📄 usb.c
字号:
return;
}
}
if (UsbCtrlCmd.wLength > data_to_send)
{
if ((data_to_send % 8) == 0)
{
zeroflag = TRUE;
}
else
{
zeroflag = FALSE;
}
}
else
{
data_to_send = UsbCtrlCmd.wLength;
}
Usb_clr_rxsetup_bit() ;
while (data_to_send > 8)
{
Usb_sel_ep(0);
for(i=0;i<8;i++){
UEPDATX = G_pucCtrlDataPointer[desc_ptr] ;
desc_ptr ++;
}
data_to_send = data_to_send - 8;
ret = usb_send_data();
if (ret == 1)return;
}
Usb_sel_ep(0);
for(i=0;i<data_to_send;i++){
UEPDATX = G_pucCtrlDataPointer[desc_ptr] ;
desc_ptr ++;
}
data_to_send = 0;
ret = usb_send_data();
if (ret == 1)return;
if (zeroflag == TRUE)
{
ret = usb_send_data();
if (ret == 1)return;
}
while ((!(Usb_receive_out_data())) && (!(Usb_setup_packet_receive())));
if (Usb_setup_packet_receive())
{
return;
}
if (Usb_receive_out_data())
{
Usb_clear_DIR_bit();
Usb_clear_RXOUTB0_bit();
}
}
/**************************************************************************
*
* Function Name:usb_send_data
*
* Descriptions:
*
* Arguments:
*
* Returns: None
*
**************************************************************************/
UINT8 usb_send_data (void)
{
Usb_set_TXRDY_bit(); /*send zero packet*/
while ((!(Usb_receive_out_data())) && (!(Usb_send_data_complete())));
if ((Usb_receive_out_data()))
{
Usb_clear_RXOUTB0_bit();
return 1;
}
if (Usb_send_data_complete())
{
Usb_clear_TXCMPL_bit();
}
return 0;
}
/**************************************************************************
*
* Function Name:usb_set_address
*
* Descriptions:
*
* Arguments:
*
* Returns: None
*
**************************************************************************/
void usb_set_address (void)
{
UINT8 add;
Usb_clear_DIR_bit();
add = UsbCtrlCmd.wValue&0x00ff;
Usb_set_EP0RST();
Usb_clr_EP0RST();
Usb_clr_rxsetup_bit();
Usb_set_FADDEN_bit();
Usb_set_TXRDY_bit();
while (!(Usb_send_data_complete()));
Usb_clear_TXCMPL_bit();
Usb_set_USBADDR(add);
}
/**************************************************************************
*
* Function Name:usb_get_configuration
*
* Descriptions:
*
* Arguments:
*
* Returns: None
*
**************************************************************************/
void usb_get_configuration (void)
{
Usb_clr_rxsetup_bit();
Usb_set_DIR_bit();
if (USBCON & 0x02)
{
UEPDATX = 1;
}
else
{
UEPDATX = 0;
}
Usb_set_TXRDY_bit();
while (!(Usb_send_data_complete()));
Usb_clear_TXCMPL_bit();
while (!(Usb_receive_out_data()));
Usb_clear_RXOUTB0_bit();
Usb_clear_DIR_bit();
}
/**************************************************************************
*
* Function Name:usb_set_configuration
*
* Descriptions:
*
* Arguments:
*
* Returns: None
*
**************************************************************************/
void usb_set_configuration (void)
{
UINT8 configuration_number;
configuration_number = UsbCtrlCmd.wValue&0x00ff;
Usb_clear_DIR_bit();
Usb_clr_rxsetup_bit();
Usb_set_TXRDY_bit(); /* send a ZLP for STATUS phase */
if (configuration_number == 0)
{
Usb_clear_CONFG();
}
else
{
Usb_set_CONFG();
}
while (!Usb_send_data_complete());
Usb_clear_TXCMPL_bit();
Usb_sel_ep(0x01); /* endpoints configuration */
UEPCONX = 0x86 ;
Usb_sel_ep(0x02);
UEPCONX = 0x82;
}
/**************************************************************************
*
* Function Name:usb_clear_feature
*
* Descriptions:
*
* Arguments:
*
* Returns: None
*
**************************************************************************/
void usb_clear_feature (void)
{
if (UsbCtrlCmd.bmRequestType == 0x00)
{
Usb_clr_rxsetup_bit();
Usb_set_STALLRQ_bit();
while (!(Usb_stall_sent_complete()));
Usb_clear_STALLRQ_bit();
}
if (UsbCtrlCmd.bmRequestType == 0x01)
{
Usb_clr_rxsetup_bit();
Usb_set_STALLRQ_bit();
while (!(Usb_stall_sent_complete()));
Usb_clear_STALLRQ_bit();
}
if (UsbCtrlCmd.bmRequestType == 0x02)
{
if ((UsbCtrlCmd.wValue&0xff) == 0x00)/*feature selector*/
