Mercurial > public > hwos_code
annotate src/tft.asm @ 625:5c2ca77ce2df
doc update (Byte 59)
| author | heinrichsweikamp |
|---|---|
| date | Sun, 23 Jun 2019 13:29:17 +0200 |
| parents | d866684249bd |
| children | c40025d8e750 |
| rev | line source |
|---|---|
| 0 | 1 ;============================================================================= |
| 2 ; | |
| 604 | 3 ; File tft.asm ## V2.99c |
| 0 | 4 ; |
| 5 ; Managing the TFT screen | |
| 6 ; | |
| 7 ; Copyright (c) 2011, JD Gascuel, HeinrichsWeikamp, all right reserved. | |
| 8 ;============================================================================= | |
| 9 ; HISTORY | |
| 10 ; 2011-05-24 : [jDG] Cleanups from initial Matthias code. | |
| 11 | |
| 275 | 12 #include "hwos.inc" |
| 0 | 13 #include "wait.inc" |
| 14 #include "varargs.inc" | |
| 15 #include "external_flash.inc" | |
| 16 #include "tft_outputs.inc" | |
| 17 #include "eeprom_rs232.inc" | |
| 18 | |
| 19 ;============================================================================= | |
| 20 ; Basic bit-level macros | |
| 21 | |
| 582 | 22 RD_H macro |
| 23 bsf tft_rd,0 | |
| 24 endm | |
| 0 | 25 |
| 582 | 26 RD_L macro |
| 27 bcf tft_rd,0 | |
| 28 endm | |
| 0 | 29 |
| 582 | 30 RS_H macro |
| 31 bsf tft_rs,0 | |
| 32 endm | |
| 0 | 33 |
| 582 | 34 RS_L macro |
| 35 bcf tft_rs,0 | |
| 36 endm | |
| 0 | 37 |
| 582 | 38 NCS_H macro |
| 39 bsf tft_cs,0 | |
| 40 endm | |
| 0 | 41 |
| 582 | 42 NCS_L macro |
| 43 bcf tft_cs,0 | |
| 44 endm | |
| 0 | 45 |
| 582 | 46 WR_H macro |
| 47 bsf tft_nwr,0 | |
| 48 endm | |
| 0 | 49 |
| 582 | 50 WR_L macro |
| 51 bcf tft_nwr,0 | |
| 52 endm | |
| 0 | 53 |
| 54 ;============================================================================= | |
| 582 | 55 ; Byte-level macros |
| 56 | |
| 0 | 57 Index_out macro low_b |
| 58 movlw low_b | |
| 59 rcall TFT_CmdWrite | |
| 60 endm | |
| 61 | |
| 62 Parameter_out macro high_b, low_b | |
| 63 movlw high_b | |
| 604 | 64 movwf PORTA ; upper |
| 0 | 65 movlw low_b |
| 66 rcall TFT_DataWrite | |
| 67 endm | |
| 68 | |
| 69 | |
| 604 | 70 tft CODE |
| 582 | 71 |
| 151 | 72 ;;============================================================================= |
| 73 ;; TFT_write_flash_image | |
| 74 ;; | |
| 75 ;; Inputs: FSR2 = EEPROM address / 256 | |
| 582 | 76 ;; win_left, win_top : image CENTER position |
| 151 | 77 ;; Outputs: win_height, win_width. |
| 582 | 78 ;; image copied on screen. |
| 151 | 79 ;; Trashed: PROD, hi, lo |
| 80 ;; | |
| 81 ; global TFT_write_flash_image | |
| 82 ;TFT_write_flash_image: | |
| 582 | 83 ; ; Get back the full 24bit EEPROM address |
| 84 ; clrf ext_flash_address+0 | |
| 85 ; movff FSR2L,ext_flash_address+1 | |
| 86 ; movf FSR2H,W | |
| 87 ; iorlw 0x30 | |
| 88 ; movwf ext_flash_address+2 | |
| 151 | 89 ; |
| 582 | 90 ; ; Read header: width and height |
| 91 ; global TFT_write_flash_image_addr | |
| 151 | 92 ;TFT_write_flash_image_addr: |
| 93 ; call ext_flash_read_block_start | |
| 582 | 94 ; movff SSP2BUF,win_width+0 |
| 604 | 95 ; movwf SSP2BUF ; write to buffer to initiate new read |
| 96 ; btfss SSP2STAT, BF ; next byte ready ? | |
| 97 ; bra $-2 ; NO - wait... | |
| 582 | 98 ; movff SSP2BUF,win_width+1 |
| 604 | 99 ; movwf SSP2BUF ; write to buffer to initiate new read |
| 100 ; btfss SSP2STAT, BF ; next byte ready ? | |
| 101 ; bra $-2 ; NO - wait... | |
| 582 | 102 ; movff SSP2BUF,win_height |
| 604 | 103 ; movwf SSP2BUF ; write to buffer to initiate new read |
| 104 ; btfss SSP2STAT, BF ; next byte ready ? | |
| 105 ; bra $-2 ; NO - wait... | |
| 106 ; movff SSP2BUF,WREG ; drop 4th byte | |
| 107 ; movwf SSP2BUF ; write to buffer to initiate new read | |
| 108 ; btfss SSP2STAT, BF ; next byte ready ? | |
| 109 ; bra $-2 ; NO - wait... | |
| 151 | 110 ; |
| 582 | 111 ; ; Sanity check on header to avoid badly uploaded images. |
| 604 | 112 ; iorwf WREG ; check height < 256 |
| 582 | 113 ; bnz TFT_write_flash_image_failed |
| 604 | 114 ; movf win_width+1,W ; check width < 512 |
| 582 | 115 ; andlw 0xFE |
| 116 ; bnz TFT_write_flash_image_failed | |
| 151 | 117 ; |
| 582 | 118 ; ; Center image on win_top, win_left values |
| 604 | 119 ; bcf STATUS,C ; clear carry |
| 120 ; rrcf win_height,W ; and get height/2 | |
| 582 | 121 ; subwf win_top,F ; top -= height/2 |
| 604 | 122 ; rrcf win_width+1,W ; get 9th bit into carry |
| 123 ; rrcf win_width+0,W ; get width/2 (in 0..320 range) | |
| 582 | 124 ; bcf STATUS,C |
| 604 | 125 ; rrcf WREG,W ; get width/2 in 0..160 range |
| 582 | 126 ; subwf win_leftx2,F ; left -= width/2 |
| 151 | 127 ; |
| 604 | 128 ; rcall TFT_box_write ; inputs : win_top, win_leftx2, win_height, win_width (in 1..320 range) |
| 0 | 129 ; |
| 582 | 130 ; ; Compute number of pixels to move (result on 17 bits !) |
| 131 ; clrf TBLPTRU | |
| 132 ; movf win_width+0,W | |
| 604 | 133 ; mulwf win_height ; result in PRODL:H |
| 582 | 134 ; movf win_width+1,W |
| 135 ; bz TFT_write_flash_image_1 ; width > 8bits ? | |
| 604 | 136 ; movf win_height,W ; YES - add extra |
| 582 | 137 ; addwf PRODH,F |
| 604 | 138 ; rlcf TBLPTRU ; and carry into upper register |
| 151 | 139 ;TFT_write_flash_image_1: |
| 582 | 140 ; incf PRODH,F ; pre-condition nested loops |
| 141 ; incf TBLPTRU,F | |
| 151 | 142 ; |
| 582 | 143 ; ; Write pixels |
| 604 | 144 ; Index_out 0x22 ; frame memory data write start |
| 145 ; RS_H ; data | |
| 151 | 146 ; |
| 147 ;TFT_write_flash_image_loop: | |
| 604 | 148 ; btfss SSP2STAT, BF ; buffer full? |
| 149 ; bra $-2 ; NO - wait... | |
| 150 ; movff SSP2BUF,PORTH ; read lo | |
| 151 ; movwf SSP2BUF ; write to buffer to initiate new read | |
| 151 | 152 ; |
| 604 | 153 ; btfss SSP2STAT, BF ; buffer full? |
| 154 ; bra $-2 ; NO - wait... | |
| 155 ; movff SSP2BUF,PORTA ; and read hi | |
| 156 ; movwf SSP2BUF ; write to buffer to initiate new read | |
| 151 | 157 ; WR_L |
| 604 | 158 ; WR_H ; write 1 pixel |
| 151 | 159 ; |
| 160 ; decfsz PRODL,F | |
| 161 ; bra TFT_write_flash_image_loop | |
| 162 ; decfsz PRODH,F | |
| 163 ; bra TFT_write_flash_image_loop | |
| 164 ; decfsz TBLPTRU,F | |
| 165 ; bra TFT_write_flash_image_loop | |
| 166 ; | |
| 604 | 167 ; btfss SSP2STAT, BF ; buffer full? |
| 168 ; bra $-2 ; NO - wait | |
| 169 ; movf SSP2BUF,W ; read dummy byte | |
| 151 | 170 ; |
| 582 | 171 ; bsf flash_ncs ; CS=1 |
| 172 ; movlw 0x00 ; NOP, to stop window mode | |
| 604 | 173 ; bra TFT_CmdWrite ; this routine "returns" |
| 151 | 174 ; |
| 175 ; ;---- Draw a 4x4 red square in place of missing images... | |
| 176 ;TFT_write_flash_image_failed: | |
| 582 | 177 ; movlw -1 |
| 178 ; addwf win_leftx2,F | |
| 179 ; movlw -2 | |
| 180 ; addwf win_top,F | |
| 181 ; movlw 2 | |
| 182 ; movwf win_width+0 | |
| 183 ; clrf win_width+1 | |
| 184 ; movlw 4 | |
