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