Okay, that worked for me, maybe there's a better way to do it, but I have other things going on:
usb_host.c:
uint32_t keyboardMain_debounce = 0;
HID_KEYBD_Info_TypeDef *keybd_info1;
uint8_t kbd_LED_status[1] = { 0B001 }; // kbd_num_lock_state = 1
uint8_t kbd_LED_status_old = 0;
uint8_t kbd_num_lock_state = 1;
uint8_t caps_lock_state = 0;
uint8_t kbd_scroll_lock_state = 0;
void USBH_HID_EventCallback(USBH_HandleTypeDef *phost) {
HID_HandleTypeDef *HID_Handle =
(HID_HandleTypeDef*) phost->pActiveClass->pData;
if (HID_Handle->Init == USBH_HID_KeybdInit) {
keybd_info1 = USBH_HID_GetKeybdInfo(phost);
USBH_DbgLog("0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x",
keybd_info1->keys[0], keybd_info1->keys[1],
keybd_info1->keys[2], keybd_info1->keys[3],
keybd_info1->keys[4], keybd_info1->keys[5]); // USBH_DbgLog
if (HAL_GetTick() > (keyboardMain_debounce + 100)) {
keyboardMain_debounce = HAL_GetTick();
uint8_t key = keybd_info1->keys[0];
if (key == KEY_INSERT) {
keyboard_insert = !keyboard_insert;
} else if (key == KEY_KEYPAD_NUM_LOCK_AND_CLEAR) {
if ((kbd_LED_status[0] & 1) == 0) {
kbd_LED_status[0] |= 0B001;
} else {
kbd_LED_status[0] &= 0B110;
}
} else if (key == KEY_CAPS_LOCK) {
if (((kbd_LED_status[0] >> 1) & 1) == 0) {
kbd_LED_status[0] |= 0B010;
} else {
kbd_LED_status[0] &= 0B101;
}
} else if (key == KEY_SCROLL_LOCK) {
if (((kbd_LED_status[0] >> 2) & 1) == 0) {
kbd_LED_status[0] |= 0B100;
} else {
kbd_LED_status[0] &= 0B011;
}
}
}
} else if (HID_Handle->Init == USBH_HID_MouseInit) {
USBH_HID_GetMouseInfo(phost);
USBH_DbgLog(
"Mouse action: x= 0x%x, y= 0x%x, button1 = 0x%x, button2 = 0x%x, button3 = 0x%x \n",
mouse_info.x, mouse_info.y, mouse_info.buttons[0],
mouse_info.buttons[1], mouse_info.buttons[2]);
}
}
usb_host.c:
/* USER CODE BEGIN 1 */
USBH_StatusTypeDef USB_Set_Keyboard_LED_Status(uint8_t *LED_status) {
if (kbd_LED_status_old == kbd_LED_status[0]) {
return HAL_OK;
}
kbd_LED_status_old = LED_status[0];
uint8_t kbd_led[2] = { 0x00, 0x00 };
USBH_StatusTypeDef ret = HAL_BUSY;
USBH_StatusTypeDef ret2 = HAL_OK;
kbd_led[0] = LED_status[0] & 7;
for (uint8_t timeout = 0; timeout < 15; timeout++) {
ret = USBH_HID_SetReport(&hUsbHostFS, 0x02U, 0U, kbd_led,
sizeof(kbd_led));
UsrLog("USBH_HID_SetReport return: %d", ret);
IWDG_delay_ms(1);
if (ret == ret2) {
break;
}
}
// ret = HAL_BUSY;
// ret2 = HAL_OK;
for (uint8_t timeout = 0; timeout < 15; timeout++) {
ret = USBH_HID_GetReport(&hUsbHostFS, 0x02U, 0U, kbd_led,
sizeof(kbd_led));
UsrLog("USBH_HID_GetReport return: %d; kbd_led: %d", ret, kbd_led[0]);
IWDG_delay_ms(1);
if (ret == ret2) {
break;
}
}
if (kbd_led[0] == (LED_status[0] & 7)) {
ret = HAL_OK;
} else {
ret = HAL_ERROR;
}
LED_status[0] = kbd_led[0];
if ((kbd_LED_status[0] & 1) == 1) {
kbd_num_lock_state = 1;
} else {
kbd_num_lock_state = 0;
}
if (((kbd_LED_status[0] >> 1) & 1) == 1) {
caps_lock_state = 1;
} else {
caps_lock_state = 0;
}
if (((kbd_LED_status[0] >> 2) & 1) == 1) {
kbd_scroll_lock_state = 1;
} else {
kbd_scroll_lock_state = 0;
}
return ret;
}
usb_host.c:
static void USBH_UserProcess2(USBH_HandleTypeDef *phost, uint8_t id) {
/* USER CODE BEGIN CALL_BACK_21 */
switch (id) {
case HOST_USER_SELECT_CONFIGURATION:
break;
case HOST_USER_DISCONNECTION:
Appli_state = APPLICATION_DISCONNECT;
Appli_state_FS = Appli_state;
kbd_LED_status_old = 99; // <--------- to update keyboard if reconnected
usbh_core.c:
uint32_t keyboard_led_status_tick = 0;
/**
* @brief USBH_Process
* Background process of the USB Core.
* @param phost: Host Handle
* @retval USBH Status
*/
USBH_StatusTypeDef USBH_Process(USBH_HandleTypeDef *phost) {
[...]
case HOST_CLASS:
/* process class state machine */
if (phost->pActiveClass != NULL) {
/* Update keyboard LED status */
if (HAL_GetTick() > (keyboard_led_status_tick + 10)) {
keyboard_led_status_tick = HAL_GetTick();
HID_HandleTypeDef *HID_Handle =
(HID_HandleTypeDef*) phost->pActiveClass->pData;
if (HID_Handle->Init == USBH_HID_KeybdInit) {
USB_Set_Keyboard_LED_Status();
}
}
phost->pActiveClass->BgndProcess(phost);
}
break;
case HOST_DEV_DISCONNECTED:
[...]
