MPLAB Harmony USB Stack
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This function returns true if the endpoint is enabled. The application can use this function when handling Set Interface requests in case of Vendor or Custom USB devices.
bool USB_DEVICE_EndpointIsEnabled( USB_DEVICE_HANDLE usbDeviceHandle, USB_ENDPOINT_ADDRESS endpoint );
The device should have been configured.
Parameters |
Description |
usbDeviceHandle |
USB Device Layer Handle. |
endpoint |
Endpoint to disable. |
true - The endpoint is enabled.
false - The endpoint is not enabled or the specified endpoint is not provisioned in the system and is invalid.
None.
// The following code example checks if an Set Alternate request has // been received and changes the endpoint characteristics based on the // alternate setting. Endpoint is 1 and direction is device to host. // Assume that endpoint size was 32 bytes in alternate setting 0. if(setAlternateRequest) { if(alternateSetting == 1) { // Check if the endpoint is already enabled. if(USB_DEVICE_EndpointIsEnabled(usbDeviceHandle, (0x1|USB_EP_DIRECTION_IN))) { // Disable the endpoint. USB_DEVICE_EndpointDisable(usbDeviceHandle, (0x1|USB_EP_DIRECTION_IN)); } // Re-enable the endpoint with new settings USB_DEVICE_EndpointEnable(usbDeviceHandle, (0x1|USB_EP_DIRECTION_IN) USB_TRANSFER_TYPE_BULK, 64); } }
MPLAB Harmony USB Stack
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