port sun_usb converter from tmk

initial import

keyboards/converter/sun_usb/matrix.c

@@ -0,0 +1,197 @@
+/*
+Copyright 2012 Jun Wako <wakojun@gmail.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 QMK_KEYBOARD_H
+#include "protocol/serial.h"
+
+/*
+ * Matrix Array usage:
+ *
+ * ROW: 16(4bits)
+ * COL:  8(3bits)
+ *
+ *    8bit wide
+ *   +---------+
+ *  0|00 ... 07|
+ *  1|08 ... 0F|
+ *  :|   ...   |
+ *  :|   ...   |
+ *  E|70 ... 77|
+ *  F|78 ... 7F|
+ *   +---------+
+ */
+static uint8_t matrix[MATRIX_ROWS];
+#define ROW(code)      ((code>>3)&0xF)
+#define COL(code)      (code&0x07)
+
+static bool is_modified = false;
+
+__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)
+{
+    /* DDRD |= (1<<6); */
+    /* PORTD |= (1<<6); */
+    debug_enable = true;
+
+    serial_init();
+
+    // initialize matrix state: all keys off
+    for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
+
+    /* // wait for keyboard coming up */
+    /* // otherwise LED status update fails */
+    /* print("Reseting "); */
+    /* while (1) { */
+    /*     print("."); */
+    /*     while (serial_recv()); */
+    /*     serial_send(0x01); */
+    /*     _delay_ms(500); */
+    /*     if (serial_recv() == 0xFF) { */
+    /*         _delay_ms(500); */
+    /*         if (serial_recv() == 0x04) */
+    /*             break; */
+    /*     } */
+    /* } */
+    /* print(" Done\n"); */
+
+    /* PORTD &= ~(1<<6); */
+
+    matrix_init_quantum();
+    return;
+}
+
+uint8_t matrix_scan(void)
+{
+    uint8_t code;
+    code = serial_recv();
+    if (!code) return 0;
+
+    debug_hex(code); debug(" ");
+
+    switch (code) {
+        case 0xFF:  // reset success: FF 04
+            print("reset: ");
+            _delay_ms(500);
+            code = serial_recv();
+            xprintf("%02X\n", code);
+            if (code == 0x04) {
+                // LED status
+                led_set(host_keyboard_leds());
+            }
+            return 0;
+        case 0xFE:  // layout: FE <layout>
+            print("layout: ");
+            _delay_ms(500);
+            xprintf("%02X\n", serial_recv());
+            return 0;
+        case 0x7E:  // reset fail: 7E 01
+            print("reset fail: ");
+            _delay_ms(500);
+            xprintf("%02X\n", serial_recv());
+            return 0;
+        case 0x7F:
+            // all keys up
+            for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
+            return 0;
+    }
+
+    if (code&0x80) {
+        // break code
+        if (matrix_is_on(ROW(code), COL(code))) {
+            matrix[ROW(code)] &= ~(1<<COL(code));
+        }
+    } else {
+        // make code
+        if (!matrix_is_on(ROW(code), COL(code))) {
+            matrix[ROW(code)] |=  (1<<COL(code));
+        }
+    }
+
+    matrix_scan_quantum();
+    return code;
+}
+
+bool matrix_is_modified(void)
+{
+    return is_modified;
+}
+
+inline
+bool matrix_has_ghost(void)
+{
+    return false;
+}
+
+inline
+bool matrix_is_on(uint8_t row, uint8_t col)
+{
+    return (matrix[row] & (1<<col));
+}
+
+inline
+uint8_t matrix_get_row(uint8_t row)
+{
+    return matrix[row];
+}
+
+void matrix_print(void)
+{
+    print("\nr/c 01234567\n");
+    for (uint8_t row = 0; row < matrix_rows(); row++) {
+        phex(row); print(": ");
+        pbin_reverse(matrix_get_row(row));
+        print("\n");
+    }
+}
+
+uint8_t matrix_key_count(void)
+{
+    uint8_t count = 0;
+    for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+        count += bitpop(matrix[i]);
+    }
+    return count;
+}