| 185 ; movwf win_height | |
| 186 ; movlw color_red | |
| 187 ; rcall TFT_set_color | |
| 188 ; goto TFT_box | |
| 151 | 189 ; |
| 190 ;;============================================================================= | |
| 0 | 191 |
| 582 | 192 |
| 193 global TFT_ClearScreen | |
| 0 | 194 TFT_ClearScreen: |
| 608 | 195 btfsc screen_type2 |
| 196 bra TFT_ClearScreen_display2 | |
| 604 | 197 Index_out 0x50 ; window horizontal start address |
| 582 | 198 Parameter_out 0x00, 0x00 ; 0-239 |
| 604 | 199 Index_out 0x51 ; window horizontal end address |
| 582 | 200 Parameter_out 0x00, 0xEF ; 0-239 |
| 604 | 201 Index_out 0x52 ; window vertical start address |
| 582 | 202 Parameter_out 0x00, 0x00 ; 0-319 |
| 604 | 203 Index_out 0x53 ; window vertical end address |
| 582 | 204 Parameter_out 0x01, 0x3F ; 0-319 |
| 604 | 205 Index_out 0x20 ; frame memory horizontal address |
| 582 | 206 Parameter_out 0x00, 0x00 ; 0-239 |
| 604 | 207 Index_out 0x21 ; frame memory vertical address |
| 582 | 208 Parameter_out 0x01, 0x3F ; 0-319 |
| 0 | 209 |
| 604 | 210 Index_out 0x22 ; frame memory data write start |
| 0 | 211 |
| 604 | 212 RD_H ; not read |
| 213 RS_H ; data | |
| 214 NCS_L ; not CS | |
| 215 clrf PORTH ; data lower | |
| 0 | 216 |
| 217 movlw d'10' | |
| 218 movwf tft_temp3 | |
| 219 TFT_ClearScreen2: | |
| 220 movlw d'30' | |
| 221 movwf tft_temp2 | |
| 222 TFT_ClearScreen3: | |
| 604 | 223 clrf tft_temp1 ; 30*10*256=76800 pixels -> clear complete 240*320 |
| 582 | 224 bcf INTCON,GIE |
| 0 | 225 TFT_ClearScreen4: |
| 226 WR_L | |
| 604 | 227 WR_H ; tick |
| 0 | 228 decfsz tft_temp1,F |
| 229 bra TFT_ClearScreen4 | |
| 582 | 230 bsf INTCON,GIE |
| 0 | 231 decfsz tft_temp2,F |
| 232 bra TFT_ClearScreen3 | |
| 233 decfsz tft_temp3,F | |
| 234 bra TFT_ClearScreen2 | |
| 582 | 235 |
| 236 movlw 0x00 ; NOP, to stop window mode | |
| 604 | 237 bra TFT_CmdWrite ; and return |
| 582 | 238 |
| 608 | 239 TFT_ClearScreen_display2: |
| 240 ; Column Address start | |
| 241 movlw 0x02 | |
| 242 rcall TFT_CmdWrite | |
| 243 movlw 0x00 | |
| 244 rcall TFT_DataWrite | |
| 245 movlw 0x03 | |
| 246 rcall TFT_CmdWrite | |
| 247 movlw 0x00 | |
| 248 rcall TFT_DataWrite | |
| 249 | |
| 250 ; Column Address end | |
| 251 movlw 0x04 | |
| 252 rcall TFT_CmdWrite | |
| 253 movlw 0x00 | |
| 254 rcall TFT_DataWrite | |
| 255 movlw 0x05 | |
| 256 rcall TFT_CmdWrite | |
| 257 movlw 0xEF | |
| 258 rcall TFT_DataWrite | |
| 259 | |
| 260 ; Row address start | |
| 261 movlw 0x06 | |
| 262 rcall TFT_CmdWrite | |
| 263 movlw 0x00 | |
| 264 rcall TFT_DataWrite | |
| 265 movlw 0x07 | |
| 266 rcall TFT_CmdWrite | |
| 267 movlw 0x00 | |
| 268 rcall TFT_DataWrite | |
| 269 | |
| 270 ; Row address end | |
| 271 movlw 0x08 | |
| 272 rcall TFT_CmdWrite | |
| 273 movlw 0x01 | |
| 274 rcall TFT_DataWrite | |
| 275 movlw 0x09 | |
| 276 rcall TFT_CmdWrite | |
| 277 movlw 0x3F | |
| 278 rcall TFT_DataWrite | |
| 279 | |
| 280 movlw 0x22 ; Start Writing Data to GRAM | |
| 281 rcall TFT_CmdWrite | |
| 282 | |
| 283 bsf tft_rs ; Data! | |
| 284 | |
| 285 movlw .160 | |
| 286 movwf PRODH | |
| 287 clrf PORTH | |
| 288 TFT_ClearScreen2_display2: | |
| 289 movlw .240 | |
| 290 movwf PRODL | |
| 291 TFT_ClearScreen3_display2: | |
| 292 bcf tft_nwr | |
| 293 bsf tft_nwr ; Upper | |
| 294 bcf tft_nwr | |
| 295 bsf tft_nwr ; High | |
| 296 bcf tft_nwr | |
| 297 bsf tft_nwr ; Lower | |
| 298 bcf tft_nwr | |
| 299 bsf tft_nwr ; Upper | |
| 300 bcf tft_nwr | |
| 301 bsf tft_nwr ; High | |
| 302 bcf tft_nwr | |
| 303 bsf tft_nwr ; Lower | |
| 304 decfsz PRODL,F | |
| 305 bra TFT_ClearScreen3_display2 | |
| 306 decfsz PRODH,F | |
| 307 bra TFT_ClearScreen2_display2 | |
| 308 return | |
| 0 | 309 |
| 310 ;============================================================================= | |
| 582 | 311 |
| 312 global TFT_DisplayOff | |
| 0 | 313 TFT_DisplayOff: |
| 608 | 314 clrf CCP1CON ; stop PWM |
| 315 bcf PORTC,2 ; Pull PWM out to GND | |
| 0 | 316 clrf PORTA |
| 582 | 317 clrf PORTH |
| 608 | 318 RD_L ; LOW |
| 319 RS_L ; LOW | |
| 320 bcf tft_nwr | |
| 321 bcf tft_cs | |
| 322 bcf tft_nreset | |
| 323 bsf tft_power ; inverted... | |
| 324 bcf lightsen_power ; power-down light sensor | |
| 0 | 325 return |
| 326 | |
| 327 ; ----------------------------- | |
| 328 ; TFT boot | |
| 329 ; ----------------------------- | |
| 582 | 330 |
| 331 global TFT_boot | |
| 0 | 332 TFT_boot: |
| 608 | 333 clrf CCP1CON ; stop PWM |
| 334 bcf PORTC,2 ; Pull PWM out to GND | |
| 0 | 335 clrf PORTA |
| 336 clrf PORTH | |
| 337 RD_L ; LOW | |
| 338 bcf tft_nwr | |
| 339 nop | |
| 340 bcf tft_cs | |
| 341 nop | |
| 342 bcf tft_nreset | |
| 343 WAITMS d'1' | |
| 344 bcf tft_power ; inverted... | |
| 345 WAITMS d'1' | |
| 346 | |
| 347 RD_H ; Keep high | |
| 348 WR_H ; | |
| 349 NCS_L ; Not CS | |
| 350 | |
| 351 WAITMS d'2' | |
| 352 bsf tft_nreset | |
| 461 | 353 WAITMS d'5' |
| 354 bcf tft_nreset | |
| 355 WAITMS d'5' | |
| 356 bsf tft_nreset | |
| 0 | 357 WAITMS d'150' |
| 604 | 358 bsf lightsen_power ; supply power to light sensor |
| 0 | 359 |
| 582 | 360 ; Data Transfer Synchronization |
| 0 | 361 Parameter_out 0x00, 0x00 |
| 362 Parameter_out 0x00, 0x00 | |
| 582 | 363 |
| 608 | 364 btfsc screen_type2 ; Display 2 |
| 365 bra TFT_boot_screen2 | |
| 366 | |
|
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367 ; Get screentype from Bootloader-Info |
| 582 | 368 movlw 0x7B |
| 369 movwf TBLPTRL | |
| 370 movlw 0xF7 | |
| 371 movwf TBLPTRH | |
| 372 movlw 0x01 | |
| 373 movwf TBLPTRU | |
| 604 | 374 TBLRD*+ ; reads .110 for cR and USB OSTC3, .0 for BLE (2 and 3), and .2 for display1 OSTC |
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375 movlw 0x02 |
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376 cpfseq TABLAT |
| 604 | 377 bra TFT_boot_0 ; display0 |
| 360 | 378 |
| 379 TFT_boot_1: | |
| 582 | 380 ; Init through config table... |
| 381 movlw 0x74 | |
| 382 movwf TBLPTRL | |
| 383 movlw 0xF7 | |
| 384 movwf TBLPTRH | |
| 385 movlw 0x01 | |
| 386 movwf TBLPTRU | |
| 387 bsf screen_type | |
| 388 bra TFT_boot_com | |
| 360 | 389 |
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390 TFT_boot_0: |
| 582 | 391 ; Init through config table... |
| 392 movlw LOW display0_config_table | |
| 393 movwf TBLPTRL | |
| 394 movlw HIGH display0_config_table | |
| 395 movwf TBLPTRH | |
| 396 movlw UPPER display0_config_table | |
| 397 movwf TBLPTRU | |
| 398 bcf screen_type | |
| 399 | |
| 360 | 400 TFT_boot_com: |
| 582 | 401 rcall display0_init_loop |
| 0 | 402 |
| 582 | 403 Index_out 0x03 |
| 404 btfsc flip_screen ; 180° rotation ? | |
| 604 | 405 bra TFT_boot2 ; YES |
| 360 | 406 |
| 582 | 407 btfss screen_type ; display1? |
| 604 | 408 bra TFT_boot1a ; NO |
| 582 | 409 Parameter_out 0x10, 0x00 ; display1 |
