📄 chap_9.lst
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211 1 //读取请求号
212 1 USB_Device_Request.bRequest = D14_Cntrl_Reg.D14_DATA_PORT_LSB;
213 1 //读取16bit请求数据
214 1 USB_Device_Request.wValue = D14_Cntrl_Reg.D14_DATA_PORT_LSB;
215 1 USB_Device_Request.wValue <<= 8;
216 1 USB_Device_Request.wValue |= D14_Cntrl_Reg.D14_DATA_PORT_LSB;
217 1 //读取16bit请求索引
218 1 USB_Device_Request.wIndex = D14_Cntrl_Reg.D14_DATA_PORT_LSB;
219 1 USB_Device_Request.wIndex <<= 8;
220 1 USB_Device_Request.wIndex |= D14_Cntrl_Reg.D14_DATA_PORT_LSB;
221 1 //读取16bit长度
222 1 USB_Device_Request.wLength = D14_Cntrl_Reg.D14_DATA_PORT_LSB;
223 1 USB_Device_Request.wLength <<= 8;
224 1 USB_Device_Request.wLength |= D14_Cntrl_Reg.D14_DATA_PORT_LSB;
225 1
226 1 //长度处理(高低8位对调)
227 1 Temp = USB_Device_Request.wLength;
228 1 USB_Device_Request.wLength = 0;
229 1 USB_Device_Request.wLength = (UC) Temp;
230 1 USB_Device_Request.wLength <<= 8;
231 1 Temp >>= 8;
232 1 USB_Device_Request.wLength |= Temp;
233 1
234 1 type = USB_Device_Request.bmRequestType & 0x60;
235 1 req = USB_Device_Request.bRequest & 0x0f;
236 1
237 1 //厂商请求
238 1 if (type == 0x40)
239 1 {
240 2 Vendor_Specific_Command();//厂商请求处理
C51 COMPILER V7.50 CHAP_9 10/30/2007 16:17:28 PAGE 5
241 2 }
242 1 else if (type == 0x00)
243 1 (*StandardDeviceRequest[req])();//调用标准请求
244 1 }
245
246
247 //厂商请求处理
248 void Vendor_Specific_Command(void)
249 {
250 1 if(USB_Device_Request.bRequest == 0x0C)
251 1 {
252 2 switch (USB_Device_Request.wIndex)
253 2 {
254 3 case GET_FIRMWARE_VERSION ://获取固件版本
255 3 if(USB_Device_Request.wLength == 1)
256 3 {
257 4 //选择端点1
258 4 D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
259 4 //设置数据长度为1B
260 4 D14_Cntrl_Reg.D14_BUFFER_LENGTH_LSB = 1;
261 4 D14_Cntrl_Reg.D14_BUFFER_LENGTH_MSB = 0;
262 4 //发送0x21版本号
263 4 D14_Cntrl_Reg.D14_DATA_PORT_LSB = 0x21;//版本号
264 4 wait_ep0tx();
265 4 ep0out_ack();
266 4 break;
267 4 }
268 3
269 3 case SETUP_DMA_REQUEST :
270 3 //回复请求
271 3 wait_ep0rx();
272 3 D14_Cntrl_Reg.D14_ENDPT_INDEX = 0;
273 3 //
274 3 FileSize.Size.Address[0] = D14_Cntrl_Reg.D14_DATA_PORT_LSB;
275 3 FileSize.Size.Address[1] = D14_Cntrl_Reg.D14_DATA_PORT_LSB;
276 3 FileSize.Size.Address[2] = D14_Cntrl_Reg.D14_DATA_PORT_LSB;
277 3 //读取传输字节数
278 3 Temp = D14_Cntrl_Reg.D14_DATA_PORT_LSB;
279 3 bytecount = D14_Cntrl_Reg.D14_DATA_PORT_LSB;
280 3 bytecount <<= 8;
281 3 bytecount |= Temp;
282 3 //读取传输方式
283 3 FileSize.Size.DIR = D14_Cntrl_Reg.D14_DATA_PORT_LSB;
284 3 ep0in_ack();
285 3 Kernel_Flag.BITS.Transfer_Start = 1;//标志传输数据开始
286 3 break;
287 3
288 3 default :
289 3 if(USB_Device_Request.bmRequestType == 0xC0)
290 3 {
291 4 ep0in_ack();
292 4 break;
293 4 }
294 3 if(USB_Device_Request.bmRequestType == 0x40)
295 3 {
296 4 D14_Cntrl_Reg.D14_ENDPT_INDEX = 0;
297 4 D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STALL = 1;
298 4 while(!USB_Int_Flag.BITS.EP0SETUP)
299 4 {
300 5 //读取ISP1581中断寄存器
301 5 USB_Int_Flag.VALUE |= D14_Cntrl_Reg.D14_INT.VALUE;
302 5 //回写ISP1581中断寄存器
C51 COMPILER V7.50 CHAP_9 10/30/2007 16:17:28 PAGE 6
303 5 D14_Cntrl_Reg.D14_INT.VALUE = USB_Int_Flag.VALUE;
304 5 if(USB_Int_Flag.BITS.SUSP || USB_Int_Flag.BITS.RESET)
305 5 return;
306 5 }
307 4 USB_Int_Flag.BITS.EP0TX = 0;
308 4 break;
309 4 }
310 3 }
311 2 }
312 1 }
313
314
315
316 //保留函数
317 void reserved(void)
318 {
319 1
320 1 }
321
322
323 //Get_Descriptor()获取描述符
324 void get_descriptor(void)
325 {
326 1
327 1 switch(USB_Device_Request.wValue)
328 1 {
329 2 case 1://设备描述符
330 2 //选择描述符
331 2 if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
332 2 Descriptor_Ptr = &Standard_Device_Descriptor[0]; //set pointer to device descriptor
