Mark's 物聯網世界-萬物皆可控: nodemcu

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2015年8月30日星期日

主要差異:

Devkit 0.9與1.0腳位定義有差異,主因是因為ESP-12E多了6支引腳
NodeMcu Devkit 1.0 = ESP-12E + CP2102
NodeMcu Devkit 0.9 = ESP-12 + CH340G

外觀比較:

NodeMcu Devkit 0.9

NodeMcu Devkit 1.0

腳位比較

主要差異在於ESP-12E 多引出了6根腳,所以Devkit 1.0 也跟著引出這6根腳位

NodeMcu Devkit 0.9

NodeMcu Devkit 1.0

2015年4月9日星期四

夏令時間- 維基百科，自由的百科全書 - Wikipedia

2015年4月8日星期三

NodeMCU - uploader and file module

file module

file.remove
file.open
file.close
file.readline
file.writeline
file.read
file.write
file.flush
file.seek
file.list
file.format
file.rename

nodemcu-uploader.py

A simple tool for uploading files to the filesystem of an ESP8266 running NodeMCU as well as some other useful commands.

Usage

--port and --baud are set to default /dev/ttyUSB0 and 9600 respectively.


mark@mark-laptop:~/nodemcu-uploader-master$ sudo ./nodemcu-uploader.py --port /dev/ttyUSB3 file format
Formating...
file.format()

mark@mark-laptop:~/nodemcu-uploader-master$ sudo ./nodemcu-uploader.py --port /dev/ttyUSB3 upload init.lua
Preparing esp for transfer.
Transfering init.lua as init.lua
All done!

mark@mark-laptop:~/nodemcu-uploader-master$ sudo ./nodemcu-uploader.py --port /dev/ttyUSB3 file list
Listing files
for key,value in pairs(file.list()) do print(key,value) end
init.lua    32
> 

mark@mark-laptop:~/nodemcu-uploader-master$ sudo ./nodemcu-uploader.py --port /dev/ttyUSB3 download init.lua:new.lua
Transfering init.lua to new.lua
All done!

註: 燒錄新版 Firmware後 ,先前所放入的lua file會依然存在,不會被覆蓋,僅nodemcu firmware
被更新....

mark@mark-laptop:~/esptool$ sudo ./esptool.py --port /dev/ttyUSB0 read_mac
Connecting...
MAC: 18:fe:34:9e:99:29
mark@mark-laptop:~/esptool$ sudo ./esptool.py --port /dev/ttyUSB0 flash_id
Connecting...
Manufacturer: ef
Device: 4016

2015年4月1日星期三

NodeMCU固件- node/wifi/net/uart module

參考連結: NodeMCU API指令

node module

node.led --deprecated
node.key --deprecated

node.readvdd33 --deprecated

node.input
node.output
node.compile
node.info
node.chipid
node.flashid
node.heap
node.restart

> print(node.info())
0 9 6 10492404 1458415 4096 2 40000000
==>SDK Version : 0.9.6
==>chipid : 10492494
==>flashid:1458415 (0x1640EF) 0xEF代表Winbond , 0x4016對應32Mbits
==>flashsize=4096 KBytes
==>flashmode=2 (DIO)

==>flashspeed=40000000 (40MHz)

http://code.coreboot.org/svn/flashrom/trunk/flashchips.h



::1458400 (0x1640E0) => 32Mbits

::1458415 (0x1640EF) => 32Mbits

#define WINBOND_NEX_ID  0xEF /* Winbond (ex Nexcom) serial flashes */

#define WINBOND_NEX_W25Q32_V 0x4016 /* W25Q32BV; W25Q32FV in SPI mode (default) */



::1327343 (0x1440EF) => 8Mbits
#define WINBOND_NEX_W25Q80_V 0x4014 /* W25Q80BV */

::1261768 (0x1340C8) => 4Mbits

#define GIGADEVICE_ID  0xC8 /* GigaDevice */

#define GIGADEVICE_GD25Q40 0x4013 /* Same as GD25QB */

> print(node.heap())
34288
>
==>剩餘可用memory : 34288 Bytes

wifi module

wifi.getmode
wifi.setmode
wifi.startsmart
wifi.stopsmart
wifi.sleeptype

wifi.sta module

wifi.sta.config
wifi.sta.connect
wifi.sta.disconnect
wifi.sta.autoconnect
wifi.sta.getip
wifi.sta.getmac
wifi.sta.setip
wifi.sta.getap : scan and get AP list
wifi.sta.status
wifi.stat.getbroadcast

wif.iap module

wifi.ap.config
wifi.ap.getip
wifi.ap.setip
wifi.ap.getmac
wifi.ap.setmac
wifi.ap.getbroadcast

uart module

baud = 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 74880, 115200, 230400, 460800, 921600, 1843200, 2686400.
~~心得: Baud Rate可以儘量設高點,太低有時Lua command出錯"~~
~~> print("Heap=".. node.heap())~~
~~tmr.delay(1000)~~
~~print(no>> de.info())~~

