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core: Add adb_host_talk()

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This commit is contained in:
tmk 2016-05-19 16:25:13 +09:00
parent 75854878cc
commit d702fe7504
2 changed files with 70 additions and 52 deletions
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90
tmk_core/protocol/adb.c
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@ -60,7 +60,6 @@ static inline void place_bit1(void);
static inline void send_byte(uint8_t data);
static inline uint16_t wait_data_lo(uint16_t us);
static inline uint16_t wait_data_hi(uint16_t us);
static inline uint16_t adb_host_dev_recv(uint8_t device);
void adb_host_init(void)
@ -87,49 +86,9 @@ bool adb_host_psw(void)
* <http://geekhack.org/index.php?topic=14290.msg1068919#msg1068919>
* <http://geekhack.org/index.php?topic=14290.msg1070139#msg1070139>
*/
// ADB Bit Cells
//
// bit cell time: 70-130us
// low part of bit0: 60-70% of bit cell
// low part of bit1: 30-40% of bit cell
//
// bit cell time 70us 130us
// --------------------------------------------
// low part of bit0 42-49 78-91
// high part of bit0 21-28 39-52
// low part of bit1 21-28 39-52
// high part of bit1 42-49 78-91
//
//
// bit0:
// 70us bit cell:
// ____________~~~~~~
// 42-49 21-28
//
// 130us bit cell:
// ____________~~~~~~
// 78-91 39-52
//
// bit1:
// 70us bit cell:
// ______~~~~~~~~~~~~
// 21-28 42-49
//
// 130us bit cell:
// ______~~~~~~~~~~~~
// 39-52 78-91
//
// [from Apple IIgs Hardware Reference Second Edition]
enum {
ADDR_KEYB = 0x20,
ADDR_MOUSE = 0x30
};
uint16_t adb_host_kbd_recv(void)
{
return adb_host_dev_recv(ADDR_KEYB);
return adb_host_talk(ADB_ADDR_KEYBOARD, ADB_REG_0);
}
#ifdef ADB_MOUSE_ENABLE
@ -139,16 +98,16 @@ void adb_mouse_init(void) {
uint16_t adb_host_mouse_recv(void)
{
return adb_host_dev_recv(ADDR_MOUSE);
return adb_host_talk(ADB_ADDR_MOUSE, ADB_REG_0);
}
#endif
static inline uint16_t adb_host_dev_recv(uint8_t device)
uint16_t adb_host_talk(uint8_t addr, uint8_t reg)
{
uint16_t data = 0;
cli();
attention();
send_byte(device|0x0C); // Addr:Keyboard(0010)/Mouse(0011), Cmd:Talk(11), Register0(00)
send_byte((addr<<4) | (ADB_CMD_TALK<<2) | reg);
place_bit0(); // Stopbit(0)
if (!wait_data_hi(500)) { // Service Request(310us Adjustable Keyboard): just ignored
sei();
@ -474,5 +433,46 @@ Keyboard LEDs & state of keys(Register2)
| +----------------------------- Delete
+------------------------------- Reserved
ADB Bit Cells
bit cell time: 70-130us
low part of bit0: 60-70% of bit cell
low part of bit1: 30-40% of bit cell
bit cell time 70us 130us
--------------------------------------------
low part of bit0 42-49 78-91
high part of bit0 21-28 39-52
low part of bit1 21-28 39-52
high part of bit1 42-49 78-91
bit0:
70us bit cell:
____________~~~~~~
42-49 21-28
130us bit cell:
____________~~~~~~
78-91 39-52
bit1:
70us bit cell:
______~~~~~~~~~~~~
21-28 42-49
130us bit cell:
______~~~~~~~~~~~~
39-52 78-91
[from Apple IIgs Hardware Reference Second Edition]
Keyboard Handle ID
Apple Standard Keyboard M0116: 0x01
Apple Extended Keyboard M0115: 0x02
Apple Extended Keyboard II M3501: 0x02
Apple Adjustable Keybaord: 0x10
http://lxr.free-electrons.com/source/drivers/macintosh/adbhid.c?v=4.4#L802
END_OF_ADB
*/

18
tmk_core/protocol/adb.h
View File

@ -52,11 +52,29 @@ POSSIBILITY OF SUCH DAMAGE.
#define ADB_CAPS 0x39
/* ADB commands */
#define ADB_ADDR_KEYBOARD 2
#define ADB_ADDR_MOUSE 3
#define ADB_CMD_LISTEN 2
#define ADB_CMD_TALK 3
#define ADB_REG_0 0
#define ADB_REG_1 1
#define ADB_REG_2 2
#define ADB_REG_3 3
/* ADB keyboard handle id */
#define ADB_HANDLE_M0116 0x01
#define ADB_HANDLE_M0115 0x02
#define ADB_HANDLE_M3501 0x02
#define ADB_HANDLE_M1242 0x10
// ADB host
void adb_host_init(void);
bool adb_host_psw(void);
uint16_t adb_host_kbd_recv(void);
uint16_t adb_host_mouse_recv(void);
uint16_t adb_host_talk(uint8_t addr, uint8_t reg);
void adb_host_listen(uint8_t cmd, uint8_t data_h, uint8_t data_l);
void adb_host_kbd_led(uint8_t led);
void adb_mouse_task(void);