new hardware support: IBM Host keyboard
This commit is contained in:
parent
09cfed5034
commit
9fe5ef9a4e
@ -10,9 +10,10 @@
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AVRDUDE = avrdude -p atmega32 -c usbasp
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AVRDUDE = avrdude -p atmega32 -c usbasp
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# Options:
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# Options:
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HWOBJECTS = modelibmmodelm.o
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#HWOBJECTS = modelibmmodelm.o
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#HWOBJECTS = modelmayhem.o
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#HWOBJECTS = modelmayhem.o
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#HWOBJECTS = modelsuntype5.o
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#HWOBJECTS = modelsuntype5.o
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HWOBJECTS = modelibmhost.o
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COMPILE = avr-gcc -Wall -Os -Iusbdrv -I. -mmcu=atmega32 -DF_CPU=12000000L $(DEFINES)
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COMPILE = avr-gcc -Wall -Os -Iusbdrv -I. -mmcu=atmega32 -DF_CPU=12000000L $(DEFINES)
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313
firmware/modelibmhost.c
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313
firmware/modelibmhost.c
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/**
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* \file firmware/modelibmmodelm.c
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* \brief Hardware specific part for IBM Host keyboard
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* \author Ronald Schaten <ronald@schatenseite.de>
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* \version $Id: modelibmmodelm.c 173 2009-02-14 21:11:43Z rschaten $
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*
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* License: GNU GPL v2 (see License.txt)
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*/
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#include <avr/io.h>
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#include <avr/pgmspace.h>
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#include <util/delay.h>
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#include <string.h>
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#include <stdio.h>
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#include "keycodes.h"
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#include "tools.h"
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#include "modelinterface.h"
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/* ----------------------- hardware I/O abstraction ------------------------ */
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#define PORTCOLUMNS PORTB ///< port on which we read the state of the columns
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#define PINCOLUMNS PINB ///< port on which we read the state of the columns
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#define DDRCOLUMNS DDRB ///< port on which we read the state of the columns
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#define PORTROWS1 PORTA ///< first port connected to the matrix rows
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#define PINROWS1 PINA ///< first port connected to the matrix rows
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#define DDRROWS1 DDRA ///< first port connected to the matrix rows
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#define PORTROWS2 PORTC ///< second port connected to the matrix rows
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#define PINROWS2 PINC ///< second port connected to the matrix rows
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#define DDRROWS2 DDRC ///< second port connected to the matrix rows
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#define PORTROWS3 PORTD ///< third port connected to the matrix rows
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#define PINROWS3 PIND ///< third port connected to the matrix rows
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#define DDRROWS3 DDRD ///< third port connected to the matrix rows
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uint8_t curmatrix[20]; ///< contains current state of the keyboard
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uint8_t oldmatrix[20]; ///< contains old state of the keyboard
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uint8_t ghostmatrix[20]; ///< contains pressed keys that belong to a ghost-key situation
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void hardwareInit(void) {
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// column-port is input
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PORTCOLUMNS = 0xff;
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DDRCOLUMNS = 0x00;
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// row-ports are output
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PORTROWS1 = 0xff;
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DDRROWS1 = 0x00;
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PORTROWS2 = 0xff;
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DDRROWS2 = 0x00;
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PORTROWS3 |= ((1 << PIND4) | (1 << PIND5) | (1 << PIND6) | (1 << PIND7));
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DDRROWS3 &= ~((1 << PIND4) | (1 << PIND5) | (1 << PIND6) | (1 << PIND7));
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// port D contains USB (D0, D2),
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// and keyboard rows (D4, D5, D6, D7).
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// so we call it PORTD instead of PORTJUMPERS or PORTLEDS
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PORTD &= ~((1 << PIND0) | (1 << PIND2)); // deactivate pull-ups on USB-lines
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DDRD |= ((1 << PIND0) | (1 << PIND2)); // set reset USB condition.
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// USB reset by device only required on watchdog reset
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_delay_us(11); // delay >10us for USB reset
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DDRD &= ~((1 << PIND0) | (1 << PIND2)); // remove USB reset condition
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// configure timer 0 for a rate of 12M/(1024 * 256) = 45.78Hz (~22ms)
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TCCR0 = 5; // timer 0 prescaler: 1024
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}
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/**
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* Print the current state of the keyboard in a readable form. This function
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* is used for debug-purposes only.
