| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103 |
- -- LuaTools需要PROJECT和VERSION这两个信息
- PROJECT = "uart_irq"
- VERSION = "1.0.0"
- log.info("main", PROJECT, VERSION)
- -- 引入必要的库文件(lua编写), 内部库不需要require
- sys = require("sys")
- if wdt then
- --添加硬狗防止程序卡死,在支持的设备上启用这个功能
- wdt.init(9000)--初始化watchdog设置为9s
- sys.timerLoopStart(wdt.feed, 3000)--3s喂一次狗
- end
- log.info("main", "uart demo")
- local uart_id = 1
- local uartid = 2 -- 根据实际设备选取不同的uartid
- local _uart485Pin = 18
- gpio.setup(_uart485Pin, 0, nil, nil, 4)
- -- --gpio.setup(18, 0, nil, nil, 4)
- --初始化
- -- 485自动切换, 选取GPIO10作为收发转换脚
- uart.setup(uart_id, 9600, 8, 1, uart.NONE)
- uart.setup(uartid, 9600, 8, 1, uart.NONE, uart.LSB, 1024, _uart485Pin, 0, 2000)
- -- uart.setup(uartid, 9600, 8, 1, uart.NONE)
-
- --循环发数据
- sys.timerLoopStart(uart.write,1000, uart_id, "test")
- sys.timerLoopStart(uart.write,1000, uartid, "test")
- -- 收取数据会触发回调, 这里的"receive" 是固定值
- sys.taskInit(function ()
- uart.on(uart_id, "receive", function(id, len)
- -- if uart_id ~= id then
- -- return
- -- end
- local s = ""
- repeat
- -- s = uart.read(id, 1024)
- s = uart.read(id, len)
- if #s > 0 then -- #s 是取字符串的长度
- -- 如果传输二进制/十六进制数据, 部分字符不可见, 不代表没收到
- -- 关于收发hex值,请查阅 https://doc.openluat.com/article/583
- log.info("uart", "receive", id, #s, s)
- -- log.info("uart", "receive", id, #s, s:toHex())
- end
- if #s == len then
- break
- end
-
- until s == ""
- end)
- end)
- sys.taskInit(function ()
-
- uart.on(uartid, "receive", function(id, len)
- -- if uartid ~= id then
- -- return
- -- end
- local s = ""
- repeat
- -- s = uart.read(id, 1024)
- s = uart.read(id, len)
- if #s > 0 then -- #s 是取字符串的长度
- -- 如果传输二进制/十六进制数据, 部分字符不可见, 不代表没收到
- -- 关于收发hex值,请查阅 https://doc.openluat.com/article/583
- log.info("uart", "receive", id, #s, s)
- -- log.info("uart", "receive", id, #s, s:toHex())
- end
- if #s == len then
- break
- end
-
- until s == ""
- end)
- end)
- -- 并非所有设备都支持sent事件
- uart.on(uart_id, "sent", function(id)
- log.info("uart", "sent", id)
- end)
- uart.on(uartid, "sent", function(id)
- log.info("uart", "sent", id)
- end)
- -- sys.taskInit(function()
- -- while 1 do
- -- sys.wait(500)
- -- end
- -- end)
- -- 用户代码已结束---------------------------------------------
- -- 结尾总是这一句
- sys.run()
- -- sys.run()之后后面不要加任何语句!!!!!
|