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-rw-r--r--keyboards/keychron/q3_pro/matrix.c293
1 files changed, 293 insertions, 0 deletions
diff --git a/keyboards/keychron/q3_pro/matrix.c b/keyboards/keychron/q3_pro/matrix.c
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+++ b/keyboards/keychron/q3_pro/matrix.c
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+/* Copyright 2022 @ 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include "quantum.h"
+#include "indicator.h"
+#include "transport.h"
+
+#define HC595_STCP B0
+#define HC595_SHCP A1
+#define HC595_DS A7
+
+pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
+pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
+
+extern indicator_config_t indicator_config;
+static uint32_t power_on_indicator_timer_buffer;
+extern bool bat_low_led_pin_state;
+
+#define POWER_ON_LED_DURATION 3000
+
+static inline void HC595_delay(uint16_t n) {
+ while (n-- > 0) {
+ asm volatile("nop" ::: "memory");
+ };
+}
+
+static void HC595_output(uint32_t data) {
+ uint8_t i;
+ uint8_t n = 1;
+
+ for (i = 0; i < (MATRIX_COLS + 3); i++) {
+ writePinLow(HC595_SHCP);
+
+ if (data & 0x1)
+ writePinHigh(HC595_DS);
+ else
+ writePinLow(HC595_DS);
+
+ data >>= 1;
+
+ HC595_delay(n);
+
+ writePinHigh(HC595_SHCP);
+ HC595_delay(n);
+ }
+
+ HC595_delay(n);
+ writePinLow(HC595_STCP);
+ HC595_delay(n);
+ writePinHigh(HC595_STCP);
+}
+
+static inline void setPinOutput_writeLow(pin_t pin) {
+ ATOMIC_BLOCK_FORCEON {
+ setPinOutput(pin);
+ writePinLow(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 bool select_col(uint8_t col) {
+ pin_t pin = col_pins[col];
+ uint32_t value = 0;
+
+ if (pin != NO_PIN) {
+ setPinOutput_writeLow(pin);
+ return true;
+ } else {
+ if (power_on_indicator_timer_buffer) {
+ if (sync_timer_elapsed32(power_on_indicator_timer_buffer) > POWER_ON_LED_DURATION) {
+ power_on_indicator_timer_buffer = 0;
+ HC595_output((~(0x1 << (21 - col - 1))) & (7 << 0));
+ } else {
+ HC595_output((~(0x1 << (21 - col - 1))));
+ }
+ } else {
+ if (get_transport() == TRANSPORT_BLUETOOTH) {
+ if (indicator_config.value) {
+ if (indicator_config.value & 0x80) {
+ value = ~(0x1 << (21 - col - 1)) & ~(3 << 0);
+ HC595_output(value);
+ } else {
+ value = (~(0x1 << (21 - col - 1))) & ~(7 << 0);
+ HC595_output(value);
+ }
+ } else {
+ if (host_keyboard_led_state().caps_lock) {
+ value = (~(0x1 << (21 - col - 1))) & ~(5 << 0);
+ HC595_output(value);
+ } else {
+ value = (~(0x1 << (21 - col - 1))) & ~(7 << 0);
+ HC595_output(value);
+ }
+ }
+ if (bat_low_led_pin_state) {
+ HC595_output(value | (1 << 0));
+ }
+ } else {
+ if (host_keyboard_led_state().caps_lock) {
+ HC595_output((~(0x1 << (21 - col - 1))) & ~(5 << 0));
+ } else {
+ HC595_output((~(0x1 << (21 - col - 1))) & ~(7 << 0));
+ }
+ }
+ }
+ return true;
+ }
+ return false;
+}
+
+static void unselect_col(uint8_t col) {
+ pin_t pin = col_pins[col];
+ uint32_t value = 0;
+
+ if (pin != NO_PIN) {
+#ifdef MATRIX_UNSELECT_DRIVE_HIGH
+ setPinOutput_writeHigh(pin);
+#else
