| 1 | /* |
| 2 | * TeensyTAS, TAS input player for MegaDrive |
| 3 | * Copyright (c) 2014 notaz |
| 4 | * |
| 5 | * Permission is hereby granted, free of charge, to any person obtaining |
| 6 | * a copy of this software and associated documentation files (the |
| 7 | * "Software"), to deal in the Software without restriction, including |
| 8 | * without limitation the rights to use, copy, modify, merge, publish, |
| 9 | * distribute, sublicense, and/or sell copies of the Software, and to |
| 10 | * permit persons to whom the Software is furnished to do so, subject to |
| 11 | * the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be |
| 14 | * included in all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 17 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 19 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 20 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 21 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 22 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 23 | * SOFTWARE. |
| 24 | */ |
| 25 | |
| 26 | #include <stdint.h> |
| 27 | #include <stdio.h> |
| 28 | #include <string.h> |
| 29 | #include "teensy3/core_pins.h" |
| 30 | #include "teensy3/usb_seremu.h" |
| 31 | #include "teensy3/usb_rawhid.h" |
| 32 | #include "pkts.h" |
| 33 | |
| 34 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) |
| 35 | |
| 36 | #define noinline __attribute__((noinline)) |
| 37 | |
| 38 | // use power of 2 |
| 39 | #define STREAM_BUF_SIZE 512 |
| 40 | #define STREAM_BUF_MASK (512 - 1) |
| 41 | |
| 42 | /* ?0SA 00DU, ?1CB RLDU */ |
| 43 | #define STREAM_EL_SZ 2 |
| 44 | |
| 45 | static struct { |
| 46 | uint8_t stream_to[2][STREAM_BUF_SIZE][STREAM_EL_SZ]; |
| 47 | uint8_t stream_from[STREAM_BUF_SIZE][STREAM_EL_SZ]; |
| 48 | struct { |
| 49 | union { |
| 50 | uint8_t fixed_state[4]; |
| 51 | uint32_t fixed_state32; |
| 52 | }; |
| 53 | union { |
| 54 | uint8_t pending_state[4]; |
| 55 | uint32_t pending_state32; |
| 56 | }; |
| 57 | } pl[2]; |
| 58 | uint32_t stream_enable_to:1; |
| 59 | uint32_t stream_enable_from:1; |
| 60 | uint32_t stream_started:1; |
| 61 | uint32_t stream_ended:1; |
| 62 | uint32_t inc_mode:2; |
| 63 | uint32_t use_pending:1; |
| 64 | uint32_t frame_cnt; |
| 65 | uint32_t edge_cnt; |
| 66 | struct { |
| 67 | uint32_t i; |
| 68 | uint32_t o; |
| 69 | } pos_to_p[2], pos_from; |
| 70 | } g; |
| 71 | |
| 72 | ssize_t _write(int fd, const void *buf, size_t nbyte) |
| 73 | { |
| 74 | char tbuf[64]; |
| 75 | int ret; |
| 76 | |
| 77 | if (fd != 1 && fd != 2) { |
| 78 | snprintf(tbuf, sizeof(tbuf), "write to fd %d\n", fd); |
| 79 | usb_seremu_write(tbuf, strlen(tbuf)); |
| 80 | } |
| 81 | |
| 82 | ret = usb_seremu_write(buf, nbyte); |
| 83 | return ret < 0 ? ret : nbyte; |
| 84 | } |
| 85 | |
| 86 | void yield(void) |
| 87 | { |
