@@ -8,6 +8,7 @@ Keyboard initialization process takes a few seconds at start up. During that you | |||
Update | |||
------ | |||
2015/05/05 Added keymaps for 107-key, 77-key and 50-key. Thanks, orihalcon @ geekhack! | |||
2015/05/19 Fixed a protocol handling bug. | |||
@@ -51,9 +51,9 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. | |||
#define IBM4704_DATA_DDR DDRD | |||
#define IBM4704_DATA_BIT 0 | |||
/* Pin interrupt on rising edge */ | |||
#define IBM4704_INT_INIT() do { EICRA |= ((1<<ISC11)|(0<<ISC10)); } while (0) | |||
#define IBM4704_INT_ON() do { EIMSK |= (1<<INT1); } while (0) | |||
/* Pin interrupt on rising edge of clock */ | |||
#define IBM4704_INT_INIT() do { EICRA |= ((1<<ISC11)|(1<<ISC10)); } while (0) | |||
#define IBM4704_INT_ON() do { EIFR |= (1<<INTF1); EIMSK |= (1<<INT1); } while (0) | |||
#define IBM4704_INT_OFF() do { EIMSK &= ~(1<<INT1); } while (0) | |||
#define IBM4704_INT_VECT INT1_vect | |||
@@ -57,15 +57,15 @@ Keyboard to Host | |||
---------------- | |||
Data bits are LSB first and Pairty is odd. Clock has around 60us high and 30us low part. | |||
____ __ __ __ __ __ __ __ __ __ ________ | |||
Clock \____/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ | |||
____ __ __ __ __ __ __ __ __ __ _______ | |||
Clock \_____/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ | |||
____ ____ ____ ____ ____ ____ ____ ____ ____ ____ | |||
Data ____/ X____X____X____X____X____X____X____X____X____X________ | |||
Start 0 1 2 3 4 5 6 7 P Stop | |||
Start bit: can be long as 300-350us. | |||
Inhibit: Pull Data line down to inhibit keyboard to send. | |||
Timing: Host reads bit while Clock is hi. | |||
Timing: Host reads bit while Clock is hi.(rising edge) | |||
Stop bit: Keyboard pulls down Data line to lo after 9th clock. | |||
@@ -166,13 +166,14 @@ Data sent from host: | |||
| `-----`--- scan code | |||
`------------- enable bit(0: enable repeat, 1: enable break) | |||
00-77 Enable repeat(78-7F: invalid scancode) | |||
80-F7 Enable break(F8-FF: invalid scancode) | |||
00-79 Enable repeat | |||
80-F9 Enable break(FA-FF are used as other commands, see above.) | |||
FE Resend(011ah) no need to use | |||
FF End(0114h) exits FC command mode. | |||
Response from keyboard: | |||
FD Out of bound - Invalid scancode | |||
-- OK - No response means that command is accepted. | |||
Examples: | |||
To enable break code of all keys. |
@@ -67,35 +67,31 @@ uint8_t matrix_cols(void) | |||
static void enable_break(void) | |||
{ | |||
uint8_t ret; | |||
print("Enable break: "); | |||
// valid scancode: 00-79h | |||
for (uint8_t code = 0; code < 0x7A; code++) { | |||
while (ibm4704_send(0x80|code)) _delay_ms(1); | |||
// get none when ok, get FD when out of bound | |||
_delay_ms(5); | |||
if ((ret = ibm4704_recv()) != 0xff) { | |||
xprintf("c%02X:r%02X ", code, ret); | |||
} | |||
_delay_ms(1); | |||
while (ibm4704_send(0x80|code)) _delay_ms(10); | |||
_delay_ms(5); // wait for response | |||
// No response(FF) when ok, FD when out of bound | |||
xprintf("s%02X:r%02X ", code, ibm4704_recv()); | |||
} | |||
_delay_us(1000); | |||
while (ibm4704_send(0xFF)) { _delay_ms(1); } // End | |||
