usb_drv.h File Reference

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Defines

#define MAX_EP_NB   7
#define EP_CONTROL   0
#define EP_1   1
#define EP_2   2
#define EP_3   3
#define EP_4   4
#define EP_5   5
#define EP_6   6
#define EP_7   7
#define PIPE_CONTROL   0
#define PIPE_0   0
#define PIPE_1   1
#define PIPE_2   2
#define PIPE_3   3
#define PIPE_4   4
#define PIPE_5   5
#define PIPE_6   6
#define PIPE_7   7
#define MSK_EP_DIR   0x7F
#define MSK_UADD   0x7F
#define MSK_EPTYPE   0xC0
#define MSK_EPSIZE   0x70
#define MSK_EPBK   0x0C
#define MSK_DTSEQ   0x0C
#define MSK_NBUSYBK   0x03
#define MSK_CURRBK   0x03
#define MSK_DAT   0xFF
#define MSK_BYCTH   0x07
#define MSK_BYCTL   0xFF
#define MSK_EPINT   0x7F
#define MSK_HADDR   0xFF
#define MSK_PNUM   0x07
#define MSK_PRST   0x7F
#define MSK_PTYPE   0xC0
#define MSK_PTOKEN   0x30
#define MSK_PEPNUM   0x0F
#define MSK_PSIZE   0x70
#define MSK_PBK   0x0C
#define MSK_NBUSYBK   0x03
#define MSK_ERROR   0x1F
#define MSK_PTYPE   0xC0
#define MSK_PTOKEN   0x30
#define MSK_TOKEN_SETUP   0x30
#define MSK_TOKEN_IN   0x10
#define MSK_TOKEN_OUT   0x20
#define MSK_PEPNUM   0x0F
#define MSK_PSIZE   0x70
#define MSK_PBK   0x0C
#define TYPE_CONTROL   0
#define TYPE_ISOCHRONOUS   1
#define TYPE_BULK   2
#define TYPE_INTERRUPT   3
#define DIRECTION_OUT   0
#define DIRECTION_IN   1
#define SIZE_8   0
#define SIZE_16   1
#define SIZE_32   2
#define SIZE_64   3
#define SIZE_128   4
#define SIZE_256   5
#define SIZE_512   6
#define SIZE_1024   7
#define ONE_BANK   0
#define TWO_BANKS   1
#define NYET_ENABLED   0
#define NYET_DISABLED   1
#define TOKEN_SETUP   0
#define TOKEN_IN   1
#define TOKEN_OUT   2
#define Is_ep_addr_in(x)   ( (x&USB_ENDPOINT_DIR_MASK)? TRUE : FALSE)
#define Usb_build_ep_config0(type, dir, nyet)   ((type<<6) | (nyet<<1) | (dir))
#define Usb_build_ep_config1(size, bank)   ((size<<4) | (bank<<2) )
#define usb_configure_endpoint(num, type, dir, size, bank, nyet)
#define Host_build_pipe_config0(type, token, ep_num)   ((type<<6) | (token<<4) | (ep_num))
#define Host_build_pipe_config1(size, bank)   ((size<<4) | (bank<<2) )
#define host_configure_pipe(num, type, token, ep_num, size, bank, freq)
#define Usb_enable_regulator()   (UHWCON |= (1<<UVREGE))
 Enable internal USB pads regulator.
#define Usb_disable_regulator()   (UHWCON &= ~(1<<UVREGE))
 Disable internal USB pads regulator.
#define Is_usb_regulator_enabled()   ((UHWCON & (1<<UVREGE)) ? TRUE : FALSE)
 Check regulator enable bit.
#define Usb_enable()   (USBCON |= ((1<<USBE) ))
 Enable USB interface.
#define Usb_disable()   (USBCON &= ~((1<<USBE)))
 Disable USB interface.
#define Usb_full_speed_mode()   (UDCON &= ~(1<<LSM))
 Use device full speed mode (default mode).
#define Usb_low_speed_mode()   (UDCON |= (1<<LSM))
 For device mode, force low speed mode.
#define Is_usb_enabled()   ((USBCON & (1<<USBE)) ? TRUE : FALSE)
#define Usb_enable_device()   (USBCON |= (1<<USBE))
#define Usb_disable_device()   (USBCON &= ~(1<<USBE))
#define Usb_reset_macro_only()   (UDCON &= ~(1<<RSTCPU))
