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Control keyboard leds #64

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Control keyboard leds #64

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17 changes: 15 additions & 2 deletions examples/host_hid_to_device_cdc/host_hid_to_device_cdc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -182,10 +182,11 @@ static inline bool find_key_in_report(hid_keyboard_report_t const *report, uint8


// convert hid keycode to ascii and print via usb device CDC (ignore non-printable)
static void process_kbd_report(uint8_t dev_addr, hid_keyboard_report_t const *report)
static void process_kbd_report(uint8_t dev_addr, uint8_t instance, hid_keyboard_report_t const *report)
{
(void) dev_addr;
static hid_keyboard_report_t prev_report = { 0, 0, {0} }; // previous report to check key released
static uint8_t leds = 0;
bool flush = false;

for(uint8_t i=0; i<6; i++)
Expand Down Expand Up @@ -214,6 +215,18 @@ static void process_kbd_report(uint8_t dev_addr, hid_keyboard_report_t const *re
if (ch == '\n') tud_cdc_write("\r", 1);
tud_cdc_write(&ch, 1);
flush = true;
} else if (keycode == HID_KEY_CAPS_LOCK) {
leds ^= KEYBOARD_LED_CAPSLOCK; // = 2
tuh_hid_set_report(dev_addr, instance, 0, HID_REPORT_TYPE_OUTPUT,
&leds, sizeof(leds));
} else if (keycode == HID_KEY_NUM_LOCK) {
leds ^= KEYBOARD_LED_NUMLOCK;
tuh_hid_set_report(dev_addr, instance, 0, HID_REPORT_TYPE_OUTPUT,
&leds, sizeof(leds));
} else if (keycode == HID_KEY_SCROLL_LOCK) {
leds ^= KEYBOARD_LED_SCROLLLOCK;
tuh_hid_set_report(dev_addr, instance, 0, HID_REPORT_TYPE_OUTPUT,
&leds, sizeof(leds));
}
}
}
Expand Down Expand Up @@ -250,7 +263,7 @@ void tuh_hid_report_received_cb(uint8_t dev_addr, uint8_t instance, uint8_t cons
switch(itf_protocol)
{
case HID_ITF_PROTOCOL_KEYBOARD:
process_kbd_report(dev_addr, (hid_keyboard_report_t const*) report );
process_kbd_report(dev_addr, instance, (hid_keyboard_report_t const*) report );
break;

case HID_ITF_PROTOCOL_MOUSE:
Expand Down