Update ADB impelemtation in TMK Core (#11168)
* Update ADB impelmentation in tmk_core to recent version. Pcked from tmk_keyboard repository revision: 48d696443857512d45f9a7329e0dd0a76345860f * Restore convenient ADB functions used in QMK port. * Do cformat.
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2 changed files with 229 additions and 85 deletions
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@ -1,5 +1,5 @@
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/*
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Copyright 2011 Jun WAKO <wakojun@gmail.com>
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Copyright 2011-19 Jun WAKO <wakojun@gmail.com>
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Copyright 2013 Shay Green <gblargg@gmail.com>
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This software is licensed with a Modified BSD License.
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@ -41,6 +41,7 @@ POSSIBILITY OF SUCH DAMAGE.
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#include "adb.h"
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#include "print.h"
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// GCC doesn't inline functions normally
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#define data_lo() (ADB_DDR |= (1 << ADB_DATA_BIT))
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@ -59,7 +60,6 @@ static inline void place_bit1(void);
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static inline void send_byte(uint8_t data);
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static inline uint16_t wait_data_lo(uint16_t us);
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static inline uint16_t wait_data_hi(uint16_t us);
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static inline uint16_t adb_host_dev_recv(uint8_t device);
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void adb_host_init(void) {
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ADB_PORT &= ~(1 << ADB_DATA_BIT);
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@ -81,119 +81,164 @@ bool adb_host_psw(void) { return psw_in(); }
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* <http://geekhack.org/index.php?topic=14290.msg1068919#msg1068919>
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* <http://geekhack.org/index.php?topic=14290.msg1070139#msg1070139>
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*/
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// ADB Bit Cells
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//
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// bit cell time: 70-130us
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// low part of bit0: 60-70% of bit cell
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// low part of bit1: 30-40% of bit cell
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//
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// bit cell time 70us 130us
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// --------------------------------------------
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// low part of bit0 42-49 78-91
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// high part of bit0 21-28 39-52
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// low part of bit1 21-28 39-52
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// high part of bit1 42-49 78-91
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//
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//
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// bit0:
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// 70us bit cell:
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// ____________~~~~~~
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// 42-49 21-28
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//
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// 130us bit cell:
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// ____________~~~~~~
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// 78-91 39-52
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//
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// bit1:
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// 70us bit cell:
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// ______~~~~~~~~~~~~
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// 21-28 42-49
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//
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// 130us bit cell:
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// ______~~~~~~~~~~~~
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// 39-52 78-91
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//
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// [from Apple IIgs Hardware Reference Second Edition]
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enum { ADDR_KEYB = 0x20, ADDR_MOUSE = 0x30 };
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uint16_t adb_host_kbd_recv(void) { return adb_host_dev_recv(ADDR_KEYB); }
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uint16_t adb_host_kbd_recv(void) { return adb_host_talk(ADB_ADDR_KEYBOARD, ADB_REG_0); }
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#ifdef ADB_MOUSE_ENABLE
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void adb_mouse_init(void) { return; }
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__attribute__((weak)) void adb_mouse_init(void) { return; }
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uint16_t adb_host_mouse_recv(void) { return adb_host_dev_recv(ADDR_MOUSE); }
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__attribute__((weak)) void adb_mouse_task(void) { return; }
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uint16_t adb_host_mouse_recv(void) { return adb_host_talk(ADB_ADDR_MOUSE, ADB_REG_0); }
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#endif
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static inline uint16_t adb_host_dev_recv(uint8_t device) {
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uint16_t data = 0;
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// This sends Talk command to read data from register and returns length of the data.
