From ce7afa78c96018671325f46b2fc0981fd8aff6b7 Mon Sep 17 00:00:00 2001 From: Giovanni Di Sirio Date: Wed, 13 May 2015 13:02:52 +0000 Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7979 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- testhal/STM32/STM32F30x/DAC/main.c | 157 +++++++++++++++++++++++++++++++++++++ 1 file changed, 157 insertions(+) create mode 100644 testhal/STM32/STM32F30x/DAC/main.c (limited to 'testhal/STM32/STM32F30x/DAC/main.c') diff --git a/testhal/STM32/STM32F30x/DAC/main.c b/testhal/STM32/STM32F30x/DAC/main.c new file mode 100644 index 000000000..08b3faf24 --- /dev/null +++ b/testhal/STM32/STM32F30x/DAC/main.c @@ -0,0 +1,157 @@ +/* + ChibiOS - Copyright (C) 2006..2015 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 DAC_BUFFER_SIZE 360 + +/* + * DAC test buffer (sine wave). + */ +static const dacsample_t dac_buffer[DAC_BUFFER_SIZE] = { + 2047, 2082, 2118, 2154, 2189, 2225, 2260, 2296, 2331, 2367, 2402, 2437, + 2472, 2507, 2542, 2576, 2611, 2645, 2679, 2713, 2747, 2780, 2813, 2846, + 2879, 2912, 2944, 2976, 3008, 3039, 3070, 3101, 3131, 3161, 3191, 3221, + 3250, 3278, 3307, 3335, 3362, 3389, 3416, 3443, 3468, 3494, 3519, 3544, + 3568, 3591, 3615, 3637, 3660, 3681, 3703, 3723, 3744, 3763, 3782, 3801, + 3819, 3837, 3854, 3870, 3886, 3902, 3917, 3931, 3944, 3958, 3970, 3982, + 3993, 4004, 4014, 4024, 4033, 4041, 4049, 4056, 4062, 4068, 4074, 4078, + 4082, 4086, 4089, 4091, 4092, 4093, 4094, 4093, 4092, 4091, 4089, 4086, + 4082, 4078, 4074, 4068, 4062, 4056, 4049, 4041, 4033, 4024, 4014, 4004, + 3993, 3982, 3970, 3958, 3944, 3931, 3917, 3902, 3886, 3870, 3854, 3837, + 3819, 3801, 3782, 3763, 3744, 3723, 3703, 3681, 3660, 3637, 3615, 3591, + 3568, 3544, 3519, 3494, 3468, 3443, 3416, 3389, 3362, 3335, 3307, 3278, + 3250, 3221, 3191, 3161, 3131, 3101, 3070, 3039, 3008, 2976, 2944, 2912, + 2879, 2846, 2813, 2780, 2747, 2713, 2679, 2645, 2611, 2576, 2542, 2507, + 2472, 2437, 2402, 2367, 2331, 2296, 2260, 2225, 2189, 2154, 2118, 2082, + 2047, 2012, 1976, 1940, 1905, 1869, 1834, 1798, 1763, 1727, 1692, 1657, + 1622, 1587, 1552, 1518, 1483, 1449, 1415, 1381, 1347, 1314, 1281, 1248, + 1215, 1182, 1150, 1118, 1086, 1055, 1024, 993, 963, 933, 903, 873, + 844, 816, 787, 759, 732, 705, 678, 651, 626, 600, 575, 550, + 526, 503, 479, 457, 434, 413, 391, 371, 350, 331, 312, 293, + 275, 257, 240, 224, 208, 192, 177, 163, 150, 136, 124, 112, + 101, 90, 80, 70, 61, 53, 45, 38, 32, 26, 20, 16, + 12, 8, 5, 3, 2, 1, 0, 1, 2, 3, 5, 8, + 12, 16, 20, 26, 32, 38, 45, 53, 61, 70, 80, 90, + 101, 112, 124, 136, 150, 163, 177, 192, 208, 224, 240, 257, + 275, 293, 312, 331, 350, 371, 391, 413, 434, 457, 479, 503, + 526, 550, 575, 600, 626, 651, 678, 705, 732, 759, 787, 816, + 844, 873, 903, 933, 963, 993, 1024, 1055, 1086, 1118, 1150, 1182, + 1215, 1248, 1281, 1314, 1347, 1381, 1415, 1449, 1483, 1518, 1552, 1587, + 1622, 1657, 1692, 1727, 1763, 1798, 1834, 1869, 1905, 1940, 1976, 2012 +}; + +/* + * DAC streaming callback. + */ +size_t nx = 0, ny = 0, nz = 0; +static void end_cb1(DACDriver *dacp, const dacsample_t *buffer, size_t n) { + + (void)dacp; + + nz++; + if (dac_buffer == buffer) { + nx += n; + } + else { + ny += n; + } + + if ((nz % 1000) == 0) { + palTogglePad(GPIOD, GPIOD_LED3); + } +} + +/* + * DAC error callback. + */ +static void error_cb1(DACDriver *dacp, dacerror_t err) { + + (void)dacp; + (void)err; + + chSysHalt("DAC failure"); +} + +static const DACConfig dac1cfg1 = { + init: 2047U, + datamode: DAC_DHRM_12BIT_RIGHT +}; + +static const DACConversionGroup dacgrpcfg1 = { + num_channels: 1U, + end_cb: end_cb1, + error_cb: error_cb1, + trigger: DAC_TRG(0) +}; + +/* + * GPT2 configuration. + */ +static const GPTConfig gpt6cfg1 = { + frequency: 1000000U, + callback: NULL, + cr2: TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event. */ + dier: 0U +}; + +/* + * 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(); + + /* + * Starting DAC1 driver, setting up the output pin as analog as suggested + * by the Reference Manual. + */ + palSetPadMode(GPIOA, 4, PAL_MODE_INPUT_ANALOG); + dacStart(&DACD1, &dac1cfg1); + + /* + * Starting GPT6 driver, it is used for triggering the DAC. + */ + gptStart(&GPTD6, &gpt6cfg1); + + /* + * Starting a continuous conversion. + */ + dacStartConversion(&DACD1, &dacgrpcfg1, dac_buffer, DAC_BUFFER_SIZE); + gptStartContinuous(&GPTD6, 2U); + + /* + * Normal main() thread activity, if the button is pressed then the DAC + * transfer is stopped. + */ + while (true) { + if (palReadPad(GPIOA, GPIOA_BUTTON)) { + gptStopTimer(&GPTD6); + dacStopConversion(&DACD1); + } + chThdSleepMilliseconds(500); + } + return 0; +} -- cgit v1.2.3