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ch376-native: keyboard: cleaner separation of concerns

pull/592/head
Dean Netherton 9 months ago
parent
e24860f474
commit
242c004749
7 changed files with 199 additions and 140 deletions
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  1. 10
      Source/HBIOS/ch376-native/Makefile
  2. 1
      Source/HBIOS/ch376-native/keyboard.s
  3. 175
      Source/HBIOS/ch376-native/keyboard/kyb_driver.c.s
  4. 74
      Source/HBIOS/ch376-native/source-doc/keyboard/kyb_driver.asm
  5. 17
      Source/HBIOS/ch376-native/source-doc/keyboard/kyb_driver.c
  6. 4
      Source/HBIOS/ch376-native/source-doc/keyboard/kyb_driver.h
  7. 56
      Source/HBIOS/ch376kyb.asm

10
Source/HBIOS/ch376-native/Makefile
View File

@ -66,14 +66,20 @@ $$(ASSDIR)$(1).s:
for dep in $$^; do
dep=$$$${dep#*/}
dep=$$$${dep#*/}
if [ -n "$$$${dep%%*.asm}" ]; then
echo '#include "'ch376-native/$(1)/$$$${dep}'"' >> $$(ASSDIR)$(1).s
else
echo '#include "'ch376-native/source-doc/$(1)/$$$${dep}'"' >> $$(ASSDIR)$(1).s
fi
done
$$(ASSDIR)$(1)/%.c.asm: $$(SRC)$(1)/%.c; $$(compile)
# $$(ASSDIR)$(1)/%.asm: $$(SRC)$(1)/%.asm; echo $$@ $$<
$(1)_C_FILES := $$(wildcard $$(SRC)$(1)/*.c)
$(1)_S_FILES := $$(patsubst ./source-doc/%, ./%, $$($(1)_C_FILES:.c=.c.s))
./$(1).s: $$($(1)_S_FILES)
$(1)_ASM_FILES := $$(wildcard $$(SRC)$(1)/*.asm)
$(1)_C_S_FILES := $$(patsubst ./source-doc/%, ./%, $$($(1)_C_FILES:.c=.c.s))
./$(1).s: $$($(1)_C_S_FILES) $$($(1)_ASM_FILES)
endef
$(eval $(call build_subsystem,base-drv))

1
Source/HBIOS/ch376-native/keyboard.s
View File

@ -3,3 +3,4 @@
#include "ch376-native/keyboard/class_hid_keyboard.c.s"
#include "ch376-native/keyboard/kyb-init.c.s"
#include "ch376-native/keyboard/kyb_driver.c.s"
#include "ch376-native/source-doc/keyboard/kyb_driver.asm"