~~stdin:2: ')' expected (to close '(' at line 1) near 'de'~~
~~由上看出,若輸出不夠快則輸入值會影響輸輸入,此應該是Lua的Bug吧!!!!!????(待查證)~~

註: 各廠USB-Serial不見得支援所有Baud Rate, 例如PL2303 在Ubuntu12.04下不支援 1843200 及2686400,不知是硬體~~還是軟體~~限制?
補充: 同樣Ubuntu環境用FT232RL可設達2686400, 貴一點還是值得的......
補充: 同樣Ubuntu環境用CH341不支援 1843200 及2686400
setup uart in init.lua
>print(uart.setup(0,921600,8,0,1,1))
921600

uart.setup
uart.on
uart.write

https://github.com/nodemcu/nodemcu-firmware/issues/15
https://github.com/nodemcu/nodemcu-firmware/issues/57

等待資料接收,最大可設255 Bytes, 下面範例為接收4個bytes

uart.on("data", 4, 
      function(data)
        print("receive from uart:", data)
        if data=="quit" then 
          uart.on("data") 
        end        
    end, 0)
    -- when '\r' is received.
    uart.on("data", "\r", 
      function(data)
        print("receive from uart:", data)
        if data=="quit\r" then 
          uart.on("data") 
        end        
    end, 0)

net module

net.createServer
net.createConnection

net.server module
net.server:listen
net.server.stop

net.socket module
net.socket:connect
net.socket.send
net.socket.on
net.socket.close
net.socket.dns

----------------------------------------------------------------------------------------------------------------

>wifi.setmode(wifi.SOFTAP)
>print(wifi.getmode())
2
>print(node.chipid())
10393897
>print("ESP_"..string.format("%X",node.chipid()))
ESP_9E9929
>print(wifi.ap.getip())
192.168.4.1 255.255.255.0 192.168.4.1
>print(wifi.ap.getbroadcast())
192.168.4.255

NodeMCU 的SoftAp Name= ESP_XXXXXX 聯入(XXXXXX表示ChipID) , 預設:不需密碼

NodeMCU硬件- NodeMCU Devkit

參考資料來源:
https://github.com/nodemcu/nodemcu-devkit

Devkit 0.9與1.0腳位定義有差異,主因是因為ESP-12E多了6支引腳

Devkit 0.9 : ESP-12 + CH340G
DEVKIT

Devkit 1.0 : ESP-12E + CP2102

https://raw.githubusercontent.com/nodemcu/nodemcu-devkit/master/Documents/NODEMCU_DEVKIT_SCH.png

node.key : --deprecated
node.led : --deprecated
node.readvdd33 : --deprecated, moved to adc.readvdd33()

node.dsleep()

描述

进入睡眠模式，计时时间之后唤醒

语法

node.dsleep(us)

-注意: 如需使用此功能，需要将esp8266的PIN32(RST)和PIN8(XPD_DCDC)短接。

NodeMCU固件- i2C/SPI/Uart/1-wire控制

參考連結: NodeMCU API指令

https://github.com/nodemcu/nodemcu-firmware/tree/84a9ab35a8eb9b4ae2229bba7b2626c2a285818d/app/driver

I2C

    id=0
    sda=1
    scl=2

    -- initialize i2c, set pin1 as sda, set pin2 as scl
    i2c.setup(id,sda,scl,i2c.SLOW)

    -- user defined function: read from reg_addr content of dev_addr
    function read_reg(dev_addr, reg_addr)
      i2c.start(id)
      i2c.address(id, dev_addr ,i2c.TRANSMITTER)
      i2c.write(id,reg_addr)
      i2c.stop(id)
      i2c.start(id)
      i2c.address(id, dev_addr,i2c.RECEIVER)
      c=i2c.read(id,1)
      i2c.stop(id)
      return c
    end

