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Diffstat (limited to 'testhal/LPC17xx/DAC/main.c')
| -rw-r--r-- | testhal/LPC17xx/DAC/main.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/testhal/LPC17xx/DAC/main.c b/testhal/LPC17xx/DAC/main.c new file mode 100644 index 000000000..68cf55659 --- /dev/null +++ b/testhal/LPC17xx/DAC/main.c @@ -0,0 +1,115 @@ +/* + ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + +#include "ch.h" +#include "hal.h" + +#define NSAMPLES 255 + +const uint32_t sine_wave[NSAMPLES] = { + 512 << 6, 524 << 6, 537 << 6, 549 << 6, 562 << 6, 574 << 6, 587 << 6, 599 << 6, 612 << 6, 624 << 6, + 636 << 6, 649 << 6, 661 << 6, 673 << 6, 685 << 6, 696 << 6, 708 << 6, 720 << 6, 731 << 6, 743 << 6, + 754 << 6, 765 << 6, 776 << 6, 786 << 6, 797 << 6, 807 << 6, 818 << 6, 828 << 6, 837 << 6, 847 << 6, + 856 << 6, 866 << 6, 875 << 6, 883 << 6, 892 << 6, 900 << 6, 908 << 6, 916 << 6, 924 << 6, 931 << 6, + 938 << 6, 945 << 6, 952 << 6, 958 << 6, 964 << 6, 970 << 6, 975 << 6, 981 << 6, 985 << 6, 990 << 6, + 994 << 6, 998 << 6, 1002 << 6, 1006 << 6, 1009 << 6, 1012 << 6, 1014 << 6, 1016 << 6, 1018 << 6, 1020 << 6, +1021 << 6, 1022 << 6, 1023 << 6, 1023 << 6, 1023 << 6, 1023 << 6, 1023 << 6, 1022 << 6, 1021 << 6, 1019 << 6, +1017 << 6, 1015 << 6, 1013 << 6, 1010 << 6, 1007 << 6, 1004 << 6, 1000 << 6, 996 << 6, 992 << 6, 988 << 6, + 983 << 6, 978 << 6, 973 << 6, 967 << 6, 961 << 6, 955 << 6, 948 << 6, 942 << 6, 935 << 6, 928 << 6, + 920 << 6, 912 << 6, 904 << 6, 896 << 6, 888 << 6, 879 << 6, 870 << 6, 861 << 6, 852 << 6, 842 << 6, + 832 << 6, 823 << 6, 812 << 6, 802 << 6, 792 << 6, 781 << 6, 770 << 6, 759 << 6, 748 << 6, 737 << 6, + 725 << 6, 714 << 6, 702 << 6, 691 << 6, 679 << 6, 667 << 6, 655 << 6, 642 << 6, 630 << 6, 618 << 6, + 606 << 6, 593 << 6, 581 << 6, 568 << 6, 556 << 6, 543 << 6, 530 << 6, 518 << 6, 505 << 6, 493 << 6, + 480 << 6, 467 << 6, 455 << 6, 442 << 6, 430 << 6, 417 << 6, 405 << 6, 393 << 6, 381 << 6, 368 << 6, + 356 << 6, 344 << 6, 332 << 6, 321 << 6, 309 << 6, 298 << 6, 286 << 6, 275 << 6, 264 << 6, 253 << 6, + 242 << 6, 231 << 6, 221 << 6, 211 << 6, 200 << 6, 191 << 6, 181 << 6, 171 << 6, 162 << 6, 153 << 6, + 144 << 6, 135 << 6, 127 << 6, 119 << 6, 111 << 6, 103 << 6, 95 << 6, 88 << 6, 81 << 6, 75 << 6, + 68 << 6, 62 << 6, 56 << 6, 50 << 6, 45 << 6, 40 << 6, 35 << 6, 31 << 6, 27 << 6, 23 << 6, + 19 << 6, 16 << 6, 13 << 6, 10 << 6, 8 << 6, 6 << 6, 4 << 6, 2 << 6, 1 << 6, 0 << 6, + 0 << 6, 0 << 6, 0 << 6, 0 << 6, 1 << 6, 2 << 6, 3 << 6, 5 << 6, 7 << 6, 9 << 6, + 11 << 6, 14 << 6, 17 << 6, 21 << 6, 25 << 6, 29 << 6, 33 << 6, 38 << 6, 42 << 6, 48 << 6, + 53 << 6, 59 << 6, 65 << 6, 71 << 6, 78 << 6, 85 << 6, 92 << 6, 99 << 6, 107 << 6, 115 << 6, + 123 << 6, 131 << 6, 140 << 6, 148 << 6, 157 << 6, 167 << 6, 176 << 6, 186 << 6, 195 << 6, 205 << 6, + 216 << 6, 226 << 6, 237 << 6, 247 << 6, 258 << 6, 269 << 6, 280 << 6, 292 << 6, 303 << 6, 315 << 6, + 327 << 6, 338 << 6, 350 << 6, 362 << 6, 374 << 6, 387 << 6, 399 << 6, 411 << 6, 424 << 6, 436 << 6, + 449 << 6, 461 << 6, 474 << 6, 486 << 6, 499 << 6}; + +/* + * Red LEDs blinker thread, times are in milliseconds. + */ +static WORKING_AREA(waThread1, 128); +static msg_t Thread1(void *arg) { + + (void)arg; + chRegSetThreadName("blinker"); + while (TRUE) { + palTogglePad(GPIO0, GPIO0_LED2_RED); + chThdSleepMilliseconds(500); + } +} + +/* + * DAC conversion groups, with callbacks. + */ +static const DACConversionGroup dacconvgrp1 = { + 1, /* Channels */ + NULL, /* End of transfer callback */ + NULL, /* Error callback */ + true /*circular mode */ +}; + +/* + * DAC config + */ +static const DACConfig daccfg1 = { + 1000*NSAMPLES, /* Multiply the buffer size to the desired frequency in Hz */ +}; + +/* + * Application entry point. + */ +int main(void) { + /* + * System initializations. + * - HAL initialization, this also initializes the configured device drivers + * and performs the board-specific initializations. + * - Kernel initialization, the main() function becomes a thread and the + * RTOS is active. + */ + halInit(); + chSysInit(); + + /* + * Creates the blinker thread. + */ + chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL); + + /* + * Starting the DAC driver. + */ + dacStart(&DACD1, &daccfg1); + + /* + * Sending the dac_buffer + */ + dacStartConversion(&DACD1, &dacconvgrp1, sine_wave, NSAMPLES); + + while (TRUE) { + + chThdSleepMilliseconds(1000); + + } +} |