175
Source/HBIOS/ch376-native/keyboard/kyb_driver.c.s
View File

@ -68,51 +68,51 @@ _previous:
;--------------------------------------------------------
; code
;--------------------------------------------------------
;source-doc/keyboard/kyb_driver.c:26:
;source-doc/keyboard/kyb_driver.c:28: #define EI __asm__("EI")
; ---------------------------------
; Function report_diff
; ---------------------------------
_report_diff:
;source-doc/keyboard/kyb_driver.c:27: static uint8_t report_diff() __sdcccall(1) {
;source-doc/keyboard/kyb_driver.c:29:
ld de,_report+0
;source-doc/keyboard/kyb_driver.c:28: uint8_t *a = (uint8_t *)&report;
;source-doc/keyboard/kyb_driver.c:31: uint8_t i = sizeof(report);
;source-doc/keyboard/kyb_driver.c:30: static uint8_t report_diff() __sdcccall(1) {
;source-doc/keyboard/kyb_driver.c:33:
ld b,0x08
ld hl,_previous
l_report_diff_00103:
;source-doc/keyboard/kyb_driver.c:32: do {
;source-doc/keyboard/kyb_driver.c:34: uint8_t i = sizeof(report);
ld a, (de)
inc de
ld c, (hl)
inc hl
sub c
jr Z,l_report_diff_00104
;source-doc/keyboard/kyb_driver.c:33: if (*a++ != *b++)
;source-doc/keyboard/kyb_driver.c:35: do {
ld a,0x01
jr l_report_diff_00106
l_report_diff_00104:
;source-doc/keyboard/kyb_driver.c:34: return true;
;source-doc/keyboard/kyb_driver.c:36: if (*a++ != *b++)
djnz l_report_diff_00103
;source-doc/keyboard/kyb_driver.c:36:
;source-doc/keyboard/kyb_driver.c:38: } while (--i != 0);
xor a
l_report_diff_00106:
;source-doc/keyboard/kyb_driver.c:37: return false;
ret
;source-doc/keyboard/kyb_driver.c:39:
ret
;source-doc/keyboard/kyb_driver.c:41: }
; ---------------------------------
; Function report_put
; ---------------------------------
_report_put:
;source-doc/keyboard/kyb_driver.c:40: static void report_put() {
;source-doc/keyboard/kyb_driver.c:42:
ld a, (_alt_write_index)
inc a
and 0x07
ld c, a
;source-doc/keyboard/kyb_driver.c:42:
;source-doc/keyboard/kyb_driver.c:44: uint8_t next_write_index = (alt_write_index + 1) & KEYBOARD_BUFFER_SIZE_MASK;
ld a,(_alt_read_index)
sub c
ret Z
;source-doc/keyboard/kyb_driver.c:43: if (next_write_index != alt_read_index) { // Check if buffer is not full
;source-doc/keyboard/kyb_driver.c:45:
ld de,_reports+0
ld hl, (_alt_write_index)
ld h,0x00
@ -126,52 +126,52 @@ _report_put:
ld hl,_report
ldir
pop bc
;source-doc/keyboard/kyb_driver.c:44: reports[alt_write_index] = report;
;source-doc/keyboard/kyb_driver.c:46: if (next_write_index != alt_read_index) { // Check if buffer is not full
ld hl,_alt_write_index
ld (hl), c
;source-doc/keyboard/kyb_driver.c:46: }
;source-doc/keyboard/kyb_driver.c:48: alt_write_index = next_write_index;
ret
;source-doc/keyboard/kyb_driver.c:48:
;source-doc/keyboard/kyb_driver.c:50: }
; ---------------------------------
; Function keyboard_buf_put
; ---------------------------------
_keyboard_buf_put:
ld c, a
;source-doc/keyboard/kyb_driver.c:49: static void keyboard_buf_put(const uint8_t indx) __sdcccall(1) {
;source-doc/keyboard/kyb_driver.c:51:
ld b,0x00
ld hl,+(_report + 2)
add hl, bc
;source-doc/keyboard/kyb_driver.c:50: const uint8_t key_code = report.keyCode[indx];
;source-doc/keyboard/kyb_driver.c:52: static void keyboard_buf_put(const uint8_t indx) __sdcccall(1) {
ld a,(hl)
ld c,a
cp 0x80
jr NC,l_keyboard_buf_put_00111
or a
;source-doc/keyboard/kyb_driver.c:51: if (key_code >= 0x80 || key_code == 0)
;source-doc/keyboard/kyb_driver.c:53: const uint8_t key_code = report.keyCode[indx];
jr Z,l_keyboard_buf_put_00111
;source-doc/keyboard/kyb_driver.c:55: uint8_t i = 6;
;source-doc/keyboard/kyb_driver.c:56: uint8_t *a = previous.keyCode;
;source-doc/keyboard/kyb_driver.c:57: // if already reported, just skip it
;source-doc/keyboard/kyb_driver.c:58: uint8_t i = 6;
ld b,0x06