    -- get content of register 0xAA of device 0x77
    reg = read_reg(0x77, 0xAA)
    print(string.byte(reg))

UART

    -- when 4 chars is received.
    uart.on("data", 4, 
      function(data)
        print("receive from uart:", data)
        if data=="quit" then 
          uart.on("data") 
        end        
    end, 0)
    -- when '\r' is received.
    uart.on("data", "\r", 
      function(data)
        print("receive from uart:", data)
        if data=="quit\r" then 
          uart.on("data") 
        end        
    end, 0)

1-Wire

-- 18b20 Example
pin = 9
ow.setup(pin)
count = 0
repeat
  count = count + 1
  addr = ow.reset_search(pin)
  addr = ow.search(pin)
  tmr.wdclr()
until((addr ~= nil) or (count > 100))
if (addr == nil) then
  print("No more addresses.")
else
  print(addr:byte(1,8))
  crc = ow.crc8(string.sub(addr,1,7))
  if (crc == addr:byte(8)) then
    if ((addr:byte(1) == 0x10) or (addr:byte(1) == 0x28)) then
      print("Device is a DS18S20 family device.")
        repeat
          ow.reset(pin)
          ow.select(pin, addr)
          ow.write(pin, 0x44, 1)
          tmr.delay(1000000)
          present = ow.reset(pin)
          ow.select(pin, addr)
          ow.write(pin,0xBE,1)
          print("P="..present)  
          data = nil
          data = string.char(ow.read(pin))
          for i = 1, 8 do
            data = data .. string.char(ow.read(pin))
          end
          print(data:byte(1,9))
          crc = ow.crc8(string.sub(data,1,8))
          print("CRC="..crc)
          if (crc == data:byte(9)) then
             t = (data:byte(1) + data:byte(2) * 256) * 625
             t1 = t / 10000
             t2 = t % 10000
             print("Temperature="..t1.."."..t2.."Centigrade")
          end                   
          tmr.wdclr()
        until false
    else
      print("Device family is not recognized.")
    end
  else
    print("CRC is not valid!")
  end
end

SPI
id: spi id number.
mode: MASTER or SLAVE(not supported yet).
cpol: CPOL_LOW or CPOL_HIGH, clock polarity.
cpha: CPHA_HIGH or CPHA_LOW, clock phase.
databits: DATABITS_8 or DATABITS_16.
clock: spi clock (not supported yet).

2015年3月31日星期二

NodeMCU固件-GPIO/ADC/PWM控制

參考連結: NodeMCU API指令

包括有下列Module:
node
file
wifi
wifi.sta
wifi.ap
timer
gpio
pwm
net
net server
net socket
i2c
adc
uart
1-wire
bit
spi
mqtt
mqtt client

NodeMCU 的 GPIO Pin 對應 ESP8266 GPIO Pin看連結說明.

NodeMCU 的 GPIO Module定義了12個GPIO Pin,對應如下:

IO index	ESP8266 pin	IO index	ESP8266 pin
0 [*]	GPIO16	7	GPIO13 (Color Blue)
1	GPIO5	8	GPIO15 (Color Red)
2	GPIO4	9	GPIO3
3	GPIO0	10	GPIO1
4	GPIO2	11	GPIO9
5	GPIO14	12	GPIO10
6	GPIO12(Color Green)

** [] D0(GPIO16) can only be used as gpio read/write. no interrupt supported. no pwm/i2c/ow supported. *

GPIO16=0
GPIO5=1
GPIO4=2
GPIO0=3

GPIO2=4
GPIO14=5

GPIO12=6
GPIO13=7
GPIO15=8
GPIO3=9

GPIO1=10
GPIO9=11

GPIO10=12

//亮Red ,暗Green,暗Blue

gpio.mode(GPIO15, gpio.OUTPUT) gpio.write(GPIO15,1) -- Red on

gpio.mode(GPIO12, gpio.OUTPUT) gpio.write(GPIO12,0) -- Green off

gpio.mode(GPIO13, gpio.OUTPUT) gpio.write(GPIO13,0) -- Blue off

關於GPIO Module說明

範例: (Pin index=0~12)

>gpio.mode(4, gpio.OUTPUT)
>gpio.write(4, gpio.LOW) --點亮GPIO2 LED
>print(gpio.read(4))

0
>gpio.write(4,gpio.HIGH) --關掉GPIO2 LED
>print(gpio.read(4))

