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71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
/*
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* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "unity.h"
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#include "test_utils.h"
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#include "soc/soc_caps.h"
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#if SOC_SIGMADELTA_SUPPORTED
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#include "driver/sigmadelta.h"
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TEST_CASE("SigmaDelta config test", "[sigma_delta]")
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{
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sigmadelta_config_t sigmadelta_cfg = {
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.sigmadelta_prescale = 80,
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.sigmadelta_duty = 45,
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.sigmadelta_gpio = 4,
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};
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for (int i = 0; i < SOC_SIGMADELTA_CHANNEL_NUM; i++) {
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sigmadelta_cfg.channel = i;
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TEST_ESP_OK(sigmadelta_config(&sigmadelta_cfg));
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}
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sigmadelta_cfg.channel = SOC_SIGMADELTA_CHANNEL_NUM;
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TEST_ASSERT_EQUAL_MESSAGE(ESP_ERR_INVALID_ARG, sigmadelta_config(&sigmadelta_cfg), "wrong channel number should be inspected");
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}
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// connect GPIO4 with LED positive pin, and the GND pin connect LED negative pin
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// logic analyzer help also to see the wave form(more standard and accurate)
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TEST_CASE("SigmaDelta pin, duty, prescale set", "[sigma_delta][ignore]")
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{
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sigmadelta_config_t sigmadelta_cfg = {
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.channel = 0,
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.sigmadelta_prescale = 80,
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.sigmadelta_duty = 0,
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.sigmadelta_gpio = 4,
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};
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TEST_ESP_OK(sigmadelta_config(&sigmadelta_cfg));
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int8_t duty = 0;
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int inc = 1;
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for (int i = 0; i < 1000; i++) {
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sigmadelta_set_duty(sigmadelta_cfg.channel, duty);
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vTaskDelay(10 / portTICK_PERIOD_MS);
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duty += inc;
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if (duty == 127 || duty == -127) {
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inc = (-1) * inc;
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}
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}
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TEST_ESP_OK(sigmadelta_set_prescale(0, 200));
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for (int i = 0; i < 1000; i++) {
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sigmadelta_set_duty(sigmadelta_cfg.channel, duty);
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vTaskDelay(10 / portTICK_PERIOD_MS);
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duty += inc;
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if (duty == 127 || duty == -127) {
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inc = (-1) * inc;
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}
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}
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TEST_ESP_OK(sigmadelta_set_pin(sigmadelta_cfg.channel, 5));
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vTaskDelay(3000 / portTICK_PERIOD_MS);
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}
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#endif // SOC_SIGMADELTA_SUPPORTED
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