| 88 | } |
| 89 | |
| 90 | static noinline void choose_isrs_idle(void); |
| 91 | |
| 92 | /* player1 TH */ |
| 93 | #define PL1_ISFR PORTD_ISFR |
| 94 | #define PL1_TH() ((CORE_PIN21_PINREG >> CORE_PIN21_BIT) & 1) |
| 95 | |
| 96 | static void pl1th_isr_fixed(void) |
| 97 | { |
| 98 | uint32_t isfr, th; |
| 99 | |
| 100 | isfr = PL1_ISFR; |
| 101 | PL1_ISFR = isfr; |
| 102 | th = PL1_TH(); |
| 103 | |
| 104 | GPIOD_PDOR = g.pl[0].fixed_state[th]; |
| 105 | g.edge_cnt++; |
| 106 | } |
| 107 | |
| 108 | static noinline void do_to_step(void) |
| 109 | { |
| 110 | g.frame_cnt++; |
| 111 | |
| 112 | g.pos_to_p[0].o = (g.pos_to_p[0].o + 1) & STREAM_BUF_MASK; |
| 113 | if (g.pos_to_p[0].o == g.pos_to_p[0].i) |
| 114 | // done |
| 115 | choose_isrs_idle(); |
| 116 | } |
| 117 | |
| 118 | static void pl1th_isr_do_to_inc(void) |
| 119 | { |
| 120 | uint32_t isfr, th; |
| 121 | |
| 122 | isfr = PL1_ISFR; |
| 123 | PL1_ISFR = isfr; |
| 124 | th = PL1_TH(); |
| 125 | |
| 126 | GPIOD_PDOR = g.stream_to[0][g.pos_to_p[0].o][th]; |
| 127 | if (th) |
| 128 | do_to_step(); |
| 129 | } |
| 130 | |
| 131 | static void pl1th_isr_do_to(void) |
| 132 | { |
| 133 | uint32_t isfr, th; |
| 134 | |
| 135 | isfr = PL1_ISFR; |
| 136 | PL1_ISFR = isfr; |
| 137 | th = PL1_TH(); |
| 138 | |
| 139 | GPIOD_PDOR = g.stream_to[0][g.pos_to_p[0].o][th]; |
| 140 | g.edge_cnt++; |
| 141 | } |
| 142 | |
| 143 | /* player2 TH */ |
| 144 | #define PL2_ISFR PORTC_ISFR |
| 145 | #define PL2_TH() ((CORE_PIN15_PINREG >> CORE_PIN15_BIT) & 1) |
| 146 | #define PL2_ADJ(x) ((x) | ((x) << 12)) |
| 147 | |
| 148 | static void pl2th_isr_fixed(void) |
| 149 | { |
| 150 | uint32_t isfr, th, v; |
| 151 | |
| 152 | isfr = PL2_ISFR; |
| 153 | PL2_ISFR = isfr; |
| 154 | th = PL2_TH(); |
| 155 | |
| 156 | v = g.pl[1].fixed_state[th]; |
| 157 | GPIOB_PDOR = PL2_ADJ(v); |
| 158 | } |
| 159 | |
| 160 | static void pl2th_isr_do_to(void) |
| 161 | { |
| 162 | uint32_t isfr, th, v; |
| 163 | |
| 164 | isfr = PL2_ISFR; |
| 165 | PL2_ISFR = isfr; |
| 166 | th = PL2_TH(); |
| 167 | |
| 168 | v = g.stream_to[1][g.pos_to_p[0].o][th]; |
| 169 | GPIOB_PDOR = PL2_ADJ(v); |
| 170 | |
| 171 | g.pos_to_p[1].o = g.pos_to_p[0].o; |
| 172 | } |
| 173 | |
| 174 | static void pl2th_isr_do_to_inc_pl1(void) |
| 175 | { |
| 176 | uint32_t isfr, th, v; |
| 177 | |
| 178 | isfr = PL2_ISFR; |
| 179 | PL2_ISFR = isfr; |
| 180 | th = PL2_TH(); |
| 181 | |
| 182 | v = g.stream_to[1][g.pos_to_p[1].o][th]; |
| 183 | GPIOB_PDOR = PL2_ADJ(v); |
| 184 | if (th) { |
| 185 | do_to_step(); |
| 186 | g.pos_to_p[1].o = g.pos_to_p[0].o; |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | /* vsync handler */ |
| 191 | #define VSYNC_ISFR PORTC_ISFR |
| 192 | |
| 193 | static void vsync_isr_nop(void) |
| 194 | { |
| 195 | uint32_t isfr; |
| 196 | |
| 197 | isfr = VSYNC_ISFR; |
