Silicon Laboratories SiM3U1xx Bedienungsanleitung PDF herunterladen (Seite 21)

AN758

Rev. 0.1 21

5.4.6. USB_Init

USB hardware initialization.

Syntax

void USB_Init(const uint8_t Options)

Parameters

Options: USB Device Mode Option

Return Value

None

Description

This function initializes USB hardware. Set full or low speed. Turn on USB 48 MHz oscillators. Enable USB

interrupt. Configure Endpoint to default state. Enable internal pull up resistor to attach USB device.

Example

USB_Init(USB_DEVICE_OPT_FULLSPEED);

5.4.7. USB0_IRQHandler

USB interrupt handler.

Syntax

void USB0_IRQHandler(void)

Parameters

None

Return Value

None

Description

This function handles all enabled USB device interrupt. Clear interrupt flag. Execute handler function.

Example

When USB interrupt happened, PC will jump to vector table and then jump into this function.

5.4.8. USB0_ep0_handler

Handle endpoint 0 request.

Syntax

void USB0_ep0_handler(void)

Parameters

None

Return Value

None

Description

This function handles all endpoint 0 request.

Example

if (usbEpInterruptMask & SI32_USB_A_IOINT_EP0I_MASK)

{

USB0_ep0_handler();

return;

}

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 29 30

Kommentare zu diesen Handbüchern

Keine Kommentare

Silicon Laboratories SiM3U1xx Bedienungsanleitung Seite 21

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Prozessoren Silicon Laboratories SiM3U1xx