| 410 bra TFT_boot3 | |
| 360 | 411 TFT_boot1a: |
| 582 | 412 Parameter_out 0x50, 0x20 ; display0 |
| 413 bra TFT_boot3 | |
|
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414 TFT_boot2: |
| 582 | 415 btfss screen_type ; display1? |
| 604 | 416 bra TFT_boot2a ; NO |
| 582 | 417 Parameter_out 0x10, 0x30 ; display1 |
| 418 bra TFT_boot3 | |
| 360 | 419 TFT_boot2a: |
| 582 | 420 Parameter_out 0x50, 0x10 ; display0 |
|
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421 TFT_boot3: |
| 0 | 422 Index_out 0x22 |
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423 rcall TFT_ClearScreen |
| 0 | 424 Index_out 0x07 |
| 312 | 425 Parameter_out 0x01, 0x33 |
| 0 | 426 return |
| 427 | |
| 428 display0_config_table: | |
| 582 | 429 ; Reg, Dat0, Dat1 or 0xFF,0x00,0x00 for end |
| 430 db 0xA4,0x00,0x01,0xFF,.002,0x00 | |
| 431 db 0x09,0x00,0x01,0x92,0x04,0x00 | |
| 432 db 0x93,0x04,0x02,0x94,0x00,0x02 | |
| 433 db 0x07,0x00,0x00,0x10,0x04,0x30 | |
| 434 db 0x11,0x02,0x37,0x12,0x11,0x8D | |
| 435 db 0x13,0x11,0x00,0x01,0x01,0x00 | |
| 436 db 0x02,0x02,0x00,0x03,0x50,0x20 | |
| 437 db 0x0A,0x00,0x08,0x0D,0x00,0x00 | |
| 438 db 0x0E,0x00,0x30,0xFF,.151,0x00 | |
| 439 db 0x12,0x11,0xBD,0x20,0x00,0x00 | |
| 440 db 0x21,0x00,0x00,0x30,0x06,0x02 | |
| 441 db 0x31,0x56,0x0D,0x32,0x05,0x07 | |
| 442 db 0x33,0x06,0x09,0x34,0x00,0x00 | |
| 443 db 0x35,0x09,0x06,0x36,0x57,0x05 | |
| 444 db 0x37,0x0D,0x06,0x38,0x02,0x06 | |
| 445 db 0x39,0x00,0x00,0xFF,0x00,0x00 | |
| 0 | 446 |
| 447 display0_init_loop: | |
| 582 | 448 TBLRD*+ |
| 449 movlw 0xFF | |
| 450 cpfseq TABLAT | |
| 604 | 451 bra display0_config_write ; write config pair to display |
| 582 | 452 ; Delay ms or quit (return) |
| 453 TBLRD*+ | |
| 604 | 454 tstfsz TABLAT ; end of config? |
| 455 bra $+4 ; NO | |
| 456 return ; YES - done | |
| 582 | 457 movf TABLAT,W |
| 604 | 458 call WAITMSX ; wait WREG milliseconds |
| 459 TBLRD*+ ; dummy read (Third byte of delay command) | |
| 460 bra display0_init_loop ; loop | |
| 0 | 461 |
| 604 | 462 display0_config_write: ; with command in WREG |
| 582 | 463 movf TABLAT,W |
| 604 | 464 rcall TFT_CmdWrite ; write command |
| 465 TBLRD*+ ; get config0 | |
| 582 | 466 movff TABLAT,PORTA |
| 604 | 467 TBLRD*+ ; get config1 |
| 582 | 468 movf TABLAT,W |
| 604 | 469 rcall TFT_DataWrite ; write config |
| 470 bra display0_init_loop ; loop | |
| 0 | 471 |
| 608 | 472 TFT_boot_screen2: |
| 473 bsf tft_nwr ; release bus. | |
| 474 rcall display1_init ; Init sequence | |
| 475 | |
| 476 btfss flip_screen ; 180° rotation ? | |
| 477 bra TFT_ClearScreen ; No, done. Clearscreen and return | |
| 478 ; flip the GRAM | |
| 479 Index_out 0x16 | |
| 480 movlw 0x48 ; Flip image in the GRAM (Very elegant with display2...) | |
| 481 rcall TFT_DataWrite ; Write config | |
| 482 bra TFT_ClearScreen ; Clearscreen and return | |
| 483 | |
| 484 | |
| 485 display1_init: | |
| 486 movlw LOW 0x1F8BC | |
| 487 movwf TBLPTRL | |
| 488 movlw HIGH 0x1F8BC | |
| 489 movwf TBLPTRH | |
| 490 movlw UPPER 0x1F8BC | |
| 491 movwf TBLPTRU | |
| 492 display1_init_loop: | |
| 493 TBLRD*+ | |
| 494 movlw 0xFF | |
| 495 cpfseq TABLAT | |
| 496 bra display1_config_write ; Write Config pair to Display | |
| 497 ; Delay ms or quit (return) | |
| 498 TBLRD*+ | |
| 499 tstfsz TABLAT ; End of config? | |
| 500 bra $+4 ; No | |
| 501 return ; Done. | |
| 502 movf TABLAT,W | |
| 503 call WAITMSX ; Wait WREG milliseconds | |
| 504 bra display1_init_loop ; Loop | |
| 505 | |
| 506 display1_config_write: ; With command in WREG | |
| 507 movf TABLAT,W | |
| 508 rcall TFT_CmdWrite ; Write command | |
| 509 TBLRD*+ ; Get config | |
| 510 movf TABLAT,W | |
| 511 rcall TFT_DataWrite ; Write config | |
| 512 bra display1_init_loop ; Loop | |
| 513 | |
| 0 | 514 |
| 515 ;============================================================================= | |
| 608 | 516 |
| 517 global TFT_CmdWrite | |
| 518 TFT_CmdWrite: | |
| 519 RS_L ; command | |
| 520 btfsc screen_type2 | |
| 521 bra TFT_CmdWrite_screen2 | |
| 522 clrf PORTA ; upper | |
| 523 bcf INTCON,GIE | |
| 524 movwf PORTH ; lower | |
| 525 WR_L | |
| 526 WR_H ; tick | |
| 527 bsf INTCON,GIE | |
| 528 return | |
| 529 TFT_CmdWrite_screen2: | |
| 530 movwf PORTH ; Lower | |
| 531 WR_L | |
| 532 WR_H ; Tick | |
| 533 return; | |
| 534 | |
| 535 global TFT_DataWrite | |
| 536 TFT_DataWrite: | |
| 537 RS_H ; data | |
| 538 btfsc screen_type2 | |
| 539 bra TFT_DataWrite_screen2 | |
| 540 bcf INTCON,GIE | |
| 541 movwf PORTH ; lower | |
| 542 WR_L | |
| 543 WR_H ; tick | |
| 544 bsf INTCON,GIE | |
| 545 return | |
| 546 TFT_DataWrite_screen2: | |
| 547 movwf PORTH ; Lower | |
| 548 WR_L | |
| 549 WR_H ; Tick | |
| 550 return | |
| 551 | |
| 552 ;============================================================================= | |
| 553 | |
| 0 | 554 ; Smooth lighting-up of the display: |
| 555 ; | |
| 556 ; Trashes: WREG, PRODL | |
| 557 ; Typical usage: | |
| 604 | 558 ; clrf CCPR1L ; backlight off |
| 582 | 559 ; [draw splash screen] |
| 560 ; call TFT_DisplayFadeIn | |
| 561 | |
| 562 global TFT_Display_FadeIn | |
| 0 | 563 TFT_Display_FadeIn: |
| 604 | 564 movlw CCP1CON_VALUE ; see hwos.inc |
| 582 | 565 movwf CCP1CON |
| 604 | 566 bsf tft_is_dimming ; TFT is dimming, ignore ambient sensor |
| 567 clrf CCPR1L ; backlight off - to be sure | |
| 582 | 568 movff max_CCPR1L,PRODL |
| 0 | 569 TFT_Display_FadeIn_0: |
| 604 | 570 incf CCPR1L,F ; duty cycle |
| 582 | 571 WAITMS d'2' |
| 572 decfsz PRODL,F | |
| 573 bra TFT_Display_FadeIn_0 | |
| 604 | 574 bcf tft_is_dimming ; dimming done |
| 582 | 575 return |
| 0 | 576 |
| 577 ;============================================================================= | |
| 578 ; Smooth lighting-off of the display: | |
| 579 ; Trashes: WREG, PRODL | |
| 582 | 580 |
| 581 global TFT_Display_FadeOut | |
| 0 | 582 TFT_Display_FadeOut: |
| 582 | 583 movff max_CCPR1L,PRODL |
| 604 | 584 bsf tft_is_dimming ; TFT is dimming, ignore ambient sensor |
| 0 | 585 TFT_Display_FadeOut_0: |
| 604 | 586 movff PRODL,CCPR1L ; duty cycle |
| 582 | 587 WAITMS d'1' |
| 588 decfsz PRODL,F | |
| 589 bra TFT_Display_FadeOut_0 | |
| 590 clrf CCPR1L | |
| 591 return | |
| 0 | 592 |
| 593 ;============================================================================= | |
| 594 | |
| 604 | 595 global box_std_block, box_black_block, box_color_block |
| 0 | 596 |
| 604 | 597 box_std_block: ; use white color |
| 582 | 598 setf WREG |
| 599 bra box_common | |
| 604 | 600 box_black_block: ; use black color |
| 582 | 601 clrf WREG |
| 0 | 602 box_common: |
| 603 box_color_block: | |
| 582 | 604 rcall TFT_set_color |
| 605 VARARGS_BEGIN | |
| 606 VARARGS_GET8 win_top | |
| 607 VARARGS_GET8 win_height | |
