diff options
Diffstat (limited to 'components')
| -rw-r--r-- | components/drivers/usb/usbdevice/class/cdc_vcom.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/components/drivers/usb/usbdevice/class/cdc_vcom.c b/components/drivers/usb/usbdevice/class/cdc_vcom.c index 0e0b3c7d1a..4cb3ec5551 100644 --- a/components/drivers/usb/usbdevice/class/cdc_vcom.c +++ b/components/drivers/usb/usbdevice/class/cdc_vcom.c @@ -31,7 +31,9 @@ static struct serial_ringbuffer vcom_int_rx; static struct rt_serial_device vcom_serial; #define CDC_MaxPacketSize 64 +ALIGN(RT_ALIGN_SIZE) static rt_uint8_t rx_buf[CDC_MaxPacketSize]; +ALIGN(RT_ALIGN_SIZE) static rt_uint8_t tx_buf[CDC_MaxPacketSize]; static rt_bool_t vcom_connected = RT_FALSE; @@ -148,6 +150,7 @@ const static char* _ustring[] = "Interface", }; +static rt_bool_t _in_sending; /** * This function will handle cdc bulk in endpoint request. * @@ -167,7 +170,14 @@ static rt_err_t _ep_in_handler(udevice_t device, uclass_t cls, rt_size_t size) mps = eps->ep_in->ep_desc->wMaxPacketSize; size = RT_RINGBUFFER_SIZE(&tx_ringbuffer); if(size == 0) + { + if (_in_sending) + { + _in_sending = RT_FALSE; + dcd_ep_write(device->dcd, eps->ep_in, RT_NULL, 0); + } return RT_EOK; + } length = size > mps ? mps : size; @@ -398,6 +408,7 @@ static rt_err_t _class_sof_handler(udevice_t device, uclass_t cls) if(size == 0) return -RT_EFULL; + _in_sending = RT_TRUE; size = size > mps ? mps : size; level = rt_hw_interrupt_disable(); @@ -415,7 +426,6 @@ static struct uclass_ops ops = { _class_run, _class_stop, - /*RT_NULL,*/ _class_sof_handler, }; |