?? lcp.lst
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=1 186 ; LJMP EP7In_ISR
=1 187 ; DB 0
=1 188 ; LJMP EP7Out_ISR
=1 189 ; End of Interrupt Vector tables
A51 MACRO ASSEMBLER LCP 25/07/99 18:37:13 PAGE 4
=1 190
=1 191 ; When a feature is used insert the required interrupt processing here
=1 192 ; The example use only used Endpoints 0 and 1 and also SOF for timing
0118 =1 193 Reserved:
0118 =1 194 INT0_ISR:
0118 =1 195 INT1_ISR:
0118 =1 196 Timer1_ISR:
0118 =1 197 UART0_ISR:
0118 =1 198 Timer2_ISR:
0118 =1 199 UART1_ISR:
0118 =1 200 I2C_ISR:
0118 =1 201 INT4_ISR:
0118 =1 202 INT5_ISR:
0118 =1 203 INT6_ISR:
0118 =1 204 SOF_ISR:
0118 =1 205 SUTOK_ISR:
0118 =1 206 EP0In_ISR:
0118 =1 207 EP0Out_ISR:
0118 =1 208 EP1In_ISR:
0118 =1 209 EP1Out_ISR:
0118 =1 210 EP2In_ISR:
0118 =1 211 EP2Out_ISR:
0118 =1 212 EP3In_ISR:
0118 =1 213 EP3Out_ISR:
0118 =1 214 EP4In_ISR:
0118 =1 215 EP4Out_ISR:
0118 =1 216 EP5In_ISR:
0118 =1 217 EP5Out_ISR:
0118 =1 218 EP6In_ISR:
0118 =1 219 EP6Out_ISR:
0118 =1 220 EP7In_ISR :
0118 =1 221 EP7Out_ISR:
0118 =1 222 Not_Used: ; Should not get any of these
0118 32 =1 223 RETI
=1 224
0119 =1 225 ClearINT2: ; Tell the hardware that we're done
0119 E591 =1 226 MOV A, EXIF
011B C2E4 =1 227 CLR ACC.4 ; Clear the Interrupt 2 bit
011D F591 =1 228 MOV EXIF, A
011F 22 =1 229 RET
=1 230
0120 =1 231 USBReset_ISR: ; Bus has been Reset, move to DEFAULT state
0120 C0E0 =1 232 PUSH ACC
0122 C200 =1 233 CLR Configured
0124 3119 =1 234 CALL ClearINT2
=1 235 ; No need to clear source of interrupt
0126 D0E0 =1 236 POP ACC
0128 32 =1 237 RETI
=1 238
0129 =1 239 Suspend_ISR: ; SIE detected an Idle bus
0129 C0E0 =1 240 PUSH ACC
012B E587 =1 241 MOV A, PCON
012D 4401 =1 242 ORL A, #1
012F F587 =1 243 MOV PCON, A ; Go to sleep!
0131 00 =1 244 NOP
0132 00 =1 245 NOP ; Wake up here due to a USBResume
0133 00 =1 246 NOP
0134 3119 =1 247 CALL ClearINT2
0136 D0E0 =1 248 POP ACC
0138 32 =1 249 RETI
=1 250
0139 =1 251 WakeUp_ISR: ; Not using external WAKEUP in these examples
=1 252 ; So this must be due to a USBResume
0139 C2DC =1 253 CLR EICON.4 ; Clear the wakeup interrupt source
013B 32 =1 254 RETI
=1 255
A51 MACRO ASSEMBLER LCP 25/07/99 18:37:13 PAGE 5
013C =1 256 SUDAV_ISR: ; A Setup packet has been received
013C C0D0 =1 257 PUSH PSW ; Save Registers before the service routine
013E C0E0 =1 258 PUSH ACC
0140 C082 =1 259 PUSH DPL
0142 C083 =1 260 PUSH DPH
0144 120165 =1 261 CALL ServiceSetupPacket
0147 3119 =1 262 CALL ClearINT2
=1 263 ; Clear the source of the interrupt
0149 7401 =1 264 MOV A, #00000001b
014B 907FAB =1 265 MOV DPTR, #USBIRQ
014E F0 =1 266 MOVX @DPTR, A
014F D083 =1 267 ExitISR:POP DPH ; Restore Registers
0151 D082 =1 268 POP DPL
0153 D0E0 =1 269 POP ACC
0155 D0D0 =1 270 POP PSW
0157 32 =1 271 RETI
=1 272
0158 =1 273 Timer0_ISR:
0158 C0D0 =1 274 PUSH PSW ; Save Registers before the service routine
015A C0E0 =1 275 PUSH ACC
015C C082 =1 276 PUSH DPL
015E C083 =1 277 PUSH DPH
0160 1203CA =1 278 CALL ServiceTimerRoutine
=1 279 ; Source of the interrupt claered automatically
0163 80EA =1 280 JMP ExitISR
=1 281
282 $INCLUDE(../USB_INT.A51)
=1 283 ; This module is common to all of the examples.
=1 284 ; It services USB Requests from the SIE.