| 608 VARARGS_GET8 win_leftx2 | |
| 609 VARARGS_GET8 win_width | |
| 610 VARARGS_END | |
| 611 bra TFT_box | |
| 0 | 612 |
| 613 ;----------------------------------------------------------------------------- | |
| 614 | |
| 582 | 615 global box_frame_std, box_frame_common, box_frame_color, box_frame_color16 |
| 0 | 616 |
| 617 box_frame_std: | |
| 582 | 618 setf WREG |
| 619 rcall TFT_set_color | |
| 0 | 620 box_frame_common: |
| 582 | 621 VARARGS_BEGIN |
| 622 VARARGS_GET8 win_top | |
| 623 VARARGS_GET8 win_height | |
| 624 VARARGS_GET8 win_leftx2 | |
| 625 VARARGS_GET8 win_width | |
| 626 VARARGS_END | |
| 627 bra TFT_frame | |
| 0 | 628 box_frame_color: |
| 582 | 629 rcall TFT_set_color |
| 0 | 630 box_frame_color16: |
| 582 | 631 bra box_frame_common |
| 0 | 632 |
| 434 | 633 ;;============================================================================= |
| 634 ;; Init for half_pixel_write | |
| 635 ;; Set column register on TFT device, and current color. | |
| 636 ;; Inputs: win_leftx2 | |
| 637 ;; Outputs: win_color:2 | |
| 638 ;; Trashed: WREG, PROD | |
| 582 | 639 ; |
| 640 ; global init_pixel_write | |
| 434 | 641 ;init_pixel_write: |
| 582 | 642 ; movf win_leftx2,W |
| 643 ; mullw 2 | |
| 604 | 644 ; rcall pixel_write_col320 ; start address vertical (.0 - .319) |
| 582 | 645 ; setf WREG |
| 646 ; bra TFT_set_color | |
| 0 | 647 |
| 648 ;----------------------------------------------------------------------------- | |
| 649 ; Writes two half-pixels at position (win_top,win_leftx2) | |
| 650 ; Inputs: win_leftx2, win_top, win_color:2 | |
| 651 ; Trashed: WREG, PROD | |
| 582 | 652 |
| 653 global pixel_write | |
| 0 | 654 pixel_write: |
| 582 | 655 movf win_leftx2,W |
| 656 mullw 2 ; win_leftx2 x 2 -> PRODH:PRODL | |
| 604 | 657 rcall pixel_write_col320 ; start address vertical (.0 - .319) |
| 658 rcall half_pixel_write ; write this half-one | |
| 659 movf win_leftx2,W ; address of next one | |
| 582 | 660 mullw 2 |
| 661 infsnz PRODL ; +1 | |
| 662 incf PRODH | |
| 663 rcall pixel_write_col320 | |
| 604 | 664 bra half_pixel_write ; note: Cmd 0x20 is mandatory, because |
| 582 | 665 ; of the auto-increment going vertical |
| 0 | 666 |
| 667 global pixel_write_col320 | |
| 668 pixel_write_col320: | |
| 608 | 669 btfsc screen_type2 ; display2? |
| 670 bra pixel_write_col320_d2 ; Yes | |
| 582 | 671 btfsc screen_type ; display1? |
| 604 | 672 bra pixel_write_col320_d1 ; YES |
| 582 | 673 ; Display0 |
| 674 btfss flip_screen ; 180° rotation? | |
| 604 | 675 bra pixel_write_noflip_H ; NO |
| 676 bra pixel_write_flip_H ; YES | |
| 582 | 677 pixel_write_col320_d1: ; Display1 |
| 678 btfsc flip_screen ; 180° rotation? | |
| 604 | 679 bra pixel_write_noflip_H ; YES for d1 |
| 680 pixel_write_flip_H: ; flip d0 | |
| 681 movf PRODL,W ; 16 bits 319 - PROD --> PROD | |
| 582 | 682 sublw LOW(.319) ; 319-W --> W |
| 683 movwf PRODL | |
| 684 movf PRODH,W | |
| 604 | 685 btfss STATUS,C ; borrow = /CARRY |
| 582 | 686 incf WREG |
| 687 sublw HIGH(.319) | |
| 688 movwf PRODH | |
| 151 | 689 |
| 690 pixel_write_noflip_H: | |
| 604 | 691 Index_out 0x21 ; frame memory vertical address |
| 582 | 692 bra TFT_DataWrite_PROD ; and return... |
| 0 | 693 |
| 608 | 694 pixel_write_col320_d2: |
| 695 movlw 0x06 | |
| 696 rcall TFT_CmdWrite | |
| 697 movf PRODH,W | |
| 698 rcall TFT_DataWrite | |
| 699 movlw 0x07 | |
| 700 rcall TFT_CmdWrite | |
| 701 movf PRODL,W | |
| 702 rcall TFT_DataWrite | |
| 703 | |
| 704 incf PRODL,F | |
| 705 movlw .0 | |
| 706 addwfc PRODH,F ;+1 | |
| 707 | |
| 708 movlw 0x08 | |
| 709 rcall TFT_CmdWrite | |
| 710 movf PRODH,W | |
| 711 rcall TFT_DataWrite | |
| 712 movlw 0x09 | |
| 713 rcall TFT_CmdWrite | |
| 714 movf PRODL,W | |
| 715 bra TFT_DataWrite ; And return... | |
| 716 | |
| 0 | 717 ;----------------------------------------------------------------------------- |
| 718 ; Writes one half-pixel at position (win_top,win_leftx2). | |
| 719 ; Inputs: win_leftx2, win_top, win_color:2 | |
| 720 ; Trashed: WREG, PROD | |
| 582 | 721 |
| 722 global half_pixel_write | |
| 0 | 723 half_pixel_write: |
| 582 | 724 movf win_top,W ; d'0' ... d'239' |
| 725 ; Variant with Y position in WREG. | |
| 0 | 726 half_pixel_write_1: |
| 608 | 727 btfsc screen_type2 |
| 728 bra half_pixel_write_1_display1 ; Yes. | |
| 729 | |
| 582 | 730 btfss flip_screen ; 180° rotation? |
| 731 sublw .239 ; 239-Y --> Y | |
| 604 | 732 mullw .1 ; copy row to PRODL (PRODH=0) |
| 733 Index_out 0x20 ; frame memory horizontal address | |
| 582 | 734 rcall TFT_DataWrite_PROD |
| 0 | 735 |
| 604 | 736 Index_out 0x22 ; frame memory data write start |
| 737 RS_H ; data | |
| 582 | 738 bcf INTCON,GIE |
| 604 | 739 movff win_color1,PORTA ; upper |
| 740 movff win_color2,PORTH ; lower | |
| 582 | 741 WR_L |
| 604 | 742 WR_H ; tick |
| 582 | 743 bsf INTCON,GIE |
| 744 return | |
| 0 | 745 |
| 608 | 746 half_pixel_write_1_display1: |
| 747 mullw 1 ; Copy row to PRODL (PRODH=0) | |
| 748 ; Row address start | |
| 749 movlw 0x02 | |
| 750 rcall TFT_CmdWrite | |
| 751 movlw .0 | |
| 752 rcall TFT_DataWrite | |
| 753 movlw 0x03 | |
| 754 rcall TFT_CmdWrite | |
| 755 movf PRODL,W | |
| 756 rcall TFT_DataWrite | |
| 757 | |
| 758 incf PRODL,F | |
| 759 | |
| 760 movlw 0x04 | |
| 761 rcall TFT_CmdWrite | |
| 762 movlw .0 | |
| 763 rcall TFT_DataWrite | |
| 764 movlw 0x05 | |
| 765 rcall TFT_CmdWrite | |
| 766 movf PRODL,W | |
| 767 rcall TFT_DataWrite | |
| 768 | |
| 769 movff win_color1,PRODH | |
| 770 movff win_color2,PRODL | |
| 771 rcall convert_for_display2 | |
| 772 | |
| 773 movlw 0x22 ; Start Writing Data to GRAM | |
| 774 rcall TFT_CmdWrite | |
| 775 RS_H ; Data | |
| 776 movff win_color5, PORTH | |
| 777 WR_L | |
| 778 WR_H ; Tick | |
| 779 movff win_color4, PORTH | |
| 780 WR_L | |
| 781 WR_H ; Tick | |
| 782 movff win_color3, PORTH | |
| 783 WR_L | |
| 784 WR_H ; Tick | |
| 785 return | |
| 786 | |
| 0 | 787 ;----------------------------------------------------------------------------- |
| 788 ; Writes a vertical line of half-pixel at position (win_top,win_leftx2,win_height). | |
| 789 ; Inputs: win_leftx2, win_top, win_height, win_color:2 | |
| 790 ; Trashed: WREG, PROD, TABLAT, TBLPTRL | |
| 582 | 791 |
| 0 | 792 global half_vertical_line |
| 793 half_vertical_line: | |
| 604 | 794 clrf TABLAT ; loop index |
| 0 | 795 |
| 796 half_vertical_line_loop: | |
| 604 | 797 movf win_leftx2,W ; init X position |
| 582 | 798 mullw .2 |
| 604 | 799 movf TABLAT,W ; get loop index |
| 800 andlw .1 ; just low bit | |
| 801 xorwf PRODL,F ; and use it to jitter current X position | |
| 802 rcall pixel_write_col320 ; start address vertical (.0 - .319) | |
| 0 | 803 |
| 604 | 804 movf win_height,W ; index reached height (bank0 read) ? |
| 582 | 805 xorwf TABLAT,W |