+ setPinInput_high(pin);
+#endif
+ } else {
+ if (power_on_indicator_timer_buffer) {
+ if (sync_timer_elapsed32(power_on_indicator_timer_buffer) > POWER_ON_LED_DURATION) {
+ power_on_indicator_timer_buffer = 0;
+ HC595_output(0x1FFFFF & ~(7 << 0));
+ } else {
+ HC595_output(0x1FFFFF);
+ }
+ } else {
+ if (get_transport() == TRANSPORT_BLUETOOTH) {
+ if (indicator_config.value) {
+ if (indicator_config.value & 0x80) {
+ if (col == (MATRIX_COLS - 1)) {
+ value = 0x1FFFFF & ~(3 << 0);
+ HC595_output(value);
+ }
+ } else {
+ if (col == (MATRIX_COLS - 1)) {
+ if (col == (MATRIX_COLS - 1)) {
+ value = 0x1FFFFF & ~(7 << 0);
+ HC595_output(value);
+ }
+ }
+ }
+ } else {
+ if (host_keyboard_led_state().caps_lock) {
+ if (col == (MATRIX_COLS - 1)) {
+ if (col == (MATRIX_COLS - 1)) {
+ value = 0x1FFFFF & ~(5 << 0);
+ HC595_output(value);
+ }
+ }
+ } else {
+ if (col == (MATRIX_COLS - 1)) {
+ if (col == (MATRIX_COLS - 1)) {
+ value = 0x1FFFFF & ~(7 << 0);
+ HC595_output(value);
+ }
+ }
+ }
+ }
+ if (bat_low_led_pin_state) {
+ HC595_output(value | (1 << 0));
+ }
+ } else {
+ if (host_keyboard_led_state().caps_lock) {
+ if (col == (MATRIX_COLS - 1)) {
+ HC595_output(0x1FFFFF & ~(5 << 0));
+ }
+ } else {
+ if (col == (MATRIX_COLS - 1)) {
+ HC595_output(0x1FFFFF & ~(7 << 0));
+ }
+ }
+ }
+ }
+ }
+}
+
+static void unselect_cols(void) {
+ for (uint8_t x = 0; x < MATRIX_COLS; x++) {
+ pin_t pin = col_pins[x];
+ if (pin != NO_PIN) {
+#ifdef MATRIX_UNSELECT_DRIVE_HIGH
+ setPinOutput_writeHigh(pin);
+#else
+ setPinInput_high(pin);
+#endif
+ } else {
+ if (x == 0) {
+ HC595_output(0xFFFFFFFF);
+ power_on_indicator_timer_buffer = sync_timer_read32() | 1;
+ }
+ }
+ }
+}
+
+void select_all_cols(void) {
+ for (uint8_t x = 0; x < MATRIX_COLS; x++) {
+ pin_t pin = col_pins[x];
+ if (pin != NO_PIN) {
+ setPinOutput_writeLow(pin);
+ } else {
+ if (x == 0) {
+ if (host_keyboard_led_state().caps_lock) {
+ HC595_output(0x00000000 | (2 << 0));
+ } else {
+ HC595_output(0x00000000);
+ }
+ }
+ }
+ }
+}
+
+void matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
+ // Select col
+ if (!select_col(current_col)) { // select col
+ return; // skip NO_PIN col
+ }
+ HC595_delay(200);
+
+ // 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] |= (MATRIX_ROW_SHIFTER << current_col);
+ // key_pressed = true;
+ } else {
+ // Pin HI, clear col bit
+ current_matrix[row_index] &= ~(MATRIX_ROW_SHIFTER << current_col);
+ }
+ }
+
+ unselect_col(current_col);
+ HC595_delay(200);
+}
+
+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[]) {
+ bool matrix_has_changed = false;
+
+ matrix_row_t curr_matrix[MATRIX_ROWS] = {0};
+
+ // Set col, read rows
+ for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
+ matrix_read_rows_on_col(curr_matrix, current_col);
+ }
+
+ matrix_has_changed = memcmp(current_matrix, curr_matrix, sizeof(curr_matrix)) != 0;
+ if (matrix_has_changed) memcpy(current_matrix, curr_matrix, sizeof(curr_matrix));
+
+ return matrix_has_changed;
+}
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