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uint8_t adb_host_talk_buf(uint8_t addr, uint8_t reg, uint8_t *buf, uint8_t len) {
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for (int8_t i = 0; i < len; i++) buf[i] = 0;
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cli();
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attention();
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send_byte(device | 0x0C); // Addr:Keyboard(0010)/Mouse(0011), Cmd:Talk(11), Register0(00)
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place_bit0(); // Stopbit(0)
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send_byte((addr << 4) | ADB_CMD_TALK | reg);
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place_bit0(); // Stopbit(0)
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// TODO: Service Request(Srq):
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// Device holds low part of comannd stopbit for 140-260us
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//
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// Command:
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// ......._ ______________________ ___ ............_ -------
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// | | | | | | |
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// Command | | | | | Data bytes | |
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// ........|___| | 140-260 |__| |_............|___|
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// |stop0 | Tlt Stop-to-Start |start1| |stop0 |
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//
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// Command without data:
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// ......._ __________________________
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// | |
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// Command | |
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// ........|___| | 140-260 |
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// |stop0 | Tlt Stop-to-Start |
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//
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// Service Request:
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// ......._ ______ ___ ............_ -------
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// | 140-260 | | | | | |
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// Command | Service Request | | | | Data bytes | |
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// ........|___________________| |__| |_............|___|
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// |stop0 | |start1| |stop0 |
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// ......._ __________
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// | 140-260 |
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// Command | Service Request |
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// ........|___________________|
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// |stop0 |
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// This can be happened?
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// ......._ ______________________ ___ ............_ -----
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// | | | | | | 140-260 |
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// Command | | | | | Data bytes | Service Request |
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// ........|___| | 140-260 |__| |_............|_________________|
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// |stop0 | Tlt Stop-to-Start |start1| |stop0 |
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//
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// "Service requests are issued by the devices during a very specific time at the
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// end of the reception of the command packet.
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// If a device in need of service issues a service request, it must do so within
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// the 65 µs of the Stop Bit’s low time and maintain the line low for a total of 300 µs."
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//
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// "A device sends a Service Request signal by holding the bus low during the low
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// portion of the stop bit of any command or data transaction. The device must lengthen
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// the stop by a minimum of 140 J.lS beyond its normal duration, as shown in Figure 8-15."
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// http://ww1.microchip.com/downloads/en/AppNotes/00591b.pdf
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if (!wait_data_hi(500)) { // Service Request(310us Adjustable Keyboard): just ignored
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xprintf("R");
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sei();
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return -30; // something wrong
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return 0;
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}
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if (!wait_data_lo(500)) { // Tlt/Stop to Start(140-260us)
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sei();
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return 0; // No data to send
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return 0; // No data from device(not error);
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}
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uint8_t n = 17; // start bit + 16 data bits
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// start bit(1)
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if (!wait_data_hi(40)) {
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xprintf("S");
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sei();
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return 0;
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}
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if (!wait_data_lo(100)) {
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xprintf("s");
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sei();
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return 0;
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}
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uint8_t n = 0; // bit count
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do {
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//
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// |<- bit_cell_max(130) ->|
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// | |<- lo ->|
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// | | |<-hi->|
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// _______
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// | | |
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// | 130-lo | lo-hi |
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// |________| |
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//
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uint8_t lo = (uint8_t)wait_data_hi(130);
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if (!lo) goto error;
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if (!lo) goto error; // no more bit or after stop bit
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uint8_t hi = (uint8_t)wait_data_lo(lo);
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if (!hi) goto error;
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if (!hi) goto error; // stop bit extedned by Srq?
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hi = lo - hi;
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lo = 130 - lo;
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if (n / 8 >= len) continue; // can't store in buf
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data <<= 1;
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if (lo < hi) {
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data |= 1;
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} else if (n == 17) {
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sei();
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return -20;
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buf[n / 8] <<= 1;
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if ((130 - lo) < (lo - hi)) {
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buf[n / 8] |= 1;
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}
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} while (--n);
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// Stop bit can't be checked normally since it could have service request lenghtening
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// and its high state never goes low.