while (ibm4704_send(0xFF)) { _delay_ms(10); } // End | |||
print("End\n"); | |||
} | |||
void matrix_init(void) | |||
{ | |||
debug_enable = true; | |||
void matrix_setup(void) | |||
{ | |||
ibm4704_init(); | |||
matrix_clear(); | |||
} | |||
_delay_ms(2000); // wait for starting up debug console | |||
void matrix_init(void) | |||
{ | |||
debug_enable = true; | |||
print("IBM 4704 converter\n"); | |||
while (ibm4704_send(0xFE)) _delay_ms(1); // resend | |||
_delay_ms(5); | |||
matrix_clear(); | |||
_delay_ms(2000); // wait for keyboard starting up | |||
xprintf("Keyboard ID: %02X\n", ibm4704_recv()); | |||
enable_break(); | |||
} |
@@ -85,6 +85,8 @@ void suspend_power_down(void) | |||
power_down(WDTO_15MS); | |||
} | |||
__attribute__ ((weak)) void matrix_power_up(void) {} | |||
__attribute__ ((weak)) void matrix_power_down(void) {} | |||
bool suspend_wakeup_condition(void) | |||
{ | |||
matrix_power_up(); |
@@ -62,6 +62,12 @@ static bool has_ghost_in_row(uint8_t row) | |||
#endif | |||
__attribute__ ((weak)) void matrix_setup(void) {} | |||
void keyboard_setup(void) | |||
{ | |||
matrix_setup(); | |||
} | |||
void keyboard_init(void) | |||
{ | |||
timer_init(); |
@@ -58,13 +58,15 @@ static inline bool IS_RELEASED(keyevent_t event) { return (!IS_NOEVENT(event) && | |||
} | |||
/* it runs once at early stage of startup before keyboard_init. */ | |||
void keyboard_setup(void); | |||
/* it runs once after initializing host side protocol, debug and MCU peripherals. */ | |||
void keyboard_init(void); | |||
/* it runs repeatedly in main loop */ | |||
void keyboard_task(void); | |||
/* it runs when host LED status is updated */ | |||
void keyboard_set_leds(uint8_t leds); | |||
__attribute__ ((weak)) void matrix_power_up(void) {} | |||
__attribute__ ((weak)) void matrix_power_down(void) {} | |||
#ifdef __cplusplus | |||
} | |||
#endif |
@@ -43,7 +43,9 @@ extern "C" { | |||
uint8_t matrix_rows(void); | |||
/* number of matrix columns */ | |||
uint8_t matrix_cols(void); | |||
/* intialize matrix for scaning. should be called once. */ | |||
/* should be called at early stage of startup before matrix_init.(optional) */ | |||
void matrix_setup(void); | |||
/* intialize matrix for scaning. */ | |||
void matrix_init(void); | |||
/* scan all key states on matrix */ | |||
uint8_t matrix_scan(void); |
@@ -21,9 +21,10 @@ uint8_t ibm4704_error = 0; | |||
void ibm4704_init(void) | |||
{ | |||
inhibit(); // keep keyboard from sending | |||
IBM4704_INT_INIT(); | |||
IBM4704_INT_ON(); | |||
idle(); | |||
idle(); // allow keyboard sending | |||
} | |||
/* | |||
@@ -104,51 +105,44 @@ uint8_t ibm4704_recv_response(void) | |||
return rbuf_dequeue(); | |||
} | |||
uint8_t ibm4704_recv(void) | |||
{ | |||
if (rbuf_has_data()) { | |||
return rbuf_dequeue(); | |||
} else { | |||
return -1; | |||
} | |||
} | |||
/* | |||
Keyboard to Host | |||
---------------- | |||
Data bits are LSB first and Parity is odd. Clock has around 60us high and 30us low part. | |||
____ __ __ __ __ __ __ __ __ __ ________ | |||
Clock \____/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ | |||
____ __ __ __ __ __ __ __ __ __ _______ | |||
Clock \_____/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ | |||