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*/
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void printMatrix(void) {
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for (uint8_t i = 0; i <= 19; i++) {
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char buffer[10];
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/*
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sprintf(buffer, "%d%d%d%d%d%d%d%d.",
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(curmatrix[i] & (1 << 0) ? 1 : 0),
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(curmatrix[i] & (1 << 1) ? 1 : 0),
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(curmatrix[i] & (1 << 2) ? 1 : 0),
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(curmatrix[i] & (1 << 3) ? 1 : 0),
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(curmatrix[i] & (1 << 4) ? 1 : 0),
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(curmatrix[i] & (1 << 5) ? 1 : 0),
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(curmatrix[i] & (1 << 6) ? 1 : 0),
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(curmatrix[i] & (1 << 7) ? 1 : 0));
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*/
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sprintf(buffer, "%2x", curmatrix[i]);
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sendString(buffer);
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if ((i == 7) || (i == 15)) {
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sendString(":");
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} else {
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sendString(".");
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}
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}
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sendString("---");
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}
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void toggle(void) {
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// not used in this model/version
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}
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void setSpeed(uint8_t speed) {
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// not used in this model/version
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}
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void setLeds(uint8_t LEDstate) {
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// do nothing, since we don't have fancy lights on this hardware
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}
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/**
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* The keymatrix-array contains positions of keys in the matrix. Here you can
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* see which row is connected to which column when a key is pressed. This array
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* probably has to be modified if this firmware is ported to a different
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* keyboard.
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* \sa modmatrix
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*/
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const uint8_t PROGMEM keymatrix[20][8] = {
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// 0 / 0x01 1 / 0x02 2 / 0x04 3 / 0x08 4 / 0x10 5 / 0x20 6 / 0x40 7 / 0x80
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{KEY_KPenter, KEY_Reserved, KEY_Reserved, KEY_Reserved, KEY_Reserved, KEY_Reserved, KEY_RightArrow, KEY_Application }, // 0
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{KEY_KPcomma, KEY_KP3, KEY_Reserved, KEY_KP9, KEY_Reserved, KEY_KPslash, KEY_KP6, KEY_Reserved }, // 1
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{KEY_KP0, KEY_KP2, KEY_Reserved, KEY_KP8, KEY_Home, KEY_KPequals, KEY_KP5, KEY_Reserved }, // 2
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{KEY_Reserved, KEY_Reserved, KEY_End, KEY_PageDown, KEY_Insert, KEY_PageUp, KEY_DeleteForward, KEY_UpArrow }, // 3
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{KEY_Reserved, KEY_Return, KEY_Reserved, KEY_KP7, KEY_DELETE, KEY_KPBackspace, KEY_KP4, KEY_DownArrow }, // 4
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{KEY_slash, KEY_hash, KEY_lbracket, KEY_P, KEY_minus, KEY_0, KEY_semicolon, KEY_apostroph }, // 5
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{KEY_Reserved, KEY_dot, KEY_Reserved, KEY_O, KEY_Reserved, KEY_9, KEY_L, KEY_Reserved }, // 6
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{KEY_Reserved, KEY_comma, KEY_rbracket, KEY_I, KEY_equals, KEY_8, KEY_K, KEY_Reserved }, // 7
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{KEY_F12, KEY_F11, KEY_F9, KEY_F8, KEY_F6, KEY_F5, KEY_F3, KEY_F2 }, // 8
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{KEY_F24, KEY_F10, KEY_F21, KEY_F7, KEY_F18, KEY_F4, KEY_F15, KEY_F1 }, // 9
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{KEY_F23, KEY_F22, KEY_F20, KEY_F19, KEY_F17, KEY_F16, KEY_F14, KEY_F13 }, // 10
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{KEY_N, KEY_M, KEY_Z, KEY_U, KEY_6, KEY_7, KEY_J, KEY_H }, // 11
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{KEY_B, KEY_V, KEY_T, KEY_R, KEY_5, KEY_4, KEY_F, KEY_G }, // 12
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{KEY_Reserved, KEY_C, KEY_Reserved, KEY_E, KEY_Reserved, KEY_3, KEY_D, KEY_Reserved }, // 13
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{KEY_Reserved, KEY_X, KEY_Reserved, KEY_W, KEY_Reserved, KEY_2, KEY_S, KEY_Reserved }, // 14
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{KEY_Euro, KEY_Y, KEY_Reserved, KEY_Q, KEY_grave, KEY_1, KEY_A, KEY_Reserved }, // 15
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{KEY_Reserved, KEY_Reserved, KEY_Reserved, KEY_Reserved, KEY_Reserved, KEY_Reserved, KEY_Reserved, KEY_Reserved }, // 16
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{KEY_Reserved, KEY_capslock, KEY_Copy, KEY_Tab, KEY_Again, KEY_Reserved, KEY_Paste, KEY_Find }, // 17
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{KEY_Spacebar, KEY_KP1, KEY_Execute, KEY_Undo, KEY_Stop, KEY_Menu, KEY_Select, KEY_Cut }, // 18
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{KEY_Reserved, KEY_LeftArrow, KEY_Reserved, KEY_KPminus, KEY_Reserved, KEY_KPasterisk, KEY_KPplus, KEY_Reserved }, // 19
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};
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/**
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* The modmatrix-array contains positions of the modifier-keys in the matrix.
