📄 usbhw.lst
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292 1 }
293
294
295 /*
296 * Reset USB Endpoint
297 * Parameters: EPNum: Endpoint Number
298 * EPNum.0..3: Address
299 * EPNum.7: Dir
300 * Return Value: None
301 */
302
303 void USB_ResetEP (BYTE EPNum) {
304 1 WrCmdDat(CMD_SET_EP_STAT(EPAdr(EPNum)), DAT_WR_BYTE(0));
305 1 }
306
307
308 /*
309 * Set Stall for USB Endpoint
310 * Parameters: EPNum: Endpoint Number
311 * EPNum.0..3: Address
312 * EPNum.7: Dir
313 * Return Value: None
314 */
315
316 void USB_SetStallEP (BYTE EPNum) {
317 1 WrCmdDat(CMD_SET_EP_STAT(EPAdr(EPNum)), DAT_WR_BYTE(EP_STAT_ST));
318 1 }
319
320
321 /*
322 * Clear Stall for USB Endpoint
ARM COMPILER V2.50a, usbhw 14/02/06 09:59:06 PAGE 6
323 * Parameters: EPNum: Endpoint Number
324 * EPNum.0..3: Address
325 * EPNum.7: Dir
326 * Return Value: None
327 */
328
329 void USB_ClrStallEP (BYTE EPNum) {
330 1 WrCmdDat(CMD_SET_EP_STAT(EPAdr(EPNum)), DAT_WR_BYTE(0));
331 1 }
332
333
334 /*
335 * Read USB Endpoint Data
336 * Parameters: EPNum: Endpoint Number
337 * EPNum.0..3: Address
338 * EPNum.7: Dir
339 * pData: Pointer to Data Buffer
340 * Return Value: Number of bytes read
341 */
342
343 DWORD USB_ReadEP (BYTE EPNum, BYTE *pData) {
344 1 DWORD cnt, n;
345 1
346 1 USB_CTRL = ((EPNum & 0x0F) << 2) | CTRL_RD_EN;
347 1
348 1 do {
349 2 cnt = RX_PLENGTH;
350 2 } while ((cnt & PKT_RDY) == 0);
351 1 cnt &= PKT_LNGTH_MASK;
352 1
353 1 for (n = 0; n < (cnt + 3) / 4; n++) {
354 2 *((__packed DWORD *)pData) = RX_DATA;
355 2 pData += 4;
356 2 }
357 1
358 1 USB_CTRL = 0;
359 1
360 1 WrCmd(CMD_SEL_EP(EPAdr(EPNum)));
361 1 WrCmd(CMD_CLR_BUF);
362 1
363 1 return (cnt);
364 1 }
365
366
367 /*
368 * Write USB Endpoint Data
369 * Parameters: EPNum: Endpoint Number
370 * EPNum.0..3: Address
371 * EPNum.7: Dir
372 * pData: Pointer to Data Buffer
373 * cnt: Number of bytes to write
374 * Return Value: Number of bytes written
375 */
376
377 DWORD USB_WriteEP (BYTE EPNum, BYTE *pData, DWORD cnt) {
378 1 DWORD n;
379 1
380 1 USB_CTRL = ((EPNum & 0x0F) << 2) | CTRL_WR_EN;
381 1
382 1 TX_PLENGTH = cnt;
383 1
384 1 for (n = 0; n < (cnt + 3) / 4; n++) {
385 2 TX_DATA = *((__packed DWORD *)pData);
386 2 pData += 4;
387 2 }
388 1
ARM COMPILER V2.50a, usbhw 14/02/06 09:59:06 PAGE 7
389 1 USB_CTRL = 0;
390 1
391 1 WrCmd(CMD_SEL_EP(EPAdr(EPNum)));
392 1 WrCmd(CMD_VALID_BUF);
393 1
394 1 return (cnt);
395 1 }
396
397
398 /*
399 * USB Interrupt Service Routine
400 */
401
402 void USB_ISR (void) __irq {
403 1 DWORD disr, eisr, val, n, m;
404 1
405 1 disr = DEV_INT_STAT; /* Device Interrupt Status */
406 1
407 1 // Device Status Interrupt (Reset, Suspend/Resume, Connect change)
408 1 if (disr & DEV_STAT_INT) {
409 2 WrCmd(CMD_GET_DEV_STAT);
410 2 val = RdCmdDat(DAT_GET_DEV_STAT); /* Device Status */
411 2 if (val & DEV_RST) { /* Reset */
412 3 USB_Reset();
413 3 #if USB_RESET_EVENT
414 3 USB_Reset_Event();
415 3 #endif
416 3 goto isr_end;
417 3 }
418 2 if (val & DEV_SUS_CH) { /* Suspend/Resume */
419 3 if (val & DEV_SUS) { /* Suspend */
420 4 USB_Suspend();
421 4 #if USB_SUSPEND_EVENT
USB_Suspend_Event();
#endif
424 4 } else { /* Resume */
425 4 USB_Resume();
426 4 #if USB_RESUME_EVENT
USB_Resume_Event();
#endif
429 4 }
430 3 goto isr_end;
431 3 }
432 2 if (val & DEV_CON_CH) { /* Connect change */
433 3 #if USB_POWER_EVENT
USB_Power_Event(val & DEV_CON);
#endif
436 3 goto isr_end;
437 3 }
438 2 }
439 1
440 1 #if USB_SOF_EVENT
