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资源说明：atmega project for turtle hibernation
Remote home supervision and control
ethernet remote device with a local sensirion sht11 sensor (humidity + temperature) and an outdoor ds18s20 temperature sensor. You should use a 4K7 or 10K pull-up resistor for the ds18s20 to use with cables longer that 15cm. The resistor goes between PD6 and Vcc. See http://tuxgraphics.org/electronics/ Copyright of most software and all diagrams: Guido Socher License for the web server software: GPL V2 See http://www.gnu.org/licenses/gpl.html Sensor connection SHT11 sensor: Sensor GND --- GND (available on the digital IO port of the web-server board) Sensor Vcc --- 3.3V (available on the digital IO port of the web-server board) Sensor SCK --- PB0 (digital IO port) Sensor Data --- PD0 (digital IO port) DS18S20 sensor: Sensor GND --- GND (available on the digital IO port of the web-server board) Sensor Data --- PD6 (digital IO port) Sensor Vcc --- 3.3V (available on the digital IO port of the web-server board) The length of the cable between sht11 sensor and ethernet board should be 0.6m (2foot) or less. If you add a 100nF capacitor at the sht11 sensor between Vcc and GND and a 10K pull-up resistor (between Vcc and Data) then you can extend the cable length (about 3m, 6foot, are possible). The length of the cable between ds18s20 sensor and ethernet board can easily be 10m (33foot).
All parts needed to build this AVR ethernet solution can be ordered from http://shop.tuxgraphics.org/Compiling the software
!! READ THIS FIRST !! --------------------- ! Edit the file main.c and change the 2 lines: ! static uint8_t mymac[6] = {0x54,0x55,0x58,0x10,0x00,0x29}; ! static uint8_t myip[4] = {10,0,0,29}; For the first device you build you will not need to change the mymac line. But you will probably need to change the IP address (myip). It must be a free address from the address range in your home network. Use an IP address in the same network as you DSL router. Example: you wlan router might have 192.168.1.1, your PC might have 192.168.1.2. This means you could e.g use 192.168.1.10 and leave some room for more PCs. Edit the beginning of the make file. And adjust those lines according to the CPU you use (atmega168 or atmega328p or atmega644): MCU=atmega168 DUDECPUTYPE=m168 or MCU=atmega328p DUDECPUTYPE=m328p or MCU=atmega644 DUDECPUTYPE=m644 Edit the avrdude command definition: # linux (plug in the avrusb500 and type dmesg to see which device it is): LOADCMD=avrdude -P /dev/ttyUSB0 # mac (plug in the programmer and use ls /dev/tty.usbserial* to get the name): LOADCMD=avrdude -P /dev/tty.usbserial-A9006MOb # windows (check which com-port you get when you plug in the avrusb500): LOADCMD=avrdude -P COM4 More information about Makefiles can be found at: http://tuxgraphics.org/electronics/200912/makefiles.shtml To compile the final software use the command: make Note: windows users may use and modify the supplied winmake.bat to setup the environment correctly. The above command will compile the following hex file: main.hexLoading the software into the board
The makefile included as well a command to load the hex file using avrusb500 in combination with avrdude. You may use your own method to load the file. make load The "make load" command will run something like: avrdude -p m168 -c stk500v2 -e -U flash:w:main.hex Note: your programmer might interfere with the enc28j60! If you use an avrusb500 then you can normally leave the cable on. For all other programmers it is saver to remove the programmer cable and power down/up the ethernet board. This is because the SPI interface is used for loading of the software and communication to the enc28j60. To see a list of all possible build targets run the command: make helpSelecting the right clock source
Tuxgraphics hardware sold as of march 2007 is prepared to use the clock signal from the enc28j60. To use this you need to change the low fuse byte once from 0x62 to 0x60: avrdude -p m168 -c stk500v2 -u -v -U lfuse:w:0x60:m or avrdude -p m328p -c stk500v2 -u -v -U lfuse:w:0x60:m or avrdude -p m644 -c stk500v2 -u -v -U lfuse:w:0x60:m The above command can as well be executed by using the make file. In a Linux shell you can just type: make fuse Note: windows users may use and modify the supplied winsetfuse.bat script. After programming the fuse settings of an atmega168 should be: low fuse: 0x60 high fuse: 0xdf ext. fuse: 0x01 For the atmega328p the hfuse and efuse bytes look slightly different. The idea is however the same. Just change the lfuse from factory default to 0x60. The fuse settings of the atmega328p are after programming should be as below (default factory settings for atmega328p, the efuse has some not used bits and is dependent on the chip revision): lfuse reads as 0x60 hfuse reads as 0xD9 efuse reads as 0x07 Fuses of the atmega644/atmega644a after programming: Device signature = 0x1e9609 lfuse reads as 60 hfuse reads as 99 efuse reads as FF details of the lfuse bits: CKDIV8 = 0 CKOUT = 1 SUT1 = 1 SUT0 = 0 CKSEL3 = 0 CKSEL2 = 0 CKSEL1 = 0 CKSEL0 = 0 If you are unsure what the current fuse setting are on the atmega then you can read the fuse settings with a command like: avrdude -p m168 -c stk500v2 -v -q The below list of fuses shows for reference purpose the settings of a new and never programmed chip. The result should be this (default factory settings for atmega168): lfuse reads as 62 hfuse reads as DF efuse reads as 1 The result should be this (default factory settings for atmega328p): lfuse reads as 62 hfuse reads as D9 efuse reads as 7 The result should be this (default factory settings for atmega644/atmega644a): Device signature = 0x1e9609 lfuse reads as 62 hfuse reads as 99 efuse reads as FFCompilation on non-Unix systems
Please use the provided Makefile !!! It will also work under Windows. Take a look at the supplied winmake.bat and winload.bat file. The bat script might be needed to set the environment correctly. Take a look at the supplied winmake.bat and winload.bat file. The bat script might be needed to set the environment correctly in order to use the Makefile under windows. Edit the Makefile to make the needed adjustments at the top of the file. More information about Makefiles can be found at: http://tuxgraphics.org/electronics/200912/makefiles.shtmlUsing the board to measure temperature and humidity
Point your web browser to http://10.0.0.29 (or what ever IP address you have given your hardware) You should get a web page like this: ________________________________________ [switch] [cfg] [graph] [refresh] Current conditions Indoor temp. : 22.3'C [72'F] humidity : 47% dew point: 9.8'C [49'F] Outdoor temp. : 8.6'C [47'F] ________________________________________ (c)tuxgraphicsRevision history
2009-10-25: version 3.4 -- first public version. Based on eth_rem_dev_sensirion-3.3.tar.gz 2009-10-31: version 3.5 -- update onewire code to not block. Update store graph function. Minor clean-up after code review. 2009-12-30: version 3.6 -- updated Makefile for mac and windows 2010-07-05: version 3.7 -- update for atmega644/atmega644a -- change clock compensation to be more precise # vim:sw=8:ts=8:si:et
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