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// this file implements some function to access image device
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// this file implements some function to access image device
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#include <usb.h>
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#include <usb.h>
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#include <stdio.h>
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#include <stdio.h>
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#include "misc.h"
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#include "misc.h"
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#define IMG_DEV_VID 0x0547
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#define IMG_DEV_VID 0x0547
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#define IMG_DEV_PID 0x1002
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#define IMG_DEV_PID 0x1002
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//#define IMG_DEV_VID 0x0a82
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//#define IMG_DEV_VID 0x0a82
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//#define IMG_DEV_PID 0x0603
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//#define IMG_DEV_PID 0x0603
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static usb_dev_handle* img_dev_handle=NULL;
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static usb_dev_handle* img_dev_handle=NULL;
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int img_dev_open()
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int img_dev_open()
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{
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{
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struct usb_bus *bus;
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struct usb_bus *bus;
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if(img_dev_handle)
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if(img_dev_handle)
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return -1;
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return -1;
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usb_set_debug(14);
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usb_set_debug(14);
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usb_init();
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usb_init();
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usb_find_busses();
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usb_find_busses();
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usb_find_devices();
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usb_find_devices();
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for (bus = usb_get_busses(); bus; bus = bus->next)
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for (bus = usb_get_busses(); bus; bus = bus->next)
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{
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{
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struct usb_device *dev;
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struct usb_device *dev;
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for (dev = bus->devices; dev; dev = dev->next)
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for (dev = bus->devices; dev; dev = dev->next)
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{
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{
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if( dev->descriptor.idVendor == IMG_DEV_VID
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if( dev->descriptor.idVendor == IMG_DEV_VID
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&& dev->descriptor.idProduct == IMG_DEV_PID )
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&& dev->descriptor.idProduct == IMG_DEV_PID )
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{
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{
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img_dev_handle = usb_open(dev);
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img_dev_handle = usb_open(dev);
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usb_set_configuration ( img_dev_handle, 1);
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usb_set_configuration ( img_dev_handle, 1);
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usb_claim_interface ( img_dev_handle, 0);
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usb_claim_interface ( img_dev_handle, 0);
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usb_set_altinterface ( img_dev_handle, 0);
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usb_set_altinterface ( img_dev_handle, 0);
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return 0;
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return 0;
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}
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}
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}
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}
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}
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}
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return -1;
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return -1;
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}
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}
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void img_dev_close()
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void img_dev_close()
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{
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{
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if(img_dev_handle)
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if(img_dev_handle)
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{
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{
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usb_close(img_dev_handle);
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usb_close(img_dev_handle);
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img_dev_handle=NULL;
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img_dev_handle=NULL;
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}
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}
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}
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}
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int img_read_img(unsigned char* buf, int len)
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int img_read_img(unsigned char* buf, int len)
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{
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{
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int i;
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int i;
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if(!img_dev_handle)
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if(!img_dev_handle)
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return -2;
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return -2;
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i=usb_bulk_read(img_dev_handle, 0x82, (char*)buf, len, 200);
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i=usb_bulk_read(img_dev_handle, 0x82, (char*)buf, len, 200);
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if(i!=len)
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if(i!=len)
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DEBUG_LINE("read data error");
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DEBUG_LINE("read data error");
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return i;
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return i;
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}
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}
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int img_write_data(unsigned char* buf, int len,int addr)
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int img_write_data(unsigned char* buf, int len,int addr)
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{
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{
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int i;
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int i;
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if(!img_dev_handle)
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if(!img_dev_handle)
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return -2;
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return -2;
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if(addr != 0x08 && addr != 0x6 )
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if(addr != 0x08 && addr != 0x6 )
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return -3;
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return -3;
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i=usb_bulk_write(img_dev_handle, addr, (char*)buf, len, 500);
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i=usb_bulk_write(img_dev_handle, addr, (char*)buf, len, 500);
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if(i!=len)
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if(i!=len)
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{
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DEBUG_LINE("write data have some error i= %d",i);
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DEBUG_LINE("write data have some error i= %d",i);
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return -1;
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}
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return i;
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return i;
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}
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}
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