| 198 | VSYNC_ISFR = isfr; |
| 199 | } |
| 200 | |
| 201 | // /vsync starts at line 235/259 (ntsc/pal), just as vcounter jumps back |
| 202 | // we care when it comes out (/vsync goes high) after 3 lines at 238/262 |
| 203 | static void vsync_isr_frameinc(void) |
| 204 | { |
| 205 | uint32_t isfr; |
| 206 | |
| 207 | isfr = VSYNC_ISFR; |
| 208 | VSYNC_ISFR = isfr; |
| 209 | |
| 210 | g.pos_to_p[0].o = (g.pos_to_p[0].o + 1) & STREAM_BUF_MASK; |
| 211 | g.pos_to_p[1].o = g.pos_to_p[0].o; |
| 212 | |
| 213 | if (g.pos_to_p[0].o == g.pos_to_p[0].i) |
| 214 | choose_isrs_idle(); |
| 215 | g.frame_cnt++; |
| 216 | } |
| 217 | |
| 218 | /* "recording" data */ |
| 219 | static noinline void do_from_step(void) |
| 220 | { |
| 221 | uint32_t s; |
| 222 | |
| 223 | // should hopefully give atomic fixed_state read.. |
| 224 | s = g.pl[0].fixed_state32; |
| 225 | g.pl[0].fixed_state32 = g.pl[0].pending_state32; |
| 226 | g.stream_from[g.pos_from.i][0] = s; |
| 227 | g.stream_from[g.pos_from.i][1] = s >> 8; |
| 228 | g.pos_from.i = (g.pos_from.i + 1) & STREAM_BUF_MASK; |
| 229 | } |
| 230 | |
| 231 | static void pl1th_isr_fixed_do_from(void) |
| 232 | { |
| 233 | uint32_t isfr, th; |
| 234 | |
| 235 | isfr = PL1_ISFR; |
| 236 | PL1_ISFR = isfr; |
| 237 | th = PL1_TH(); |
| 238 | |
| 239 | GPIOD_PDOR = g.pl[0].fixed_state[th]; |
| 240 | if (th) |
| 241 | do_from_step(); |
| 242 | g.edge_cnt++; |
| 243 | } |
| 244 | |
| 245 | static void vsync_isr_frameinc_do_from(void) |
| 246 | { |
| 247 | uint32_t isfr; |
| 248 | |
| 249 | isfr = VSYNC_ISFR; |
| 250 | VSYNC_ISFR = isfr; |
| 251 | |
| 252 | do_from_step(); |
| 253 | g.frame_cnt++; |
| 254 | } |
| 255 | |
| 256 | /* * */ |
| 257 | static void choose_isrs(void) |
| 258 | { |
| 259 | void (*pl1th_handler)(void) = pl1th_isr_fixed; |
| 260 | void (*pl2th_handler)(void) = pl2th_isr_fixed; |
| 261 | void (*vsync_handler)(void) = vsync_isr_nop; |
| 262 | |
| 263 | if (g.stream_enable_to) { |
| 264 | switch (g.inc_mode) { |
| 265 | case INC_MODE_VSYNC: |
| 266 | pl1th_handler = pl1th_isr_do_to; |
| 267 | pl2th_handler = pl2th_isr_do_to; |
| 268 | vsync_handler = vsync_isr_frameinc; |
| 269 | break; |
| 270 | case INC_MODE_SHARED_PL1: |
| 271 | pl1th_handler = pl1th_isr_do_to_inc; |
| 272 | pl2th_handler = pl2th_isr_do_to; |
| 273 | break; |
| 274 | case INC_MODE_SHARED_PL2: |
| 275 | pl1th_handler = pl1th_isr_do_to; |
| 276 | pl2th_handler = pl2th_isr_do_to_inc_pl1; |
| 277 | break; |
| 278 | } |
| 279 | } |
| 280 | else if (g.stream_enable_from) { |
| 281 | g.use_pending = 1; |
| 282 | switch (g.inc_mode) { |
| 283 | case INC_MODE_VSYNC: |
| 284 | vsync_handler = vsync_isr_frameinc_do_from; |
| 285 | break; |
| 286 | case INC_MODE_SHARED_PL1: |
| 287 | pl1th_handler = pl1th_isr_fixed_do_from; |
| 288 | break; |