ld hl,+(_previous + 2)
l_keyboard_buf_put_00106:
;source-doc/keyboard/kyb_driver.c:57: do {
;source-doc/keyboard/kyb_driver.c:59: uint8_t *a = previous.keyCode;
ld a, (hl)
inc hl
sub c
;source-doc/keyboard/kyb_driver.c:58: if (*a++ == key_code)
;source-doc/keyboard/kyb_driver.c:60: do {
ret Z
;source-doc/keyboard/kyb_driver.c:59: return;
;source-doc/keyboard/kyb_driver.c:61: if (*a++ == key_code)
djnz l_keyboard_buf_put_00106
;source-doc/keyboard/kyb_driver.c:61:
;source-doc/keyboard/kyb_driver.c:63: } while (--i != 0);
ld a, (_write_index)
inc a
and 0x07
ld b, a
;source-doc/keyboard/kyb_driver.c:62: uint8_t next_write_index = (write_index + 1) & KEYBOARD_BUFFER_SIZE_MASK;
;source-doc/keyboard/kyb_driver.c:64:
ld a,(_read_index)
sub b
ret Z
;source-doc/keyboard/kyb_driver.c:63: if (next_write_index != read_index) { // Check if buffer is not full
;source-doc/keyboard/kyb_driver.c:65: uint8_t next_write_index = (write_index + 1) & KEYBOARD_BUFFER_SIZE_MASK;
ld de,_buffer+0
ld hl, (_write_index)
ld h,0x00
@ -186,30 +186,32 @@ l_keyboard_buf_put_00106:
inc de
ld a, l
ld (de), a
;source-doc/keyboard/kyb_driver.c:64: buffer[write_index] = (uint16_t)report.bModifierKeys << 8 | (uint16_t)key_code;
;source-doc/keyboard/kyb_driver.c:66: if (next_write_index != read_index) { // Check if buffer is not full
ld hl,_write_index
ld (hl), b
l_keyboard_buf_put_00111:
;source-doc/keyboard/kyb_driver.c:66: }
;source-doc/keyboard/kyb_driver.c:68: write_index = next_write_index;
ret
;source-doc/keyboard/kyb_driver.c:68:
;source-doc/keyboard/kyb_driver.c:70: }
; ---------------------------------
; Function usb_kyb_buf_size
; ---------------------------------
_usb_kyb_buf_size:
;source-doc/keyboard/kyb_driver.c:72:
;source-doc/keyboard/kyb_driver.c:71:
DI
;source-doc/keyboard/kyb_driver.c:76: uint8_t alt_size;
ld a,(_alt_write_index)
ld hl,_alt_read_index
sub (hl)
jr C,l_usb_kyb_buf_size_00102
;source-doc/keyboard/kyb_driver.c:73: if (alt_write_index >= alt_read_index)
;source-doc/keyboard/kyb_driver.c:77:
ld a,(_alt_write_index)
ld hl,_alt_read_index
sub (hl)
ld d, a
jr l_usb_kyb_buf_size_00103
l_usb_kyb_buf_size_00102:
;source-doc/keyboard/kyb_driver.c:75: else
;source-doc/keyboard/kyb_driver.c:79: alt_size = alt_write_index - alt_read_index;
ld hl, (_alt_read_index)
ld a,0x08
sub l
@ -217,29 +219,29 @@ l_usb_kyb_buf_size_00102:
add a, l
ld d, a
l_usb_kyb_buf_size_00103:
;source-doc/keyboard/kyb_driver.c:77:
;source-doc/keyboard/kyb_driver.c:81: alt_size = KEYBOARD_BUFFER_SIZE - alt_read_index + alt_write_index;
ld a, d
or a
jr Z,l_usb_kyb_buf_size_00105
;source-doc/keyboard/kyb_driver.c:78: if (alt_size != 0)
;source-doc/keyboard/kyb_driver.c:82:
ld a, (_alt_read_index)
inc a
and 0x07
ld (_alt_read_index),a
l_usb_kyb_buf_size_00105:
;source-doc/keyboard/kyb_driver.c:80:
;source-doc/keyboard/kyb_driver.c:84: alt_read_index = (alt_read_index + 1) & KEYBOARD_BUFFER_SIZE_MASK;
ld a,(_write_index)
ld hl,_read_index
sub (hl)
jr C,l_usb_kyb_buf_size_00107
;source-doc/keyboard/kyb_driver.c:81: if (write_index >= read_index)
;source-doc/keyboard/kyb_driver.c:85:
ld a,(_write_index)
ld hl,_read_index
sub (hl)
ld e, a
jr l_usb_kyb_buf_size_00108
l_usb_kyb_buf_size_00107:
;source-doc/keyboard/kyb_driver.c:83: else
;source-doc/keyboard/kyb_driver.c:87: size = write_index - read_index;
ld hl, (_read_index)
ld a,0x08
sub l
@ -247,13 +249,15 @@ l_usb_kyb_buf_size_00107:
add a, l
ld e, a
l_usb_kyb_buf_size_00108:
;source-doc/keyboard/kyb_driver.c:85:
;source-doc/keyboard/kyb_driver.c:89: size = KEYBOARD_BUFFER_SIZE - read_index + write_index;
EI
;source-doc/keyboard/kyb_driver.c:90:
xor a
xor a
ex de, hl
;source-doc/keyboard/kyb_driver.c:86: return (uint16_t)alt_size << 8 | (uint16_t)size;
