#include "print.h"
#include "util.h"
#include "matrix.h"
+#include "led.h"
#include "debug.h"
#include "protocol/serial.h"
#define ROW(code) ((code>>3)&0xF)
#define COL(code) (code&0x07)
-static bool is_modified = false;
+static void pc98_send(uint8_t data)
+{
+ PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
+ _delay_ms(1);
+ serial_send(data);
+ _delay_ms(1);
+ PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
+}
-inline
-uint8_t matrix_rows(void)
+static int16_t pc98_wait_response(void)
{
- return MATRIX_ROWS;
+ int16_t code = -1;
+ uint8_t timeout = 255;
+ while (timeout-- && (code = serial_recv2()) == -1) _delay_ms(1);
+ return code;
}
-inline
-uint8_t matrix_cols(void)
+static void pc98_inhibit_repeat(void)
{
- return MATRIX_COLS;
+ uint16_t code;
+RETRY:
+ pc98_send(0x9C);
+ code = pc98_wait_response();
+ if (code != -1) dprintf("send 9C: %02X\n", code);
+ if (code != 0xFA) return;
+
+ pc98_send(0x70);
+ code = pc98_wait_response();
+ if (code != -1) dprintf("send 70: %02X\n", code);
+ if (code != 0xFA) goto RETRY;
}
-void matrix_init(void)
+static uint8_t pc98_led = 0;
+static void pc98_led_set(void)
{
- print_enable = true;
- debug_enable = true;
+ uint16_t code;
+RETRY:
+ pc98_send(0x9D);
+ code = pc98_wait_response();
+ if (code != -1) dprintf("send 9D: %02X\n", code);
+ if (code != 0xFA) return;
+
+ pc98_send(pc98_led);
+ code = pc98_wait_response();
+ if (code != -1) dprintf("send %02X: %02X\n", pc98_led, code);
+ if (code != 0xFA) goto RETRY;
+}
+void matrix_init(void)
+{
PC98_RST_DDR |= (1<<PC98_RST_BIT);
PC98_RDY_DDR |= (1<<PC98_RDY_BIT);
PC98_RTY_DDR |= (1<<PC98_RTY_BIT);
PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
PC98_RTY_PORT |= (1<<PC98_RTY_BIT);
- DDRD |= 1<<7;
-
serial_init();
// PC98 reset
- PC98_RST_PORT &= ~(1<<PC98_RST_BIT);
- _delay_us(15);
- PC98_RST_PORT |= (1<<PC98_RST_BIT);
- _delay_us(13);
- PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
+ // https://archive.org/stream/PC9800TechnicalDataBookHARDWARE1993/PC-9800TechnicalDataBook_HARDWARE1993#page/n359
+ PC98_RDY_PORT |= (1<<PC98_RDY_BIT); // RDY: high
+ PC98_RST_PORT &= ~(1<<PC98_RST_BIT); // RST: low
+ _delay_us(15); // > 13us
+ PC98_RST_PORT |= (1<<PC98_RST_BIT); // RST: high
- // PC98 ready
- PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
+ _delay_ms(50);
+ pc98_inhibit_repeat();
// initialize matrix state: all keys off
for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
- debug("init\n");
+ // ready to receive from keyboard
+ PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT); // RDY: low
+
return;
}
uint8_t matrix_scan(void)
{
- is_modified = false;
-
- uint8_t code;
- PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
- _delay_us(30);
- code = serial_recv();
- PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
- if (!code) return 0;
-
- debug_hex(code); debug(" ");
-
-/*
- switch (code) {
- case 0x7E: // reset fail
- case 0xFE: // layout
- case 0xFF: // reset success
- _delay_ms(500);
- // ignore response byte
- debug("(response ignored:");
- while ((code = serial_recv())) { debug(" "); debug_hex(code); }
- debug(") ");
- // FALL THROUGH
- case 0x7F:
- // all keys up
- for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
- return 0;
+ uint16_t code;
+ code = serial_recv2();
+ if (code == -1) {
+#ifdef PC98_LED_CONTROL
+ // Before sending command we have to make sure that there is no unprocessed key in queue
+ // otherwise keys will be missed during sending command
+ if (pc98_led) {
+ pc98_led_set();
+ pc98_led = 0;
+ }
+#endif
+ return 0;
}
+ dprintf("%02X ", code);
+
if (code&0x80) {
// break code
if (matrix_is_on(ROW(code), COL(code))) {
matrix[ROW(code)] &= ~(1<<COL(code));
- is_modified = true;
}
} else {
// make code
if (!matrix_is_on(ROW(code), COL(code))) {
matrix[ROW(code)] |= (1<<COL(code));
- is_modified = true;
}
}
-*/
- 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));
+ // PC-9801V keyboard requires RDY pulse.
+ // This is not optimal place though, it works.
+ PC98_RDY_PORT |= (1<<PC98_RDY_BIT); // RDY: high
+ _delay_us(20);
+ PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT); // RDY: low
+ return code;
}
inline
return matrix[row];
}
-void matrix_print(void)
+void led_set(uint8_t usb_led)
{
- 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;
+ // https://archive.org/stream/PC9800TechnicalDataBookHARDWARE1993/PC-9800TechnicalDataBook_HARDWARE1993#page/n161
+ // http://www.webtech.co.jp/company/doc/undocumented_mem/io_kb.txt
+ pc98_led = 0x70;
+ if (usb_led & (1<<USB_LED_NUM_LOCK)) pc98_led |= (1<<0);
+ if (usb_led & (1<<USB_LED_CAPS_LOCK)) pc98_led |= (1<<2);
+ dprintf("usb_led: %02X\n", usb_led);
+ dprintf("pc98_led: %02X\n", pc98_led);
}