____ ____ ____ ____ ____ ____ ____ ____ ____ ____ | |||
Data ____/ X____X____X____X____X____X____X____X____X____X________ | |||
Start 0 1 2 3 4 5 6 7 P Stop | |||
Start bit: can be long as 300-350us. | |||
Inhibit: Pull Data line down to inhibit keyboard to send. | |||
Timing: Host reads bit while Clock is hi. | |||
Timing: Host reads bit while Clock is hi.(rising edge) | |||
Stop bit: Keyboard pulls down Data line to lo after 9th clock. | |||
*/ | |||
uint8_t ibm4704_recv(void) | |||
{ | |||
if (rbuf_has_data()) { | |||
return rbuf_dequeue(); | |||
} else { | |||
return -1; | |||
} | |||
} | |||
ISR(IBM4704_INT_VECT) | |||
{ | |||
static enum { | |||
INIT, START, BIT0, BIT1, BIT2, BIT3, BIT4, BIT5, BIT6, BIT7, PARITY, | |||
} state = INIT; | |||
BIT0, BIT1, BIT2, BIT3, BIT4, BIT5, BIT6, BIT7, PARITY, STOP | |||
} state = BIT0; | |||
// LSB first | |||
static uint8_t data = 0; | |||
// Odd parity | |||
static uint8_t parity = false; | |||
ibm4704_error = 0; | |||
// return unless falling edge | |||
if (clock_in()) { goto RETURN; } // why this occurs? | |||
state++; | |||
switch (state) { | |||
case START: | |||
// Data:Low | |||
WAIT(data_hi, 10, state); | |||
break; | |||
case BIT0: | |||
case BIT1: | |||
case BIT2: | |||
@@ -169,6 +163,10 @@ ISR(IBM4704_INT_VECT) | |||
} | |||
if (!parity) | |||
goto ERROR; | |||
break; | |||
case STOP: | |||
// Data:Low | |||
WAIT(data_lo, 100, state); | |||
rbuf_enqueue(data); | |||
ibm4704_error = IBM4704_ERR_NONE; | |||
goto DONE; | |||
@@ -176,13 +174,14 @@ ISR(IBM4704_INT_VECT) | |||
default: | |||
goto ERROR; | |||
} | |||
state++; | |||
goto RETURN; | |||
ERROR: | |||
ibm4704_error = state; | |||
while (ibm4704_send(0xFE)) _delay_ms(1); // resend | |||
xprintf("R:%02X%02X\n", state, data); | |||
DONE: | |||
state = INIT; | |||
state = BIT0; | |||
data = 0; | |||
parity = false; | |||
RETURN: |
@@ -544,7 +544,7 @@ int8_t sendchar(uint8_t c) | |||
/******************************************************************************* | |||
* main | |||
******************************************************************************/ | |||
static void SetupHardware(void) | |||
static void setup_mcu(void) | |||
{ | |||
/* Disable watchdog if enabled by bootloader/fuses */ | |||
MCUSR &= ~(1 << WDRF); | |||
@@ -552,7 +552,10 @@ static void SetupHardware(void) | |||
/* Disable clock division */ | |||
clock_prescale_set(clock_div_1); | |||
} | |||
static void setup_usb(void) | |||
{ | |||
// Leonardo needs. Without this USB device is not recognized. | |||
USB_Disable(); | |||
@@ -566,7 +569,9 @@ static void SetupHardware(void) | |||
int main(void) __attribute__ ((weak)); | |||
int main(void) | |||
{ | |||
SetupHardware(); | |||
setup_mcu(); | |||
keyboard_setup(); | |||
setup_usb(); | |||
sei(); | |||
/* wait for USB startup & debug output */ |
@@ -46,6 +46,8 @@ int main(void) | |||
// set for 16 MHz clock | |||
CPU_PRESCALE(0); | |||
keyboard_setup(); | |||
// Initialize the USB, and then wait for the host to set configuration. | |||
// If the Teensy is powered without a PC connected to the USB port, | |||
// this will wait forever. |