| 604 | 806 btfsc STATUS,Z ; Equal ? |
| 807 return ; YES - done | |
| 808 movf win_top,W ; Y = top + index (bank0 read) | |
| 582 | 809 addwf TABLAT,W |
| 810 rcall half_pixel_write_1 | |
| 811 incf TABLAT,F ; index++ | |
| 812 bra half_vertical_line_loop | |
| 0 | 813 |
| 814 ;----------------------------------------------------------------------------- | |
| 815 ; Writes a horizontal line of half-pixel at position (win_top,win_leftx2,win_width). | |
| 816 ; Inputs: win_leftx2, win_top, win_width, win_color:2 | |
| 817 ; Trashed: WREG, PROD, TABLAT, TBLPTRL | |
| 582 | 818 |
| 0 | 819 global half_horizontal_line |
| 820 half_horizontal_line: | |
| 604 | 821 clrf TABLAT ; loop index |
| 0 | 822 |
| 823 half_horizontal_line_loop: | |
| 604 | 824 movf win_leftx2,W ; init X position |
| 582 | 825 mullw .2 |
| 604 | 826 rcall pixel_write_col320 ; start address vertical (.0 - .319) |
| 827 movf win_width,W ; index reached height (bank0 read) ? | |
| 582 | 828 xorwf TABLAT,W |
| 604 | 829 btfsc STATUS,Z ; equal ? |
| 830 return ; YES - done | |
| 831 movf win_top,W ; Y = top + index (bank0 read) | |
| 582 | 832 addwf TABLAT,W |
| 833 rcall half_pixel_write_1 | |
| 834 incf TABLAT,F ; index++ | |
| 835 bra half_horizontal_line_loop | |
| 0 | 836 |
| 837 | |
| 838 ;----------------------------------------------------------------------------- | |
| 839 ; TFT Data Cmd via W | |
| 582 | 840 |
| 841 global TFT_DataWrite_PROD | |
| 0 | 842 TFT_DataWrite_PROD: |
| 604 | 843 ; RD_H ; keep high |
| 844 RS_H ; data | |
| 608 | 845 btfsc screen_type2 |
| 846 bra TFT_DataWrite_PROD_display2 | |
| 582 | 847 bcf INTCON,GIE |
| 604 | 848 movff PRODH,PORTA ; move high byte to PORTA |
| 849 movff PRODL,PORTH ; move low byte to PORTH | |
| 0 | 850 WR_L |
| 604 | 851 WR_H ; tick |
| 582 | 852 bsf INTCON,GIE |
| 0 | 853 return |
| 854 | |
| 608 | 855 TFT_DataWrite_PROD_display2: |
| 856 movff PRODH,PORTH ; Move high byte to PORTH (DISPLAY is bigendian) | |
| 857 WR_L | |
| 858 WR_H | |
| 859 movff PRODL,PORTH ; Move low byte to PORTH | |
| 860 WR_L | |
| 861 WR_H | |
| 862 movff win_color3,PORTH ; Move low(est) byte to PORTH | |
| 863 WR_L | |
| 864 WR_H | |
| 865 return | |
| 866 | |
| 0 | 867 TFT_DataRead_PROD: |
| 604 | 868 Index_out 0x22 ; frame memory data read start |
| 360 | 869 TFT_CmdRead_PROD: |
| 604 | 870 setf TRISA ; port A as input |
| 871 setf TRISH ; port H as input | |
| 872 RS_H ; data | |
| 873 WR_H ; not write | |
| 874 RD_L ; read | |
| 582 | 875 nop |
| 876 nop | |
| 877 nop | |
| 604 | 878 RD_H ; tick |
| 582 | 879 nop |
| 880 nop | |
| 881 nop | |
| 604 | 882 RD_L ; read |
| 582 | 883 nop |
| 884 ;nop | |
| 885 ;nop | |
| 886 movff PORTA,PRODH | |
| 887 movff PORTH,PRODL | |
| 604 | 888 RD_H ; tick |
| 582 | 889 nop |
| 604 | 890 clrf TRISA ; port A as output |
| 891 clrf TRISH ; port H as output | |
| 0 | 892 return |
| 893 | |
| 894 ;============================================================================= | |
| 604 | 895 ; Output TFT Window Address commands |
| 896 ; Inputs : win_top, win_leftx2, win_height, win_width | |
| 897 ; Output : PortA/PortH commands | |
| 0 | 898 ; Trashed: PROD |
| 582 | 899 |
| 900 global TFT_box_write | |
| 0 | 901 TFT_box_write: |
| 604 | 902 movf win_leftx2,W ; compute left = 2 * leftx2 --> PROD |
| 432 | 903 mullw 2 |
| 0 | 904 |
| 608 | 905 btfsc screen_type2 |
| 906 bra TFT_box_write_display2 | |
| 907 | |
| 582 | 908 global TFT_box_write_16bit_win_left |
| 604 | 909 TFT_box_write_16bit_win_left: ; Wwth column in PRODL:PRODH |
| 582 | 910 btfsc screen_type ; display1? |
| 604 | 911 bra TFT_box_write_16bit_win_left_d1 ; YES |
| 582 | 912 ; Display0 |
| 913 btfsc flip_screen ; 180° rotation? | |
| 604 | 914 bra DISP_box_flip_H ; YES |
| 915 bra TFT_box_write_16bit_win_left_com ; NO | |
| 582 | 916 TFT_box_write_16bit_win_left_d1: ; Display1 |
| 917 btfss flip_screen ; 180° rotation? | |
| 604 | 918 bra DISP_box_flip_H ; NO for d1 |
| 582 | 919 ; Yes for d1 |
| 361 | 920 TFT_box_write_16bit_win_left_com: |
| 582 | 921 ;---- Normal horizontal window --------------------------------------- |
| 604 | 922 Index_out 0x52 ; window vertical start address |
| 923 rcall TFT_DataWrite_PROD ; output left | |
| 924 Index_out 0x21 ; frame memory vertical address | |
| 925 rcall TFT_DataWrite_PROD ; output left | |
| 0 | 926 |
| 582 | 927 movf win_width+0,W ; right = left + width - 1 |
| 432 | 928 addwf PRODL,F |
| 929 movf win_width+1,W | |
| 930 addwfc PRODH,F | |
| 582 | 931 decf PRODL,F ; decrement result |
| 932 btfss STATUS,C | |
| 432 | 933 decf PRODH,F |
| 0 | 934 |
| 604 | 935 Index_out 0x53 ; window vertical end address |
| 582 | 936 rcall TFT_DataWrite_PROD |
| 937 bra DISP_box_noflip_H | |
| 0 | 938 |
| 582 | 939 ;---- Flipped horizontal window -------------------------------------- |
| 151 | 940 DISP_box_flip_H: |
| 604 | 941 movf PRODL,W ; 16 bits 319 - PROD --> PROD |
| 942 sublw LOW(.319) ; 319 - WREG --> WREG | |
| 582 | 943 movwf PRODL |
| 944 movf PRODH,W | |
| 604 | 945 btfss STATUS,C ; borrow = /CARRY |
| 582 | 946 incf WREG |
| 947 sublw HIGH(.319) | |
| 948 movwf PRODH | |
|
152
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|
949 |
| 604 | 950 Index_out 0x53 ; window vertical start address |
| 951 rcall TFT_DataWrite_PROD ; output left | |
| 952 Index_out 0x21 ; frame memory vertical address | |
| 953 rcall TFT_DataWrite_PROD ; output left | |
| 151 | 954 |
| 604 | 955 movf win_width+0,W ; 16 bits PROD - width --> PROD |
| 582 | 956 subwf PRODL,F ; PRODL - WREG --> PRODL |
| 957 movf win_width+1,W | |
| 958 subwfb PRODH,F | |
| 604 | 959 infsnz PRODL ; PROD + 1 --> PROD |
| 582 | 960 incf PRODH |
| 151 | 961 |
| 604 | 962 Index_out 0x52 ; window vertical end address |
| 582 | 963 rcall TFT_DataWrite_PROD |
| 151 | 964 |
| 965 DISP_box_noflip_H: | |
| 582 | 966 btfss flip_screen ; 180° rotation ? |
| 604 | 967 bra TFT_box_noflip_V ; NO |
| 151 | 968 |
| 582 | 969 ;---- Flipped vertical window ----------------------------------------- |
| 970 movff win_top,PRODH ; top --> PRODH (first byte) | |
| 971 movf win_height,W | |
| 972 addwf PRODH,W | |
| 432 | 973 decf WREG |
| 604 | 974 movwf PRODL ; top + height - 1 --> PRODL (second byte) |
| 151 | 975 |
| 604 | 976 Index_out 0x50 ; window horizontal start address |
| 432 | 977 movf PRODH,W |
| 604 | 978 rcall TFT_DataWrite ; lower (and tick) |
| 151 | 979 |
| 604 | 980 Index_out 0x51 ; window horizontal end address |
| 582 | 981 movf PRODL,W |
| 604 | 982 rcall TFT_DataWrite ; lower (and tick) |
| 582 | 983 |
| 604 | 984 Index_out 0x20 ; frame memory horizontal address |
| 432 | 985 movf PRODH,W |
| 604 | 986 bra TFT_DataWrite ; lower (and tick) and return |
| 151 | 987 |
|
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changeset
