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controller/Scan/SonyNEWS/scan_loop.c
Rowan Decker 1392571bd7 Fix whitespace
Use a consistent standard - Tabs in front for indenting, spaces after for anything else. This way everything stays nice and lined up while also letting users change there prefered indent level. Most of the new files from Haata where already in this format.
2015-03-08 18:40:01 -07:00

231 lines
5.5 KiB
C

/* Copyright (C) 2011,2014 by Jacob Alexander
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
// ----- Includes -----
// Compiler Includes
#include <Lib/ScanLib.h>
// Project Includes
#include <led.h>
#include <print.h>
// Local Includes
#include "scan_loop.h"
// ----- Defines -----
// Pinout Defines
#define SPKR_PORT PORTD
#define SPKR_DDR DDRD
#define SPKR_POS 1
#define POWR_PORT PORTC
#define POWR_DDR DDRC
#define POWR_POS 7
// ----- Macros -----
// ----- Variables -----
// Buffer used to inform the macro processing module which keys have been detected as pressed
volatile uint8_t KeyIndex_Buffer[KEYBOARD_BUFFER];
volatile uint8_t KeyIndex_BufferUsed;
// ----- Functions -----
// Setup
inline void Scan_setup()
{
// Setup the the USART interface for keyboard data input
// Setup baud rate
// 16 MHz / ( 16 * Baud ) = UBRR
// Baud <- 0.10450 ms per bit, thus 1000 / 0.10450 = 9569.4
// Thus UBRR = 104.50
// To deal with the 0.5, setting to double speed, which means UBRR = 209
uint16_t baud = 209; // Max setting of 4095
UBRR1H = (uint8_t)(baud >> 8);
UBRR1L = (uint8_t)baud;
// Enable Double Read Speed
UCSR1A = 0x02;
// Enable the receiver, transitter, and RX Complete Interrupt
UCSR1B = 0x98;
// Set frame format: 8 data, no stop bits or parity
// Asynchrounous USART mode
UCSR1C = 0x06;
// Set Speaker Pin to Pull-Up gives a low-volume click (XXX no other setting does, why?)
SPKR_DDR &= ~(1 << SPKR_POS);
SPKR_PORT |= (1 << SPKR_POS);
// Set Power Pin (I've traced this back to the "Power On" Switch, but I don't really know what it's for)
// Configured as a Pull-up Input - This pin "can" be read as well, it will go to GND when the "Power On" switch is pressed, and will read ~5V otherwise
// XXX Currently not used by the controller
POWR_DDR &= ~(1 << POWR_POS);
POWR_PORT |= (1 << POWR_POS);
// Reset the keyboard before scanning, we might be in a wierd state
scan_resetKeyboard();
}
// Main Detection Loop
// Not needed for the Sony NEWS, this is just a busy loop
inline uint8_t Scan_loop()
{
return 0;
}
void processKeyValue( uint8_t keyValue )
{
// Detect release condition
uint8_t release = keyValue & 0x80;
// Finalize output buffer
// Mask 8th bit
keyValue &= 0x7F;
// Key Release
if ( release )
{
// Check for the released key, and shift the other keys lower on the buffer
uint8_t c;
for ( c = 0; c < KeyIndex_BufferUsed; c++ )
{
// Key to release found
if ( KeyIndex_Buffer[c] == keyValue )
{
// Shift keys from c position
for ( uint8_t k = c; k < KeyIndex_BufferUsed - 1; k++ )
KeyIndex_Buffer[k] = KeyIndex_Buffer[k + 1];
// Decrement Buffer
KeyIndex_BufferUsed--;
break;
}
}
// Error case (no key to release)
if ( c == KeyIndex_BufferUsed + 1 )
{
errorLED( 1 );
char tmpStr[6];
hexToStr( keyValue, tmpStr );
erro_dPrint( "Could not find key to release: ", tmpStr );
}
}
// Press or Repeated Key
else
{
// Make sure the key isn't already in the buffer
for ( uint8_t c = 0; c < KeyIndex_BufferUsed + 1; c++ )
{
// Key isn't in the buffer yet
if ( c == KeyIndex_BufferUsed )
{
Macro_bufferAdd( keyValue );
break;
}
// Key already in the buffer
if ( KeyIndex_Buffer[c] == keyValue )
break;
}
}
}
// USART Receive Buffer Full Interrupt
ISR(USART1_RX_vect)
{
cli(); // Disable Interrupts
uint8_t keyValue = 0x00;
// One scancode at a time (fastest interval ~3.95 ms - recorded, should still be ok for interrupt polling)
// Read the raw packet from the USART
keyValue = UDR1;
// Debug
char tmpStr[6];
hexToStr( keyValue, tmpStr );
dPrintStrs( tmpStr, " " );
// Process the scancode
if ( keyValue != 0x00 )
processKeyValue( keyValue );
sei(); // Re-enable Interrupts
}
// Send data to keyboard
uint8_t Scan_sendData( uint8_t dataPayload )
{
// Debug
char tmpStr[6];
hexToStr( dataPayload, tmpStr );
info_dPrint( tmpStr, " " );
UDR1 = dataPayload;
return 0;
}
// Signal KeyIndex_Buffer that it has been properly read
// Not needed as a signal is sent to remove key-presses
void Scan_finishedWithBuffer( uint8_t sentKeys )
{
return;
}
// Reset/Hold keyboard TODO
// Warning! This will cause the keyboard to not send any data, so you can't disable with a keypress
void Scan_lockKeyboard( void )
{
}
void Scan_unlockKeyboard( void )
{
}
// Reset Keyboard
void Scan_resetKeyboard( void )
{
// Empty buffer, now that keyboard has been reset
KeyIndex_BufferUsed = 0;
}
void Scan_finishedWithUSBBuffer( uint8_t sentKeys )
{
return;
}