;source-doc/keyboard/kyb_driver.c:91: EI;
ret
;source-doc/keyboard/kyb_driver.c:88:
;source-doc/keyboard/kyb_driver.c:93: }
; ---------------------------------
; Function usb_kyb_buf_get_next
; ---------------------------------
@ -263,18 +267,20 @@ _usb_kyb_buf_get_next:
add ix,sp
push af
push af
;source-doc/keyboard/kyb_driver.c:89: uint32_t usb_kyb_buf_get_next() {
;source-doc/keyboard/kyb_driver.c:94:
ld a,(_write_index)
ld hl,_read_index
sub (hl)
jr NZ,l_usb_kyb_buf_get_next_00102
;source-doc/keyboard/kyb_driver.c:90: if (write_index == read_index) // Check if buffer is empty
;source-doc/keyboard/kyb_driver.c:95: uint32_t usb_kyb_buf_get_next() {
ld hl,0xff00
ld e, l
ld d, l
jr l_usb_kyb_buf_get_next_00103
l_usb_kyb_buf_get_next_00102:
;source-doc/keyboard/kyb_driver.c:92:
;source-doc/keyboard/kyb_driver.c:97: return 0x0000FF00; // H = -1, D, E, L = 0
DI
;source-doc/keyboard/kyb_driver.c:98:
ld bc,_buffer+0
ld hl, (_read_index)
ld h,0x00
@ -283,20 +289,23 @@ l_usb_kyb_buf_get_next_00102:
ld c, (hl)
inc hl
ld b, (hl)
;source-doc/keyboard/kyb_driver.c:93: const uint8_t modifier_key = buffer[read_index] >> 8;
;source-doc/keyboard/kyb_driver.c:94: const uint8_t key_code = buffer[read_index] & 255;
;source-doc/keyboard/kyb_driver.c:99: DI;
;source-doc/keyboard/kyb_driver.c:100: const uint8_t modifier_key = buffer[read_index] >> 8;
ld a, (_read_index)
inc a
and 0x07
ld (_read_index),a
;source-doc/keyboard/kyb_driver.c:101:
ld hl,_read_index
ld (hl), a
;source-doc/keyboard/kyb_driver.c:101: const uint8_t key_code = buffer[read_index] & 255;
EI
;source-doc/keyboard/kyb_driver.c:107: // L: KeyCode aka scan code
push bc
ld l, c
ld a, b
call _scancode_to_char
ld e, a
pop bc
;source-doc/keyboard/kyb_driver.c:103: /* D = modifier, e-> char, H = 0, L=>code */
;source-doc/keyboard/kyb_driver.c:110: /* D = modifier, e-> char, H = 0, L=>code */
xor a
ld (ix-1),b
xor a
@ -313,50 +322,56 @@ l_usb_kyb_buf_get_next_00102:
pop hl
push hl
l_usb_kyb_buf_get_next_00103:
;source-doc/keyboard/kyb_driver.c:104: return (uint32_t)modifier_key << 24 | (uint32_t)c << 16 | key_code;
;source-doc/keyboard/kyb_driver.c:111:
ld sp, ix
pop ix
ret
;source-doc/keyboard/kyb_driver.c:106:
;source-doc/keyboard/kyb_driver.c:113: }
; ---------------------------------
; Function usb_kyb_flush
; ---------------------------------
_usb_kyb_flush:
;source-doc/keyboard/kyb_driver.c:107: void usb_kyb_flush() {
;source-doc/keyboard/kyb_driver.c:114:
DI
;source-doc/keyboard/kyb_driver.c:115: uint8_t usb_kyb_flush() __sdcccall(1) {
xor a
ld (_alt_read_index),a
ld (_alt_write_index),a
xor a
ld (_read_index),a
ld (_write_index),a
;source-doc/keyboard/kyb_driver.c:110: uint8_t i = sizeof(previous);
;source-doc/keyboard/kyb_driver.c:118:
ld de,_previous+0
;source-doc/keyboard/kyb_driver.c:111: uint8_t *a = (uint8_t *)previous;
;source-doc/keyboard/kyb_driver.c:112: uint8_t *b = (uint8_t *)report;
;source-doc/keyboard/kyb_driver.c:119: uint8_t i = sizeof(previous);
;source-doc/keyboard/kyb_driver.c:120: uint8_t *a = (uint8_t *)previous;
ld b,0x08
ld hl,_report
l_usb_kyb_flush_00101:
;source-doc/keyboard/kyb_driver.c:113: do {
;source-doc/keyboard/kyb_driver.c:121: uint8_t *b = (uint8_t *)report;
xor a
ld (de), a
inc de
;source-doc/keyboard/kyb_driver.c:114: *a++ = 0;
;source-doc/keyboard/kyb_driver.c:122: do {
ld (hl),0x00
inc hl
;source-doc/keyboard/kyb_driver.c:115: *b++ = 0;
;source-doc/keyboard/kyb_driver.c:123: *a++ = 0;
djnz l_usb_kyb_flush_00101
;source-doc/keyboard/kyb_driver.c:116: } while (--i != 0);
;source-doc/keyboard/kyb_driver.c:125: } while (--i != 0);
EI
;source-doc/keyboard/kyb_driver.c:127: EI;
xor a
;source-doc/keyboard/kyb_driver.c:128:
ret
;source-doc/keyboard/kyb_driver.c:118:
;source-doc/keyboard/kyb_driver.c:130: }
; ---------------------------------
; Function usb_kyb_tick
; ---------------------------------
_usb_kyb_tick:
;source-doc/keyboard/kyb_driver.c:119: void usb_kyb_tick(void) {
;source-doc/keyboard/kyb_driver.c:131:
ld hl,_in_critical_usb_section
ld a, (hl)
or a
;source-doc/keyboard/kyb_driver.c:120: if (is_in_critical_section())
;source-doc/keyboard/kyb_driver.c:132: void usb_kyb_tick(void) {
jr NZ,l_usb_kyb_tick_00112
;././source-doc/base-drv//ch376.h:111:
ld l,0x0b
@ -369,7 +384,7 @@ _usb_kyb_tick:
ld a,0x1f
ld bc,_CH376_DATA_PORT
out (c), a
;source-doc/keyboard/kyb_driver.c:123: ch_configure_nak_retry_disable();
;source-doc/keyboard/kyb_driver.c:135:
ld bc,_report+0
ld hl, (_keyboard_config)
ld a,0x08
@ -394,37 +409,37 @@ _usb_kyb_tick:
ld a,0xdf
ld bc,_CH376_DATA_PORT
out (c), a
;source-doc/keyboard/kyb_driver.c:125: ch_configure_nak_retry_3s();
;source-doc/keyboard/kyb_driver.c:137: result = usbdev_dat_in_trnsfer_0((device_config *)keyboard_config, (uint8_t *)&report, 8);
ld hl,_result
ld a, (hl)
or a
jr NZ,l_usb_kyb_tick_00112
;source-doc/keyboard/kyb_driver.c:126: if (result == 0) {
;source-doc/keyboard/kyb_driver.c:138: ch_configure_nak_retry_3s();
call _report_diff
or a
jr Z,l_usb_kyb_tick_00112
;source-doc/keyboard/kyb_driver.c:127: if (report_diff()) {
;source-doc/keyboard/kyb_driver.c:139: if (result == 0) {
call _report_put
;source-doc/keyboard/kyb_driver.c:129: uint8_t i = 6;
;source-doc/keyboard/kyb_driver.c:141: report_put();
ld b,0x06
l_usb_kyb_tick_00103:
;source-doc/keyboard/kyb_driver.c:130: do {
;source-doc/keyboard/kyb_driver.c:142: uint8_t i = 6;
ld a, b
dec a
push bc
call _keyboard_buf_put
pop bc
;source-doc/keyboard/kyb_driver.c:131: keyboard_buf_put(i - 1);
;source-doc/keyboard/kyb_driver.c:143: do {
djnz l_usb_kyb_tick_00103
;source-doc/keyboard/kyb_driver.c:132: } while (--i != 0);
;source-doc/keyboard/kyb_driver.c:144: keyboard_buf_put(i - 1);
ld de,_previous
ld bc,0x0008
ld hl,_report
ldir
l_usb_kyb_tick_00112:
;source-doc/keyboard/kyb_driver.c:135: }
;source-doc/keyboard/kyb_driver.c:147: }
ret
;source-doc/keyboard/kyb_driver.c:137:
;source-doc/keyboard/kyb_driver.c:149: }
; ---------------------------------
; Function usb_kyb_init
; ---------------------------------
@ -432,22 +447,22 @@ _usb_kyb_init:
push ix
ld ix,0
add ix,sp
;source-doc/keyboard/kyb_driver.c:139: uint8_t result;
;source-doc/keyboard/kyb_driver.c:151: usb_error usb_kyb_init(const uint8_t dev_index) {
ld a,(ix+4)
call _get_usb_device_config
ex de, hl
ld (_keyboard_config), hl
;source-doc/keyboard/kyb_driver.c:141:
;source-doc/keyboard/kyb_driver.c:153: keyboard_config = (device_config_keyboard *)get_usb_device_config(dev_index);
ld hl,_keyboard_config + 1
ld a, (hl)
dec hl
or (hl)
jr NZ,l_usb_kyb_init_00102
;source-doc/keyboard/kyb_driver.c:142: if (keyboard_config == NULL)
;source-doc/keyboard/kyb_driver.c:154:
ld l,0x0f
jr l_usb_kyb_init_00106
l_usb_kyb_init_00102:
;source-doc/keyboard/kyb_driver.c:144:
;source-doc/keyboard/kyb_driver.c:156: return USB_ERR_OTHER;
ld a,0x01
push af
inc sp
@ -456,18 +471,18 @@ l_usb_kyb_init_00102:
ld l, a
or a
jr NZ,l_usb_kyb_init_00105
;source-doc/keyboard/kyb_driver.c:145: CHECK(hid_set_protocol(keyboard_config, 1));
;source-doc/keyboard/kyb_driver.c:157:
ld a,0x80
push af
inc sp
ld hl, (_keyboard_config)
call _hid_set_idle
ld l, a
;source-doc/keyboard/kyb_driver.c:147:
;source-doc/keyboard/kyb_driver.c:148: done:
;source-doc/keyboard/kyb_driver.c:159: return hid_set_idle(keyboard_config, 0x80);
;source-doc/keyboard/kyb_driver.c:160:
l_usb_kyb_init_00105:
l_usb_kyb_init_00106:
;source-doc/keyboard/kyb_driver.c:149: return result;
;source-doc/keyboard/kyb_driver.c:161: done:
pop ix
ret
_keyboard_config:

74
Source/HBIOS/ch376-native/source-doc/keyboard/kyb_driver.asm
View File

@ -0,0 +1,74 @@
;
; Inputs:
; None
;
; Outputs:
; A: Status / Codes Pending
; B: Number of buffered usb reports
; A': USB Report Modifier Key State (valid if B > 0)
; B', C', D', E', H', L': USB Report's 6 key codes (valid only if B > 0)
;
; Return a count of the number of key Codes Pending (A) in the keyboard buffer.
; If it is not possible to determine the actual number in the buffer, it is
; acceptable to return 1 to indicate there are key codes available to read and
; 0 if there are none available.
; The value returned in register A is used as both a Status (A) code and the
; return value. Negative values (bit 7 set) indicate a standard HBIOS result
; (error) code. Otherwise, the return value represents the number of key codes
; pending.
;
; USB Keyboard Extension:
; Returns the current USB HID keyboard report data.
; Register B contains the number of buffered reports available:
; B = 0: No reports available
; B > 0: At least one report available (will be consumed after reading)
; When a report is available (B > 0):
; A': Contains modifier key states
; B',C',D',E',H',L': Contains up to 6 concurrent key codes
; See USB HID Usage Tables specification for key codes
_usb_kyb_report:
exx
ld hl, (_alt_read_index)
ld h,0x00
add hl, hl
add hl, hl
add hl, hl
ld bc,_reports
add hl, bc
push hl ; address of potential que'd next usb report
call _usb_kyb_buf_size
ld a, l
ld b, h
ex af, af'
ld a, b
or a
pop iy ; retrieve the next que'd usb_report address
jr z, no_queued_reports
ld a, (iy)
ex af, af'
exx
ld b, (iy+2)
ld c, (iy+3)
ld d, (iy+4)
ld e, (iy+5)
ld h, (iy+6)
ld l, (iy+7)
exx
ret
no_queued_reports:
ex af, af'
exx
ld bc, 0
ld d, b
ld e, b
ld l, b
ld h, b
exx
ret