|
988 TFT_box_noflip_V: |
| 582 | 989 ;---- Normal vertical window ---------------------------------------- |
| 990 movff win_top,PRODL | |
| 991 movf win_height,W | |
| 992 addwf PRODL,W | |
| 993 sublw .240 ; 240 - top - height | |
| 604 | 994 movwf PRODH ; first byte |
| 0 | 995 |
| 432 | 996 movf PRODL,W |
| 604 | 997 sublw .239 ; 239 - top |
| 998 movwf PRODL ; --> second byte | |
| 0 | 999 |
| 604 | 1000 Index_out 0x50 ; window horizontal start address |
| 432 | 1001 movf PRODH,W |
| 604 | 1002 rcall TFT_DataWrite ; lower (and tick) |
| 0 | 1003 |
| 604 | 1004 Index_out 0x51 ; window horizontal end address |
| 432 | 1005 movf PRODL,W |
| 604 | 1006 rcall TFT_DataWrite ; lower (and tick) |
| 0 | 1007 |
| 604 | 1008 Index_out 0x20 ; frame memory horizontal address |
| 432 | 1009 movf PRODL,W |
| 604 | 1010 bra TFT_DataWrite ; lower (and tick) and return |
| 582 | 1011 |
| 608 | 1012 TFT_box_write_display2: |
| 1013 movlw 0x06 | |
| 1014 rcall TFT_CmdWrite | |
| 1015 movf PRODH,W | |
| 1016 rcall TFT_DataWrite | |
| 1017 movlw 0x07 | |
| 1018 rcall TFT_CmdWrite | |
| 1019 movf PRODL,W | |
| 1020 rcall TFT_DataWrite | |
| 1021 | |
| 1022 movf win_width+0,W ; right = left + width - 1 | |
| 1023 addwf PRODL,F | |
| 1024 movf win_width+1,W | |
| 1025 addwfc PRODH,F | |
| 1026 decf PRODL,F,A ; decrement result | |
| 1027 btfss STATUS,C | |
| 1028 decf PRODH,F,A | |
| 1029 | |
| 1030 movlw 0x08 | |
| 1031 rcall TFT_CmdWrite | |
| 1032 movf PRODH,W | |
| 1033 rcall TFT_DataWrite | |
| 1034 movlw 0x09 | |
| 1035 rcall TFT_CmdWrite | |
| 1036 movf PRODL,W | |
| 1037 rcall TFT_DataWrite | |
| 1038 | |
| 1039 ;---- Normal vertical window ----------------------------------------- | |
| 1040 ; Output (top) (bottom) | |
| 1041 movff win_top,PRODH ; top --> PRODH (first byte) | |
| 1042 movff win_height,WREG | |
| 1043 addwf PRODH,W | |
| 1044 decf WREG | |
| 1045 movwf PRODL ; top+height-1 --> PRODL (second byte) | |
| 1046 | |
| 1047 movlw 0x02 | |
| 1048 rcall TFT_CmdWrite | |
| 1049 movlw 0x00 | |
| 1050 rcall TFT_DataWrite | |
| 1051 movlw 0x03 | |
| 1052 rcall TFT_CmdWrite | |
| 1053 movf PRODH,W | |
| 1054 rcall TFT_DataWrite | |
| 1055 | |
| 1056 movlw 0x04 | |
| 1057 rcall TFT_CmdWrite | |
| 1058 movlw 0x00 | |
| 1059 rcall TFT_DataWrite | |
| 1060 movlw 0x05 | |
| 1061 rcall TFT_CmdWrite | |
| 1062 movf PRODL,W | |
| 1063 bra TFT_DataWrite ; and return | |
| 1064 | |
| 0 | 1065 |
| 1066 ;============================================================================= | |
| 604 | 1067 ; TFT_frame : draw a frame around current box with current color |
| 0 | 1068 ; Inputs: win_top, win_leftx2, win_height, win_width, win_color1, win_color2 |
| 1069 ; Outputs: (none) | |
| 1070 ; Trashed: WREG, PROD, aa_start:2, aa_end:2 | |
| 1071 | |
| 582 | 1072 global TFT_frame |
| 1073 TFT_frame: | |
| 604 | 1074 movff win_top,save_top ; backup everything |
| 582 | 1075 movff win_height,save_height |
| 1076 movff win_leftx2,save_left | |
| 1077 movff win_width,save_width | |
| 0 | 1078 |
| 582 | 1079 ;---- TOP line ----------------------------------------------------------- |
| 604 | 1080 movlw .1 ; row ~ height = 1 |
| 582 | 1081 movwf win_height |
| 1082 rcall TFT_box | |
| 0 | 1083 |
| 582 | 1084 ;---- BOTTOM line -------------------------------------------------------- |
| 604 | 1085 movff save_top,PRODL ; get back top |
| 1086 movff save_height,WREG ; get back height | |
| 1087 addwf PRODL,W ; top + height | |
| 1088 decf WREG ; top + height - 1 | |
| 1089 movwf win_top ; top + height - 1 --> top | |
| 582 | 1090 rcall TFT_box |
| 0 | 1091 |
| 582 | 1092 ;---- LEFT column -------------------------------------------------------- |
| 604 | 1093 movff save_top,win_top ; restore top/height |
| 582 | 1094 movff save_height,win_height |
| 604 | 1095 movlw .1 ; column ~ width = 1 |
| 582 | 1096 movwf win_width+0 |
| 1097 rcall TFT_box | |
| 1098 | |
| 1099 ;---- RIGHT column ------------------------------------------------------- | |
| 1100 movff save_left,WREG | |
| 1101 movff save_width,PRODL | |
| 1102 addwf PRODL,W | |
| 1103 decf WREG | |
| 1104 movwf win_leftx2 | |
| 1105 rcall TFT_box | |
| 1106 | |
| 1107 ;---- Restore everything ------------------------------------------------- | |
| 1108 movff save_left,win_leftx2 | |
| 1109 movff save_width,win_width | |
| 1110 return | |
| 0 | 1111 |
| 1112 ;============================================================================= | |
| 604 | 1113 ; TFT_box: fills current box with current color |
| 1114 ; Inputs : win_top, win_leftx2, win_height, win_width, win_color1, win_color2 | |
| 0 | 1115 ; Outputs: (none) |
| 1116 ; Trashed: WREG, PROD | |
| 1117 | |
| 582 | 1118 global TFT_box |
| 0 | 1119 TFT_box: |
| 608 | 1120 btfsc screen_type2 |
| 1121 bra TFT_box_display2 | |
| 582 | 1122 ;---- Define Window ------------------------------------------------------ |
| 1123 bcf STATUS,C | |
| 1124 rlcf win_width+0,F | |
| 1125 rlcf win_width+1,F ; x2 | |
| 604 | 1126 rcall TFT_box_write ; setup box |
| 0 | 1127 |
| 582 | 1128 global TFT_box_16bit_win_left |
| 83 | 1129 TFT_box_16bit_win_left: |
| 582 | 1130 bcf STATUS,C |
| 1131 rrcf win_width+1,F ; width /= 2 | |
| 1132 rrcf win_width+0,F | |
| 0 | 1133 |
| 582 | 1134 ;---- Fill Window -------------------------------------------------------- |
| 604 | 1135 Index_out 0x22 ; frame memory data write start |
| 0 | 1136 |
| 604 | 1137 clrf PRODH ; column counter |
| 1138 RS_H ; data | |
| 0 | 1139 |
| 604 | 1140 TFT_box2: ; loop height times |
| 0 | 1141 movff win_height,PRODL |
| 1142 | |
| 582 | 1143 TFT_box3: ; loop width times |
| 436 | 1144 bcf INTCON,GIE |
| 604 | 1145 movff win_color1,PORTA ; upper |
| 1146 movff win_color2,PORTH ; lower | |
| 0 | 1147 WR_L |
| 604 | 1148 WR_H ; tick |
| 582 | 1149 |
| 604 | 1150 ; movff win_color1,PORTA ; upper |
| 1151 ; movff win_color2,PORTH ; lower | |
| 0 | 1152 WR_L |
| 604 | 1153 WR_H ; tick |
| 582 | 1154 bsf INTCON,GIE |
| 1155 decfsz PRODL,F ; row loop finished ? | |
| 604 | 1156 bra TFT_box3 ; NO - continue |
| 0 | 1157 |
| 582 | 1158 incf PRODH,F ; column count ++ |
| 0 | 1159 |
| 582 | 1160 movf win_bargraph,W ; current column == bargraph ? |
| 1161 cpfseq PRODH | |
| 604 | 1162 bra TFT_box4 ; NO - just loop |
| 1163 clrf win_color1 ; Yes - switch to black | |
| 1164 clrf win_color2 ; - ... | |
| 0 | 1165 TFT_box4: |
| 582 | 1166 movf win_width+0,W ; compare ? |
| 1167 xorwf PRODH,W | |
| 604 | 1168 bnz TFT_box2 ; Loop not finished |
| 0 | 1169 |
| 582 | 1170 movlw 0x00 ; NOP, to stop window mode |
| 1171 rcall TFT_CmdWrite | |
| 0 | 1172 |
| 604 | 1173 ; reset bargraph mode... |
| 582 | 1174 setf win_bargraph |
| 1175 return | |
| 608 | 1176 TFT_box_display2: |
