155 lines
5.1 KiB
C
155 lines
5.1 KiB
C
/********************************** (C) COPYRIGHT *******************************
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* File Name : lwns_broadcast_example.c
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* Author : WCH
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* Version : V1.0
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* Date : 2021/06/20
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* Description : broadcast，广播程序例子
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*********************************************************************************
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* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
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* Attention: This software (modified or not) and binary are used for
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* microcontroller manufactured by Nanjing Qinheng Microelectronics.
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*******************************************************************************/
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#include "lwns_broadcast_example.h"
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//每个文件单独debug打印的开关，置0可以禁止本文件内部打印
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#define DEBUG_PRINT_IN_THIS_FILE 1
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#if DEBUG_PRINT_IN_THIS_FILE
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#define PRINTF(...) PRINT(__VA_ARGS__)
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#else
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#define PRINTF(...) \
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do \
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{ \
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} while(0)
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#endif
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//用户需要发送的数据缓冲区
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static uint8_t TX_DATA[10] =
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{0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39};
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static uint8_t RX_DATA[10]; //用户接收数据的缓冲区
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static uint16_t lwns_broadcast_ProcessEvent(uint8_t task_id, uint16_t events);
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static void broadcast_recv(lwns_controller_ptr ptr,
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const lwns_addr_t *sender); //接收回调函数声明
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static void broadcast_sent(lwns_controller_ptr ptr); //发送回调函数声明
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static lwns_broadcast_controller broadcast; //广播控制结构体
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static uint8_t broadcast_taskID;
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/*********************************************************************
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* @fn broadcast_recv
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*
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* @brief lwns broadcast接收回调函数
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*
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* @param ptr - 本次接收到的数据所属的广播控制结构体指针.
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* @param sender - 本次接收到的数据的发送者地址指针.
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*
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* @return None.
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*/
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static void broadcast_recv(lwns_controller_ptr ptr,
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const lwns_addr_t *sender)
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{
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uint8_t len;
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len = lwns_buffer_datalen(); //获取当前缓冲区接收到的数据长度
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if(len == 10)
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{
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lwns_buffer_save_data(RX_DATA); //接收数据到用户数据区域
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PRINTF("broadcast %d rec from %02x %02x %02x %02x %02x %02x\n", get_lwns_object_port(ptr),
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sender->v8[0], sender->v8[1], sender->v8[2], sender->v8[3],
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sender->v8[4], sender->v8[5]); //打印出本次消息的发送者地址
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PRINTF("data:");
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for(uint8_t i = 0; i < len; i++)
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{
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PRINTF("%02x ", RX_DATA[i]); //打印数据
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}
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PRINTF("\n");
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}
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else
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{
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PRINTF("data len err\n");
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}
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}
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/*********************************************************************
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* @fn broadcast_sent
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*
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* @brief lwns broadcast发送完成回调函数
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*
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* @param ptr - 本次发送完成的广播控制结构体指针.
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*
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* @return None.
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*/
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static void broadcast_sent(lwns_controller_ptr ptr)
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{
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PRINTF("broadcast %d sent\n", get_lwns_object_port(ptr)); //打印发送完成信息
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}
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/**
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* lwns广播回调函数结构体，注册回调函数
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*/
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static const struct lwns_broadcast_callbacks broadcast_call = {
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broadcast_recv, broadcast_sent};
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/*********************************************************************
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* @fn lwns_broadcast_process_init
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*
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* @brief lwns broadcast例程初始化.
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*
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* @param None.
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*
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* @return None.
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*/
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void lwns_broadcast_process_init(void)
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{
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broadcast_taskID = TMOS_ProcessEventRegister(lwns_broadcast_ProcessEvent);
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lwns_broadcast_init(&broadcast, 136, &broadcast_call); //打开一个端口号为136的广播端口，注册回调函数
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tmos_start_task(broadcast_taskID, BROADCAST_EXAMPLE_TX_PERIOD_EVT,
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MS1_TO_SYSTEM_TIME(1000)); //开始周期性广播任务
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}
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/*********************************************************************
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* @fn lwns_broadcast_ProcessEvent
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*
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* @brief lwns broadcast Task event processor. This function
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* is called to process all events for the task. Events
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* include timers, messages and any other user defined events.
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*
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* @param task_id - The TMOS assigned task ID.
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* @param events - events to process. This is a bit map and can
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* contain more than one event.
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*
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* @return events not processed.
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*/
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uint16_t lwns_broadcast_ProcessEvent(uint8_t task_id, uint16_t events)
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{
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if(events & BROADCAST_EXAMPLE_TX_PERIOD_EVT)
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{
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uint8_t temp;
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temp = TX_DATA[0];
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for(uint8_t i = 0; i < 9; i++)
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{
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TX_DATA[i] = TX_DATA[i + 1]; //移位发送数据，以便观察效果
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}
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TX_DATA[9] = temp;
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lwns_buffer_load_data(TX_DATA, sizeof(TX_DATA)); //载入需要发送的数据到缓冲区
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lwns_broadcast_send(&broadcast); //广播发送数据
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tmos_start_task(broadcast_taskID, BROADCAST_EXAMPLE_TX_PERIOD_EVT,
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MS1_TO_SYSTEM_TIME(1000)); //周期性发送
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return events ^ BROADCAST_EXAMPLE_TX_PERIOD_EVT;
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}
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if(events & SYS_EVENT_MSG)
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{
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uint8_t *pMsg;
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if((pMsg = tmos_msg_receive(task_id)) != NULL)
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{
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// Release the TMOS message
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tmos_msg_deallocate(pMsg);
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}
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// return unprocessed events
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return (events ^ SYS_EVENT_MSG);
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}
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return 0;
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}
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