#define Usb_reset_all_system()   (UDCON |= (1<<RSTCPU))
#define Usb_enable_vbus_pad()   (USBCON |= (1<<OTGPADE))
 Enable VBUS pad.
#define Usb_disable_vbus_pad()   (USBCON &= ~(1<<OTGPADE))
 Disable VBUS pad.
#define Usb_freeze_clock()   (USBCON |= (1<<FRZCLK))
 Stop internal USB clock in interface (freeze the interface register).
#define Usb_unfreeze_clock()   (USBCON &= ~(1<<FRZCLK))
#define Is_usb_clock_freezed()   ((USBCON & (1<<FRZCLK)) ? TRUE : FALSE)
#define MSK_IDTE_VBUSTE   ((1<<IDTE)|(1<<VBUSTE))
#define Usb_get_general_interrupt()   (USBINT & (USBCON & MSK_IDTE_VBUSTE))
 returns the USB general interrupts (interrupt enabled)
#define Usb_ack_all_general_interrupt()   (USBINT = ~(USBCON & MSK_IDTE_VBUSTE))
 acks the general interrupts (interrupt enabled)
#define Usb_ack_cache_id_transition(x)   ((x) &= ~(1<<IDTI))
#define Usb_ack_cache_vbus_transition(x)   ((x) &= ~(1<<VBUSTI))
#define Is_usb_cache_id_transition(x)   (((x) & (1<<IDTI)) )
#define Is_usb_cache_vbus_transition(x)   (((x) & (1<<VBUSTI)))
#define Usb_enable_vbus_interrupt()   (USBCON |= (1<<VBUSTE))
#define Usb_disable_vbus_interrupt()   (USBCON &= ~(1<<VBUSTE))
#define Is_usb_vbus_interrupt_enabled()   ((USBCON & (1<<VBUSTE)) ? TRUE : FALSE)
#define Is_usb_vbus_high()   ((USBSTA & (1<<VBUS)) ? TRUE : FALSE)
#define Is_usb_vbus_low()   ((USBSTA & (1<<VBUS)) ? FALSE : TRUE)
#define Usb_ack_vbus_transition()   (USBINT = ~(1<<VBUSTI))
#define Is_usb_vbus_transition()   ((USBINT & (1<<VBUSTI)) ? TRUE : FALSE)
#define Usb_initiate_remote_wake_up()   (UDCON |= (1<<RMWKUP))
 initiates a remote wake-up
#define Usb_detach()   (UDCON |= (1<<DETACH))
 detaches from USB bus
#define Usb_attach()   (UDCON &= ~(1<<DETACH))
 attaches to USB bus
#define Is_usb_pending_remote_wake_up()   ((UDCON & (1<<RMWKUP)) ? TRUE : FALSE)
 test if remote wake-up still running
#define Is_usb_detached()   ((UDCON & (1<<DETACH)) ? TRUE : FALSE)
 test if the device is detached
#define Usb_get_device_interrupt()   (UDINT & (1<<UDIEN))
 returns the USB device interrupts (interrupt enabled)
#define Usb_ack_all_device_interrupt()   (UDINT = ~(1<<UDIEN))
 acks the USB device interrupts (interrupt enabled)
#define Usb_enable_remote_wake_up_interrupt()   (UDIEN |= (1<<UPRSME))
 enables remote wake-up interrupt
#define Usb_disable_remote_wake_up_interrupt()   (UDIEN &= ~(1<<UPRSME))
 disables remote wake-up interrupt
#define Is_remote_wake_up_interrupt_enabled()   ((UDIEN & (1<<UPRSME)) ? TRUE : FALSE)
#define Usb_ack_remote_wake_up_start()   (UDINT = ~(1<<UPRSMI))
 acks remote wake-up
#define Is_usb_remote_wake_up_start()   ((UDINT & (1<<UPRSMI)) ? TRUE : FALSE)
 tests if remote wake-up still running
#define Usb_enable_resume_interrupt()   (UDIEN |= (1<<EORSME))
 enables resume interrupt
#define Usb_disable_resume_interrupt()   (UDIEN &= ~(1<<EORSME))
 disables resume interrupt
#define Is_resume_interrupt_enabled()   ((UDIEN & (1<<EORSME)) ? TRUE : FALSE)
#define Usb_ack_resume()   (UDINT = ~(1<<EORSMI))
 acks resume
#define Is_usb_resume()   ((UDINT & (1<<EORSMI)) ? TRUE : FALSE)
 tests if resume occurs
