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-rw-r--r--os/hal/platforms/STM32/usb_lld.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/os/hal/platforms/STM32/usb_lld.c b/os/hal/platforms/STM32/usb_lld.c
index 5125f1cee..0a7bc9315 100644
--- a/os/hal/platforms/STM32/usb_lld.c
+++ b/os/hal/platforms/STM32/usb_lld.c
@@ -319,7 +319,8 @@ void usb_lld_start(USBDriver *usbp) {
CORTEX_PRIORITY_MASK(STM32_USB_USB1_HP_IRQ_PRIORITY));
NVICEnableVector(USB_LP_CAN1_RX0_IRQn,
CORTEX_PRIORITY_MASK(STM32_USB_USB1_LP_IRQ_PRIORITY));
-
+ /* Releases the USB reset.*/
+ STM32_USB->CNTR = 0;
}
#endif
/* Reset procedure enforced on driver start.*/
@@ -360,11 +361,8 @@ void usb_lld_stop(USBDriver *usbp) {
void usb_lld_reset(USBDriver *usbp) {
uint32_t cntr;
- /* Powers up the transceiver while holding the USB in reset state.*/
- STM32_USB->CNTR = CNTR_FRES;
-
- /* Releases the USB reset, BTABLE is reset to zero.*/
- STM32_USB->CNTR = 0;
+ /* Post reset initialization.*/
+ STM32_USB->BTABLE = 0;
STM32_USB->ISTR = 0;
STM32_USB->DADDR = DADDR_EF;
cntr = /*CNTR_ESOFM | */ CNTR_RESETM | /*CNTR_SUSPM |*/