| 289 | case INC_MODE_SHARED_PL2: |
| 290 | /* TODO */ |
| 291 | break; |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | attachInterruptVector(IRQ_PORTD, pl1th_handler); |
| 296 | attachInterruptVector(IRQ_PORTC, pl2th_handler); |
| 297 | attachInterruptVector(IRQ_PORTA, vsync_handler); |
| 298 | } |
| 299 | |
| 300 | static noinline void choose_isrs_idle(void) |
| 301 | { |
| 302 | attachInterruptVector(IRQ_PORTD, pl1th_isr_fixed); |
| 303 | attachInterruptVector(IRQ_PORTC, pl2th_isr_fixed); |
| 304 | attachInterruptVector(IRQ_PORTA, vsync_isr_nop); |
| 305 | } |
| 306 | |
| 307 | static void udelay(uint32_t us) |
| 308 | { |
| 309 | uint32_t start = micros(); |
| 310 | |
| 311 | while ((micros() - start) < us) { |
| 312 | asm volatile("nop; nop; nop; nop"); |
| 313 | yield(); |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | static void do_start_seq(void) |
| 318 | { |
| 319 | uint32_t edge_cnt_last; |
| 320 | uint32_t edge_cnt; |
| 321 | uint32_t start, t1, t2; |
| 322 | int tout; |
| 323 | |
| 324 | start = micros(); |
| 325 | edge_cnt = g.edge_cnt; |
| 326 | |
| 327 | /* magic value */ |
| 328 | g.pl[0].fixed_state[0] = |
| 329 | g.pl[0].fixed_state[1] = 0x25; |
| 330 | |
| 331 | for (tout = 10000; tout > 0; tout--) { |
| 332 | edge_cnt_last = edge_cnt; |
| 333 | udelay(100); |
| 334 | edge_cnt = g.edge_cnt; |
| 335 | |
| 336 | if (edge_cnt != edge_cnt_last) |
| 337 | continue; |
| 338 | if (!PL1_TH()) |
| 339 | break; |
| 340 | } |
| 341 | |
| 342 | g.pl[0].fixed_state[0] = 0x33; |
| 343 | g.pl[0].fixed_state[1] = 0x3f; |
| 344 | GPIOD_PDOR = 0x33; |
| 345 | |
| 346 | t1 = micros(); |
| 347 | if (tout == 0) { |
| 348 | printf("start_seq timeout1, t=%u\n", t1 - start); |
| 349 | return; |
| 350 | } |
| 351 | |
| 352 | for (tout = 100000; tout > 0; tout--) { |
| 353 | udelay(1); |
| 354 | |
| 355 | if (PL1_TH()) |
| 356 | break; |
| 357 | } |
| 358 | |
| 359 | t2 = micros(); |
| 360 | if (tout == 0) { |
| 361 | printf("start_seq timeout2, t1=%u, t2=%u\n", |
| 362 | t1 - start, t2 - t1); |
| 363 | return; |
| 364 | } |
| 365 | |
| 366 | //printf(" t1=%u, t2=%u\n", t1 - start, t2 - t1); |
| 367 | |
| 368 | if (g.stream_started) { |
| 369 | printf("got start_seq when already started\n"); |
| 370 | return; |
| 371 | } |
| 372 | |
| 373 | if (!g.stream_enable_to && !g.stream_enable_from) { |
| 374 | printf("got start_seq, without enable from USB\n"); |
| 375 | return; |
| 376 | } |
| 377 | |
| 378 | if (g.stream_enable_to && g.pos_to_p[0].i == g.pos_to_p[0].o) { |
| 379 | printf("got start_seq while stream_to is empty\n"); |
| 380 | return; |
| 381 | } |
| 382 | |
| 383 | if (g.stream_enable_from && g.pos_from.i != g.pos_from.o) { |
| 384 | printf("got start_seq while stream_from is not empty\n"); |
| 385 | return; |
| 386 | } |
| 387 | |
| 388 | __disable_irq(); |