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* It is built in the same way as the keymatrix-array.
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* \sa keymatrix
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*/
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const uint8_t PROGMEM modmatrix[20][8] = { // contains positions of modifiers in the matrix
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// 0 1 2 3 4 5 6 7
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{MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE }, // 0
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{MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE }, // 1
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{MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE }, // 2
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{MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE }, // 3
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{MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE }, // 4
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{MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE }, // 5
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{MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE }, // 6
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{MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE }, // 7
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{MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE }, // 8
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{MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE }, // 9
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{MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE }, // 10
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{MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE }, // 11
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{MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE }, // 12
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{MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE }, // 13
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{MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE }, // 14
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{MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE }, // 15
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{MOD_SHIFT_LEFT, MOD_SHIFT_RIGHT, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_ALT_RIGHT }, // 16
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{MOD_CONTROL_RIGHT, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE }, // 17
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{MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE }, // 18
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{MOD_ALT_LEFT, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_NONE, MOD_CONTROL_LEFT }, // 19
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};
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/**
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* Checks if more than one bit in data is set.
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* \param data value to check
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* \return true if more than one bit is set
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*/
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static uint8_t bitcount2(uint16_t data) {
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data &= (data - 1);
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return data != 0;
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}
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/**
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* check if reportBuffer contains the key
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* \param buffer buffer to check
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* \param key key to search
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* \return 1 if buffer contains key, 0 otherwise
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*/
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static uint8_t bufferContains(uint8_t* buffer, uint8_t key) {
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for (uint8_t i = 2; i < sizeof(buffer); i++) {
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if (buffer[i] == key) {
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return 1;
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}
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}
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return 0;
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}
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/**
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* Scan and debounce keypresses. This is the main worker function for normal
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* keyboard operation, the code contains lot of comments. Basically, it first
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* scans the keyboard state. If a change is detected, it initializes a counter
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* that is decreased each time this function is called. If the counter reaches
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* 1, that means that the same scan result has been scanned ten times in a row,
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* so we can be pretty sure that the keys are in a certain state (as in: not
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* bouncing). Then, the codes for keys and modifiers are searched from the two
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* arrays, the USB-message to send the state is prepared. The return value of
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* this function indicates if the message has to be sent.
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* \return flag to indicate whether something has changed
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*/
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uint8_t scankeys(uint8_t* reportBuffer, uint8_t* oldReportBuffer, uint8_t sizeOfReportBuffer) {
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static uint8_t debounce = 5;
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uint8_t retval = 0;
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for (uint8_t row = 0; row <= 19; row++) {
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if (row <= 7) {
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DDRROWS1 = (1 << row);
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PORTROWS1 = ~(1 << row);
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DDRROWS2 = 0x00;
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PORTROWS2 = 0xff;
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PORTROWS3 |= ((1 << PIND4) | (1 << PIND5) | (1 << PIND6) | (1 << PIND7));
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DDRROWS3 &= ~((1 << PIND4) | (1 << PIND5) | (1 << PIND6) | (1 << PIND7));
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} else if (row <= 15) {
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DDRROWS1 = 0x00;
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PORTROWS1 = 0xff;
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// (15 - row) looks a bit weird, you would expect (row - 8) here.