#define Usb_enable_wake_up_interrupt()   (UDIEN |= (1<<WAKEUPE))
 enables wake-up interrupt
#define Usb_disable_wake_up_interrupt()   (UDIEN &= ~(1<<WAKEUPE))
 disables wake-up interrupt
#define Is_wake_up_interrupt_enabled()   ((UDIEN & (1<<WAKEUPE)) ? TRUE : FALSE)
#define Usb_ack_wake_up()   (UDINT = ~(1<<WAKEUPI))
 acks wake-up
#define Is_usb_wake_up()   ((UDINT & (1<<WAKEUPI)) ? TRUE : FALSE)
 tests if wake-up occurs
#define Usb_enable_reset_interrupt()   (UDIEN |= (1<<EORSTE))
 enables USB reset interrupt
#define Usb_disable_reset_interrupt()   (UDIEN &= ~(1<<EORSTE))
 disables USB reset interrupt
#define Is_reset_interrupt_enabled()   ((UDIEN & (1<<EORSTE)) ? TRUE : FALSE)
#define Usb_ack_reset()   (UDINT = ~(1<<EORSTI))
 acks USB reset
#define Is_usb_reset()   ((UDINT & (1<<EORSTI)) ? TRUE : FALSE)
 tests if USB reset occurs
#define Usb_enable_sof_interrupt()   (UDIEN |= (1<<SOFE))
 enables Start Of Frame Interrupt
#define Usb_disable_sof_interrupt()   (UDIEN &= ~(1<<SOFE))
 disables Start Of Frame Interrupt
#define Is_sof_interrupt_enabled()   ((UDIEN & (1<<SOFE)) ? TRUE : FALSE)
#define Usb_ack_sof()   (UDINT = ~(1<<SOFI))
 acks Start Of Frame
#define Is_usb_sof()   ((UDINT & (1<<SOFI)) ? TRUE : FALSE)
 tests if Start Of Frame occurs
#define Usb_enable_suspend_interrupt()   (UDIEN |= (1<<SUSPE))
 enables suspend state interrupt
#define Usb_disable_suspend_interrupt()   (UDIEN &= ~(1<<SUSPE))
 disables suspend state interrupt
#define Is_suspend_interrupt_enabled()   ((UDIEN & (1<<SUSPE)) ? TRUE : FALSE)
 test if suspend interrupt is enabled
#define Usb_ack_suspend()   (UDINT = ~(1<<SUSPI))
 acks Suspend
#define Is_usb_suspend()   ((UDINT & (1<<SUSPI)) ? TRUE : FALSE)
 tests if Suspend state detected
#define Usb_enable_address()   (UDADDR |= (1<<ADDEN))
 enables USB device address
#define Usb_disable_address()   (UDADDR &= ~(1<<ADDEN))
 disables USB device address
#define Is_usb_addressed()   ((UDADDR & (1<<ADDEN)) ? TRUE : FALSE)
 test if device is adressed
#define Usb_configure_address(addr)   (UDADDR = (UDADDR & (1<<ADDEN)) | ((U8)addr & MSK_UADD))
 sets the USB device address
#define Usb_frame_number()   ((U16)((((U16)UDFNUMH) << 8) | ((U16)UDFNUML)))
 returns the last frame number
#define Is_usb_frame_number_crc_error()   ((UDMFN & (1<<FNCERR)) ? TRUE : FALSE)
 tests if a crc error occurs in frame number
#define Usb_select_endpoint(ep)   (UENUM = (U8)ep )
 selects the endpoint number to interface with the CPU
#define Usb_get_selected_endpoint()   (UENUM )
 get the currently selected endpoint number
#define Usb_reset_endpoint(ep)   (UERST = 1 << (U8)ep, UERST = 0)
 resets the selected endpoint
#define Usb_enable_endpoint()   (UECONX |= (1<<EPEN))
 enables the current endpoint
#define Usb_enable_stall_handshake()   (UECONX |= (1<<STALLRQ))
 enables the STALL handshake for the next transaction
#define Usb_reset_data_toggle()   (UECONX |= (1<<RSTDT))
 resets the data toggle sequence
#define Usb_disable_endpoint()   (UECONX &= ~(1<<EPEN))
 disables the current endpoint
