usb_host_task.h File Reference

#include "conf_usb.h"
#include "compiler.h"
#include "usb_host_enum.h"

Data Structures
struct	S_pipe_int

Macros
#define	DEVICE_ADDRESSED   4
#define	DEVICE_ATTACHED   1
#define	DEVICE_CONFIGURED   5
#define	DEVICE_DEFAULT   3
#define	DEVICE_ERROR   7
#define	DEVICE_POWERED   2
#define	DEVICE_READY   6
#define	DEVICE_SUSPENDED   8
#define	DEVICE_UNATTACHED   0
#define	DEVICE_WAIT_RESUME   9
#define	Host_ack_request_resume()   (request_resume = false)
	Private ack for resume software event. More...
#define	Host_clear_configured()   (Clr_bits(device_status, 0x04))
#define	Host_clear_device_ready()   (Clr_bits(device_status, 0x02))
#define	Host_clear_device_status()   (device_status = 0x00)
#define	Host_clear_device_supported()   (Clr_bits(device_status, 0x01))
#define	Host_request_resume()   (request_resume = true)
	Should be called to request the host controller to resume the USB bus. More...
#define	Host_request_suspend()   (device_state = DEVICE_SUSPENDED)
	Should be called to make the host controller enter USB suspend mode. More...
#define	Host_set_configured()   (Set_bits(device_status, 0x04))
#define	Host_set_device_ready()   (Set_bits(device_status, 0x02))
#define	Host_set_device_supported()   (Set_bits(device_status, 0x01))
#define	Is_host_addressed()   (device_state >= DEVICE_ADDRESSED)
	Check if there is a device addressed by the host. More...
#define	Is_host_attached()   (device_state >= DEVICE_ATTACHED)
	Check if there is a device attached to the host. More...
#define	Is_host_configured()   (Tst_bits(device_status, 0x04))
#define	Is_host_device_ready()   (Tst_bits(device_status, 0x02))
#define	Is_host_device_supported()   (Tst_bits(device_status, 0x01))
#define	Is_host_error()   (device_state == DEVICE_ERROR)
	Check if there is an error. More...
#define	Is_host_powered()   (device_state >= DEVICE_POWERED)
	Check if there is a device powered by the host. More...
#define	Is_host_ready()   (device_state == DEVICE_READY)
	Returns true when device connected and correctly enumerated. More...
#define	Is_host_request_resume()   (request_resume == true)
	Private check for resume sequence. More...
#define	Is_host_suspended()
	Check if host controller is in suspend mode. More...
#define	PIPE_CRC16   0x10
#define	PIPE_DATA_PID   0x02
#define	PIPE_DATA_TOGGLE   0x01
#define	PIPE_DELAY_TIMEOUT   0x80
#define	PIPE_GOOD   0x00
#define	PIPE_NAK_TIMEOUT   0x40
#define	PIPE_PID   0x04
#define	PIPE_STALL   0x20
#define	PIPE_TIMEOUT   0x08

Typedefs
typedef void	Pipe_handler (Status_t status, U16 nb_byte)

Functions
Status_t	host_get_data (U8 pipe, U16 *nb_data, void *ptr_buf)
	This function receives nb_data bytes pointed to by ptr_buf on the specified pipe. More...
Status_t	host_send_data (U8 pipe, U16 nb_data, const void *ptr_buf)
	This function sends nb_data bytes pointed to by ptr_buf on the specified pipe. More...
void	usb_host_task (void)
	Entry point of the USB host management. More...
void	usb_host_task_init (void)
	This function initializes the USB host controller. More...

Variables
U8	data_stage [SIZEOF_DATA_STAGE]
	Public: U8 data_stage[SIZEOF_DATA_STAGE] Internal RAM buffer for USB data stage content This buffer is required to setup host enumeration process It contains the device descriptors received. More...
volatile U8	device_state
	Public: U8 device_state Its value represents the current state of the device connected to the USB host controller Value can be: More...
volatile U8	device_status
volatile bool	request_resume
volatile S_usb_setup_data	usb_request
	For control requests management over control pipe. More...