// Start of Frame Interrupt
if (disr & FRAME_INT) {
WrCmd(CMD_RD_FRAME);
val = RdCmdDat(DAT_RD_FRAME);
val = val | (RdCmdDat(DAT_RD_FRAME) << 8);
USB_SOF_Event(val);
}
#endif
449 1
450 1 #if USB_ERROR_EVENT
// Error Interrupt
if (disr & ERR_INT) {
WrCmd(CMD_RD_ERR_STAT);
val = RdCmdDat(DAT_RD_ERR_STAT);
ARM COMPILER V2.50a, usbhw 14/02/06 09:59:06 PAGE 8
if (val & 0x01) {
val = USB_ERR_PID;
} else if (val & 0x02) {
val = 0x100; // Unexpected Error
} else if (val & 0x04) {
val = USB_ERR_CRC;
} else if (val & 0x08) {
val = USB_ERR_TIMEOUT;
} else if (val & 0x10) {
val = USB_ERR_EOP;
} else if (val & 0x20) {
val = 0x101; // Buffer Overrun
} else if (val & 0x40) {
val = USB_ERR_BIT_STUFF;
} else if (val & 0x80) {
val = USB_ERR_DATA_TOGGLE;
}
USB_Error_Event(val);
}
#endif
475 1
476 1 // Ednpoint's Slow Interrupt
477 1 if (disr & EP_SLOW_INT) {
478 2
479 2 while ( eisr = EP_INT_STAT ) { /* Endpoint Interrupt Status */
480 3 // Check All Endpoints
481 3 for (n = 0; n < USB_EP_NUM; n++) {
482 4 if (eisr & (1 << n)) {
483 5 m = n >> 1;
484 5
485 5 EP_INT_CLR = 1 << n;
486 5 while ((DEV_INT_STAT & CDFULL_INT) == 0);
487 5 val = CMD_DATA;
488 5 DEV_INT_CLR = CDFULL_INT;
489 5
490 5 if ((n & 1) == 0) {
491 6 // OUT Endpoint
492 6 if (n == 0) { /* Control OUT Endpoint */
493 7 if (val & EP_SEL_STP) { /* Setup Packet */
494 8 if (USB_P_EP[0]) {
495 9 USB_P_EP[0](USB_EVT_SETUP);
496 9 continue;
497 9 }
498 8 }
499 7 }
500 6 if (USB_P_EP[m]) {
501 7 USB_P_EP[m](USB_EVT_OUT);
502 7 }
503 6 } else {
504 6 // IN Endpoint
505 6 if (USB_P_EP[m]) {
506 7 USB_P_EP[m](USB_EVT_IN);
507 7 }
508 6 }
509 5 }
510 4 }
511 3 }
512 2 }
513 1
514 1 isr_end:
515 1 DEV_INT_CLR = disr;
516 1 VICVectAddr = 0; /* Acknowledge Interrupt */
517 1 }
ARM COMPILER V2.50a, usbhw 14/02/06 09:59:06 PAGE 9
ASSEMBLY LISTING OF GENERATED OBJECT CODE
*** EXTERNALS:
EXTERN DATA (USB_DeviceStatus)
EXTERN CODE16 (USB_Reset_Event?T)
EXTERN DATA (USB_P_EP)
EXTERN CODE32 (USB_Reset_Event?A)
*** PUBLICS:
PUBLIC USB_Init?T
PUBLIC USB_Connect?T
PUBLIC USB_Reset?T
PUBLIC USB_Reset?A
PUBLIC USB_Suspend?T
PUBLIC USB_Suspend?A
PUBLIC USB_Resume?T
PUBLIC USB_Resume?A
PUBLIC USB_WakeUp?T
PUBLIC USB_WakeUpCfg?T
PUBLIC USB_SetAddress?T
PUBLIC USB_Configure?T
PUBLIC USB_ConfigEP?T
PUBLIC USB_DirCtrlEP?T
PUBLIC USB_EnableEP?T
PUBLIC USB_DisableEP?T
PUBLIC USB_ResetEP?T
PUBLIC USB_SetStallEP?T
PUBLIC USB_ClrStallEP?T
PUBLIC USB_ReadEP?T
PUBLIC USB_WriteEP?T
PUBLIC USB_ISR?A
PUBLIC EPAdr?T
PUBLIC WrCmd?T
PUBLIC WrCmd?A
PUBLIC WrCmdDat?T
PUBLIC RdCmdDat?T
PUBLIC RdCmdDat?A
*** CODE SEGMENT '?PR?EPAdr?T?usbhw':
38: DWORD EPAdr (DWORD EPNum) {
00000000 1C03 MOV R3,R0 ; EPNum
00000002 ---- Variable 'EPNum' assigned to Register 'R3' ----
00000002 ; SCOPE-START
41: val = (EPNum & 0x0F) << 1;
00000002 1C19 MOV R1,R3 ; EPNum
00000004 200F MOV R0,#0xF
00000006 4001 AND R1,R0
00000008 0049 LSL R1,R1,#0x1
0000000A ---- Variable 'val' assigned to Register 'R1' ----
42: if (EPNum & 0x80) {
0000000A 1C18 MOV R0,R3 ; EPNum
0000000C 2280 MOV R2,#0x80
0000000E 4210 TST R0,R2 ; EPNum
00000010 D000 BEQ L_1 ; T=0x00000014
43: val += 1;
00000012 3101 ADD R1,#0x1
44: }
00000014 L_1:
45: return (val);
00000014 1C08 MOV R0,R1 ; val
00000016 ; SCOPE-END
46: }
00000016 4770 BX R14
00000018 ENDP ; 'EPAdr?T'
*** CODE SEGMENT '?PR?WrCmd?T?usbhw':
ARM COMPILER V2.50a, usbhw 14/02/06 09:59:06 PAGE 10
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