sn32: Fixed USB sending errors under certain conditions

ChibiOS · Jun 14, 2023 · 3e20119 · 3e20119
1 parent a224be1
commit 3e20119
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.c b/os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.c
@@ -331,6 +331,12 @@ void usb_serve_endpoints(USBDriver* usbp, usbep_t ep, bool in) {
         /* IN endpoint, transmission.*/
         USBInEndpointState *isp = epcp->in_state;
 
+        if (isp->txcnt >= isp->txsize) {
+          /* Transfer completed, invokes the callback.*/
+          _usb_isr_invoke_in_cb(usbp, ep);
+          return;
+        }
+
         isp->txcnt += isp->txlast;
         n = isp->txsize - isp->txcnt;