diff options
| -rw-r--r-- | os/hal/ports/STM32/LLD/OTGv1/usb_lld.c | 4 | ||||
| -rw-r--r-- | os/hal/ports/STM32/STM32F4xx/stm32_rcc.h | 18 |
2 files changed, 22 insertions, 0 deletions
diff --git a/os/hal/ports/STM32/LLD/OTGv1/usb_lld.c b/os/hal/ports/STM32/LLD/OTGv1/usb_lld.c index 04bfefec2..9592656ff 100644 --- a/os/hal/ports/STM32/LLD/OTGv1/usb_lld.c +++ b/os/hal/ports/STM32/LLD/OTGv1/usb_lld.c @@ -754,6 +754,10 @@ void usb_lld_start(USBDriver *usbp) { rccEnableOTG_HS(FALSE);
rccResetOTG_HS();
+ /* Workaround for the problem described here:
+ http://forum.chibios.org/phpbb/viewtopic.php?f=16&t=1798 */
+ rccDisableOTG_HSULPI(TRUE);
+
/* Enables IRQ vector.*/
nvicEnableVector(STM32_OTG2_NUMBER, STM32_USB_OTG2_IRQ_PRIORITY);
}
diff --git a/os/hal/ports/STM32/STM32F4xx/stm32_rcc.h b/os/hal/ports/STM32/STM32F4xx/stm32_rcc.h index 9178f67da..b2d45d5aa 100644 --- a/os/hal/ports/STM32/STM32F4xx/stm32_rcc.h +++ b/os/hal/ports/STM32/STM32F4xx/stm32_rcc.h @@ -664,6 +664,24 @@ * @api
*/
#define rccResetOTG_HS() rccResetAHB1(RCC_AHB1RSTR_OTGHSRST)
+
+/**
+ * @brief Enables the OTG_HS peripheral clock.
+ *
+ * @param[in] lp low power enable flag
+ *
+ * @api
+ */
+#define rccEnableOTG_HSULPI(lp) rccEnableAHB1(RCC_AHB1ENR_OTGHSULPIEN, lp)
+
+/**
+ * @brief Disables the OTG_HS peripheral clock.
+ *
+ * @param[in] lp low power enable flag
+ *
+ * @api
+ */
+#define rccDisableOTG_HSULPI(lp) rccDisableAHB1(RCC_AHB1ENR_OTGHSULPIEN, lp)
/** @} */
/**
|