qmk_firmware/keyboards/nullbitsco/nibble/matrix.c
Jay Greco 999326acc8
Add nullbits nibble (#9250)
* Add NIBBLE keyboard

* Update VID for VIA compatibility

* Add QMK PR feedback

* Update matrix_init_remote_kb()

* Update with requested changes

Clean up config, makefile rules, and keymap files

* Update with changes for unified ANSI/ISO layout

* Add NO_USB_STARTUP_CHECK note in readme

* Add license info, update with PR changes

-Refactor encoder, via_extras code
-Refactor VIA specific code to live in keymap folder
-Remove non-inclusive naming in remote keyboard.c/h
-Add documentation to remote_keyboard.c
-Add compiler check for vusb_detect for non-avr micros

* Fix print formatter in encoder handler

Co-authored-by: Nick Brassel <nick@tzarc.org>

* Small PR updates

-Remove unneded matrix code from nibble.c
-Clean up include code in nibble_encoder.h

* Update Big LED headerfile

-Declare Big LED functions in header file (derp)

* Update keyboards/nullbitsco/nibble/nibble.c

-Update with drashna's suggested CAPS LED code change

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/nullbitsco/nibble/rules.mk

-Update with drasha's suggested makefile formatting changes

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Fix caps_lock typo

Co-authored-by: Nick Brassel <nick@tzarc.org>
Co-authored-by: Drashna Jaelre <drashna@live.com>
2020-10-23 17:47:14 +11:00

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2.6 KiB
C

/* Copyright 2020 Jay Greco
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "quantum.h"
#define COL_SHIFTER ((uint32_t)1)
// Column pins
static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
static const uint8_t col_pins[MATRIX_MUX_COLS] = MATRIX_COL_MUX_PINS;
// Internal functions
static void init_pins(void) {
// Set cols to outputs, low
for (uint8_t pin = 0; pin < MATRIX_MUX_COLS; pin++) {
setPinOutput(col_pins[pin]);
}
// Unselect cols
for (uint8_t bit = 0; bit < MATRIX_MUX_COLS; bit++) {
writePinLow(col_pins[bit]);
}
// Set rows to input, pullup
for (uint8_t pin = 0; pin < MATRIX_ROWS; pin++) {
setPinInputHigh(row_pins[pin]);
}
}
static void select_col(uint8_t col)
{
for (uint8_t bit = 0; bit < MATRIX_MUX_COLS; bit++) {
uint8_t state = (col & (0b1 << bit)) >> bit;
writePin(col_pins[bit], state);
}
}
static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
{
bool matrix_changed = false;
select_col(current_col);
wait_us(5);
// Read each row sequentially
for(uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++)
{
matrix_row_t last_row_value = current_matrix[row_index];
if (!readPin(row_pins[row_index]))
{
current_matrix[row_index] |= (COL_SHIFTER << current_col);
}
else
{
current_matrix[row_index] &= ~(COL_SHIFTER << current_col);
}
if ((last_row_value != current_matrix[row_index]) && !(matrix_changed))
{
matrix_changed = true;
}
}
return matrix_changed;
}
// Matrix scan functions
void matrix_init_custom(void) {
init_pins();
}
bool matrix_scan_custom(matrix_row_t current_matrix[]) {
bool changed = false;
//Set col, read rows
for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
changed |= read_rows_on_col(current_matrix, current_col);
}
return (uint8_t)changed;
}