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https://github.com/qmk/qmk_firmware.git
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cb6e1c1af5
* Add splitkb's Elora * WIP * Make requested changes * fix missing call to keyboard init user for elora * sync vial_qmk with qmk * Add fixes * Add encoder quadrature and update files * Update Readme * Implement changes * Remove encoder driver from keyboard.json * make requested changed * Implement changes and remove myriad_task as it wasn't actually doing anything. * Remove myriad.h from matrix.c * Simplify OLED code debug * Update RGB keycodes (qmk#24484) * remove rules.mk (qmk#23281) * Add matrix state sync --------- Co-authored-by: NapOli1084 <10320176+NapOli1084@users.noreply.github.com> Co-authored-by: harveysch <126267034+harvey-splitkb@users.noreply.github.com> Co-authored-by: harvey <harvey@splitkb.com> Co-authored-by: VeyPatch <126267034+VeyPatch@users.noreply.github.com>
57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
// Copyright 2024 splitkb.com (support@splitkb.com)
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "matrix.h"
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#include "spi_master.h"
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// The matrix is hooked up to a chain of 74xx165 shift registers.
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// Pin F0 acts as Chip Select (active-low)
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// The signal goes to a NOT gate, whose output is wired to
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// a) the latch pin of the shift registers
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// b) the "enable" pin of a tri-state buffer,
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// attached between the shift registers and MISO
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// F0 has an external pull-up.
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// SCK works as usual.
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//
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// Note that the matrix contains a variety of data.
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// In addition to the keys, it also reads the rotary encoders
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// and whether the board is the left/right half.
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void matrix_init_custom(void) {
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// Note: `spi_init` has already been called
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// in `keyboard_pre_init_kb()`, so nothing to do here
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}
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bool matrix_scan_custom(matrix_row_t current_matrix[]) {
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// Enough to hold the shift registers
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uint16_t length = 5;
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uint8_t data[length];
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// Matrix SPI config
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// 1) Pin
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// 2) Mode: Register shifts on rising clock, and clock idles low
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// pol = 0 & pha = 0 => mode 0
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// 3) LSB first: Register outputs H first, and we want H as MSB,
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// as this result in a neat A-H order in the layout macro.
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// 4) Divisor: 2 is the fastest possible, at Fclk / 2.
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// range is 2-128
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spi_start(GP13, false, 0, 128);
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spi_receive(data, length);
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spi_stop();
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bool matrix_has_changed = false;
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for (uint8_t i = 0; i < length; i++) {
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// Bitwise NOT because we use pull-ups,
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// and switches short the pin to ground,
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// but the matrix uses 1 to indicate a pressed switch
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uint8_t word = ~data[i];
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matrix_has_changed |= current_matrix[i] ^ word;
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current_matrix[i] = word;
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}
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#ifdef MYRIAD_ENABLE
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bool myriad_hook_matrix(matrix_row_t current_matrix[]);
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return matrix_has_changed || myriad_hook_matrix(current_matrix);
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#else
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return matrix_has_changed;
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#endif
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} |