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>
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keyboards/nullbitsco/nibble/matrix.c
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keyboards/nullbitsco/nibble/matrix.c
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/* Copyright 2020 Jay Greco
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*
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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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*
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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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*
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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 "quantum.h"
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#define COL_SHIFTER ((uint32_t)1)
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// Column pins
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static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
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static const uint8_t col_pins[MATRIX_MUX_COLS] = MATRIX_COL_MUX_PINS;
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// Internal functions
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static void init_pins(void) {
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// Set cols to outputs, low
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for (uint8_t pin = 0; pin < MATRIX_MUX_COLS; pin++) {
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setPinOutput(col_pins[pin]);
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}
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// Unselect cols
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for (uint8_t bit = 0; bit < MATRIX_MUX_COLS; bit++) {
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writePinLow(col_pins[bit]);
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}
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// Set rows to input, pullup
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for (uint8_t pin = 0; pin < MATRIX_ROWS; pin++) {
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setPinInputHigh(row_pins[pin]);
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}
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}
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static void select_col(uint8_t col)
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{
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for (uint8_t bit = 0; bit < MATRIX_MUX_COLS; bit++) {
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uint8_t state = (col & (0b1 << bit)) >> bit;
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writePin(col_pins[bit], state);
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}
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}
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static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
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{
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bool matrix_changed = false;
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select_col(current_col);
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wait_us(5);
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// Read each row sequentially
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for(uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++)
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{
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matrix_row_t last_row_value = current_matrix[row_index];
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if (!readPin(row_pins[row_index]))
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{
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current_matrix[row_index] |= (COL_SHIFTER << current_col);
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}
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else
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{
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current_matrix[row_index] &= ~(COL_SHIFTER << current_col);
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}
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if ((last_row_value != current_matrix[row_index]) && !(matrix_changed))
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{
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matrix_changed = true;
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}
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}
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return matrix_changed;
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}
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// Matrix scan functions
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void matrix_init_custom(void) {
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init_pins();
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}
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bool matrix_scan_custom(matrix_row_t current_matrix[]) {
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bool changed = false;
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//Set col, read rows
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for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
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changed |= read_rows_on_col(current_matrix, current_col);
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}
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return (uint8_t)changed;
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}
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