9ecc2d2b8 | 7 | * Works well with NUCLEO-F031K6 and NUCLEO-F411RE. |
Neolker | 0:46a9ecc2d2b8 | 8 | * |
Neolker | 0:46a9ecc2d2b8 | 9 | * Copyright (C) <2015> Martin Wolker <neolker@gmail.com> |
Neolker | 0:46a9ecc2d2b8 | 10 | * |
Neolker | 0:46a9ecc2d2b8 | 11 | * TriggerNiNo is free software: you can redistribute it and/or modify |
Neolker | 0:46a9ecc2d2b8 | 12 | * it under the terms of the GNU General Public License as published by |
Neolker | 0:46a9ecc2d2b8 | 13 | * the Free Software Foundation, either version 3 of the License, or |
Neolker | 0:46a9ecc2d2b8 | 14 | * (at your option) any later version. |
Neolker | 0:46a9ecc2d2b8 | 15 | * |
Neolker | 0:46a9ecc2d2b8 | 16 | * You should have received a copy of the GNU General Public License |
Neolker | 0:46a9ecc2d2b8 | 17 | * If not, see <http://www.gnu.org/licenses/>. |
Neolker | 0:46a9ecc2d2b8 | 18 | */ |
Neolker | 0:46a9ecc2d2b8 | 19 | |
Neolker | 0:46a9ecc2d2b8 | 20 | #include "mbed.h" //mbed official library. |
Neolker | 0:46a9ecc2d2b8 | 21 | #define TRIGGER_PULSE_LENGTH_MS 500 //Length of the trigger pulse in ms. |
Neolker | 0:46a9ecc2d2b8 | 22 | |
Neolker | 0:46a9ecc2d2b8 | 23 | Serial pc(USBTX, USBRX); //Virtual Serial over USB with 9600 baud. |
Neolker | 0:46a9ecc2d2b8 | 24 | DigitalOut trigger_output_positive(D2); //Declaration of positive trigger output. |
Neolker | 0:46a9ecc2d2b8 | 25 | DigitalOut trigger_output_negative(D3); //Declaration of negative trigger output. |
Neolker | 0:46a9ecc2d2b8 | 26 | DigitalOut trigger_indication(LED1); //Declaration of indication LED. |
Neolker | 0:46a9ecc2d2b8 | 27 | |
Neolker | 0:46a9ecc2d2b8 | 28 | void trigger(void) |
Neolker | 0:46a9ecc2d2b8 | 29 | { |
Neolker | 0:46a9ecc2d2b8 | 30 | trigger_output_positive =! trigger_output_positive; //Change the state of the positive output. |
Neolker | 0:46a9ecc2d2b8 | 31 | trigger_output_negative =! trigger_output_negative; //Change the state of the negative output. |
Neolker | 0:46a9ecc2d2b8 | 32 | trigger_indication =! trigger_indication; //Change the state of the indication LED. |
Neolker | 0:46a9ecc2d2b8 | 33 | } |
Neolker | 0:46a9ecc2d2b8 | 34 | |
Neolker | 0:46a9ecc2d2b8 | 35 | void interrupt(void) |
Neolker | 0:46a9ecc2d2b8 | 36 | { |
Neolker | 0:46a9ecc2d2b8 | 37 | pc.getc(); //Get the character from the buffer and clear. |
Neolker | 0:46a9ecc2d2b8 | 38 | trigger(); //Trigger ON. |
Neolker | 0:46a9ecc2d2b8 | 39 | wait_ms(TRIGGER_PULSE_LENGTH_MS); //Waiting when the trigger pulse is ON. |
Neolker | 0:46a9ecc2d2b8 | 40 | trigger(); //Trigger OFF. |
Neolker | 0:46a9ecc2d2b8 | 41 | } |
Neolker | 0:46a9ecc2d2b8 | 42 | |
Neolker | 0:46a9ecc2d2b8 | 43 | int main(void) |
Neolker | 0:46a9ecc2d2b8 | 44 | { |
Neolker | 0:46a9ecc2d2b8 | 45 | pc.attach(&interrupt); //Call the interrupt, when any data are received from PC. |
Neolker | 0:46a9ecc2d2b8 | 46 | trigger_output_positive = 0; //Initial state of positive output in idle state. |
Neolker | 0:46a9ecc2d2b8 | 47 | trigger_output_negative = 1; //Initial state of negative output in idle state. |
Neolker | 0:46a9ecc2d2b8 | 48 | trigger_indication = 0; //Initial state of LED in idle state is OFF. |
Neolker | 0:46a9ecc2d2b8 | 49 | while(1) {} //Infinity loop. |
Neolker | 0:46a9ecc2d2b8 | 50 | } |