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https://github.com/Fishwaldo/bl_mcu_sdk.git
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67 lines
2 KiB
C
67 lines
2 KiB
C
/**
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* @file pwm_breath_led.c
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* @brief
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*
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* Copyright (c) 2021 Bouffalolab team
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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*/
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#include "hal_pwm.h"
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#include "hal_gpio.h"
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int main(void)
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{
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pwm_config_t pwm_cfg = {
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1000000,
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0,
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};
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bflb_platform_init(0);
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gpio_set_mode(GPIO_PIN_29, GPIO_OUTPUT_PP_MODE);
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gpio_set_mode(GPIO_PIN_30, GPIO_OUTPUT_PP_MODE);
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gpio_set_mode(GPIO_PIN_31, GPIO_OUTPUT_PP_MODE);
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gpio_write(GPIO_PIN_29, 0);
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gpio_write(GPIO_PIN_30, 0);
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gpio_write(GPIO_PIN_31, 0);
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pwm_register(PWM_CH2_INDEX, "led_breath", DEVICE_OFLAG_RDWR);
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struct device *led_breath = device_find("led_breath");
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if (led_breath)
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{
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device_open(led_breath, 0);
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}
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while (1)
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{
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for (pwm_cfg.dutyCycle = 0; pwm_cfg.dutyCycle < 100; pwm_cfg.dutyCycle++)
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{
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device_control(led_breath, DEVICE_CTRL_CONFIG, &pwm_cfg);
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bflb_platform_delay_ms(10);
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}
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for (pwm_cfg.dutyCycle = 100; pwm_cfg.dutyCycle > 0; pwm_cfg.dutyCycle--)
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{
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device_control(led_breath, DEVICE_CTRL_CONFIG, &pwm_cfg);
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bflb_platform_delay_ms(10);
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}
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}
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BL_CASE_SUCCESS;
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}
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