321 lines
8.7 KiB
C
321 lines
8.7 KiB
C
/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2019-04-16 misonyo first implementation.
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*/
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/*
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* 程序清单：这是一个串口设备 DMA 接收使用例程
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* 例程导出了 uart_dma_sample 命令到控制终端
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* 命令调用格式：uart_dma_sample uart3
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* 命令解释：命令第二个参数是要使用的串口设备名称，为空则使用默认的串口设备
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* 程序功能：通过串口输出字符串"hello RT-Thread!"，并通过串口输出接收到的数据，然后打印接收到的数据。
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*/
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#include <rtthread.h>
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#include <dfs_file.h>
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#include <usrcfg.h>
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#include <board.h>
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#define LOG_TAG "RS485"
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#define LOG_LVL LOG_LVL_DBG
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#include <ulog.h>
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#define TR485
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#define SAMPLE_UART_NAME "uart6" /* 串口设备名称 */
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static rt_timer_t timer485=RT_NULL;
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static rt_mutex_t sendcmd=RT_NULL;
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#ifndef MIN_FRAME_LEN
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#define MIN_FRAME_LEN 10
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#endif
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/* 串口接收消息结构*/
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struct rx_msg
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{
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rt_device_t dev;
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rt_size_t size;
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};
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/* 串口设备句柄 */
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static rt_device_t serial485;
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/* 消息队列控制块 */
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static struct rt_messagequeue rx485_mq;
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//static char rx_buffer[RT_SERIAL_RB_BUFSZ/4 + 1];
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/* 接收数据回调函数 */
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static rt_err_t uart485_input(rt_device_t dev, rt_size_t size)
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{
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struct rx_msg msg;
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rt_err_t result;
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static rt_size_t cachecnt=0;
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cachecnt += size;
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if (cachecnt < 63) {
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// LOG_W("not enough data[%d byte(s)], cached and waiting...",size);//处理半包
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// LOG_D("%d byte(s)",size);
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return -1;
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}
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msg.dev = dev;
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msg.size = cachecnt;
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result = rt_mq_send(&rx485_mq, &msg, sizeof(msg));
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if ( result == -RT_EFULL)
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{
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/* 消息队列满 */
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LOG_W("485 message queue full！");
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}
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cachecnt = 0;
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return result;
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}
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typedef struct{
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uint8_t norVol[2];
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uint8_t cnt[2];
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uint8_t level[2];
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uint8_t Ah[2];
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uint8_t current[2];
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uint8_t incu[2];
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uint8_t temp1[2];
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uint8_t temp2[2];
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uint8_t temp3[2];
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uint8_t vol1[2];
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uint8_t vol2[2];
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uint8_t vol3[2];
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uint8_t vol4[2];
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uint8_t vol5[2];
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uint8_t vol6[2];
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uint8_t vol7[2];
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uint8_t vol8[2];
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}BATT_INFO;
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static BATT_INFO batt;
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static int readyToSend=1;
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static void timer485_cb()
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{
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// rt_mutex_release(sendcmd);
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readyToSend = 1;
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}
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static int b2v(uint8_t *din)
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{
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int rst = (din[0] << 8) + din[1];
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return rst;
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}
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void parseBattInfo(uint8_t *din, size_t len)
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{
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// LOG_HEX("batt",16,din,len);
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uint8_t head[]={0x01,0x03,0x3a};
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uint8_t index[10];
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size_t rst = isInByte(din, len, head, sizeof(head), index);
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if (!rst) {
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LOG_W("response from battery is not correct.");
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batt.level[1]=0x65;//设一个异常值便于观测101%
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return;
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}
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rt_memcpy(&batt, din+index[0]+sizeof(head), sizeof(batt));//简化，只取第一组数据
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// LOG_D("batt=%X,%X,%d\%",batt.level[0],batt.level[1],b2v(batt.level));
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}
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static void dumpBattInfo()
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{
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rt_kprintf("实际电压 %d\n",b2v(batt.norVol));
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rt_kprintf("电芯数量 %d\n",b2v(batt.cnt));
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rt_kprintf("电量 %d\n",b2v(batt.level));
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rt_kprintf("容量 %d\n",b2v(batt.Ah));
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rt_kprintf("输出电流 %d\n",b2v(batt.current));
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rt_kprintf("充电电流 %d\n",b2v(batt.incu));
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rt_kprintf("温度1 %d\n",b2v(batt.temp1));
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rt_kprintf("温度2 %d\n",b2v(batt.temp2));
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rt_kprintf("温度3 %d\n",b2v(batt.temp3));
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rt_kprintf("电芯 1电压 %d\n",b2v(batt.vol1));
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rt_kprintf("电芯 2电压 %d\n",b2v(batt.vol2));
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rt_kprintf("电芯 3电压 %d\n",b2v(batt.vol3));
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rt_kprintf("电芯 4电压 %d\n",b2v(batt.vol4));
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rt_kprintf("电芯 5电压 %d\n",b2v(batt.vol5));
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rt_kprintf("电芯 6电压 %d\n",b2v(batt.vol6));
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rt_kprintf("电芯 7电压 %d\n",b2v(batt.vol7));
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rt_kprintf("电芯 8电压 %d\n",b2v(batt.vol8));
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}
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/**
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* 获取电池电量
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* @return
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*/
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uint8_t getPowerLevel(void)
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{
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return b2v(batt.level);
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}
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/**
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* 获取电池信息，目前仅返回电量和板卡温度
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* @param dout 返回结果数组
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* @return 数组长度
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*/
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uint8_t getBattInfo(uint8_t *dout)
