diff options
Diffstat (limited to 'converter/ibm4704_usb')
| -rw-r--r-- | converter/ibm4704_usb/README.md | 1 | ||||
| -rw-r--r-- | converter/ibm4704_usb/config.h | 6 | ||||
| -rw-r--r-- | converter/ibm4704_usb/ibm4704.txt | 11 | ||||
| -rw-r--r-- | converter/ibm4704_usb/matrix.c | 30 |
4 files changed, 23 insertions, 25 deletions
diff --git a/converter/ibm4704_usb/README.md b/converter/ibm4704_usb/README.md index 25b72ba671..15c826ab8b 100644 --- a/converter/ibm4704_usb/README.md +++ b/converter/ibm4704_usb/README.md @@ -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. diff --git a/converter/ibm4704_usb/config.h b/converter/ibm4704_usb/config.h index 4f267b3b7a..2fee10fd61 100644 --- a/converter/ibm4704_usb/config.h +++ b/converter/ibm4704_usb/config.h @@ -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 diff --git a/converter/ibm4704_usb/ibm4704.txt b/converter/ibm4704_usb/ibm4704.txt index 9c4895d922..e2d42f08fd 100644 --- a/converter/ibm4704_usb/ibm4704.txt +++ b/converter/ibm4704_usb/ibm4704.txt @@ -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. diff --git a/converter/ibm4704_usb/matrix.c b/converter/ibm4704_usb/matrix.c index 5f928d716f..155df9c38f 100644 --- a/converter/ibm4704_usb/matrix.c +++ b/converter/ibm4704_usb/matrix.c @@ -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(); } |