333 2 if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
334 2 Descriptor_Ptr = &HS_Device_Descriptor[0]; //set pointer to device descriptor
335 2 count = *Descriptor_Ptr; //read in descriptor length
336 2 //选择端点号
337 2 D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
338 2 //写下发送字节数
339 2 D14_Cntrl_Reg.D14_BUFFER_LENGTH_LSB = 0x12;
340 2 D14_Cntrl_Reg.D14_BUFFER_LENGTH_MSB = 0;
341 2 //send descriptor
342 2 //发送描述符
343 2 while(count != 0)
344 2 {
345 3 D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
346 3 count--;
347 3 Descriptor_Ptr++;
348 3 }
349 2 wait_ep0tx();
350 2 ep0out_ack();
351 2 break;
352 2
353 2 case 2 : //获取配置描述符
354 2 USB_Int_Flag.BITS.EP0RX = 0;
355 2 Temp = 64;
356 2 Descriptor_Ptr = &Standard_Config_Descriptor[0]; //set pointer to configuration descriptor
357 2 count = *Descriptor_Ptr; //get configuration Descriptor length
358 2 //选择端点号1
359 2 D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
360 2 //check if only configuration descriptor required
361 2 //检查描述符长度,决定是只发送配置描述符还是描述符集合
362 2 if(count >= USB_Device_Request.wLength) //Send only Configuration descriptor
363 2 {
364 3 //写入发送字节数
C51 COMPILER V7.50 CHAP_9 10/30/2007 16:17:28 PAGE 7
365 3 D14_Cntrl_Reg.D14_BUFFER_LENGTH_LSB = (UC) USB_Device_Request.wLength;
366 3 D14_Cntrl_Reg.D14_BUFFER_LENGTH_MSB = (UC) (USB_Device_Request.wLength >> 8);
367 3 //send descriptor
368 3 //发送描述符
369 3 for(count = 0 ; count < USB_Device_Request.wLength ; count++)
370 3 {
371 4 D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
372 4 Descriptor_Ptr++;
373 4 }
374 3 wait_ep0tx();
375 3 ep0out_ack();
376 3 }
377 2 else //send Configuration,Interface and Endpoint descriptor
378 2 {
379 3 //发送描述符集合(配置+接口+端点)
380 3 if(USB_Device_Request.wLength >= 32)
381 3 {
382 4 //写入配置描述符
383 4 while(count != 0)
384 4 {
385 5 D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
386 5 count--;
387 5 Descriptor_Ptr++;
388 5 }
389 4 //选择高速还是全速接口描述符
390 4 if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
391 4 Descriptor_Ptr = &Bulk_Interface_Descriptor[0]; //set pointer to interface descriptor
392 4 if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
393 4 Descriptor_Ptr = &HS_Bulk_Interface_Descriptor[0]; //set pointer to interface descriptor
394 4 count = *Descriptor_Ptr; //get the descriptor count
395 4 //写入接口描述符
396 4 while(count != 0)
397 4 {
398 5 D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
399 5 count--;
400 5 Descriptor_Ptr++;
401 5 }
402 4 //选择高速还是全速端点1IN描述符
403 4 if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
404 4 Descriptor_Ptr = &Int_In_Descriptor[0]; //set pointer to interface descriptor
405 4 if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
406 4 Descriptor_Ptr = &HS_Int_In_Descriptor[0]; //set pointer to interface descriptor
407 4 count = *Descriptor_Ptr; //read in descriptor length
408 4 //写入端点1IN描述符
409 4 while(count != 0)
410 4 {
411 5 D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
412 5 count--;
413 5 Descriptor_Ptr++;
414 5 }
415 4 //选择高速还是全速端点1OUT描述符
416 4 if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
417 4 Descriptor_Ptr = &Int_Out_Descriptor[0]; //set pointer to interface descriptor
418 4 if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
419 4 Descriptor_Ptr = &HS_Int_Out_Descriptor[0]; //set pointer to interface descriptor
420 4 count = *Descriptor_Ptr; //read in descriptor length
421 4 //写入端点1OUT描述符
422 4 while(count != 0)
423 4 {
424 5 D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
425 5 count--;
426 5 Descriptor_Ptr++;
C51 COMPILER V7.50 CHAP_9 10/30/2007 16:17:28 PAGE 8
427 5 }
428 4 //选择高速还是全速端点2IN描述符
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