112 lines
2.8 KiB
C
112 lines
2.8 KiB
C
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/*
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* Copyright (c) 2022 Jinan Bosai Network Technology Co., LTD Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "DOOR.h"
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#include "cmsis_os2.h"
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#include "ohos_init.h"
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#include "iot_gpio.h"
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#include "iot_gpio_ex.h"
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#include "hi_time.h"
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#define TASK_STACK_SIZE 1024 * 8
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#define TASK_PRIO 25
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#define GPIO_0 10
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#define GPIO_1 12
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float GetDistance (void) {
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static unsigned long start_time = 0, time = 0;
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float distance = 0.0;
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IotGpioValue value = IOT_GPIO_VALUE0;
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unsigned int flag = 0;
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IoTWatchDogDisable();
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// hi_io_set_func(GPIO_8, GPIO_FUNC);
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IoTGpioInit(GPIO_0);
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IoTGpioSetFunc(GPIO_0, IOT_GPIO_FUNC_GPIO_10_GPIO);
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IoTGpioSetDir(GPIO_0, IOT_GPIO_DIR_IN);
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IoTGpioInit(GPIO_1);
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IoTGpioSetFunc(GPIO_1, IOT_GPIO_FUNC_GPIO_12_GPIO);
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IoTGpioSetDir(GPIO_1, IOT_GPIO_DIR_OUT);
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IoTGpioSetOutputVal(GPIO_1, IOT_GPIO_VALUE1);
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hi_udelay(20);
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IoTGpioSetOutputVal(GPIO_1, IOT_GPIO_VALUE0);
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while (1) {
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IoTGpioGetInputVal(GPIO_0, &value);
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if ( value == IOT_GPIO_VALUE1 && flag == 0) {
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start_time = hi_get_us();
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flag = 1;
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}
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if (value == IOT_GPIO_VALUE0 && flag == 1) {
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time = hi_get_us() - start_time;
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start_time = 0;
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break;
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}
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}
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distance = time * 0.034 / 2;
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return distance;
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}
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static void ExampleTask(void)
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{
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IotGpioValue value = IOT_GPIO_VALUE0;
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// IoTGpioInit(11);
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// IoTGpioSetFunc(11, IOT_GPIO_FUNC_GPIO_11_GPIO);
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// IoTGpioSetPull(11,IOT_GPIO_PULL_UP);
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// IoTGpioSetDir(11, IOT_GPIO_DIR_IN);
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printf("start test hcsr04\r\n");
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while (1) {
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// IoTGpioGetInputVal(11, &value);
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// if (value == IOT_GPIO_VALUE0) {
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float distance = GetDistance();
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printf("distance is %f\r\n", distance);
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//
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// }
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osDelay(100);
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}
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}
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static void ExampleEntry(void)
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{
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osThreadAttr_t attr;
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attr.name = "ExampleTask";
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attr.attr_bits = 0U;
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attr.cb_mem = NULL;
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attr.cb_size = 0U;
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attr.stack_mem = NULL;
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attr.stack_size = TASK_STACK_SIZE;
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attr.priority = TASK_PRIO;
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if (osThreadNew((osThreadFunc_t)ExampleTask, NULL, &attr) == NULL) {
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printf("Failed to create ExampleTask!\n");
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}
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}
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APP_FEATURE_INIT(ExampleEntry);
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