forked from forks/qmk_firmware
b72a1aa3fe
* Keyboard: revamp frosty-flake leds
This commit transitions bpiphany/frosty_flake to led_update_{kb,user}
and rewrites the AVR bit twiddling logic to use the standard QMK GPIO
API.
* Keyboard: rewrite frosty_flake's matrix reader to be a lite custom matrix
This commit replaces frosty_flake's custom matrix and debounce logic
with a "lite" custom matrix. In addition to being somewhat clearer, this
allows a consumer of the flake board to choose their own debouncing
algorithm. The one closest to the implementation originally in use is
sym_g, but this opens us up to supporting eager_pk and eager_pr.
The original matrix code was 18 columns for 8 rows, but using a single
row read and unpacking the bits into individual columns. To simplify,
I've changed the key layout to be 8C 18R instead of 18C 8R: this lets us
use a single read directly into the matrix _and_ drop down to a uint8_t
instead of a uint32_t for matrix_row_t.
Since we're no longer implementing our own debouncing and row unpacking,
we save ~400 bytes on the final firmware image.
Fully tested against a CM Storm QFR hosting the flake -- this commit
message was written using the new matrix code.
Firmware Sizes (assuming stock configuration as of 42d6270f2)
Matrix+Debounce Size (bytes)
--------------- ------------
original 17740
new + sym_g 17284
new + eager_pr 18106
new + eager_pk 18204
I expect that there are some scanning speed benefits as well.
* Keyboard: update frosty_flake's UNUSED_PINS
* Keyboard: Remove meaningless weak redefinitions from frosty
These are not necessary (and all of them already live somewhere in
Quantum).
86 lines
3.3 KiB
C
86 lines
3.3 KiB
C
/*
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Copyright 2017 Gabriel Young <gabeplaysdrums@live.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <util/delay.h>
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#include "matrix.h"
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static matrix_row_t scan_col(void) {
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// Each of the 8 columns is read off pins as below
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// 7 6 5 4 3 2 1 0
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// ,--,--,--,--,--,--,--,--,
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// |B0|B3|B2|B1|B6|B4|B5|C7|
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// `--`--`--`--`--`--`--`--`
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return (
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(PINC&(1<<7) ? 0 : ((matrix_row_t)1<<0)) |
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(PINB&(1<<5) ? 0 : ((matrix_row_t)1<<1)) |
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(PINB&(1<<4) ? 0 : ((matrix_row_t)1<<2)) |
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(PINB&(1<<6) ? 0 : ((matrix_row_t)1<<3)) |
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(PINB&(1<<1) ? 0 : ((matrix_row_t)1<<4)) |
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(PINB&(1<<2) ? 0 : ((matrix_row_t)1<<5)) |
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(PINB&(1<<3) ? 0 : ((matrix_row_t)1<<6)) |
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(PINB&(1<<0) ? 0 : ((matrix_row_t)1<<7))
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);
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}
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static void select_row(uint8_t row) {
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switch (row) {
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case 0: PORTD = (PORTD & ~0b01111011) | 0b00011011; break;
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case 1: PORTD = (PORTD & ~0b01111011) | 0b01000011; break;
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case 2: PORTD = (PORTD & ~0b01111011) | 0b01101010; break;
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case 3: PORTD = (PORTD & ~0b01111011) | 0b01111001; break;
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case 4: PORTD = (PORTD & ~0b01111011) | 0b01100010; break;
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case 5: PORTD = (PORTD & ~0b01111011) | 0b01110001; break;
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case 6: PORTD = (PORTD & ~0b01111011) | 0b01100001; break;
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case 7: PORTD = (PORTD & ~0b01111011) | 0b01110000; break;
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case 8: PORTD = (PORTD & ~0b01111011) | 0b01100000; break;
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case 9: PORTD = (PORTD & ~0b01111011) | 0b01101000; break;
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case 10: PORTD = (PORTD & ~0b01111011) | 0b00101011; break;
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case 11: PORTD = (PORTD & ~0b01111011) | 0b00110011; break;
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case 12: PORTD = (PORTD & ~0b01111011) | 0b00100011; break;
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case 13: PORTD = (PORTD & ~0b01111011) | 0b01111000; break;
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case 14: PORTD = (PORTD & ~0b01111011) | 0b00010011; break;
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case 15: PORTD = (PORTD & ~0b01111011) | 0b01101001; break;
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case 16: PORTD = (PORTD & ~0b01111011) | 0b00001011; break;
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case 17: PORTD = (PORTD & ~0b01111011) | 0b00111011; break;
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}
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}
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void matrix_init_custom(void) {
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/* Row output pins */
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DDRD |= 0b01111011;
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/* Column input pins */
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DDRC &= ~0b10000000;
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DDRB &= ~0b01111111;
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PORTC |= 0b10000000;
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PORTB |= 0b01111111;
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}
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// matrix is 18 uint8_t.
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// we select the row (one of 18), then read the column
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bool matrix_scan_custom(matrix_row_t current_matrix[]) {
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bool has_changed = false;
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for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
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matrix_row_t orig = current_matrix[row];
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select_row(row);
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_delay_us(3);
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current_matrix[row] = scan_col();
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has_changed |= (orig != current_matrix[row]);
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}
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return has_changed;
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}
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