17
Source/HBIOS/ch376-native/source-doc/keyboard/kyb_driver.c
View File

@ -24,6 +24,9 @@ static keyboard_report_t *queued_report = NULL;
static keyboard_report_t report = {0};
static keyboard_report_t previous = {0};
#define DI __asm__("DI")
#define EI __asm__("EI")
static uint8_t report_diff() __sdcccall(1) {
uint8_t *a = (uint8_t *)&report;
uint8_t *b = (uint8_t *)&previous;
@ -67,6 +70,8 @@ static void keyboard_buf_put(const uint8_t indx) __sdcccall(1) {
}
uint16_t usb_kyb_buf_size() {
DI;
uint8_t size;
uint8_t alt_size;
@ -83,6 +88,7 @@ uint16_t usb_kyb_buf_size() {
else
size = KEYBOARD_BUFFER_SIZE - read_index + write_index;
EI;
return (uint16_t)alt_size << 8 | (uint16_t)size;
}
@ -90,10 +96,11 @@ uint32_t usb_kyb_buf_get_next() {
if (write_index == read_index) // Check if buffer is empty
return 0x0000FF00; // H = -1, D, E, L = 0
DI;
const uint8_t modifier_key = buffer[read_index] >> 8;
const uint8_t key_code = buffer[read_index] & 255;
read_index = (read_index + 1) & KEYBOARD_BUFFER_SIZE_MASK;
EI;
// D: Modifier keys - aka Keystate
// E: ASCII Code
// H: 0
@ -101,10 +108,12 @@ uint32_t usb_kyb_buf_get_next() {
const unsigned char c = scancode_to_char(modifier_key, key_code);
/* D = modifier, e-> char, H = 0, L=>code */
return (uint32_t)modifier_key << 24 | (uint32_t)c << 16 | key_code;
}
void usb_kyb_flush() {
uint8_t usb_kyb_flush() __sdcccall(1) {
DI;
write_index = read_index = alt_write_index = alt_read_index = 0;
uint8_t i = sizeof(previous);
@ -114,6 +123,10 @@ void usb_kyb_flush() {
*a++ = 0;
*b++ = 0;
} while (--i != 0);
EI;
return 0;
}
void usb_kyb_tick(void) {

4
Source/HBIOS/ch376-native/source-doc/keyboard/kyb_driver.h
View File

@ -5,8 +5,8 @@
#include <stdint.h>
extern usb_error usb_kyb_init(const uint8_t dev_index);
extern void usb_kyb_flush();
extern uint8_t usb_kyb_flush() __sdcccall(1);
extern uint32_t usb_kyb_buf_get_next();
extern uint16_t usb_kyb_buf_size();
// extern <registers> usb_kyb_report();
#endif

56
Source/HBIOS/ch376kyb.asm
View File

@ -76,7 +76,6 @@ UKY_INT_SP .EQU $ - 2
VEC_CHUKB_TICK:
JP HB_TICK
; ### Function 0x4C -- Keyboard Status (VDAKST)
;
; Inputs:
@ -107,50 +106,7 @@ VEC_CHUKB_TICK:
; B',C',D',E',H',L': Contains up to 6 concurrent key codes
; See USB HID Usage Tables specification for key codes
UKY_STAT:
exx
ld hl, (_alt_read_index)
ld h,0x00
add hl, hl
add hl, hl
add hl, hl
ld bc,_reports
add hl, bc
push hl ; address of potential que'd next usb report
HB_DI
call _usb_kyb_buf_size
HB_EI
ld a, l
ld b, h
ex af, af'
ld a, b
or a
pop iy ; retrieve the next que'd usb_report address
jr z, no_queued_reports
ld a, (iy)
ex af, af'
exx
ld b, (iy+2)
ld c, (iy+3)
ld d, (iy+4)
ld e, (iy+5)
ld h, (iy+6)
ld l, (iy+7)
exx
ret
no_queued_reports:
ex af, af'
exx
ld bc, 0
ld d, b
ld e, b
ld l, b
ld h, b
exx
ret
UKY_STAT .EQU _usb_kyb_report
; ### Function 0x4D -- Video Keyboard Flush (VDAKFL)
;
@ -162,12 +118,8 @@ no_queued_reports:
;
; Purged and all contents discarded. The Status (A) is a standard HBIOS result code.
;
UKY_FLUSH:
HB_DI
CALL _usb_kyb_flush
HB_EI
XOR A
RET
UKY_FLUSH .EQU _usb_kyb_flush
;
; ### Function 0x4E -- Video Keyboard Read (VDAKRD)
;
@ -204,9 +156,7 @@ UKY_FLUSH:
; function keys and arrows, are returned as reserved codes.
;
UKY_READ:
HB_DI
CALL _usb_kyb_buf_get_next
HB_EI
LD A, H
OR A
JR NZ, UKY_READ

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