{
switch ((UsbCtrlCmd.wIndex&0xff)&0x7f) /*endpoint selector*/
{
case 0x00:
{
Usb_clr_rxsetup_bit();
Usb_set_TXRDY_bit();
while (!(Usb_send_data_complete()));
Usb_clear_TXCMPL_bit();
break;
}
case 0x01:
{
Usb_sel_ep(1);
Usb_clear_STALLRQ_bit();
Usb_set_EP1RST();
Usb_clr_EP1RST();
ep_status[1] =0x00;
Usb_sel_ep(0);
Usb_clr_rxsetup_bit();
Usb_set_TXRDY_bit();
while (!(Usb_send_data_complete()));
Usb_clear_TXCMPL_bit();
break;
}
case 0x02:
{
Usb_sel_ep(2);
Usb_clear_STALLRQ_bit();
Usb_set_EP2RST();
Usb_clr_EP2RST();
ep_status[2] = 0x00;
Usb_sel_ep(0);
Usb_clr_rxsetup_bit();
Usb_set_TXRDY_bit();
while (!(Usb_send_data_complete()));
Usb_clear_TXCMPL_bit();
break;
}
default:
{
Usb_clr_rxsetup_bit();
Usb_set_STALLRQ_bit();
while (!(Usb_stall_sent_complete()));
Usb_clear_STALLRQ_bit();
break;
}
}
}
}
}
/**************************************************************************
*
* Function Name:usb_set_feature
*
* Descriptions:
*
* Arguments:
*
* Returns: None
*
**************************************************************************/
void usb_set_feature (void)
{
if (UsbCtrlCmd.bmRequestType == 0x00)
{
Usb_clr_rxsetup_bit();
Usb_set_STALLRQ_bit();
while (!(Usb_stall_sent_complete()));
Usb_clear_STALLRQ_bit();
}
if (UsbCtrlCmd.bmRequestType == 0x01)
{
Usb_clr_rxsetup_bit();
Usb_set_STALLRQ_bit();
while (!(Usb_stall_sent_complete()));
Usb_clear_STALLRQ_bit();
}
if (UsbCtrlCmd.bmRequestType == 0x02)
{
if ((UsbCtrlCmd.wValue&0xff) == 0x00)/*feature selector*/
{
switch (UsbCtrlCmd.wIndex & 0x7f) // check wIndex
{
case 0x01:
{
Usb_sel_ep(1);
Usb_set_STALLRQ_bit();
Usb_sel_ep(0);
ep_status[1] = 0x01;
Usb_clr_rxsetup_bit();
Usb_set_TXRDY_bit();
while (!(Usb_send_data_complete()));
Usb_clear_TXCMPL_bit();
break;
}
case 0x02:
{
Usb_sel_ep(2);
Usb_set_STALLRQ_bit();
Usb_sel_ep(0);
ep_status[2] = 0x01;
Usb_clr_rxsetup_bit();
Usb_set_TXRDY_bit();
while (!(Usb_send_data_complete()));
Usb_clear_TXCMPL_bit();
break;
}
default:
{
break;
}
}
}
}
}
/**************************************************************************
*
* Function Name:usb_get_status
*
* Descriptions:
*
* Arguments:
*
* Returns: None
*
**************************************************************************/
void usb_get_status (void)
{
UINT8 wIndex;
Usb_clr_rxsetup_bit();
Usb_set_DIR_bit();
switch(UsbCtrlCmd.bmRequestType)
{
case 0x80:
{
UEPDATX = 0x01;
break;
}
case 0x81:
{
UEPDATX = 0x00;
break;
}
case 0x82:
{
wIndex = UsbCtrlCmd.wIndex & 0x7f;
UEPDATX = ep_status[wIndex];
break;
}
}
UEPDATX = 0x00;
Usb_set_TXRDY_bit();
while ((!(Usb_send_data_complete())) || (Usb_setup_packet_receive()));
Usb_clear_TXCMPL_bit();
while ((!(Usb_receive_out_data())) || (Usb_setup_packet_receive()));
Usb_clear_DIR_bit();
Usb_clear_RXOUTB0_bit();
}
/**************************************************************************
*
* Function Name:hid_set_idle
*
* Descriptions:
*
* Arguments:
*
* Returns: None
*
**************************************************************************/
void hid_set_idle(void)
{
Usb_clear_DIR_bit();
Usb_clr_rxsetup_bit();
Usb_set_TXRDY_bit();
while (!(Usb_send_data_complete()));
Usb_clear_TXCMPL_bit();
}
/**************************************************************************
*
* Function Name:usb_get_max_lun
*
* Descriptions:
*
* Arguments:
*
* Returns: None
*
**************************************************************************/
void usb_get_max_lun(void)
{
Usb_clr_rxsetup_bit();
Usb_set_DIR_bit();
UEPDATX = 0x00;
Usb_set_TXRDY_bit();
while ((!(Usb_send_data_complete())) || (Usb_setup_packet_receive()));
Usb_clear_TXCMPL_bit();
while ((!(Usb_receive_out_data())) || (Usb_setup_packet_receive()));
Usb_clear_DIR_bit();
Usb_clear_RXOUTB0_bit();
}⌨️ 快捷键说明
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