cdc_usb_config.c

USB 通信,使用的是Freescale公司的CMX协议栈

#include "usb.h"
#include "uart.h"

#define USB_VENDOR_ID   0x0425u
#define USB_PRODUCT_ID  0x050eu
#define USB_DEVICE_REL_NUM  0x0003
 
hcc_u8 string_descriptor0[4] = {4, 0x3, 0x09, 0x04 };
hcc_u8 str_manufacturer[26] = { 
                                26, 0x3, 'C',0, 'M',0, 'X',0, 
                                ' ',0, 'S',0, 'y',0, 's',0, 
                                't',0, 'e',0, 'm',0, 's',0, 
                                ' ',0
                              };
hcc_u8 str_config[44] = { 
                          44, 0x3, 'D',0, 'e',0, 'f',0, 
                          'a',0, 'u',0, 'l',0, 't',0, 
                          ' ',0, 'c',0, 'o',0, 'n',0, 
                          'f',0, 'i',0, 'g',0, 'u',0, 
                          'r',0, 'a',0, 't',0, 'i',0, 
                          'o',0, 'n',0
                        };
                        
hcc_u8 str_interface[8] = { 
                             8, 0x3, 'C',0, 'D',0, 'C',0 
                           };

hcc_u8 str_serail_number[10] = { 
                                 10, 0x3, 'V',0, '0',0, '.',0, 
                                 '1',0
                               };

hcc_u8 str_product[18] = { 
	                       18,0x03,'C',0,'T',0,'P',0,
	                       ' ',0,'S',0,'U',0,'D',0,
	                       'A',0
	                     };

hcc_u8 * const usb_string_descriptors[USB_NO_OF_STRING_DESC] = {
    string_descriptor0, 
    str_manufacturer, 
    str_product, 
    str_serail_number, 
    str_config, 
    str_interface
};

hcc_u8 usb_device_descriptor[] = {
  USB_FILL_DEV_DESC(0x0200, 0, 0, 0, EP0_PACKET_SIZE, USB_VENDOR_ID, USB_PRODUCT_ID
      , USB_DEVICE_REL_NUM, 1, 2, 3, 1)
};

#define USB_FILL_HDR_FUNCT_DESCR(cdc_ver)\
  0x5, 0x24, 0x0, (hcc_u8)(cdc_ver), (hcc_u8)((cdc_ver)>>8)

#define USB_FILL_CALL_MGM_FUNCT_DESCR(capability, dataifc)\
  0x5, 0x24, 0x1, (hcc_u8)(capability), (hcc_u8)(dataifc)

#define USB_FILL_ACM_FUNCT_DESCR(capability)\
  0x4, 0x24, 0x2, (hcc_u8)(capability)

#define USB_FILL_UNION_FUNCT_DESCR(master_ifc, no_of_slaves)\
  0x4+(no_of_slaves), 0x24, 0x6, (hcc_u8)(master_ifc)

hcc_u8 usb_config_descriptor[] = {
  USB_FILL_CFG_DESC(9+9+7+7, 1, 1, 4, CFGD_ATTR_BUS_PWR, 0x32),
  USB_FILL_IFC_DESC(0, 0, 2, 0xff, 0x02, 0xFF, 5), 
  USB_FILL_EP_DESC(0x2, EPD_DIR_TX, EPD_ATTR_BULK, EP2_PACKET_SIZE, 0x0),
  USB_FILL_EP_DESC(0x3, EPD_DIR_RX, EPD_ATTR_BULK, EP3_PACKET_SIZE, 0x0),
};

void *get_device_descriptor(void)
{
  return(usb_device_descriptor);
}

hcc_u8 is_cfgd_index(hcc_u16 cndx)
{
  return((hcc_u8)(cndx == 1 ? 1 : 0));
}

void *get_cfg_descriptor(hcc_u8 cndx)
{
  return(cndx ? usb_config_descriptor : usb_config_descriptor);
}

hcc_u8 is_str_index(hcc_u8 sndx)
{
  return((hcc_u8)(sndx < (sizeof(usb_string_descriptors)/sizeof(usb_string_descriptors[0]))? 1 : 0));
}

void *get_str_descriptor(hcc_u8 sndx)
{
  return(usb_string_descriptors[sndx]);
}


hcc_u8 is_ifc_ndx(hcc_u8 c, hcc_u8 i, hcc_u8 is)
{
  if (c==1 &&  is == 0)
  {
    if (i==0 || i==1)
    {
      return(1);
    }
  }
  return(0);
}

hcc_u8 is_ep_ndx(hcc_u8 c, hcc_u8 i, hcc_u8 is, hcc_u8 ep)
{
  if (c==1 && is==0)
  {
    if (i==0 && ep < 1)
    {
      return(1);
    }
    if (i==1 && ep < 2)
    {
      return(1);
    }
  }
  return(0);
}

void * get_ep_descriptor(hcc_u8 c, hcc_u8 i, hcc_u8 is, hcc_u8 ep)
{
  hcc_u8 a;
    a = i;
    if (ep==0)
    {
      return(&usb_config_descriptor[9+9]);
    }
    else
    {
      return(&usb_config_descriptor[9+9+7]);
    }
    
  return((void *)(c + is ? 0 : 0));
}


hcc_u8 buf_ep00[EP0_PACKET_SIZE];
hcc_u8 buf_ep01[EP0_PACKET_SIZE];
hcc_u8 buf_ep20[EP2_PACKET_SIZE];
hcc_u8 buf_ep21[EP2_PACKET_SIZE];
hcc_u8 buf_ep30[EP3_PACKET_SIZE];
hcc_u8 buf_ep31[EP3_PACKET_SIZE];

void *get_ep_rx_buffer(hcc_u8 ep, hcc_u8 buf)
{
  switch(ep)
  {
  case 0:
    if (!buf)
    {
      return(buf_ep00);
    }
    else
    {
      return(buf_ep01);    
    }
    break;
  case 2:
    if (!buf)
    {
      return(buf_ep20);
    }
    else
    {
      return(buf_ep21);    
    }
    break;
  case 3:
    if (!buf)
    {
      return(buf_ep30);
    }
    else
    {
      return(buf_ep31);    
    }
    break;    
  }
  return(0);
}
/****************************** END OF FILE **********************************/