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Diffstat (limited to 'keyboards/dichotemy/matrix.c')
| -rw-r--r-- | keyboards/dichotemy/matrix.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/keyboards/dichotemy/matrix.c b/keyboards/dichotemy/matrix.c new file mode 100644 index 000000000..02e96e38c --- /dev/null +++ b/keyboards/dichotemy/matrix.c @@ -0,0 +1,178 @@ +/* +Copyright 2012 Jun Wako +Copyright 2014 Jack Humbert + +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 <stdint.h> +#include <stdbool.h> +#if defined(__AVR__) +#include <avr/io.h> +#endif +#include "wait.h" +#include "print.h" +#include "debug.h" +#include "util.h" +#include "matrix.h" +#include "timer.h" + +#if (MATRIX_COLS <= 8) +# define print_matrix_header() print("\nr/c 01234567\n") +# define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row)) +# define matrix_bitpop(i) bitpop(matrix[i]) +# define ROW_SHIFTER ((uint8_t)1) +#elif (MATRIX_COLS <= 16) +# define print_matrix_header() print("\nr/c 0123456789ABCDEF\n") +# define print_matrix_row(row) print_bin_reverse16(matrix_get_row(row)) +# define matrix_bitpop(i) bitpop16(matrix[i]) +# define ROW_SHIFTER ((uint16_t)1) +#elif (MATRIX_COLS <= 32) +# define print_matrix_header() print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n") +# define print_matrix_row(row) print_bin_reverse32(matrix_get_row(row)) +# define matrix_bitpop(i) bitpop32(matrix[i]) +# define ROW_SHIFTER ((uint32_t)1) +#endif + +#define MAIN_ROWMASK 0xFFF0; +#define LOWER_ROWMASK 0x1F80; + +/* matrix state(1:on, 0:off) */ +static matrix_row_t matrix[MATRIX_ROWS]; + +__attribute__ ((weak)) +void matrix_init_quantum(void) { + matrix_init_kb(); +} + +__attribute__ ((weak)) +void matrix_scan_quantum(void) { + matrix_scan_kb(); +} + +__attribute__ ((weak)) +void matrix_init_kb(void) { + matrix_init_user(); +} + +__attribute__ ((weak)) +void matrix_scan_kb(void) { + matrix_scan_user(); +} + +__attribute__ ((weak)) +void matrix_init_user(void) { +} + +__attribute__ ((weak)) +void matrix_scan_user(void) { +} + +inline +uint8_t matrix_rows(void) { + return MATRIX_ROWS; +} + +inline +uint8_t matrix_cols(void) { + return MATRIX_COLS; +} + +void matrix_init(void) { + + matrix_init_quantum(); +} + +uint8_t matrix_scan(void) +{ + SERIAL_UART_INIT(); + + uint32_t timeout = 0; + + //the s character requests the RF slave to send the matrix + SERIAL_UART_DATA = 's'; + + //trust the external keystates entirely, erase the last data + uint8_t uart_data[7] = {0}; + + //there are 10 bytes corresponding to 10 columns, and an end byte + for (uint8_t i = 0; i < 7; i++) { + //wait for the serial data, timeout if it's been too long + //this only happened in testing with a loose wire, but does no + //harm to leave it in here + while(!SERIAL_UART_RXD_PRESENT){ + timeout++; + if (timeout > 10000){ + break; + } + } + uart_data[i] = SERIAL_UART_DATA; + } + + //check for the end packet, the key state bytes use the LSBs, so 0xE0 + //will only show up here if the correct bytes were recieved + if (uart_data[6] == 0x96) { //this is an arbitrary binary checksum (10010110) + //shifting and transferring the keystates to the QMK matrix variable + //bits 1-12 are row 1, 13-24 are row 2, 25-36 are row 3, + //bits 37-42 are row 4 (only 6 wide, 1-3 are 0, and 10-12 are 0) + //bits 43-48 are row 5 (same as row 4) + /* ASSUMING MSB FIRST */ + matrix[0] = (((uint16_t) uart_data[0] << 8) | ((uint16_t) uart_data[1])) & MAIN_ROWMASK; + matrix[1] = ((uint16_t) uart_data[1] << 12) | ((uint16_t) uart_data[2] << 4); + matrix[2] = (((uint16_t) uart_data[3] << 8) | ((uint16_t) uart_data[4])) & MAIN_ROWMASK; + matrix[3] = (((uint16_t) uart_data[4] << 9) | ((uint16_t) uart_data[5] << 1)) & LOWER_ROWMASK; + matrix[4] = ((uint16_t) uart_data[5] << 7) & LOWER_ROWMASK; + /* OK, TURNS OUT THAT WAS A BAD ASSUMPTION */ + for (uint8_t i = 0; i < MATRIX_ROWS; i++) { + //I've unpacked these into the mirror image of what QMK expects them to be, so... + matrix[i] = ((matrix[i] * 0x0802LU & 0x22110LU) | (matrix[i] * 0x8020LU & 0x88440LU)) * 0x10101LU >> 16; + //bithack mirror! Doesn't make any sense, but works - and efficiently. + } + } + + + matrix_scan_quantum(); + return 1; +} + +inline +bool matrix_is_on(uint8_t row, uint8_t col) +{ + return (matrix[row] & ((matrix_row_t)1<col)); +} + +inline +matrix_row_t matrix_get_row(uint8_t row) +{ + return matrix[row]; +} + +void matrix_print(void) +{ + print_matrix_header(); + + for (uint8_t row = 0; row < MATRIX_ROWS; row++) { + phex(row); print(": "); + print_matrix_row(row); + print("\n"); + } +} + +uint8_t matrix_key_count(void) +{ + uint8_t count = 0; + for (uint8_t i = 0; i < MATRIX_ROWS; i++) { + count += matrix_bitpop(i); + } + return count; +} |