| 389 | choose_isrs(); |
| 390 | g.stream_started = 1; |
| 391 | __enable_irq(); |
| 392 | } |
| 393 | |
| 394 | // callers must disable IRQs |
| 395 | static void clear_state(void) |
| 396 | { |
| 397 | int i; |
| 398 | |
| 399 | g.stream_enable_to = 0; |
| 400 | g.stream_enable_from = 0; |
| 401 | g.stream_started = 0; |
| 402 | g.stream_ended = 0; |
| 403 | g.inc_mode = INC_MODE_VSYNC; |
| 404 | g.use_pending = 0; |
| 405 | for (i = 0; i < ARRAY_SIZE(g.pos_to_p); i++) |
| 406 | g.pos_to_p[i].i = g.pos_to_p[i].o = 0; |
| 407 | g.pos_from.i = g.pos_from.o = 0; |
| 408 | g.frame_cnt = 0; |
| 409 | choose_isrs_idle(); |
| 410 | } |
| 411 | |
| 412 | static int get_space_to(int p) |
| 413 | { |
| 414 | return STREAM_BUF_SIZE - ((g.pos_to_p[p].i - g.pos_to_p[p].o) |
| 415 | & STREAM_BUF_MASK); |
| 416 | } |
| 417 | |
| 418 | static int get_used_from(void) |
| 419 | { |
| 420 | return (g.pos_from.i - g.pos_from.o) & STREAM_BUF_MASK; |
| 421 | } |
| 422 | |
| 423 | static void do_usb(void *buf) |
| 424 | { |
| 425 | struct tas_pkt *pkt = buf; |
| 426 | uint32_t pos_to_i, i, p; |
| 427 | int space; |
| 428 | |
| 429 | switch (pkt->type) { |
| 430 | case PKT_FIXED_STATE: |
| 431 | memcpy(&i, pkt->data, sizeof(i)); |
| 432 | if (g.use_pending) |
| 433 | g.pl[0].pending_state32 = i; |
| 434 | else |
| 435 | g.pl[0].fixed_state32 = i; |
| 436 | break; |
| 437 | case PKT_STREAM_ENABLE: |
| 438 | __disable_irq(); |
| 439 | clear_state(); |
| 440 | /* wait for start from MD */ |
| 441 | g.stream_enable_to = pkt->enable.stream_to; |
| 442 | g.stream_enable_from = pkt->enable.stream_from; |
| 443 | g.inc_mode = pkt->enable.inc_mode; |
| 444 | if (pkt->enable.no_start_seq) { |
| 445 | GPIOD_PDOR = 0x3f; |
| 446 | choose_isrs(); |
| 447 | g.stream_started = 1; |
| 448 | } |
| 449 | __enable_irq(); |
| 450 | break; |
| 451 | case PKT_STREAM_ABORT: |
| 452 | __disable_irq(); |
| 453 | clear_state(); |
| 454 | __enable_irq(); |
| 455 | break; |
| 456 | case PKT_STREAM_END: |
| 457 | g.stream_ended = 1; |
| 458 | printf("end of stream\n"); |
| 459 | break; |
| 460 | case PKT_STREAM_DATA_TO_P1: |
| 461 | case PKT_STREAM_DATA_TO_P2: |
| 462 | p = pkt->type == PKT_STREAM_DATA_TO_P1 ? 0 : 1; |
| 463 | pos_to_i = g.pos_to_p[p].i; |
| 464 | space = get_space_to(p); |
| 465 | if (space <= pkt->size / STREAM_EL_SZ) { |
| 466 | printf("got data pkt while space=%d\n", space); |
| 467 | return; |
| 468 | } |
| 469 | for (i = 0; i < pkt->size / STREAM_EL_SZ; i++) { |
| 470 | memcpy(&g.stream_to[p][pos_to_i++], |
| 471 | pkt->data + i * STREAM_EL_SZ, |
| 472 | STREAM_EL_SZ); |
| 473 | pos_to_i &= STREAM_BUF_MASK; |
| 474 | } |
| 475 | g.pos_to_p[p].i = pos_to_i; |
| 476 | break; |
| 477 | default: |
| 478 | printf("got unknown pkt type: %04x\n", pkt->type); |
| 479 | break; |
| 480 | } |
| 481 | } |