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if (!wait_data_hi(351) || wait_data_lo(91)) {
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sei();
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return -21;
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}
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sei();
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return data;
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} while (++n);
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error:
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sei();
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return -n;
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return n / 8;
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}
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void adb_host_listen(uint8_t cmd, uint8_t data_h, uint8_t data_l) {
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uint16_t adb_host_talk(uint8_t addr, uint8_t reg) {
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uint8_t len;
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uint8_t buf[8];
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len = adb_host_talk_buf(addr, reg, buf, 8);
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if (len != 2) return 0;
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return (buf[0] << 8 | buf[1]);
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}
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void adb_host_listen_buf(uint8_t addr, uint8_t reg, uint8_t *buf, uint8_t len) {
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cli();
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attention();
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send_byte(cmd);
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place_bit0(); // Stopbit(0)
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send_byte((addr << 4) | ADB_CMD_LISTEN | reg);
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place_bit0(); // Stopbit(0)
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// TODO: Service Request
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_delay_us(200); // Tlt/Stop to Start
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place_bit1(); // Startbit(1)
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send_byte(data_h);
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send_byte(data_l);
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for (int8_t i = 0; i < len; i++) {
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send_byte(buf[i]);
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// xprintf("%02X ", buf[i]);
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}
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place_bit0(); // Stopbit(0);
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sei();
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}
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void adb_host_listen(uint8_t addr, uint8_t reg, uint8_t data_h, uint8_t data_l) {
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uint8_t buf[2] = {data_h, data_l};
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adb_host_listen_buf(addr, reg, buf, 2);
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}
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void adb_host_flush(uint8_t addr) {
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cli();
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attention();
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send_byte((addr << 4) | ADB_CMD_FLUSH);
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place_bit0(); // Stopbit(0)
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_delay_us(200); // Tlt/Stop to Start
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sei();
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}
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// send state of LEDs
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void adb_host_kbd_led(uint8_t led) {
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// Addr:Keyboard(0010), Cmd:Listen(10), Register2(10)
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// send upper byte (not used)
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// send lower byte (bit2: ScrollLock, bit1: CapsLock, bit0:
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adb_host_listen(0x2A, 0, led & 0x07);
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// Listen Register2
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// upper byte: not used
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// lower byte: bit2=ScrollLock, bit1=CapsLock, bit0=NumLock
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adb_host_listen(ADB_ADDR_KEYBOARD, ADB_REG_2, 0, led & 0x07);
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}
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#ifdef ADB_PSW_BIT
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@ -327,7 +372,7 @@ Commands
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bits commands
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------------------------------------------------------
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- - - - 0 0 0 0 Send Request(reset all devices)
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- - - - 0 0 0 0 Send Reset(reset all devices)
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A A A A 0 0 0 1 Flush(reset a device)
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- - - - 0 0 1 0 Reserved
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- - - - 0 0 1 1 Reserved
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@ -435,5 +480,56 @@ Keyboard LEDs & state of keys(Register2)
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| +----------------------------- Delete
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+------------------------------- Reserved
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Address, Handler ID and bits(Register3)
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1514131211 . . 8 7 . . . . . . 0
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| | | | | | | | | | | | | | | |
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| | | | | | | | +-+-+-+-+-+-+-+- Handler ID
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| | | | +-+-+-+----------------- Address
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| | | +------------------------- 0
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| | +--------------------------- Service request enable(1 = enabled)
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| +----------------------------- Exceptional event(alwyas 1 if not used)
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+------------------------------- 0
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ADB Bit Cells
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bit cell time: 70-130us
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low part of bit0: 60-70% of bit cell
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low part of bit1: 30-40% of bit cell
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bit cell time 70us 130us
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--------------------------------------------
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low part of bit0 42-49 78-91
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high part of bit0 21-28 39-52
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low part of bit1 21-28 39-52
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high part of bit1 42-49 78-91
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bit0:
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70us bit cell:
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____________~~~~~~
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42-49 21-28
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130us bit cell:
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____________~~~~~~
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78-91 39-52
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bit1:
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70us bit cell:
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______~~~~~~~~~~~~
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21-28 42-49
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130us bit cell:
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______~~~~~~~~~~~~
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39-52 78-91
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[from Apple IIgs Hardware Reference Second Edition]
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Keyboard Handle ID
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Apple Standard Keyboard M0116: 0x01
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Apple Extended Keyboard M0115: 0x02
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Apple Extended Keyboard II M3501: 0x02
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Apple Adjustable Keybaord: 0x10
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http://lxr.free-electrons.com/source/drivers/macintosh/adbhid.c?v=4.4#L802
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END_OF_ADB
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*/
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@ -1,5 +1,5 @@
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/*
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Copyright 2011 Jun WAKO <wakojun@gmail.com>
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Copyright 2011-19 Jun WAKO <wakojun@gmail.com>
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This software is licensed with a Modified BSD License.
