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-rw-r--r--keyboards/glenpickle/chimera_ergo/matrix.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/keyboards/glenpickle/chimera_ergo/matrix.c b/keyboards/glenpickle/chimera_ergo/matrix.c
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+++ b/keyboards/glenpickle/chimera_ergo/matrix.c
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+/*
+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 "quantum.h"
+#include "matrix.h"
+#include "uart.h"
+
+void matrix_init_custom(void) {
+ uart_init(1000000);
+}
+
+bool matrix_scan_custom(matrix_row_t current_matrix[]) {
+ uint32_t timeout = 0;
+ bool changed = false;
+
+ //the s character requests the RF slave to send the matrix
+ uart_write('s');
+
+ //trust the external keystates entirely, erase the last data
+ uint8_t uart_data[14] = {0};
+
+ //there are 10 bytes corresponding to 10 columns, and an end byte
+ for (uint8_t i = 0; i < 14; 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 (!uart_available()) {
+ timeout++;
+ if (timeout > 10000) {
+ break;
+ }
+ }
+ uart_data[i] = uart_read();
+ }
+
+ //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[10] == 0xE0) {
+ //shifting and transferring the keystates to the QMK matrix variable
+ for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+ matrix_row_t current_row = (uint16_t) uart_data[i * 2] | (uint16_t) uart_data[i * 2 + 1] << 6;
+ if (current_matrix[i] != current_row) {
+ changed = true;
+ }
+ current_matrix[i] = current_row;
+ }
+ }
+
+ return changed;
+}