| 1177 ;---- Define Window ------------------------------------------------------ | |
| 1178 bcf STATUS,C | |
| 1179 rlcf win_width+0,F | |
| 1180 rlcf win_width+1,F ; x2 | |
| 1181 rcall TFT_box_write ; Setup box | |
| 1182 | |
| 1183 bcf STATUS,C | |
| 1184 rrcf win_width+1,F ; width /= 2 | |
| 1185 rrcf win_width+0,F | |
| 1186 | |
| 1187 movff win_color1,PRODH | |
| 1188 movff win_color2,PRODL | |
| 1189 rcall convert_for_display2 | |
| 1190 ;---- Fill Window -------------------------------------------------------- | |
| 1191 Index_out 0x22 ; Frame Memory Data Write start | |
| 1192 | |
| 1193 clrf PRODH ; Column counter. | |
| 1194 RS_H ; Data | |
| 1195 | |
| 1196 TFT_box2_display2: ; Loop height times | |
| 1197 movff win_height,PRODL | |
| 1198 | |
| 1199 TFT_box3_display2: ; loop width times | |
| 1200 movff win_color5,PORTH | |
| 1201 bcf tft_nwr | |
| 1202 bsf tft_nwr ; Upper | |
| 1203 movff win_color4,PORTH | |
| 1204 bcf tft_nwr | |
| 1205 bsf tft_nwr ; High | |
| 1206 movff win_color3,PORTH | |
| 1207 bcf tft_nwr | |
| 1208 bsf tft_nwr ; Lower | |
| 1209 | |
| 1210 movff win_color5,PORTH | |
| 1211 bcf tft_nwr | |
| 1212 bsf tft_nwr ; Upper | |
| 1213 movff win_color4,PORTH | |
| 1214 bcf tft_nwr | |
| 1215 bsf tft_nwr ; High | |
| 1216 movff win_color3,PORTH | |
| 1217 bcf tft_nwr | |
| 1218 bsf tft_nwr ; Lower | |
| 1219 decfsz PRODL,F ; row loop finished ? | |
| 1220 bra TFT_box3_display2 ; No: continue. | |
| 1221 | |
| 1222 incf PRODH,F ; column count ++ | |
| 1223 | |
| 1224 movf win_bargraph,W ; current column == bargraph ? | |
| 1225 cpfseq PRODH | |
| 1226 bra TFT_box4_display2 ; No: just loop. | |
| 1227 | |
| 1228 ; Yes: switch to black | |
| 1229 clrf win_color5 | |
| 1230 clrf win_color4 | |
| 1231 clrf win_color3 | |
| 1232 TFT_box4_display2: | |
| 1233 movf win_width+0,W | |
| 1234 cpfseq PRODH | |
| 1235 bra TFT_box2_display2 | |
| 1236 | |
| 1237 ; Reset bargraph mode... | |
| 1238 setf win_bargraph | |
| 1239 return | |
| 1240 | |
| 0 | 1241 |
| 1242 ;============================================================================= | |
| 604 | 1243 ; Converts 8 bit RGB b'RRRGGGBB' into 16 bit RGB b'RRRRRGGGGGGBBBBB' |
| 0 | 1244 |
| 582 | 1245 global TFT_set_color |
| 0 | 1246 TFT_set_color: |
| 604 | 1247 movwf tft_temp1 ; get 8 Bit RGB b'RRRGGGBB' |
| 1248 movwf tft_temp2 ; copy | |
| 0 | 1249 |
| 604 | 1250 ; mask bit 7,6,5,4,3,2 |
| 0 | 1251 movlw b'00000011' |
| 1252 andwf tft_temp2,F | |
| 1253 | |
| 1254 movlw b'00000000' | |
| 1255 dcfsnz tft_temp2,F | |
| 1256 movlw b'01010000' | |
| 1257 dcfsnz tft_temp2,F | |
| 1258 movlw b'10100000' | |
| 1259 dcfsnz tft_temp2,F | |
| 1260 movlw b'11111000' | |
| 604 | 1261 movwf tft_temp3 ; blue done |
| 0 | 1262 |
| 604 | 1263 movff tft_temp1,tft_temp2 ; copy |
| 1264 ; mask bit 7,6,5,1,0 | |
| 0 | 1265 movlw b'00011100' |
| 1266 andwf tft_temp2,F | |
| 1267 rrncf tft_temp2,F | |
| 1268 rrncf tft_temp2,F | |
| 1269 | |
| 1270 movlw b'00000000' | |
| 1271 dcfsnz tft_temp2,F | |
| 1272 movlw b'00000100' | |
| 1273 dcfsnz tft_temp2,F | |
| 1274 movlw b'00001000' | |
| 1275 dcfsnz tft_temp2,F | |
| 1276 movlw b'00001100' | |
| 1277 dcfsnz tft_temp2,F | |
| 1278 movlw b'00010000' | |
| 1279 dcfsnz tft_temp2,F | |
| 1280 movlw b'00010100' | |
| 1281 dcfsnz tft_temp2,F | |
| 1282 movlw b'00100000' | |
| 1283 dcfsnz tft_temp2,F | |
| 1284 movlw b'00111111' | |
| 582 | 1285 movwf tft_temp4 |
| 0 | 1286 |
| 1287 rrcf tft_temp4,F | |
| 1288 rrcf tft_temp3,F | |
| 1289 | |
| 1290 rrcf tft_temp4,F | |
| 1291 rrcf tft_temp3,F | |
| 1292 | |
| 1293 rrcf tft_temp4,F | |
| 604 | 1294 rrcf tft_temp3,W ; tft_temp3 (b'GGGBBBBB') done |
| 1295 movwf win_color2 ; set color registers... | |
| 0 | 1296 |
| 604 | 1297 movff tft_temp1,tft_temp2 ; copy |
| 0 | 1298 clrf tft_temp1 |
| 1299 | |
| 1300 rrcf tft_temp4,F | |
| 1301 rrcf tft_temp1,F | |
| 1302 | |
| 1303 rrcf tft_temp4,F | |
| 1304 rrcf tft_temp1,F | |
| 1305 | |
| 1306 rrcf tft_temp4,F | |
| 604 | 1307 rrcf tft_temp1,F ; green done |
| 0 | 1308 |
| 604 | 1309 ; mask bit 4,3,2,1,0 |
| 0 | 1310 movlw b'11100000' |
| 1311 andwf tft_temp2,F | |
| 1312 | |
| 1313 rrncf tft_temp2,F | |
| 1314 rrncf tft_temp2,F | |
| 1315 rrncf tft_temp2,F | |
| 1316 rrncf tft_temp2,F | |
| 1317 rrncf tft_temp2,F | |
| 1318 | |
| 1319 movlw b'00000000' | |
| 1320 dcfsnz tft_temp2,F | |
| 1321 movlw b'00000100' | |
| 1322 dcfsnz tft_temp2,F | |
| 1323 movlw b'00001000' | |
| 1324 dcfsnz tft_temp2,F | |
| 1325 movlw b'00001100' | |
| 1326 dcfsnz tft_temp2,F | |
| 1327 movlw b'00010000' | |
| 1328 dcfsnz tft_temp2,F | |
| 1329 movlw b'00010100' | |
| 1330 dcfsnz tft_temp2,F | |
| 1331 movlw b'00100000' | |
| 1332 dcfsnz tft_temp2,F | |
| 1333 movlw b'00111111' | |
| 582 | 1334 movwf tft_temp4 |
| 0 | 1335 |
| 1336 rrcf tft_temp4,F | |
| 1337 rrcf tft_temp1,F | |
| 1338 | |
| 1339 rrcf tft_temp4,F | |
| 604 | 1340 rrcf tft_temp1,F |
| 0 | 1341 |
| 1342 rrcf tft_temp4,F | |
| 1343 rrcf tft_temp1,F | |
| 1344 | |
| 1345 rrcf tft_temp4,F | |
| 1346 rrcf tft_temp1,F | |
| 1347 | |
| 1348 rrcf tft_temp4,F | |
| 604 | 1349 rrcf tft_temp1,W ; red done |
| 1350 movwf win_color1 ; set color registers | |
| 0 | 1351 return |
| 608 | 1352 |
| 1353 global convert_for_display2 | |
| 1354 convert_for_display2: ; Convert 16Bit RGB b'RRRRRGGG GGGBBBBB' into 24Bit RGB b'RRRRRR00 GGGGGG00 BBBBBB00' | |
| 1355 ; PRODH PRODL win_color5 win_color4 win_color3 | |
| 1356 ; Red | |
| 1357 movff PRODH,win_color5 ; = RRRRRGGG | |
| 1358 bcf win_color5,2 ; = RRRRR0GG | |
| 1359 btfsc win_color5,7 | |
| 1360 bsf win_color5,2 ; = RRRRR1GG ; Lower two bits ignored from screen! | |
| 1361 ; Blue | |
| 1362 movff PRODL,win_color3 | |
| 1363 rrcf win_color3,F ; = UGGGBBBB (And the LSB-Blue in Carry) | |
| 1364 swapf win_color3,F ; = BBBBUGGG | |
| 1365 bcf win_color3,3 ; = BBBB0GGG | |
| 1366 btfsc STATUS,C | |
| 1367 bsf win_color3,3 ; = BBBB1GGG | |
| 1368 bcf win_color3,2 ; = BBBBB0GG | |
| 1369 btfsc win_color3,7 | |
| 1370 bsf win_color3,2 ; = BBBBB1GG | |
| 1371 ; Green | |
| 1372 rrcf PRODH,F | |
| 1373 rrcf PRODL,F | |
| 1374 rrcf PRODH,F | |
| 1375 rrcf PRODL,F | |
| 1376 rrcf PRODH,F | |
| 1377 rrcf PRODL,F ; = GGGGGGBB ; Lower two bits ignored from screen! | |
| 1378 movff PRODL,win_color4 | |
| 1379 return | |
| 1380 | |
| 0 | 1381 |
| 1382 ;============================================================================= | |
| 1383 ; Dump screen contents to the UART | |
| 1384 | |
| 604 | 1385 IFDEF _screendump |
| 1386 | |
| 1387 global TFT_dump_screen_check | |
| 582 | 1388 global TFT_dump_screen |
| 604 | 1389 TFT_dump_screen_check: |
| 1390 btfss vusb_in ; USB (still) plugged in? | |
| 1391 bcf enable_screen_dumps ; NO - clear flag | |
