2519ea00e7
- Typing and modifiers fully working - Still some features left to implement * Stop input * Diagnostic test * Setting interval before starting repeat rate * More comments * Handling LED stats
159 lines
3.6 KiB
C
159 lines
3.6 KiB
C
/* Copyright (C) 2011 by Jacob Alexander
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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// ----- Includes -----
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// AVR Includes
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#include <avr/io.h>
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#include <avr/interrupt.h>
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// Project Includes
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#include <macro.h>
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#include <scan_loop.h>
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#include <usb_com.h>
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#include <led.h>
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#include <print.h>
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// ----- Defines -----
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// Verified Keypress Defines
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#define USB_TRANSFER_DIVIDER 10 // 1024 == 1 Send of keypresses per second, 1 == 1 Send of keypresses per ~1 millisecond
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// ----- Macros -----
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#define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n))
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// ----- Variables -----
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// Timer Interrupt for flagging a send of the sampled key detection data to the USB host
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uint16_t sendKeypressCounter = 0;
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// Flag generated by the timer interrupt
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volatile uint8_t sendKeypresses = 0;
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// ----- Functions -----
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// Initial Pin Setup, make sure they are sane
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inline void pinSetup(void)
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{
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// For each pin, 0=input, 1=output
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#if defined(__AVR_AT90USB1286__)
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DDRA = 0x00;
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#endif
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DDRB = 0x00;
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DDRC = 0x00;
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DDRD = 0x00;
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DDRE = 0x00;
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DDRF = 0x00;
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// Setting pins to either high or pull-up resistor
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#if defined(__AVR_AT90USB1286__)
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PORTA = 0x00;
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#endif
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PORTB = 0x00;
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PORTC = 0x00;
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PORTD = 0x00;
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PORTE = 0x00;
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PORTF = 0x00;
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}
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int main(void)
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{
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// Setup with 16 MHz clock
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CPU_PRESCALE( 0 );
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// Configuring Pins
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pinSetup();
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init_errorLED();
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// Setup USB Module
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usb_setup();
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// Setup ISR Timer for flagging a kepress send to USB
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// Set to 256 * 1024 (8 bit timer with Clock/1024 prescalar) timer
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TCCR0A = 0x00;
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TCCR0B = 0x03;
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TIMSK0 = (1 << TOIE0);
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// Main Detection Loop
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uint8_t ledTimer = 15; // Enable LED for a short time
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while ( 1 )
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{
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// Setup the scanning module
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scan_setup();
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while ( 1 )
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{
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// Acquire Key Indices
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// Loop continuously until scan_loop returns 0
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cli();
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while ( scan_loop() );
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sei();
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// Run Macros over Key Indices and convert to USB Keys
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process_macros();
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// Send keypresses over USB if the ISR has signalled that it's time
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if ( !sendKeypresses )
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continue;
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// Send USB Data
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usb_send();
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// Clear sendKeypresses Flag
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sendKeypresses = 0;
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// Indicate Error, if valid
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errorLED( ledTimer );
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if ( ledTimer > 0 )
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ledTimer--;
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}
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// Loop should never get here (indicate error)
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ledTimer = 255;
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// HID Debug Error message
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erro_print("Detection loop error, this is very bad...bug report!");
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}
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}
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// USB Keyboard Data Send Counter Interrupt
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ISR( TIMER0_OVF_vect )
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{
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sendKeypressCounter++;
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if ( sendKeypressCounter > USB_TRANSFER_DIVIDER ) {
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sendKeypressCounter = 0;
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sendKeypresses = 1;
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}
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}
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