#define Usb_disable_stall_handshake()   (UECONX |= (1<<STALLRQC))
 disables the STALL handshake
#define Usb_select_epnum_for_cpu()   (UECONX &= ~(1<<EPNUMS))
 selects endpoint interface on CPU
#define Is_usb_endpoint_enabled()   ((UECONX & (1<<EPEN)) ? TRUE : FALSE)
 tests if the current endpoint is enabled
#define Is_usb_endpoint_stall_requested()   ((UECONX & (1<<STALLRQ)) ? TRUE : FALSE)
 tests if STALL handshake request is running
#define Usb_configure_endpoint_type(type)   (UECFG0X = (UECFG0X & ~(MSK_EPTYPE)) | ((U8)type << 6))
 configures the current endpoint
#define Usb_configure_endpoint_direction(dir)   (UECFG0X = (UECFG0X & ~(1<<EPDIR)) | ((U8)dir))
 configures the current endpoint direction
#define Usb_configure_endpoint_size(size)   (UECFG1X = (UECFG1X & ~MSK_EPSIZE) | ((U8)size << 4))
 configures the current endpoint size
#define Usb_configure_endpoint_bank(bank)   (UECFG1X = (UECFG1X & ~MSK_EPBK) | ((U8)bank << 2))
 configures the current endpoint number of banks
#define Usb_allocate_memory()   (UECFG1X |= (1<<ALLOC))
 allocates the current configuration in DPRAM memory
#define Usb_unallocate_memory()   (UECFG1X &= ~(1<<ALLOC))
 un-allocates the current configuration in DPRAM memory
#define Usb_ack_overflow_interrupt()   (UESTA0X &= ~(1<<OVERFI))
 acks endpoint overflow interrupt
#define Usb_ack_underflow_interrupt()   (UESTA0X &= ~(1<<UNDERFI))
 acks endpoint underflow memory
#define Usb_ack_zlp()   (UESTA0X &= ~(1<<ZLPSEEN))
 acks Zero Length Packet received
#define Usb_data_toggle()   ((UESTA0X&MSK_DTSEQ) >> 2)
 returns data toggle
#define Usb_nb_busy_bank()   (UESTA0X & MSK_NBUSYBK)
 returns the number of busy banks
#define Is_usb_one_bank_busy()   ((UESTA0X & MSK_NBUSYBK) == 0 ? FALSE : TRUE)
 tests if at least one bank is busy
#define Is_endpoint_configured()   ((UESTA0X & (1<<CFGOK)) ? TRUE : FALSE)
 tests if current endpoint is configured
#define Is_usb_overflow()   ((UESTA0X & (1<<OVERFI)) ? TRUE : FALSE)
 tests if an overflows occurs
#define Is_usb_underflow()   ((UESTA0X & (1<<UNDERFI)) ? TRUE : FALSE)
 tests if an underflow occurs
#define Is_usb_zlp()   ((UESTA0X & (1<<ZLPSEEN)) ? TRUE : FALSE)
 tests if a ZLP has been detected
#define Usb_control_direction()   ((UESTA1X & (1<<CTRLDIR)) >> 2)
 returns the control direction
#define Usb_current_bank()   ( UESTA1X & MSK_CURRBK)
 returns the number of the current bank
#define Usb_ack_fifocon()   (UEINTX &= ~(1<<FIFOCON))
 clears FIFOCON bit
#define Usb_ack_nak_in()   (UEINTX &= ~(1<<NAKINI))
 acks NAK IN received
#define Usb_ack_nak_out()   (UEINTX &= ~(1<<NAKOUTI))
 acks NAK OUT received
#define Usb_ack_receive_setup()   (UEINTX &= ~(1<<RXSTPI))
 acks receive SETUP
#define Usb_ack_receive_out()   (UEINTX &= ~(1<<RXOUTI), Usb_ack_fifocon())
 acks reveive OUT
#define Usb_ack_stalled()   (MSK_STALLEDI= 0)
 acks STALL sent
#define Usb_ack_in_ready()   (UEINTX &= ~(1<<TXINI), Usb_ack_fifocon())
 acks IN ready
#define Usb_kill_last_in_bank()   (UENTTX |= (1<<RXOUTI))
 Kills last bank.
#define Is_usb_read_enabled()   (UEINTX&(1<<RWAL))
 tests if endpoint read allowed
