98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
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/*
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* Copyright (c) 2020 Jinan Bosai Network Technology Co., 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 "cmsis_os2.h"
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#include "iot_errno.h"
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#include "iot_uart.h"
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#include "ohos_init.h"
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#define UART_TASK_STACK_SIZE 1024 * 8
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#define UART_TASK_PRIO 25
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#define UART_BUFF_SIZE 1000
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#define WIFI_IOT_UART_IDX_1 1
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static const char* data = "Hello, BearPi!\r\n";
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/**
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* @brief uart task send data through uart1 and receive data through uart1
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*
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*/
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static void UartTask(void)
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{
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uint8_t uart_buff[UART_BUFF_SIZE] = {0};
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uint8_t* uart_buff_ptr = uart_buff;
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uint32_t ret;
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IotUartAttribute uart_attr = {
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// baud_rate: 9600
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.baudRate = 9600,
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// data_bits: 8bits
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.dataBits = 8,
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.stopBits = 1,
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.parity = 0,
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};
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// Initialize uart driver
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ret = IoTUartInit(WIFI_IOT_UART_IDX_1, &uart_attr);
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if (ret != IOT_SUCCESS) {
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printf("Failed to init uart! Err code = %d\n", ret);
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return;
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}
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while (1) {
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printf("=======================================\r\n");
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printf("*************UART_example**************\r\n");
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printf("=======================================\r\n");
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// send data through uart1
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IoTUartWrite(WIFI_IOT_UART_IDX_1, (unsigned char*)data, strlen(data));
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// receive data through uart1
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IoTUartRead(WIFI_IOT_UART_IDX_1, uart_buff_ptr, UART_BUFF_SIZE);
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printf("Uart1 read data:%s\n", uart_buff_ptr);
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usleep(1000000);
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}
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}
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/**
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* @brief Main Entry of the UART Example
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*
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*/
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static void UartExampleEntry(void)
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{
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osThreadAttr_t attr;
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attr.name = "UartTask";
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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 = UART_TASK_STACK_SIZE;
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attr.priority = UART_TASK_PRIO;
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if (osThreadNew((osThreadFunc_t)UartTask, NULL, &attr) == NULL) {
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printf("Failed to create UartTask!\n");
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}
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}
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APP_FEATURE_INIT(UartExampleEntry);
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