NXP Semiconductors LPC11U3x User Manual

UM10462 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved.
User manual Rev. 5.5 — 21 December 2016 214 of 523
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Chapter 10: LPC11U3x/2x/1x USB on-chip drivers
ReadEP
uint32_t(*uint32_t USBD_HW_API::ReadEP)(USBD_HANDLE_T hUsb, uint32_t EPNum, uint8_t *pData)
Function to read data received on the requested endpoint.
This function is called by USB stack and the application layer to read the data received on the
requested endpoint.
Parameters:
1. hUsb = Handle to the USB device stack.
2. EPNum = Endpoint number as per USB specification. ie. An EP1_IN is represented by 0x81
number.
3. pData = Pointer to the data buffer where data is to be copied.
Returns:
Returns the number of bytes copied to the buffer.
ReadReqEP
uint32_t(*uint32_t USBD_HW_API::ReadReqEP)(USBD_HANDLE_T hUsb, uint32_t EPNum, uint8_t *pData, uint32_t len)
Function to queue read request on the specified endpoint.
This function is called by USB stack and the application layer to queue a read request on the specified
endpoint.
Parameters:
1. hUsb = Handle to the USB device stack.
2. EPNum = Endpoint number as per USB specification. ie. An EP1_IN is represented by 0x81
number.
3. pData = Pointer to the data buffer where data is to be copied. This buffer address should be
accessible by USB DMA master.
4. len = Length of the buffer passed.
Returns:
Returns the length of the requested buffer.
ReadSetupPkt
uint32_t(*uint32_t USBD_HW_API::ReadSetupPkt)(USBD_HANDLE_T hUsb, uint32_t EPNum, uint32_t *pData)
Function to read setup packet data received on the requested endpoint.
This function is called by USB stack and the application layer to read setup packet data received on the
requested endpoint.
Parameters:
1. hUsb = Handle to the USB device stack.
2. EPNum = Endpoint number as per USB specification. ie. An EP0_IN is represented by 0x80
number.
3. pData = Pointer to the data buffer where data is to be copied.
Returns:
Returns the number of bytes copied to the buffer.
Table 208. USBD_HW_API class structure
Member Description

NXP Semiconductors LPC11U3x Specifications

General

Brand	NXP Semiconductors
Model	LPC11U3x
Category	Microcontrollers
Language	English