| 482 | |
| 483 | static void check_get_data(int p) |
| 484 | { |
| 485 | struct tas_pkt pkt; |
| 486 | uint8_t buf[64]; |
| 487 | int ret; |
| 488 | |
| 489 | if (get_space_to(p) <= sizeof(pkt.data) / STREAM_EL_SZ) |
| 490 | return; |
| 491 | |
| 492 | if (g.pos_to_p[p].i == g.pos_to_p[p].o && g.frame_cnt != 0) { |
| 493 | printf("underflow detected\n"); |
| 494 | g.stream_enable_to = 0; |
| 495 | return; |
| 496 | } |
| 497 | |
| 498 | pkt.type = PKT_STREAM_REQ; |
| 499 | pkt.req.frame = g.frame_cnt; |
| 500 | pkt.req.is_p2 = p; |
| 501 | |
| 502 | ret = usb_rawhid_send(&pkt, 1000); |
| 503 | if (ret != sizeof(pkt)) { |
| 504 | printf("send STREAM_REQ/%d: %d\n", p, ret); |
| 505 | return; |
| 506 | } |
| 507 | |
| 508 | ret = usb_rawhid_recv(buf, 1000); |
| 509 | if (ret != 64) |
| 510 | printf("usb_rawhid_recv/s: %d\n", ret); |
| 511 | else |
| 512 | do_usb(buf); |
| 513 | } |
| 514 | |
| 515 | int main(void) |
| 516 | { |
| 517 | uint32_t led_time = 0; |
| 518 | uint32_t scheck_time = 0; |
| 519 | uint32_t edge_cnt_last; |
| 520 | uint32_t edge_cnt; |
| 521 | uint8_t buf[64]; |
| 522 | int i, ret; |
| 523 | |
| 524 | delay(1000); // wait for usb.. |
| 525 | |
| 526 | /* ?0SA 00DU, ?1CB RLDU */ |
| 527 | for (i = 0; i < 2; i++) { |
| 528 | g.pl[i].fixed_state[0] = 0x33; |
| 529 | g.pl[i].fixed_state[1] = 0x3f; |
| 530 | } |
| 531 | |
| 532 | printf("starting, rawhid: %d\n", usb_rawhid_available()); |
| 533 | |
| 534 | choose_isrs_idle(); |
| 535 | |
| 536 | // md pin th tr tl r l d u vsync th tr tl r l d u |
| 537 | // 7 9 6 4 3 2 1 7 9 6 4 3 2 1 |
| 538 | // md bit* 6 5 4 3 2 1 0 6 5 4 3 2 1 0 |
| 539 | // t bit d6 d5 d4 d3 d2 d1 d0 a12 c0 b17 b16 b3 b2 b1 b0 |
| 540 | // t pin 21 20 6 8 7 14 2 3 15 1 0 18 19 17 16 |
| 541 | // * - note: tl/tr mixed in most docs |
| 542 | |
| 543 | // player1 |
| 544 | pinMode(21, INPUT); |
| 545 | attachInterrupt(21, pl1th_isr_fixed, CHANGE); |
| 546 | NVIC_SET_PRIORITY(IRQ_PORTD, 0); |
| 547 | |
| 548 | pinMode( 2, OUTPUT); |
| 549 | pinMode(14, OUTPUT); |
| 550 | pinMode( 7, OUTPUT); |
| 551 | pinMode( 8, OUTPUT); |
| 552 | pinMode( 6, OUTPUT); |
| 553 | pinMode(20, OUTPUT); |
| 554 | |
| 555 | // player2 |
| 556 | pinMode(15, INPUT); |
| 557 | attachInterrupt(15, pl1th_isr_fixed, CHANGE); |
| 558 | NVIC_SET_PRIORITY(IRQ_PORTC, 0); |
| 559 | |
| 560 | pinMode(16, OUTPUT); |
| 561 | pinMode(17, OUTPUT); |
| 562 | pinMode(19, OUTPUT); |
| 563 | pinMode(18, OUTPUT); |
| 564 | pinMode( 0, OUTPUT); |
| 565 | pinMode( 1, OUTPUT); |
| 566 | |
| 567 | // vsync line |
| 568 | pinMode(3, INPUT); |
| 569 | attachInterrupt(3, vsync_isr_nop, RISING); |
| 570 | NVIC_SET_PRIORITY(IRQ_PORTA, 16); |
| 571 | |
| 572 | // led |
| 573 | pinMode(13, OUTPUT); |
| 574 | |
| 575 | // lower other priorities |
| 576 | SCB_SHPR1 = SCB_SHPR2 = SCB_SHPR3 = 0x10101010; |
