Silicon Laboratories SiM3U1xx Manual do Utilizador descarregar pdf (Página 10)

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10 Rev. 0.1

5.1.6. CDC_Device_ReceiveByte

USB CDC receive one byte from USB OUT FIFO.

Syntax

int16_t CDC_Device_ReceiveByte(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)

Parameters

CDCInterfaceInfo: Pointer to CDC Class state structure

Return Value

-1: if no data received

Data: one byte from USB data out FIFO.

Description

This function receives one byte from USB data out FIFO. It returns -1 if no data received.

Example

uint32_t out_buff;

out_buff = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);

5.1.7. CDC_Device_SendControlLineStateChange

USB CDC notification.

Syntax

void CDC_Device_SendControlLineStateChange(USB_ClassInfo_CDC_Device_t* const

CDCInterfaceInfo)

Parameters

CDCInterfaceInfo: Pointer to CDC Class state structure

Return Value

None

Description

This function sends state data to notification endpoint.

Example

CDC_Device_SendControlLineStateChange(CDCInterfaceInfo);

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Silicon Laboratories SiM3U1xx Manual do Utilizador Página 10