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{
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size_t p=0;
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memcpy(dout+p,batt.level,2);
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p += 2;
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memcpy(dout+p,batt.temp3,2);
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p += 2;
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return p;
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}
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/*
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* 获取电池RAW信息
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*/
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uint8_t getBattRAWInfo(uint8_t *dout)
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{
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uint8_t len = sizeof(batt);
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memcpy(dout,&batt,len);
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return len;
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}
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static void T485_thread_entry(void *parameter)
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{
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while (1)
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{
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//发送指令
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if (readyToSend)
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{
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readyToSend = 0;
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uint8_t cmd[] = { 0x01, 0x03, 0x00, 0x00, 0x00, 0x1d, 0x85, 0xc3 };
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//send cmd
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rt_pin_write(TR485_RE, PIN_HIGH);
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rt_device_write(serial485, 0, cmd, sizeof(cmd));
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rt_pin_write(TR485_RE, PIN_LOW);
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// LOG_D("send 485");
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}
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rt_thread_mdelay(10*1000);
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}
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}
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static void serial485_thread_entry(void *parameter)
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{
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struct rx_msg msg;
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rt_err_t result;
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rt_uint32_t rx_length=0;//单次收到的数据长度
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static char rx_buffer[RT_SERIAL_RB_BUFSZ/4 + 1];
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while (1)
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{
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rt_memset(&msg, 0, sizeof(msg));
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/* 从消息队列中读取消息*/
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result = rt_mq_recv(&rx485_mq, &msg, sizeof(msg), RT_WAITING_FOREVER);
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if (result == RT_EOK)
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{
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/* 从串口读取数据*/
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rx_length = rt_device_read(msg.dev, 0, rx_buffer, msg.size);
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if (!rx_length) {
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LOG_W("read from RS485 error");
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continue;
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}
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LOG_I("%d Bytes received from RS485",rx_length);
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LOG_HEX("485rx:",16,rx_buffer,rx_length);//print what received.
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parseBattInfo(rx_buffer, rx_length);
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}
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// rt_thread_mdelay(1*60*1000);
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}
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}
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static int uart485_dma_sample(int argc, char *argv[])
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{
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rt_err_t ret = RT_EOK;
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char uart_name[RT_NAME_MAX];
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static char msg_pool[1024];
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// char str[] = {0x01,0x03,0x00,0x00,0x00,0x1d,0x85,0xc3};
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if (argc == 2)
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{
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rt_strncpy(uart_name, argv[1], RT_NAME_MAX);
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}
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else
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{
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rt_strncpy(uart_name, SAMPLE_UART_NAME, RT_NAME_MAX);
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}
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/* 查找串口设备 */
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serial485 = rt_device_find(uart_name);
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if (!serial485)
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{
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LOG_E("find %s failed!", uart_name);
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return RT_ERROR;
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}
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/* 初始化消息队列 */
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rt_mq_init(&rx485_mq, "rx485_mq",
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msg_pool, /* 存放消息的缓冲区 */
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sizeof(struct rx_msg), /* 一条消息的最大长度 */
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sizeof(msg_pool), /* 存放消息的缓冲区大小 */
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RT_IPC_FLAG_FIFO); /* 如果有多个线程等待，按照先来先得到的方法分配消息 */
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struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT; /* 初 始 化 配 置 参 数 */
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/* step2： 修 改 串 口 配 置 参 数 */
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config.baud_rate = BAUD_RATE_9600; //修 改 波 特 率 为 9600
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config.data_bits = DATA_BITS_8; //数 据 位 8
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config.stop_bits = STOP_BITS_1; //停 止 位 1
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config.bufsz = 128; //修 改 缓 冲 区 buff size 为 128
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config.parity = PARITY_NONE; //无 奇 偶 校 验 位
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/* step3： 控 制 串 口 设 备。 通 过 控 制 接 口 传 入 命 令 控 制 字， 与 控 制 参 数 */
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rt_device_control(serial485, RT_DEVICE_CTRL_CONFIG, &config);
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/* 以 DMA 接收及轮询发送方式打开串口设备 */
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rt_device_open(serial485, RT_DEVICE_FLAG_DMA_RX);
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/* 设置接收回调函数 */
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rt_device_set_rx_indicate(serial485, uart485_input);
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/* 发送字符串 */
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/* 创建 serial 线程 */
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rt_thread_t thread = rt_thread_create("RS485", serial485_thread_entry, RT_NULL, 1024*5, 24, 10);
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/* 创建成功则启动线程 */
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if (thread != RT_NULL)
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{
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rt_thread_startup(thread);
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}
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else
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{
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ret = RT_ERROR;
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}
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/* 创建 serial 线程 */
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thread = rt_thread_create("T485", T485_thread_entry, RT_NULL, 1024*5, 25+1, 10);
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/* 创建成功则启动线程 */
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if (thread != RT_NULL)
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{
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rt_thread_startup(thread);
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}
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else
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{
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ret = RT_ERROR;
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}
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timer485 = rt_timer_create("batt", timer485_cb, RT_NULL, rt_tick_from_millisecond(1*60*1000), RT_TIMER_FLAG_PERIODIC);
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/* 启动定时器1 */
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if (timer485 != RT_NULL)
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rt_timer_start(timer485);
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return ret;
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}
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/* 导出到 msh 命令列表中 */
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//MSH_CMD_EXPORT(uart485_dma_sample,uart485_dma_sample);
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INIT_APP_EXPORT(uart485_dma_sample);
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MSH_CMD_EXPORT(dumpBattInfo,解析电池信息);
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