| 577 | |
| 578 | // CORE_PIN0_PORTSET CORE_PIN0_BITMASK PORTB_PCR16 |
| 579 | printf("GPIOB PDDR, PDIR: %08x %08x\n", GPIOB_PDIR, GPIOB_PDDR); |
| 580 | printf("GPIOC PDDR, PDIR: %08x %08x\n", GPIOC_PDIR, GPIOC_PDDR); |
| 581 | printf("GPIOD PDDR, PDIR: %08x %08x\n", GPIOD_PDIR, GPIOD_PDDR); |
| 582 | printf("PORTB_PCR16: %08x\n", PORTB_PCR16); |
| 583 | printf("PORTC_PCR6: %08x\n", PORTC_PCR6); |
| 584 | printf("PORTD_PCR0: %08x\n", PORTD_PCR0); |
| 585 | |
| 586 | asm("mrs %0, BASEPRI" : "=r"(ret)); |
| 587 | printf("BASEPRI: %d, SHPR: %08x %08x %08x\n", |
| 588 | ret, SCB_SHPR1, SCB_SHPR2, SCB_SHPR3); |
| 589 | |
| 590 | edge_cnt_last = g.edge_cnt; |
| 591 | |
| 592 | while (1) { |
| 593 | struct tas_pkt pkt; |
| 594 | uint32_t now; |
| 595 | |
| 596 | if (g.stream_enable_to && !g.stream_ended) { |
| 597 | check_get_data(0); |
| 598 | if (g.inc_mode == INC_MODE_SHARED_PL2) |
| 599 | check_get_data(1); |
| 600 | } |
| 601 | |
| 602 | while (g.stream_enable_from && !g.stream_ended |
| 603 | && get_used_from() >= sizeof(pkt.data) / STREAM_EL_SZ) |
| 604 | { |
| 605 | uint32_t o; |
| 606 | int i; |
| 607 | |
| 608 | o = g.pos_from.o; |
| 609 | for (i = 0; i < sizeof(pkt.data); i += STREAM_EL_SZ) { |
| 610 | memcpy(pkt.data + i, &g.stream_from[o++], |
| 611 | STREAM_EL_SZ); |
| 612 | o &= STREAM_BUF_MASK; |
| 613 | } |
| 614 | g.pos_from.o = o; |
| 615 | |
| 616 | pkt.type = PKT_STREAM_DATA_FROM; |
| 617 | pkt.size = i; |
| 618 | |
| 619 | ret = usb_rawhid_send(&pkt, 1000); |
| 620 | if (ret != sizeof(pkt)) { |
| 621 | printf("send DATA_FROM: %d\n", ret); |
| 622 | break; |
| 623 | } |
| 624 | } |
| 625 | |
| 626 | now = millis(); |
| 627 | |
| 628 | // start condition check |
| 629 | if (now - scheck_time > 1000) { |
| 630 | edge_cnt = g.edge_cnt; |
| 631 | //printf("e: %d th: %d\n", edge_cnt - edge_cnt_last, |
| 632 | // PL1_TH()); |
| 633 | if ((g.stream_enable_to || g.stream_enable_from) |
| 634 | && !g.stream_started |
| 635 | && edge_cnt - edge_cnt_last > 10000) |
| 636 | { |
| 637 | do_start_seq(); |
| 638 | edge_cnt = g.edge_cnt; |
| 639 | } |
| 640 | edge_cnt_last = edge_cnt; |
| 641 | scheck_time = now; |
| 642 | } |
| 643 | |
| 644 | // led? |
| 645 | if (CORE_PIN13_PORTREG & CORE_PIN13_BITMASK) { |
| 646 | if ((int)(now - led_time) > 10) |
| 647 | CORE_PIN13_PORTCLEAR = CORE_PIN13_BITMASK; |
| 648 | } |
| 649 | |
| 650 | // something on rawhid? |
| 651 | if (usb_rawhid_available() > 0) |
| 652 | { |
| 653 | ret = usb_rawhid_recv(buf, 20); |
| 654 | if (ret == 64) { |
| 655 | led_time = millis(); |
| 656 | CORE_PIN13_PORTSET = CORE_PIN13_BITMASK; |
| 657 | |
| 658 | do_usb(buf); |
| 659 | } |
| 660 | else { |
| 661 | printf("usb_rawhid_recv: %d\n", ret); |
| 662 | } |
| 663 | } |
| 664 | } |
| 665 | |
| 666 | return 0; |
| 667 | } |