#define Is_usb_write_enabled()   (UEINTX&(1<<RWAL))
 tests if endpoint write allowed
#define Is_usb_read_control_enabled()   (UEINTX&(1<<TXINI))
 tests if read allowed on control endpoint
#define Is_usb_nak_in_sent()   (UEINTX&(1<<NAKINI))
 tests if a NAK has been sent on IN endpoint
#define Is_usb_nak_out_sent()   (UEINTX&(1<<NAKOUTI))
 tests if a NAK has been sent on OUT endpoint
#define Is_usb_receive_setup()   (UEINTX&(1<<RXSTPI))
 tests if SETUP received
#define Is_usb_receive_out()   (UEINTX&(1<<RXOUTI))
 tests if OUT received
#define Is_usb_in_ready()   (UEINTX&(1<<TXINI))
 tests if IN ready
#define Usb_send_in()   (UEINTX &= ~(1<<FIFOCON))
 sends IN
#define Usb_send_control_in()   (UEINTX &= ~(1<<TXINI))
 sends IN on control endpoint
#define Usb_free_out_bank()   (UEINTX &= ~(1<<FIFOCON))
 frees OUT bank
#define Usb_ack_control_out()   (UEINTX &= ~(1<<RXOUTI))
 acks OUT on control endpoint
#define Usb_enable_flow_error_interrupt()   (UEIENX |= (1<<FLERRE))
 enables flow error interrupt
#define Usb_enable_nak_in_interrupt()   (UEIENX |= (1<<NAKINE))
 enables NAK IN interrupt
#define Usb_enable_nak_out_interrupt()   (UEIENX |= (1<<NAKOUTE))
 enables NAK OUT interrupt
#define Usb_enable_receive_setup_interrupt()   (UEIENX |= (1<<RXSTPE))
 enables receive SETUP interrupt
#define Usb_enable_receive_out_interrupt()   (UEIENX |= (1<<RXOUTE))
 enables receive OUT interrupt
#define Usb_enable_stalled_interrupt()   (UEIENX |= (1<<STALLEDE))
 enables STALL sent interrupt
#define Usb_enable_in_ready_interrupt()   (UEIENX |= (1<<TXIN))
 enables IN ready interrupt
#define Usb_disable_flow_error_interrupt()   (UEIENX &= ~(1<<FLERRE))
 disables flow error interrupt
#define Usb_disable_nak_in_interrupt()   (UEIENX &= ~(1<<NAKINE))
 disables NAK IN interrupt
#define Usb_disable_nak_out_interrupt()   (UEIENX &= ~(1<<NAKOUTE))
 disables NAK OUT interrupt
#define Usb_disable_receive_setup_interrupt()   (UEIENX &= ~(1<<RXSTPE))
 disables receive SETUP interrupt
#define Usb_disable_receive_out_interrupt()   (UEIENX &= ~(1<<RXOUTE))
 disables receive OUT interrupt
#define Usb_disable_stalled_interrupt()   (UEIENX &= ~(1<<STALLEDE))
 disables STALL sent interrupt
#define Usb_disable_in_ready_interrupt()   (UEIENX &= ~(1<<TXIN))
 disables IN ready interrupt
#define Usb_read_byte()   (UEDATX)
 returns FIFO byte for current endpoint
#define Usb_write_byte(byte)   (UEDATX = (U8)byte)
 writes byte in FIFO for current endpoint
#define Usb_byte_counter()   ((U8)(UEBCLX))
 returns number of bytes in FIFO current endpoint (16 bits)
#define Usb_byte_counter_8()   ((U8)UEBCLX)
 returns number of bytes in FIFO current endpoint (8 bits)
#define Usb_interrupt_flags()   (UEINT)
 tests the general endpoint interrupt flags
#define Is_usb_endpoint_event()   (Usb_interrupt_flags() != 0x00)
 tests the general endpoint interrupt flags
#define wSWAP(x)
 wSWAP This macro swaps the U8 order in words.
#define Usb_write_word_enum_struc(x)   (wSWAP(x))
 Usb_write_word_enum_struc This macro help to fill the U16 fill in USB enumeration struct.