1
>

關於ADC Module說明

測試板ADC是接光敏電阻,越暗,阻值越大,電壓越大,所讀ADC數值就會越大

範例:

>print(adc.read(0)) --暗

256
>print(adc.read(0)) --亮

0

讀Vdd33電壓
>print(adc.readvdd33()/1000) --read vdd voltage

2.944

關於PWM Module說明
Only 3 pins can be set to PWM mode at the most.

pin: 1~12, IO index
duty: 0~1023, pwm duty cycle, max 1023(10bit).
範例:

    -- D6 is connected to green led (ESP8266 GPIO15)
    -- D7 is connected to blue led (ESP8266 GPIO12)
    -- D8 is connected to red led (ESSP8266 GPIO13)
    pwm.setup(6,500,512)
    pwm.setup(7,500,512)
    pwm.setup(8,500,512)
    pwm.start(6)
    pwm.start(7)
    pwm.start(8)
    function led(r,g,b)
      pwm.setduty(6,g)
      pwm.setduty(7,b)
      pwm.setduty(8,r)
    end
    led(512,0,0) --  set led to red
    led(0,0,512) -- set led to blue.

燒錄NodeMCU固件-安信可ESP-12測試板

有關 NodeMCU 的相關連結如下:

官網: http://nidemcu.com/

Popular repositories

nodemcu-firmware572 lua based interactive firmware for mcu like esp8266
NodeMCU Firmware 源碼
nodemcu-flasher58 A firmware Flash tool for nodemcu
此Windows工具用於將NodeMCU Firmware更新至NodeMCU開發板上.
nodemcu-devkit38 A development kit for NodeMCU firmware
包含Nodemcu 開發板的相關資訊,開發板=CH340G + ESP8266
nodemcu-studio-csharp5 a tool written in C# to upload lua file to nodemcu
nodemcu-ide2 a cross platform editor and download tool for nodemcu

最新NodeMCU最新固件下載位址:
https://github.com/nodemcu/nodemcu-firmware/releases

20150901補充 : 有float及 integer兩種版本binary... (keyword : LUA_NUMBER_INTEGRAL)
integer vs float version : integer version only support integer as lua number (less memory usage)

Numbers - Lua

針對Windows用戶的NodeMCU Firmware燒錄步驟:

1.將GPIO0 拉LOW(將短路帽接上) ,執行NodeMCU Flasher ( Win32 , Win64)程式,接著設定正確的Com Port ,並按下"Flash" Button.

Begin program

2.等候片刻

3.顯示現在的Firmware Mac Address 設定

Program success

4.此時,可設定你想燒錄的檔案.

Setting

20150908補充:燒錄時請儘量連接至電腦的USB Port,就是不經過其他Hub,若使用由外部USB Hub接出的Port,會有無法燒錄或燒錄失敗的可能....

燒錄完成後記得GPIO0回復為High(Normal mode),
Baud Rate設成9600 , Reset and reboot 後,會看到如下輸出......

訂閱：文章 (Atom)

Mark's 物聯網世界-萬物皆可控

2015年8月30日星期日

ESP8266相關開發板

NodeMcu Devkit 0.9/1.0 開發版差異

主要差異:

外觀比較:

腳位比較

2015年4月9日星期四

NodeMCU - NTP Client

鳥哥的Linux 私房菜-- NTP 時間伺服器

NTP 伺服器位址 - 國家時間與頻率標準實驗室

NTP - Wikipedia

夏令時間- 維基百科，自由的百科全書 - Wikipedia

2015年4月8日星期三

NodeMCU - uploader and file module

Usage

2015年4月1日星期三

NodeMCU固件- node/wifi/net/uart module

NodeMCU硬件- NodeMCU Devkit

node.dsleep()

描述

语法

NodeMCU固件- i2C/SPI/Uart/1-wire控制

2015年3月31日星期二

NodeMCU固件-GPIO/ADC/PWM控制

燒錄NodeMCU固件-安信可ESP-12測試板

Popular repositories

Numbers - Lua

2015年8月30日 星期日

主要差異:

外觀比較:

腳位比較

2015年4月9日 星期四

2015年4月8日 星期三

Usage

2015年4月1日 星期三

node.dsleep()

描述

语法

2015年3月31日 星期二

Popular repositories

2015年8月30日星期日

2015年4月9日星期四

2015年4月8日星期三

2015年4月1日星期三

2015年3月31日星期二