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tud_hid_report_complete_cb() API

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update hid composite to make use of tud_hid_report_complete_cb() for
sending reports when possible.
This commit is contained in:
hathach
2021-02-09 15:57:29 +07:00
parent ecd16cf24b
commit d2b8e591f6
6 changed files with 136 additions and 95 deletions
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195
examples/device/hid_composite/src/main.c
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@@ -104,6 +104,98 @@ void tud_resume_cb(void)
// USB HID
//--------------------------------------------------------------------+
static void send_hid_report(uint8_t report_id, uint32_t btn)
{
// skip if hid is not ready yet
if ( !tud_hid_ready() ) return;
switch(report_id)
{
case REPORT_ID_KEYBOARD:
{
// use to avoid send multiple consecutive zero report for keyboard
static bool has_keyboard_key = false;
if ( btn )
{
uint8_t keycode[6] = { 0 };
keycode[0] = HID_KEY_A;
tud_hid_keyboard_report(REPORT_ID_KEYBOARD, 0, keycode);
has_keyboard_key = true;
}else
{
// send empty key report if previously has key pressed
if (has_keyboard_key) tud_hid_keyboard_report(REPORT_ID_KEYBOARD, 0, NULL);
has_keyboard_key = false;
}
}
break;
case REPORT_ID_MOUSE:
{
int8_t const delta = 5;
// no button, right + down, no scroll, no pan
tud_hid_mouse_report(REPORT_ID_MOUSE, 0x00, delta, delta, 0, 0);
}
break;
case REPORT_ID_CONSUMER_CONTROL:
{
// use to avoid send multiple consecutive zero report
static bool has_consumer_key = false;
if ( btn )
{
// volume down
uint16_t volume_down = HID_USAGE_CONSUMER_VOLUME_DECREMENT;
tud_hid_report(REPORT_ID_CONSUMER_CONTROL, &volume_down, 2);
has_consumer_key = true;
}else
{
// send empty key report (release key) if previously has key pressed
uint16_t empty_key = 0;
if (has_consumer_key) tud_hid_report(REPORT_ID_CONSUMER_CONTROL, &empty_key, 2);
has_consumer_key = false;
}
}
break;
case REPORT_ID_GAMEPAD:
{
// use to avoid send multiple consecutive zero report for keyboard
static bool has_gamepad_key = false;
hid_gamepad_report_t report =
{
.x = 0, .y = 0, .z = 0, .rz = 0, .rx = 0, .ry = 0,
.hat = 0, .buttons = 0
};
if ( btn )
{
report.hat = GAMEPAD_HAT_UP;
report.buttons = GAMEPAD_BUTTON_A;
tud_hid_report(REPORT_ID_GAMEPAD, &report, sizeof(report));
has_gamepad_key = true;
}else
{
report.hat = GAMEPAD_HAT_CENTERED;
report.buttons = 0;
if (has_gamepad_key) tud_hid_report(REPORT_ID_GAMEPAD, &report, sizeof(report));
has_gamepad_key = false;
}
}
break;
default: break;
}
}
// Every 10ms, we will sent 1 report for each HID profile (keyboard, mouse etc ..)
// tud_hid_report_complete_cb() is used to send the next report after previous one is complete
void hid_task(void)
{
// Poll every 10ms
@@ -121,97 +213,26 @@ void hid_task(void)
// Wake up host if we are in suspend mode
// and REMOTE_WAKEUP feature is enabled by host
tud_remote_wakeup();
}
/*------------- Mouse -------------*/
if ( tud_hid_ready() )
}else
{
if ( btn )
{
int8_t const delta = 5;
// no button, right + down, no scroll pan
tud_hid_mouse_report(REPORT_ID_MOUSE, 0x00, delta, delta, 0, 0);
// delay a bit before sending keyboard report
board_delay(10);
}
// Send the 1st of report chain, the rest will be sent by tud_hid_report_complete_cb()
send_hid_report(REPORT_ID_KEYBOARD, btn);
}
}
/*------------- Keyboard -------------*/
if ( tud_hid_ready() )
// Invoked when sent REPORT successfully to host
// Application can use this to send the next report
// Note: For composite reports, report[0] is report ID
void tud_hid_report_complete_cb(uint8_t itf, uint8_t const* report, uint8_t len)
{
(void) itf;
(void) len;
uint8_t next_report_id = report[0] + 1;
if (next_report_id < REPORT_ID_COUNT)
{
// use to avoid send multiple consecutive zero report for keyboard
static bool has_key = false;
if ( btn )
{
uint8_t keycode[6] = { 0 };
keycode[0] = HID_KEY_A;
tud_hid_keyboard_report(REPORT_ID_KEYBOARD, 0, keycode);
has_key = true;
}else
{
// send empty key report if previously has key pressed
if (has_key) tud_hid_keyboard_report(REPORT_ID_KEYBOARD, 0, NULL);
has_key = false;
}
// delay a bit before sending consumer report
board_delay(10);
}
/*------------- Consume Control -------------*/
if ( tud_hid_ready() )
{
// use to avoid send multiple consecutive zero report
static bool has_consumer_key = false;
if ( btn )
{
// volume down
uint16_t volume_down = HID_USAGE_CONSUMER_VOLUME_DECREMENT;
tud_hid_report(REPORT_ID_CONSUMER_CONTROL, &volume_down, 2);
has_consumer_key = true;
}else
{
// send empty key report (release key) if previously has key pressed
uint16_t empty_key = 0;
if (has_consumer_key) tud_hid_report(REPORT_ID_CONSUMER_CONTROL, &empty_key, 2);
has_consumer_key = false;
}
// delay a bit before sending next report
board_delay(10);
}
/*------------- Gamepad -------------*/
if ( tud_hid_ready() )
{
// use to avoid send multiple consecutive zero report for keyboard
static bool has_gamepad_key = false;
hid_gamepad_report_t report =
{
.x = 0, .y = 0, .z = 0, .rz = 0, .rx = 0, .ry = 0,
.hat = 0, .buttons = 0
};
if ( btn )
{
report.hat = GAMEPAD_HAT_UP;
tud_hid_report(REPORT_ID_GAMEPAD, &report, sizeof(report));
has_gamepad_key = true;
}else
{
report.hat = GAMEPAD_HAT_CENTERED;
if (has_gamepad_key) tud_hid_report(REPORT_ID_GAMEPAD, &report, sizeof(report));
has_gamepad_key = false;
}
send_hid_report(next_report_id, board_button_read());
}
}