Typedefs

typedef enum
endpoint_parameter 
t_endpoint_parameter

Enumerations

enum  endpoint_parameter {
  ep_num, ep_type, ep_direction, ep_size,
  ep_bank, nyet_status
}

Functions

U8 usb_config_ep (U8, U8)
 usb_configure_endpoint.
U8 usb_select_enpoint_interrupt (void)
 usb_select_endpoint_interrupt.
U16 usb_get_nb_byte_epw (void)
U8 usb_send_packet (U8, U8 *, U8)
 usb_send_packet.
U8 usb_read_packet (U8, U8 *, U8)
 usb_read_packet.
void usb_halt_endpoint (U8)
 usb_halt_endpoint.
void usb_reset_endpoint (U8)
U8 usb_init_device (void)
 usb_init_device.


Detailed Description

This file contains the USB low level driver definition - Compiler: IAR EWAVR and GNU GCC for AVR

Definition in file usb_drv.h.


Typedef Documentation

typedef enum endpoint_parameter t_endpoint_parameter


Enumeration Type Documentation

enum endpoint_parameter

Enumerator:
ep_num 
ep_type 
ep_direction 
ep_size 
ep_bank 
nyet_status 

Definition at line 51 of file usb_drv.h.


Function Documentation

U8 usb_config_ep ( U8  config0,
U8  config1 
)

usb_configure_endpoint.

This function configures an endpoint with the selected type.

Parameters:
config0 
config1 
Returns:
Is_endpoint_configured.

Definition at line 68 of file usb_drv.c.

References Is_endpoint_configured, Usb_allocate_memory, and Usb_enable_endpoint.

00069 {
00070     Usb_enable_endpoint();
00071     UECFG0X = config0;
00072     UECFG1X = (UECFG1X & (1<<ALLOC)) | config1;
00073     Usb_allocate_memory();
00074     return (Is_endpoint_configured());
00075 }

U8 usb_select_enpoint_interrupt ( void   ) 

usb_select_endpoint_interrupt.

This function select the endpoint where an event occurs and returns the number of this endpoint. If no event occurs on the endpoints, this function returns 0.

Parameters:
none 
Returns:
endpoint number.

Definition at line 88 of file usb_drv.c.

References ep_num, MAX_EP_NB, and Usb_interrupt_flags.

00089 {
00090 U8 interrupt_flags;
00091 U8 ep_num;
00092 
00093    ep_num = 0;
00094    interrupt_flags = Usb_interrupt_flags();
00095 
00096    while(ep_num < MAX_EP_NB)
00097    {
00098       if (interrupt_flags & 1)
00099       {
00100          return (ep_num);
00101       }
00102       else
00103       {
00104          ep_num++;
00105          interrupt_flags = interrupt_flags >> 1;
00106       }
00107    }
00108    return 0;
00109 }

U16 usb_get_nb_byte_epw ( void   ) 

U8 usb_send_packet ( U8  ep_num,
U8 tbuf,
U8  data_length 
)

usb_send_packet.

This function moves the data pointed by tbuf to the selected endpoint fifo and sends it through the USB.

