Merge branch 'master' into port-samg55

src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c

@@ -30,7 +30,7 @@
 
 /**********************************************
  * This driver has been tested with the following MCUs:
- *  - F070, F072, L053
+ *  - F070, F072, L053, F042F6
  *
  * It also should work with minimal changes for any ST MCU with an "USB A"/"PCD"/"HCD" peripheral. This
  *  covers:
@@ -44,6 +44,9 @@
  * L4x2, L4x3                     1024 byte buffer
  *
  * To use this driver, you must:
+ * - If you are using a device with crystal-less USB, set up the clock recovery system (CRS)
+ * - Remap pins to be D+/D- on devices that they are shared (for example: F042Fx)
+ *   - This is different to the normal "alternate function" GPIO interface, needs to go through SYSCFG->CFGRx register
  * - Enable USB clock; Perhaps use __HAL_RCC_USB_CLK_ENABLE();
  * - (Optionally configure GPIO HAL to tell it the USB driver is using the USB pins)
  * - call tusb_init();

src/portable/st/synopsys/dcd_synopsys.c

@@ -207,12 +207,8 @@ void dcd_init (uint8_t rhport)
     USB_OTG_GINTMSK_SOFM | USB_OTG_GINTMSK_RXFLVLM /* SB_OTG_GINTMSK_ESUSPM | \
     USB_OTG_GINTMSK_USBSUSPM */;
 
-  // Enable VBUS hardware sensing, enable pullup, enable peripheral.
-#ifdef USB_OTG_GCCFG_VBDEN
-  USB_OTG_FS->GCCFG |= USB_OTG_GCCFG_VBDEN | USB_OTG_GCCFG_PWRDWN;
-#else
-  USB_OTG_FS->GCCFG |= USB_OTG_GCCFG_VBUSBSEN | USB_OTG_GCCFG_PWRDWN;
-#endif
+  // Enable USB transceiver.
+  USB_OTG_FS->GCCFG |= USB_OTG_GCCFG_PWRDWN;
 
   // Soft Connect -> Enable pullup on D+/D-.
   // This step does not appear to be specified in the programmer's model.

src/portable/valentyusb/eptri/dcd_eptri.c

@@ -226,7 +226,7 @@ static void process_rx(void) {
     test_buffer[total_read] = c;
 #endif
     total_read++;
-    if ((rx_buffer_offset[rx_ep] + current_offset) < rx_buffer_max[rx_ep]) {
+    if (current_offset < rx_buffer_max[rx_ep]) {
 #if LOG_USB
       usb_log[usb_log_offset].data[usb_log[usb_log_offset].size++] = c;
 #endif