| 1392 call rs232_get_byte ; try to read data from RS232 | |
| 1393 btfsc rs232_receive_overflow ; anything received? | |
| 1394 return ; NO - return | |
| 1395 movlw "l" ; YES - load coding for screendump command | |
| 1396 cpfseq RCREG1 ; screendump command received? | |
| 1397 return ; NO - return | |
| 1398 TFT_dump_screen: ; YES | |
| 582 | 1399 bsf no_sensor_int |
| 1400 movlw 'l' | |
| 604 | 1401 movwf TXREG ; send command echo |
| 582 | 1402 call rs232_wait_tx ; wait for UART |
| 604 | 1403 |
| 582 | 1404 ;---- Send DISPLAY box command for the full screen window ------------------- |
| 604 | 1405 Index_out 0x50 ; window horizontal start address |
| 582 | 1406 Parameter_out 0x00, 0x00 ; 0-239 |
| 604 | 1407 Index_out 0x51 ; window horizontal end address |
| 582 | 1408 Parameter_out 0x00, 0xEF ; 0-239 |
| 604 | 1409 Index_out 0x52 ; window vertical start address |
| 582 | 1410 Parameter_out 0x00, 0x00 ; 0-319 |
| 604 | 1411 Index_out 0x53 ; window vertical end address |
| 582 | 1412 Parameter_out 0x01, 0x3F ; 0-319 |
| 0 | 1413 |
| 582 | 1414 clrf ds_column |
| 1415 rcall dump_screen_pixel_reset | |
| 0 | 1416 dump_screen_1: |
| 582 | 1417 btg LEDr ; LED activity toggle |
| 1418 ; Dump even column | |
| 604 | 1419 movlw .240 ; 240 lines, once |
| 582 | 1420 movwf ds_line |
| 0 | 1421 dump_screen_2: |
| 604 | 1422 Index_out 0x20 ; frame memory horizontal address |
| 582 | 1423 movff ds_line,WREG ; d'0' ... d'239' |
| 604 | 1424 mullw .1 ; copy row to PRODH:L |
| 582 | 1425 rcall TFT_DataWrite_PROD |
| 0 | 1426 |
| 604 | 1427 movff ds_column,WREG ; Init X position |
| 582 | 1428 mullw 2 |
| 604 | 1429 rcall pixel_write_col320 ; start address vertical (.0 - .319) |
| 0 | 1430 |
| 582 | 1431 rcall TFT_DataRead_PROD ; read pixel |
| 1432 rcall dump_screen_pixel | |
| 0 | 1433 |
| 582 | 1434 decfsz ds_line,F |
| 1435 bra dump_screen_2 | |
| 1436 rcall dump_screen_pixel_flush | |
| 0 | 1437 |
| 582 | 1438 ; Dump odd column |
| 604 | 1439 movlw .240 ; 240 lines, twice |
| 582 | 1440 movwf ds_line |
| 0 | 1441 dump_screen_3: |
| 604 | 1442 Index_out 0x20 ; frame memory horizontal address |
| 582 | 1443 movff ds_line,WREG ; d'0' ... d'239' |
| 604 | 1444 mullw 1 ; copy row to PRODH:L |
| 582 | 1445 rcall TFT_DataWrite_PROD |
| 0 | 1446 |
| 604 | 1447 movff ds_column,WREG ; init X position |
| 582 | 1448 mullw 2 |
| 1449 movlw .1 | |
| 1450 addwf PRODL,F | |
| 1451 movlw 0 | |
| 1452 addwfc PRODH,F ; +1 | |
| 604 | 1453 rcall pixel_write_col320 ; start address vertical (.0 - .319) |
| 0 | 1454 |
| 582 | 1455 rcall TFT_DataRead_PROD ; read pixel |
| 1456 rcall dump_screen_pixel | |
| 0 | 1457 |
| 582 | 1458 decfsz ds_line,F |
| 1459 bra dump_screen_3 | |
| 1460 rcall dump_screen_pixel_flush | |
| 0 | 1461 |
| 582 | 1462 incf ds_column,F |
| 1463 movlw .160 | |
| 1464 cpfseq ds_column | |
| 1465 bra dump_screen_1 | |
| 0 | 1466 |
| 582 | 1467 bcf no_sensor_int |
| 604 | 1468 clrf RCREG1 ; clear receive buffer |
| 1469 bcf RCSTA1,CREN ; clear receiver status | |
| 582 | 1470 bsf RCSTA1,CREN |
| 604 | 1471 bsf enable_screen_dumps ; =1: Ignore vin_usb, wait for "l" command (screen dump) |
| 582 | 1472 return |
| 0 | 1473 |
| 604 | 1474 ENDIF |
| 1475 | |
| 0 | 1476 |
| 1477 ;============================================================================= | |
| 1478 ; Pixel compression | |
| 1479 ; | |
| 604 | 1480 ; Input : PRODH:L = pixel |
| 0 | 1481 ; Output: Compressed stream on output. |
| 1482 ; Compressed format: | |
| 604 | 1483 ; 0ccccccc : BLACK pixel, repeated ccccccc+1 times (1..128) |
| 1484 ; 11cccccc : WHITE pixel, repeated cccccc+1 times (1.. 64) | |
| 1485 ; 10cccccc HIGH LOW : color pixel (H:L) repeated ccccc+1 times (1.. 64) | |
| 1486 | |
| 1487 IFDEF _screendump | |
| 582 | 1488 |
| 0 | 1489 dump_screen_pixel: |
| 604 | 1490 movf PRODH,W ; compare pixel-high |
| 582 | 1491 xorwf ds_pixel+1,W |
| 604 | 1492 bnz dump_screen_pixel_1 ; different -> dump |
| 0 | 1493 |
| 604 | 1494 movf PRODL,W ; compare pixel-low |
| 582 | 1495 xorwf ds_pixel+0,W |
| 604 | 1496 bnz dump_screen_pixel_1 ; different -> dump |
| 0 | 1497 |
| 604 | 1498 incf ds_count,F ; same color: just increment |
| 582 | 1499 return |
| 0 | 1500 |
| 604 | 1501 dump_screen_pixel_1: ; send (pixel,count) tuple |
| 1502 movf ds_count,W ; is count zero ? | |
| 1503 bz dump_screen_pixel_2 ; YES - skip sending | |
| 0 | 1504 |
| 604 | 1505 movf ds_pixel+1,W ; is this a BLACK pixel ? |
| 582 | 1506 iorwf ds_pixel+0,W |
| 604 | 1507 bz dump_screen_pix_black ; YES |
| 0 | 1508 |
| 604 | 1509 movf ds_pixel+1,W ; is this a white pixel ? |
| 582 | 1510 andwf ds_pixel+0,W |
| 1511 incf WREG | |
| 604 | 1512 bz dump_screen_pix_white ; YES |
| 0 | 1513 |
| 582 | 1514 ; No: write the pixel itself... |
| 604 | 1515 movlw .64 ; max color pixel on a single byte |
| 1516 cpfsgt ds_count ; skip if count > 64 | |
| 582 | 1517 movf ds_count,W ; W <- min(64,count) |
| 1518 subwf ds_count,F ; ds_count <- ds_count-W | |
| 604 | 1519 decf WREG ; save as 0..63 |
| 1520 iorlw b'10000000' ; mark as a color pixel | |
| 0 | 1521 |
| 582 | 1522 movwf TXREG |
| 1523 call rs232_wait_tx ; wait for UART | |
| 1524 movff ds_pixel+1,TXREG | |
| 1525 call rs232_wait_tx ; wait for UART | |
| 1526 movff ds_pixel+0,TXREG | |
| 1527 call rs232_wait_tx ; wait for UART | |
| 1528 bra dump_screen_pixel_1 | |
| 0 | 1529 |
| 1530 dump_screen_pixel_2: | |
| 604 | 1531 movff PRODH,ds_pixel+1 ; save new pixel color |
| 582 | 1532 movff PRODL,ds_pixel+0 |
| 1533 movlw 1 | |
| 604 | 1534 movwf ds_count ; and set count=1 |
| 582 | 1535 return |
| 0 | 1536 |
| 1537 dump_screen_pix_black: | |
| 604 | 1538 movlw .128 ; max black pixel on a single byte |
| 1539 cpfsgt ds_count ; skip if count > 128 | |
| 582 | 1540 movf ds_count,W ; W <- min(128,count) |
| 1541 subwf ds_count,F ; ds_count <- ds_count-W | |
| 604 | 1542 decf WREG ; save as 0..127 |
| 0 | 1543 dump_screen_pix_3: |
| 582 | 1544 movwf TXREG |
| 1545 call rs232_wait_tx | |
| 604 | 1546 bra dump_screen_pixel_1 ; more to dump ? |
| 0 | 1547 |
| 1548 dump_screen_pix_white: | |
| 604 | 1549 movlw .64 ; max white pixel on a single byte |
| 1550 cpfsgt ds_count ; skip if count > 64 | |
| 582 | 1551 movf ds_count,W ; W <- min(64,count) |
| 1552 subwf ds_count,F ; ds_count <- ds_count-W | |
| 1553 decf WREG ; Save as 0..63 | |
| 604 | 1554 iorlw b'11000000' ; mark as a compressed white |
| 582 | 1555 bra dump_screen_pix_3 |
| 0 | 1556 |
| 1557 dump_screen_pixel_flush: | |
| 582 | 1558 clrf PRODH |
| 1559 clrf PRODL | |
| 604 | 1560 rcall dump_screen_pixel_1 ; send it |
| 0 | 1561 dump_screen_pixel_reset: |
| 604 | 1562 clrf ds_count ; clear count |
| 582 | 1563 return |
| 0 | 1564 |
| 604 | 1565 ENDIF |
| 1566 | |
| 582 | 1567 END |