MacintoshKeyboardRemapper/MacintoshKeyboardRemapper.ino
2019-09-30 23:58:02 +02:00

121 lines
2.6 KiB
C++

#define CLK_MAC 5
#define DATA_MAC 6
#define CLK_KBD 7
#define DATA_KBD 8
#define CLOCK_START_MSEC 500
#define CLOCK_TRANSITION_USEC 300
#define CLOCK_READ_LOW_USEC 180
#define CLOCK_READ_HIGH_USEC 200
#define CLOCK_WRITE_LOW_USEC 180
#define CLOCK_WRITE_HIGH_USEC 200
#define MAC_RESP_DELAY_MSEC 240
#define MAC_DETECT_READY_USEC 300
// command constants
const byte MODEL_NUMBER_CMD = 0x16;
const byte TEST_CMD = 0x36;
const byte INQUIRY_CMD = 0x10;
const byte INSTANT_CMD = 0x14;
// command response constants
const byte NULL_TRANSITION = 0x7B;
const byte TEST_ACK = 0x7D;
const byte TEST_NAK = 0x77;
const byte BAD_CMD = 0x00;
enum kbd_state {
REQUIRE_MODEL_NUMBER,
READ_MODEL_NUMBER,
REQUIRE_TEST,
READ_TEST,
REQUIRE_INQUIRY,
READ_INQUIRY,
DELAY_INQUIRY
};
enum mac_state {
DETECT_READY_FOR_CMD,
READ_CMD,
DETECT_READY_FOR_DATA,
WRITE_DATA
};
// keyboard state variables
kbd_state keyboard_state = REQUIRE_MODEL_NUMBER;
boolean kbd_clock_detected;
boolean kbd_clock_state;
boolean kbd_clock_read;
unsigned int kbd_clock_count;
unsigned long kbd_clock_start;
unsigned long kbd_clock_transition_start;
unsigned long kbd_delay_start;
byte kbd_data_read;
byte kbd_last_data_read[4];
short kbd_last_data_read_index = -1;
byte model_number;
// macintosh state variables
mac_state macintosh_state = DETECT_READY_FOR_CMD;
boolean mac_ready_detected;
unsigned long mac_delay_start;
boolean mac_clock_started;
boolean mac_clock_state;
unsigned int mac_clock_count;
unsigned long mac_clock_delay_start;
unsigned long mac_cmd_response_delay_start;
byte mac_data_read;
byte last_mac_cmd;
byte mac_data_write;
void setup() {
pinMode(CLK_MAC, OUTPUT);
digitalWrite(CLK_MAC, HIGH);
pinMode(CLK_KBD, INPUT);
kbd_hard_reset();
//Serial.begin(19200);
}
void loop() {
switch (keyboard_state) {
case REQUIRE_MODEL_NUMBER:
send_data_to_kbd(MODEL_NUMBER_CMD, READ_MODEL_NUMBER);
break;
case READ_MODEL_NUMBER:
read_data_from_kbd(REQUIRE_TEST);
break;
case REQUIRE_TEST:
send_data_to_kbd(TEST_CMD, READ_TEST);
break;
case READ_TEST:
read_data_from_kbd(REQUIRE_INQUIRY);
break;
case REQUIRE_INQUIRY:
send_data_to_kbd(INQUIRY_CMD, READ_INQUIRY);
break;
case READ_INQUIRY:
read_data_from_kbd(REQUIRE_INQUIRY);
break;
}
switch (macintosh_state) {
case DETECT_READY_FOR_CMD:
mac_detect_ready_to_send_cmd();
break;
case READ_CMD:
mac_read_data();
break;
case DETECT_READY_FOR_DATA:
mac_detect_ready_to_recv_data();
break;
case WRITE_DATA:
mac_write_data();
break;
}
}