/* Copyright 2021 mtei 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 . */ // clang-format off #ifndef readPort # include "gpio_extr.h" #endif #include "util.h" #include "matrix.h" #include "matrix_extr.h" #include "debounce.h" #define ALWAYS_INLINE inline __attribute__((always_inline)) #define NO_INLINE __attribute__((noinline)) #define LOCAL_FUNC static #define LOCAL_DATA static #ifndef _BV # define _BV(bit) (1 << (bit)) #endif #ifndef MATRIX_DEBUG_PIN # define MATRIX_DEBUG_PIN_INIT() # define MATRIX_DEBUG_SCAN_START() # define MATRIX_DEBUG_SCAN_END() # define MATRIX_DEBUG_DELAY_START() # define MATRIX_DEBUG_DELAY_END() # define MATRIX_DEBUG_GAP() #else # define MATRIX_DEBUG_GAP() asm volatile("nop \n nop":::"memory") #endif typedef uint16_t port_width_t; #if MATRIX_TYPE == DIRECT_SWITCH || MATRIX_TYPE == DIODE_COL2ROW # define MATRIX_LINES MATRIX_ROWS typedef matrix_row_t matrix_line_t; #endif #if MATRIX_TYPE == DIODE_ROW2COL # define MATRIX_LINES MATRIX_COLS typedef matrix_col_t matrix_line_t; #endif typedef struct _port_descriptor { int device; pin_t port; } port_descriptor; /* matrix state(1:on, 0:off) */ extern matrix_row_t raw_matrix[MATRIX_ROWS]; // raw values extern matrix_row_t matrix[MATRIX_ROWS]; // debounced values #define setPortBitOutput_writeLow(port, bit) \ do { setPortBitOutput(port, bit); writePortBitLow(port, bit); } while(0) #define setPortBitOutput_writeLow_atomic(port, bit) \ do { ATOMIC_BLOCK_FORCEON { setPortBitOutput_writeLow(port, bit); } } while(0) #define setPortBitInputHigh_atomic(port, bit) \ do { ATOMIC_BLOCK_FORCEON { setPortBitInputHigh(port, bit); } } while(0) #if defined(MATRIX_IN_PORTS) && defined(MATRIX_IN_PINS) # include "matrix_config_expand.c" #else # error matrix.c need defined MATRIX_IN_PORTS and MATRIX_IN_PINS #endif LOCAL_FUNC void unselect_output(uint8_t out_index) { unselect_output_inline(out_index); } LOCAL_FUNC void init_output_ports(void) { for (int i = 0; i < END_outpin_index; i++) { unselect_output(i); } } LOCAL_FUNC void init_all_ports(void) { init_input_ports(); init_output_ports(); init_inport_mask(); init_extension(); } LOCAL_FUNC ALWAYS_INLINE void select_line_and_read_input_ports(uint8_t current_line, port_width_t port_buffer[NUM_OF_INPUT_PORTS]); LOCAL_FUNC void select_line_and_read_input_ports(uint8_t current_line, port_width_t port_buffer[NUM_OF_INPUT_PORTS]) { // Select row (or col) select_output(current_line); matrix_output_select_delay(); // Read ports read_all_input_ports(port_buffer, false); // Unselect row (or col) unselect_output_inline(current_line); } LOCAL_FUNC ALWAYS_INLINE void read_matrix_line(matrix_line_t phy_matrix[], uint8_t current_line); #if MATRIX_TYPE == DIODE_ROW2COL || MATRIX_TYPE == DIODE_COL2ROW LOCAL_FUNC void read_matrix_line(matrix_line_t phy_matrix[], uint8_t current_line) { // Start with a clear matrix row matrix_line_t current_line_value = 0; port_width_t port_buffer[NUM_OF_INPUT_PORTS]; #ifdef MATRIX_GPIO_NEED_SEPARATE_ATOMIC select_line_and_read_input_ports(current_line, port_buffer); #else ATOMIC_BLOCK_FORCEON { select_line_and_read_input_ports(current_line, port_buffer); } #endif // Build row (or col) current_line_value = build_matrix_line(port_buffer); // Wait signal raise up if (current_line_value) { MATRIX_DEBUG_DELAY_START(); wait_unselect_done(); MATRIX_DEBUG_DELAY_END(); } phy_matrix[current_line] = current_line_value; } #endif // MATRIX_TYPE == DIODE_ROW2COL || MATRIX_TYPE == DIODE_COL2ROW #if MATRIX_TYPE == DIRECT_SWITCH LOCAL_FUNC void read_matrix_line(matrix_line_t phy_matrix[], uint8_t current_line) { port_width_t port_buffer[NUM_OF_INPUT_PORTS]; if (current_line != 0) { return; } for (uint8_t i = 0; i < MATRIX_LINES; i++) { phy_matrix[i] = 0; } read_all_input_ports(port_buffer, false); // Build matrix build_matrix_direct(port_buffer, phy_matrix); } #endif // MATRIX_TYPE == DIRECT_SWITCH void matrix_init(void) { // initialize key pins init_all_ports(); // initialize matrix state: all keys off for (uint8_t i = 0; i < MATRIX_ROWS; i++) { raw_matrix[i] = 0; matrix[i] = 0; } debounce_init(MATRIX_ROWS); matrix_init_kb(); } uint8_t matrix_scan(void) { matrix_line_t phy_matrix[MATRIX_LINES]; MATRIX_DEBUG_PIN_INIT(); MATRIX_DEBUG_SCAN_START(); // read I/O port to phy_matrix[] (physical matrix) //select line, read inputs for (uint8_t current_line = 0; current_line < MATRIX_LINES; current_line++) { read_matrix_line(phy_matrix, current_line); } MATRIX_DEBUG_SCAN_END(); MATRIX_DEBUG_GAP(); MATRIX_DEBUG_SCAN_START(); bool changed = false; #if MATRIX_TYPE == DIRECT_SWITCH || MATRIX_TYPE == DIODE_COL2ROW // copy phy_matrix[] to raw_matrix[] for (uint8_t current_line = 0; current_line < MATRIX_ROWS; current_line++) { if (raw_matrix[current_line] != phy_matrix[current_line]) { changed = true; raw_matrix[current_line] = phy_matrix[current_line]; } } #endif #if MATRIX_TYPE == DIODE_ROW2COL // transpose phy_matrix[] to raw_matrix[] matrix_row_t trans_matrix[MATRIX_ROWS]; for (uint8_t i = 0; i < MATRIX_ROWS; i++ ) { trans_matrix[i] = 0; } for (uint8_t src_line = 0; src_line < MATRIX_LINES; src_line++) { matrix_line_t src_line_data = phy_matrix[src_line]; matrix_row_t dist_bit = MATRIX_ROW_SHIFTER << src_line; for (uint8_t dist_rows = 0; dist_rows < MATRIX_ROWS; dist_rows++) { if ((src_line_data & 1) == 1) { trans_matrix[dist_rows] |= dist_bit; } src_line_data >>= 1; } } for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) { if (raw_matrix[current_row] != trans_matrix[current_row]) { changed = true; raw_matrix[current_row] = trans_matrix[current_row]; } } #endif MATRIX_DEBUG_SCAN_END(); MATRIX_DEBUG_GAP(); MATRIX_DEBUG_SCAN_START(); // debounce raw_matrix[] to matrix[] debounce(raw_matrix, matrix, MATRIX_ROWS, changed); MATRIX_DEBUG_SCAN_END(); MATRIX_DEBUG_GAP(); MATRIX_DEBUG_SCAN_START(); matrix_scan_kb(); MATRIX_DEBUG_SCAN_END(); return (uint8_t)changed; }