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stm32/usb: Expose USB HID device instance via usbd_hid_get().

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This is needed to implement a HID device in user C modules.
This commit is contained in:
Koen De Vleeschauwer 2020-10-15 12:51:52 +02:00 committed by Damien George
parent 3ce21945b1
commit 432b65f178
2 changed files with 20 additions and 0 deletions
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18
ports/stm32/usb.c
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@ -367,6 +367,24 @@ usbd_cdc_itf_t *usb_vcp_get(int idx) {
return &usb_device.usbd_cdc_itf[idx];
}
#if MICROPY_HW_USB_HID
// return hid interface if hid is configured, NULL otherwise
usbd_hid_itf_t *usbd_hid_get(void) {
#if defined(USE_HOST_MODE)
return NULL;
#else
uint8_t usb_mode = USBD_GetMode(&usb_device.usbd_cdc_msc_hid_state) & USBD_MODE_IFACE_MASK;
if (usb_mode == USBD_MODE_HID || usb_mode == USBD_MODE_CDC_HID || usb_mode == USBD_MODE_MSC_HID) {
return &usb_device.usbd_hid_itf;
} else {
return NULL;
}
#endif
}
#endif
/******************************************************************************/
// MicroPython bindings for USB

2
ports/stm32/usbd_hid_interface.h
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@ -16,6 +16,8 @@ typedef struct _usbd_hid_itf_t {
uint8_t report_in_buf[HID_DATA_FS_MAX_PACKET_SIZE];
} usbd_hid_itf_t;
usbd_hid_itf_t *usbd_hid_get(void);
static inline int usbd_hid_rx_num(usbd_hid_itf_t *hid) {
return hid->report_in_len != USBD_HID_REPORT_INVALID;
}