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All of this is supposed to be Free Software, Open Source, DFSG-free,
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@ -47,12 +47,60 @@ POSSIBILITY OF SUCH DAMAGE.
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#define ADB_POWER 0x7F
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#define ADB_CAPS 0x39
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/* ADB commands */
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// Default Address
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#define ADB_ADDR_0 0
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#define ADB_ADDR_DONGLE 1
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#define ADB_ADDR_KEYBOARD 2
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#define ADB_ADDR_MOUSE 3
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#define ADB_ADDR_TABLET 4
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#define ADB_ADDR_APPLIANCE 7
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#define ADB_ADDR_8 8
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#define ADB_ADDR_9 9
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#define ADB_ADDR_10 10
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#define ADB_ADDR_11 11
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#define ADB_ADDR_12 12
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#define ADB_ADDR_13 13
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#define ADB_ADDR_14 14
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#define ADB_ADDR_15 15
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// for temporary purpose, do not use for polling
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#define ADB_ADDR_TMP 15
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#define ADB_ADDR_MOUSE_POLL 10
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// Command Type
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#define ADB_CMD_RESET 0
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#define ADB_CMD_FLUSH 1
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#define ADB_CMD_LISTEN 8
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#define ADB_CMD_TALK 12
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// Register
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#define ADB_REG_0 0
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#define ADB_REG_1 1
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#define ADB_REG_2 2
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#define ADB_REG_3 3
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/* ADB keyboard handler id */
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#define ADB_HANDLER_STD 0x01 /* IIGS, M0116 */
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#define ADB_HANDLER_AEK 0x02 /* M0115, M3501 */
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#define ADB_HANDLER_AEK_RMOD 0x03 /* M0115, M3501, alternate mode enableing right modifiers */
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#define ADB_HANDLER_STD_ISO 0x04 /* M0118, ISO swapping keys */
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#define ADB_HANDLER_AEK_ISO 0x05 /* M0115, M3501, ISO swapping keys */
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#define ADB_HANDLER_M1242_ANSI 0x10 /* Adjustable keyboard */
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#define ADB_HANDLER_CLASSIC1_MOUSE 0x01
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#define ADB_HANDLER_CLASSIC2_MOUSE 0x02
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#define ADB_HANDLER_EXTENDED_MOUSE 0x04
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#define ADB_HANDLER_TURBO_MOUSE 0x32
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// ADB host
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void adb_host_init(void);
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bool adb_host_psw(void);
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uint16_t adb_host_talk(uint8_t addr, uint8_t reg);
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uint8_t adb_host_talk_buf(uint8_t addr, uint8_t reg, uint8_t *buf, uint8_t len);
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void adb_host_listen(uint8_t addr, uint8_t reg, uint8_t data_h, uint8_t data_l);
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void adb_host_listen_buf(uint8_t addr, uint8_t reg, uint8_t *buf, uint8_t len);
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void adb_host_flush(uint8_t addr);
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void adb_host_kbd_led(uint8_t led);
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uint16_t adb_host_kbd_recv(void);
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uint16_t adb_host_mouse_recv(void);
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void adb_host_listen(uint8_t cmd, uint8_t data_h, uint8_t data_l);
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void adb_host_kbd_led(uint8_t led);
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void adb_mouse_task(void);
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void adb_mouse_init(void);
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// ADB Mouse
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void adb_mouse_task(void);
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void adb_mouse_init(void);
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