1 /*
2 * Copyright (C) 2022 HiHope Open Source Organization .
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http:// www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 *
14 * limitations under the License.
15 */
16
17 #include <stdio.h>
18 #include <unistd.h>
19 #include "ohos_init.h"
20 #include "cmsis_os2.h"
21 #include "wifiiot_gpio.h"
22 #include "wifiiot_gpio_ex.h"
23 #include "wifiiot_uart.h"
24 #include "wifiiot_uart_ex.h"
25
26 #define ATTR.STACK_SIZE 1024
27 #define U_SLEEP 100000
28
29 unsigned char uartWriteBuff[] = "hello uart!";
30 unsigned char uartReadBuff[2048] = {0};
usr_uart_config(void)31 int usr_uart_config(void)
32 {
33 int ret;
34 // 初始化UART配置，115200，数据bit为8,停止位1，奇偶校验为NONE，流控为NONE
35 WifiIotUartAttribute g_uart_cfg = {115200, 8, 1, WIFI_IOT_UART_PARITY_NONE, 0};
36 ret = UartInit(WIFI_IOT_UART_IDX_2, &g_uart_cfg, NULL);
37 if (ret != 0) {
38 printf("uart init fail\r\n");
39 }
40 return ret;
41 }
42
43
44 // 1.任务处理函数
UartDemo_Task(const char * arg)45 static void* UartDemo_Task(const char* arg)
46 {
47 unsigned int len = 0;
48
49 (void)arg;
50 printf("[UartDemo] UartDemo_Task()\n");
51
52 GpioInit(); // 使用GPIO，都需要调用该接口
53 printf("UART init...\r\n");
54 usr_uart_config();
55
56 UartWrite(WIFI_IOT_UART_IDX_2, (unsigned char *)uartWriteBuff, sizeof(uartWriteBuff));
57 while (1) {
58 len = UartRead(WIFI_IOT_UART_IDX_2, uartReadBuff, sizeof(uartReadBuff));
59 if (len > 0) {
60 printf("Uart read data:%s", uartReadBuff);
61 }
62 usleep(U_SLEEP);
63 }
64 return NULL;
65 }
66
67 // 2.任务入口函数
UartDemo_Entry(void)68 static void UartDemo_Entry(void)
69 {
70 osThreadAttr_t attr = {0};
71
72 printf("[UartDemo] UartDemo_Entry()\n");
73
74 attr.name = "UartDemo_Task";
75 attr.attr_bits = 0U;
76 attr.cb_mem = NULL;
77 attr.cb_size = 0U;
78 attr.stack_mem = NULL;
79 attr.stack_size = ATTR.STACK_SIZE; // 堆栈大小
80 attr.priority = osPriorityNormal; // 优先级
81
82 if (osThreadNew((osThreadFunc_t)UartDemo_Task, NULL, &attr) == NULL) {
83 printf("[UartDemo] Failed to create UartDemo_Task!\n");
84 }
85 }
86
87 // 3.注册模块
88 SYS_RUN(UartDemo_Entry);
89