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pc98_usb: Update reset and LED control command

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This commit is contained in:
tmk 2018-09-08 21:23:30 +09:00
parent cb1f428488
commit 5d24932e78
3 changed files with 68 additions and 34 deletions
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77
converter/pc98_usb/matrix.c
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@ -68,23 +68,34 @@ static int16_t pc98_wait_response(void)
static void pc98_inhibit_repeat(void)
{
uint16_t code;
// clear recv buffer
while (serial_recv()) ;
RETRY:
_delay_ms(100);
pc98_send(0x9C);
code = pc98_wait_response();
if (code != -1) xprintf("PC98: send 9C: %02X\n", code);
if (code != 0xFA) goto RETRY;
_delay_ms(100);
pc98_send(0x70);
code = pc98_wait_response();
if (code != -1) xprintf("PC98: send 70: %02X\n", code);
if (code != 0xFA) goto RETRY;
}
static uint8_t pc98_led = 0;
static void pc98_led_set(void)
{
uint16_t code;
RETRY:
pc98_send(0x9D);
code = pc98_wait_response();
if (code != -1) xprintf("PC98: send 9D: %02X\n", code);
if (code != 0xFA) goto RETRY;
pc98_send(pc98_led);
code = pc98_wait_response();
if (code != -1) xprintf("PC98: send %02X: %02X\n", pc98_led, code);
if (code != 0xFA) goto RETRY;
}
void matrix_init(void)
{
debug_keyboard = true;
@ -99,36 +110,40 @@ void matrix_init(void)
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
_delay_ms(500);
_delay_ms(50);
pc98_inhibit_repeat();
// PC98 ready
PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
// 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
print("matrix_init done.\n");
return;
}
uint8_t matrix_scan(void)
{
uint16_t code;
PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
//_delay_us(30);
code = serial_recv2();
PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
if (code == -1) return 0;
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;
}
print_hex8(code); print(" ");
@ -154,15 +169,11 @@ uint8_t matrix_get_row(uint8_t row)
void led_set(uint8_t usb_led)
{
#ifdef PC98_LED_CONTROL
uint8_t led_state = 0x70;
if (usb_led & (1<<USB_LED_NUM_LOCK)) led_state |= (1<<0);
if (usb_led & (1<<USB_LED_CAPS_LOCK)) led_state |= (1<<2);
xprintf("led_set: %02X\n", led_state);
pc98_send(0x9D);
_delay_ms(100);
pc98_send(led_state);
// responses(FA or FC) will be ignored in matrix_scan()
#endif
// 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);
xprintf("usb_led: %02X\n", usb_led);
xprintf("pc98_led: %02X\n", pc98_led);
}