USB device standard requests decoding

Definiciones
#define	ATTACHED   0
#define	POWERED   1
#define	DEFAULT   2
#define	ADDRESSED   3
#define	CONFIGURED   4
#define	SUSPENDED   5
#define	USB_REMOTE_WAKEUP   1
#define	OTG_B_HNP_ENABLE   3
#define	OTG_A_HNP_SUPPORT   4
#define	OTG_A_ALT_HNP_SUPPORT   5
#define	Is_device_enumerated()   ((usb_configuration_nb!=0) ? TRUE : FALSE)
#define	Is_device_not_enumerated()   ((usb_configuration_nb!=0) ? FALSE : TRUE)
Funciones
void	usb_process_request (void)
void	usb_generate_remote_wakeup (void)
Variables
U8	usb_configuration_nb

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Documentación de las definiciones

#define ADDRESSED   3

#define ATTACHED   0

#define CONFIGURED   4

#define DEFAULT   2

 

#define Is_device_enumerated

(

)

((usb_configuration_nb!=0) ? TRUE : FALSE)

Returns true when device connected and correctly enumerated with an host. The device high level application should tests this before performing any applicative requests.

 

#define Is_device_not_enumerated

(

)

((usb_configuration_nb!=0) ? FALSE : TRUE)

#define OTG_A_ALT_HNP_SUPPORT   5

#define OTG_A_HNP_SUPPORT   4

#define OTG_B_HNP_ENABLE   3

#define POWERED   1

#define SUSPENDED   5

#define USB_REMOTE_WAKEUP   1

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Documentación de las funciones

void usb_generate_remote_wakeup

(

void

)

This function manages the remote wakeup generation to wake up the host controlle.

If the received request is not supported or a none USB standard request, the function will call for custom decoding function in usb_specific_request module.

Parámetros:

none

Devuelve:

none

This function manages the remote wake up generation

void usb_process_request

(

void

)

This function reads the SETUP request sent to the default control endpoint and calls the appropriate function. When exiting of the usb_read_request function, the device is ready to manage the next request.

If the received request is not supported or a none USB standard request, the function will call for custom decoding function in usb_specific_request module.

Parámetros:

none

Devuelve:

none

Nota:

list of supported requests: SETUP_GET_DESCRIPTOR SETUP_GET_CONFIGURATION SETUP_SET_ADDRESS SETUP_SET_CONFIGURATION SETUP_CLEAR_FEATURE SETUP_SET_FEATURE SETUP_GET_STATUS

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Documentación de las variables

U8 usb_configuration_nb