=1 285 ; Interpretation of the Output Reports is handled by MAIN
=1 286 ;
---- =1 287 CSEG
0165 =1 288 ServiceSetupPacket:
0165 907FE8 =1 289 MOV DPTR, #SETUPDAT ; Point to Setup Packet data
0168 E0 =1 290 MOVX A, @DPTR ; Get the RequestType
0169 A2E7 =1 291 MOV C, ACC.7 ; Bit 7 = 1 means IO device needs to send data to P
C Host
016B 9202 =1 292 MOV SendData, C
016D 545C =1 293 ANL A, #01011100b ; IF RequestType[6.4.3.2] = 1 THEN goto BadRequest
016F 7051 =1 294 JNZ BadRequest
0171 E0 =1 295 MOVX A, @DPTR ; IF RequestType[1&0] = 1 THEN goto BadRequest
0172 A2E0 =1 296 MOV C, ACC.0
0174 82E1 =1 297 ANL C, ACC.1
0176 404A =1 298 JC BadRequest
0178 30E502 =1 299 JNB ACC.5, NotB5 ; IF RequestType[5] = 1 THEN RequestType[1,0] = [1,
1]
017B 7403 =1 300 MOV A, #00000011b
017D 5403 =1 301 NotB5: ANL A, #00000011b ; Set CommandIndex[5,4] = RequestType[1,0]
017F C4 =1 302 SWAP A
0180 F540 =1 303 MOV Temp, A ; Save HI nibble of CommandIndex
=1 304 ; Set CommandIndex[3,0] = Request[3,0]
0182 A3 =1 305 INC DPTR ; Point to Request
0183 E0 =1 306 MOVX A, @DPTR
0184 540F =1 307 ANL A, #00001111b ; Only 13 are defined today, handle in table
0186 4540 =1 308 ORL A, Temp
0188 1201D1 =1 309 CALL CorrectSubroutine ; goto CommandTable(CommandIndex)
=1 310 ; Returns STALL=1 if a stall is required
018B 200134 =1 311 JB STALL, BadRequest
018E 300218 =1 312 JNB SendData, HandShake
0191 200320 =1 313 JB IsDescriptor, LoadSUDPTR; EZ-USB has a short cut for descriptors
=1 314 ; Send data in ReplyBuffer
0194 907F02 =1 315 MOV DPTR, #EP0InBuffer+2
0197 7846 =1 316 MOV R0, #ReplyBuffer+3
0199 754003 =1 317 MOV Temp, #3 ; Copy maximum byte count
019C E6 =1 318 CopyRB: MOV A, @R0
019D F0 =1 319 MOVX @DPTR, A
A51 MACRO ASSEMBLER LCP 25/07/99 18:37:13 PAGE 6
019E 1582 =1 320 DEC DPL
01A0 18 =1 321 DEC R0
01A1 D540F8 =1 322 DJNZ Temp, CopyRB
01A4 E6 =1 323 MOV A, @R0 ; Get real byte count
01A5 =1 324 SendEP0InBuffer:
01A5 907FB5 =1 325 MOV DPTR, #In0ByteCount
01A8 =1 326 StartXfer:
01A8 F0 =1 327 MOVX @DPTR, A ; This write initiates the transfer
01A9 =1 328 HandShake: ; Handshake with host
01A9 754002 =1 329 MOV Temp, #00000010b ; Set HSNAK to tell the SIE that we're done
01AC =1 330 SetEP0Control:
01AC 907FB4 =1 331 MOV DPTR, #EP0Control
01AF E0 =1 332 MOVX A, @DPTR
01B0 4540 =1 333 ORL A, Temp
01B2 F0 =1 334 MOVX @DPTR, A
01B3 22 =1 335 RET
01B4 =1 336 LoadSUDPTR: ; Send the data pointed to by DPTR
01B4 858240 =1 337 MOV Temp, DPL
01B7 E583 =1 338 MOV A, DPH
01B9 907FD4 =1 339 MOV DPTR, #SUDPTR
01BC F0 =1 340 MOVX @DPTR, A
01BD E540 =1 341 MOV A, Temp
01BF A3 =1 342 INC DPTR
01C0 80E6 =1 343 JMP StartXfer
01C2 =1 344 BadRequest: ; Invalid Request was received
01C2 754003 =1 345 MOV Temp, #00000011b ; Set EP0STALL and HSNAK
01C5 80E5 =1 346 JMP SetEP0Control
=1 347
01C7 =1 348 NextDPTR: ; Returns (DPTR + byte DPTR is pointing to)
01C7 E0 =1 349 MOVX A, @DPTR
01C8 =1 350 BumpDPTR: ; Returns (DPTR + ACC)
01C8 2582 =1 351 ADD A, DPL
01CA F582 =1 352 MOV DPL, A
01CC 5002 =1 353 JNC Skip
01CE 0583 =1 354 INC DPH ; Need 16 bit arithmetic here
01D0 22 =1 355 Skip: RET
=1 356
01D1 =1 357 CorrectSubroutine: ; Jump to the subroutine that DPTR is pointing to
01D1 9001F6 =1 358 MOV DPTR, #CommandTable
01D4 31C8 =1 359 CALL BumpDPTR ; Point to entry
01D6 E0 =1 360 MOVX A, @DPTR ; Get the offset
01D7 9001F6 =1 361 MOV DPTR, #CommandTable
01DA 31C8 =1 362 CALL BumpDPTR ; Get the routine address
01DC C082 =1 363 PUSH DPL ; Create a RETURN address on stack
01DE C083 =1 364 PUSH DPH ; Note: JMP @A+DPTR not used since A, DPTR needed
01E0 7845 =1 365 MOV R0, #ReplyBuffer+2
01E2 E4 =1 366 CLR A
01E3 F6 =1 367 MOV @R0, A ; Clear ReplyBuffer
01E4 18 =1 368 DEC R0
01E5 F6 =1 369 MOV @R0, A
01E6 18 =1 370 DEC R0
01E7 7601 =1 371 MOV @R0, #1 ; Default non-descriptor reply
01E9 907FEA =1 372 MOV DPTR, #SETUPDAT+2 ; Point to LOW(wValue)
01EC E0 =1 373 MOVX A, @DPTR ; Many of the routines need these
01ED F5F0 =1 374 MOV B, A ; LOW(wValue) in B
01EF A3 =1 375 INC DPTR
01F0 E0 =1 376 MOVX A, @DPTR ; HIGH(wValue) in A
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