add pio_usb_host_endpoint_close() API

Author: hathach

src/pio_usb_host.c

@@ -443,6 +443,17 @@ bool pio_usb_host_endpoint_open(uint8_t root_idx, uint8_t device_address,
   return false;
 }
 
+bool pio_usb_host_endpoint_close(uint8_t root_idx, uint8_t device_address,
+                                 uint8_t ep_address) {
+  endpoint_t *ep = _find_ep(root_idx, device_address, ep_address);
+  if (!ep) {
+    return false; // endpoint not opened
+  }
+
+  ep->size = 0; // mark as closed
+  return true;
+}
+
 bool pio_usb_host_send_setup(uint8_t root_idx, uint8_t device_address,
                              uint8_t const setup_packet[8]) {
   endpoint_t *ep = _find_ep(root_idx, device_address, 0);

src/pio_usb_ll.h

@@ -183,6 +183,8 @@ void pio_usb_host_close_device(uint8_t root_idx, uint8_t device_address);
 
 bool pio_usb_host_endpoint_open(uint8_t root_idx, uint8_t device_address,
                                 uint8_t const *desc_endpoint, bool need_pre);
+bool pio_usb_host_endpoint_close(uint8_t root_idx, uint8_t device_address,
+                                 uint8_t ep_address);
 bool pio_usb_host_send_setup(uint8_t root_idx, uint8_t device_address,
                              uint8_t const setup_packet[8]);
 bool pio_usb_host_endpoint_transfer(uint8_t root_idx, uint8_t device_address,