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// This is because pins on PORTC are ordered in the other direction
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// than on PORTA. With (15 - row), we have the bytes in the
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// resulting matrix matching the pins of the keyboard connector.
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DDRROWS2 = (1 << (15 - row));
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PORTROWS2 = ~(1 << (15 - row));
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PORTROWS3 |= ((1 << PIND4) | (1 << PIND5) | (1 << PIND6) | (1 << PIND7));
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DDRROWS3 &= ~((1 << PIND4) | (1 << PIND5) | (1 << PIND6) | (1 << PIND7));
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} else {
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DDRROWS1 = 0x00;
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PORTROWS1 = 0xff;
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DDRROWS2 = 0x00;
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PORTROWS2 = 0xff;
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// As if the case above wasn't difficult enough, on PORTD we have
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// to make sure that the scanning doesn't affect USB
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// communications, which occur on PIND0 and PIND2.
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PORTROWS3 |= ((1 << PIND4) | (1 << PIND5) | (1 << PIND6) | (1 << PIND7));
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DDRROWS3 &= ~((1 << PIND4) | (1 << PIND5) | (1 << PIND6) | (1 << PIND7));
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DDRROWS3 |= (1 << (19 - row + 4));
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PORTROWS3 &= ~(1 << (19 - row + 4));
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}
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_delay_us(30);
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uint8_t data = ~PINCOLUMNS;
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// check if we have to prevent ghost-keys
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uint16_t rows = (PINROWS1 << 8) | PINROWS2; // TODO
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if (bitcount2(~rows) && bitcount2(data)) {
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// ghost-key situation detected
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ghostmatrix[row] = data;
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} else {
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ghostmatrix[row] = 0x00;
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}
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if (data != curmatrix[row]) {
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// if a change was detected
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debounce = 10; // activate debounce counter
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curmatrix[row] = data; // and store the result
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}
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}
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if (debounce) {
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// Count down, but avoid underflow
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debounce--;
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}
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if (debounce == 1) {
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/*
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if (memcmp(oldmatrix, curmatrix, sizeof(curmatrix)) != 0) {
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printMatrix();
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memcpy(oldmatrix, curmatrix, sizeof(curmatrix));
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return 0;
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}
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*/
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// debounce counter expired, create report
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uint8_t reportIndex = 2; // reportBuffer[0] contains modifiers
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memset(reportBuffer, 0, sizeOfReportBuffer); // clear report buffer
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for (uint8_t row = 0; row <= 19; row++) { // process all rows for key-codes
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uint8_t data = curmatrix[row]; // restore buffer
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if (data != 0xff) { // anything on this row? - optimization
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for (uint8_t col = 0; col <= 7; col++) { // check every bit on this row
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uint8_t key, modifier, isghostkey;
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if (data & (1 << col)) {
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key = pgm_read_byte(&keymatrix[row][col]);
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modifier = pgm_read_byte(&modmatrix[row][col]);
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isghostkey = (ghostmatrix[row] & (1 << col)) != 0;
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} else {
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key = KEY_Reserved;
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modifier = MOD_NONE;
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||||||
|
isghostkey = 0x00;
|
||||||
|
}
|
||||||
|
if (key != KEY_Reserved) { // keycode should be added to report
|
||||||
|
if (reportIndex >= sizeOfReportBuffer) { // too many keycodes
|
||||||
|
if (!retval & 0x02) { // Only fill buffer once
|
||||||
|
memset(reportBuffer+2, KEY_ErrorRollOver, sizeOfReportBuffer-2);
|
||||||
|
retval |= 0x02; // continue decoding to get modifiers
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
if (isghostkey) {
|
||||||
|
// we're in a ghost-key situation
|
||||||
|
if (bufferContains(oldReportBuffer, key)) {
|
||||||
|
// this key has been pressed before, so we still send it
|
||||||
|
reportBuffer[reportIndex] = key; // set next available entry
|
||||||
|
reportIndex++;
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
reportBuffer[reportIndex] = key; // set next available entry
|
||||||
|
reportIndex++;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (modifier != MOD_NONE) { // modifier should be added to report
|
||||||
|
reportBuffer[0] |= modifier;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
retval |= 0x01; // must have been a change at some point, since debounce is done
|
||||||
|
}
|
||||||
|
return retval;
|
||||||
|
}
|
||||||
|
|
||||||
Loading…
Reference in New Issue
Block a user