From ecca9c54594adf0117421f90c2c2d636fbfea884 Mon Sep 17 00:00:00 2001 From: lalalademaxiya1 <66767061+lalalademaxiya1@users.noreply.github.com> Date: Wed, 21 Jun 2023 11:05:07 +0800 Subject: Add Keychron C2 Pro (#20701) Co-authored-by: Drashna Jaelre Co-authored-by: adophoxia <100170946+adophoxia@users.noreply.github.com> Co-authored-by: jack <0x6a73@protonmail.com> --- keyboards/keychron/c2_pro/matrix.c | 202 +++++++++++++++++++++++++++++++++++++ 1 file changed, 202 insertions(+) create mode 100644 keyboards/keychron/c2_pro/matrix.c (limited to 'keyboards/keychron/c2_pro/matrix.c') diff --git a/keyboards/keychron/c2_pro/matrix.c b/keyboards/keychron/c2_pro/matrix.c new file mode 100644 index 0000000000..af7514c5ad --- /dev/null +++ b/keyboards/keychron/c2_pro/matrix.c @@ -0,0 +1,202 @@ +/* Copyright 2023 @ Keychron (https://www.keychron.com) + * + * 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 . + */ + +#include "quantum.h" + +#ifndef SHIFT_COL_START +# define SHIFT_COL_START 8 +#endif +#ifndef SHIFT_COL_END +# define SHIFT_COL_END 15 +#endif + +#if defined(SHIFT_COL_START) && defined(SHIFT_COL_END) +# if ((SHIFT_COL_END - SHIFT_COL_START) > 16) +# define SIZE_T uint32_t +# define UNSELECT_ALL_COL 0xFFFFFFFF +# elif ((SHIFT_COL_END - SHIFT_COL_START) > 8) +# define SIZE_T uint16_t +# define UNSELECT_ALL_COL 0xFFFF +# else +# define SIZE_T uint8_t +# define UNSELECT_ALL_COL 0xFF +# endif +#endif + +pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS; +pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS; + +static inline void setPinOutput_writeLow(pin_t pin) { + ATOMIC_BLOCK_FORCEON { + setPinOutput(pin); + writePinLow(pin); + } +} + +static inline void setPinOutput_writeHigh(pin_t pin) { + ATOMIC_BLOCK_FORCEON { + setPinOutput(pin); + writePinHigh(pin); + } +} + +static inline void setPinInput_high(pin_t pin) { + ATOMIC_BLOCK_FORCEON { + setPinInputHigh(pin); + } +} + +static inline uint8_t readMatrixPin(pin_t pin) { + if (pin != NO_PIN) { + return readPin(pin); + } else { + return 1; + } +} + +static inline void HC595_delay(uint8_t n) { + while (n-- > 0) { + asm volatile("nop" ::: "memory"); + } +} + +static void HC595_output(SIZE_T data, uint8_t bit) { + uint8_t n = 1; + + ATOMIC_BLOCK_FORCEON { + for (uint8_t i = 0; i < (SHIFT_COL_END - SHIFT_COL_START + 1); i++) { + if (data & 0x1) { + writePinHigh(HC595_DS); + } else { + writePinLow(HC595_DS); + } + writePinHigh(HC595_SHCP); + HC595_delay(n); + writePinLow(HC595_SHCP); + HC595_delay(n); + if (bit) { + break; + } else { + data = data >> 1; + } + } + writePinHigh(HC595_STCP); + HC595_delay(n); + writePinLow(HC595_STCP); + HC595_delay(n); + } +} + +static bool select_col(uint8_t col) { + pin_t pin = col_pins[col]; + + if (col < SHIFT_COL_START || col > SHIFT_COL_END) { + setPinOutput_writeLow(pin); + return true; + } else { + if (col == SHIFT_COL_START) { + HC595_output(0x00, 1); + } + return true; + } + return false; +} + +static void unselect_col(uint8_t col) { + pin_t pin = col_pins[col]; + + if (col < SHIFT_COL_START || col > SHIFT_COL_END) { +#ifdef MATRIX_UNSELECT_DRIVE_HIGH + setPinOutput_writeHigh(pin); +#else + setPinInput_high(pin); +#endif + } else { + HC595_output(0x01, 1); + } +} + +static void unselect_cols(void) { + for (uint8_t x = 0; x < MATRIX_COLS; x++) { + pin_t pin = col_pins[x]; + if (x < SHIFT_COL_START || x > SHIFT_COL_END) { +#ifdef MATRIX_UNSELECT_DRIVE_HIGH + setPinOutput_writeHigh(pin); +#else + setPinInput_high(pin); +#endif + } else { + if (x == SHIFT_COL_START) HC595_output(UNSELECT_ALL_COL, 0); + } + } +} + +static void matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col, matrix_row_t row_shifter) { + bool key_pressed = false; + + // Select col + if (!select_col(current_col)) { // select col + return; // skip NO_PIN col + } + + matrix_output_select_delay(); + + // For each row... + for (uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++) { + // Check row pin state + if (readMatrixPin(row_pins[row_index]) == 0) { + // Pin LO, set col bit + current_matrix[row_index] |= row_shifter; + key_pressed = true; + } else { + // Pin HI, clear col bit + current_matrix[row_index] &= ~row_shifter; + } + } + + // Unselect col + unselect_col(current_col); + matrix_output_unselect_delay(current_col, key_pressed); // wait for all Row signals to go HIGH +} + +void matrix_init_custom(void) { + setPinOutput(HC595_DS); + setPinOutput(HC595_STCP); + setPinOutput(HC595_SHCP); + + for (uint8_t x = 0; x < MATRIX_ROWS; x++) { + if (row_pins[x] != NO_PIN) { + setPinInput_high(row_pins[x]); + } + } + + unselect_cols(); +} + +bool matrix_scan_custom(matrix_row_t current_matrix[]) { + matrix_row_t curr_matrix[MATRIX_ROWS] = {0}; + + // Set col, read rows + matrix_row_t row_shifter = MATRIX_ROW_SHIFTER; + for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++, row_shifter <<= 1) { + matrix_read_rows_on_col(curr_matrix, current_col, row_shifter); + } + + bool changed = memcmp(current_matrix, curr_matrix, sizeof(curr_matrix)) != 0; + if (changed) memcpy(current_matrix, curr_matrix, sizeof(curr_matrix)); + + return changed; +} -- cgit v1.2.3