Datasheet

6.3.1 Use loop instead of list
For example, the USB_DeviceCdcVcomConfigureEndpointStatus () function in the virtual_com.c file:
usb_status_t USB_DeviceCdcVcomConfigureEndpointStatus(usb_device_handle handle, uint8_t ep, uint8_t
status)
{
usb_status_t error = kStatus_USB_Error;
if (status)
{
if ((USB_CDC_VCOM_DIC_BULK_IN_ENDPOINT == (ep & USB_ENDPOINT_NUMBER_MASK)) &&
(ep & USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_MASK))
{
error = USB_DeviceStallEndpoint(handle, ep);
}
else if ((USB_CDC_VCOM_DIC_BULK_OUT_ENDPOINT == (ep & USB_ENDPOINT_NUMBER_MASK)) &&
(!(ep & USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_MASK)))
{
error = USB_DeviceStallEndpoint(handle, ep);
}
else if ((USB_CDC_VCOM_DIC_BULK_IN_ENDPOINT_2 == (ep & USB_ENDPOINT_NUMBER_MASK)) &&
(ep & USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_MASK))
{
error = USB_DeviceStallEndpoint(handle, ep);
}
else if ((USB_CDC_VCOM_DIC_BULK_OUT_ENDPOINT_2 == (ep & USB_ENDPOINT_NUMBER_MASK)) &&
( !(ep & USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_MASK)))
{
error = USB_DeviceStallEndpoint(handle, ep);
}
else
{
}
}
else
{
if ((USB_CDC_VCOM_DIC_BULK_IN_ENDPOINT == (ep & USB_ENDPOINT_NUMBER_MASK)) &&
(ep & USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_MASK))
{
error = USB_DeviceUnstallEndpoint(handle, ep);
}
else if ((USB_CDC_VCOM_DIC_BULK_OUT_ENDPOINT == (ep & USB_ENDPOINT_NUMBER_MASK)) &&
(!(ep & USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_MASK)))
{
error = USB_DeviceUnstallEndpoint(handle, ep);
}
else if ((USB_CDC_VCOM_DIC_BULK_IN_ENDPOINT_2 == (ep & USB_ENDPOINT_NUMBER_MASK)) &&
(ep & USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_MASK))
{
error = USB_DeviceUnstallEndpoint(handle, ep);
}
else if ((USB_CDC_VCOM_DIC_BULK_OUT_ENDPOINT_2 == (ep & USB_ENDPOINT_NUMBER_MASK)) &&
(!(ep & USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_MASK)))
{
error = USB_DeviceUnstallEndpoint(handle, ep);
}
else
{
}
NXP Semiconductors
Key Steps
USB to Multi VCOM on K32L2 Series MCU, Rev. 0, November 2019
Application Note 19 / 25