Parameters:
ep_num number of the addressed endpoint
*tbuf address of the first data to send
data_length number of bytes to send
Returns:
address of the next U8 to send.
Example: usb_send_packet(3,&first_data,0x20); // send packet on the endpoint #3 while(!(Usb_tx_complete)); // wait packet ACK'ed by the Host Usb_clear_tx_complete(); // acknowledge the transmit

Note: tbuf is incremented of 'data_length'.

Definition at line 131 of file usb_drv.c.

References Is_usb_write_enabled, Usb_select_endpoint, and Usb_write_byte.

00132 {
00133 U8 remaining_length;
00134 
00135    remaining_length = data_length;
00136    Usb_select_endpoint(ep_num);
00137    while(Is_usb_write_enabled() && (0 != remaining_length))
00138    {
00139       Usb_write_byte(*tbuf);
00140       remaining_length--;
00141       tbuf++;
00142    }
00143    return remaining_length;
00144 }

U8 usb_read_packet ( U8  ep_num,
U8 rbuf,
U8  data_length 
)

usb_read_packet.

This function moves the data stored in the selected endpoint fifo to the address specified by *rbuf.

Parameters:
ep_num number of the addressed endpoint
*rbuf aaddress of the first data to write with the USB data
data_length number of bytes to read
Returns:
address of the next U8 to send.
Example: while(!(Usb_rx_complete)); // wait new packet received usb_read_packet(4,&first_data,usb_get_nb_byte); // read packet from ep 4 Usb_clear_rx(); // acknowledge the transmit

Note: rbuf is incremented of 'data_length'.

Definition at line 166 of file usb_drv.c.

References Is_usb_read_enabled, Usb_read_byte, and Usb_select_endpoint.

00167 {
00168 U8 remaining_length;
00169 
00170    remaining_length = data_length;
00171    Usb_select_endpoint(ep_num);
00172 
00173    while(Is_usb_read_enabled() && (0 != remaining_length))
00174    {
00175       *rbuf = Usb_read_byte();
00176       remaining_length--;
00177       rbuf++;
00178    }
00179    return remaining_length;
00180 }

void usb_halt_endpoint ( U8  ep_num  ) 

usb_halt_endpoint.

This function sends a STALL handshake for the next Host request. A STALL handshake will be send for each next request untill a SETUP or a Clear Halt Feature occurs for this endpoint.

Parameters:
ep_num number of the addressed endpoint
Returns:
none

Definition at line 192 of file usb_drv.c.

References Usb_enable_stall_handshake, and Usb_select_endpoint.

00193 {
00194    Usb_select_endpoint(ep_num);
00195    Usb_enable_stall_handshake();
00196 }

void usb_reset_endpoint ( U8   ) 

U8 usb_init_device ( void   ) 

usb_init_device.

This function initializes the USB device controller and configures the Default Control Endpoint.

Parameters:
none 
Returns:
status

Definition at line 208 of file usb_drv.c.

References DIRECTION_OUT, EP_CONTROL, FALSE, Is_usb_endpoint_enabled, NYET_DISABLED, ONE_BANK, SIZE_32, SIZE_8, TYPE_CONTROL, usb_configure_endpoint, and Usb_select_endpoint.

00209 {
00210       Usb_select_endpoint(EP_CONTROL);
00211       if(!Is_usb_endpoint_enabled())
00212       {
00213 #if (USB_LOW_SPEED_DEVICE==DISABLE)
00214          return usb_configure_endpoint(EP_CONTROL,    \
00215                                 TYPE_CONTROL,  \
00216                                 DIRECTION_OUT, \
00217                                 SIZE_32,       \
00218                                 ONE_BANK,      \
00219                                 NYET_DISABLED);
00220 #else
00221          return usb_configure_endpoint(EP_CONTROL,    \
00222                                 TYPE_CONTROL,  \
00223                                 DIRECTION_OUT, \
00224                                 SIZE_8,       \
00225                                 ONE_BANK,      \
00226                                 NYET_DISABLED);
00227 
00228 #endif         
00229       }
00230    return FALSE;
00231 }


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