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[Photo of the Author]
by Guido Socher (homepage)

锟斤拷锟斤拷锟斤拷锟斤拷:

Guido喜锟斤拷Linux锟斤拷锟斤拷为锟斤拷锟节匡拷锟斤拷锟皆硷拷锟斤拷硬锟斤拷锟斤拷说Linux确实锟斤拷一锟斤拷锟角筹拷锟矫碉拷系统锟斤拷


目录:

 

一锟斤拷锟斤拷锟斤拷锟铰度计伙拷锟斤拷锟斤拷atmel微锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷I2C通锟斤拷

[Illustration]

摘要:

Atmel锟斤拷Atmega8微锟斤拷锟斤拷锟斤拷锟叫筹拷锟斤拷锟斤拷锟斤拷趾锟侥ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷锟竭★拷 锟斤拷锟节匡拷锟斤拷锟轿猴拷锟斤拷锟斤拷牟锟斤拷锟斤拷璞革拷锟剿碉拷锟饺肥碉拷锟揭伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷篇锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷尾锟绞癸拷枚锟斤拷锟斤拷MAX232芯片锟斤拷只通锟斤拷锟斤拷锟斤拷锟斤拷RS232锟接匡拷锟斤拷锟斤拷微锟斤拷锟斤拷锟斤拷锟斤拷Linux PC.

_________________ _________________ _________________

 

锟斤拷锟斤拷

锟斤拷锟斤拷篇锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟�my "Programming the AVR microcontroller with GCC, libc 1.0.4" article锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷GCC AVR锟斤拷袒锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷獍沧帮拷锟斤拷榉筹拷愕比伙拷锟斤拷锟绞癸拷锟絫he AVR programming CD (from http://shop.tuxgraphics.org/锟斤拷 )


锟斤拷锟斤拷使锟斤拷锟斤拷么锟饺斤拷锟斤拷锟斤拷锟斤拷锟斤拷为一锟斤拷微锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷模锟斤拷锟斤拷锟斤拷锟斤拷藕锟绞憋拷锟� 锟斤拷隙锟斤拷锟揭恍╋拷涌锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷莼锟斤拷叨锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷睢� 锟斤拷前锟斤拷锟斤拷锟节此凤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷通锟斤拷微锟斤拷锟斤拷锟斤拷锟叫碉拷UART锟斤拷使锟斤拷RS232锟斤拷锟斤拷通锟脚★拷 锟斤拷锟斤拷锟斤拷锟斤拷锟街凤拷式锟斤拷要一锟斤拷锟斤拷锟斤拷锟組AX232芯片锟斤拷4锟斤拷锟斤拷锟斤拷牡锟斤拷锟斤拷锟斤拷锟� 锟斤拷锟解，Atmel锟斤拷锟斤拷锟介：UART通锟脚的可匡拷锟斤拷锟斤拷锟斤拷锟斤拷要一锟斤拷锟解部锟斤拷锟斤拷 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷要锟矫讹拷亩锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷强锟斤拷锟斤拷锟届法锟斤拷锟斤拷使锟斤拷锟斤拷锟角★拷

PC锟斤拷微锟斤拷锟斤拷锟斤拷之锟斤拷锟斤拷锟斤拷锟酵碉拷锟斤拷锟斤拷锟斤拷通锟斤拷锟斤拷锟劫ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷锟街节ｏ拷锟斤拷 锟斤拷锟斤拷俣锟揭伙拷愣硷拷锟斤拷锟揭拷锟斤拷锟斤拷使锟斤拷I2C锟斤拷锟竭ｏ拷协锟介）锟角筹拷锟绞猴拷锟斤拷锟筋工锟斤拷锟斤拷

I2C锟斤拷I2C锟斤拷锟斤拷锟斤拷I锟斤拷C锟斤拷英锟斤拷锟斤拷锟絜ye-square-see锟斤拷锟斤拷一锟斤拷双锟斤拷双锟斤拷锟酵拷沤涌凇锟� 锟斤拷锟斤拷锟缴凤拷锟斤拷锟街癸拷司锟斤拷锟斤拷模锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟揭诧拷艿锟斤拷锟斤拷锟斤拷锟� 锟斤拷也锟斤拷为什么锟斤拷锟斤拷锟侥筹拷锟教讹拷同一锟斤拷协锟斤拷使锟矫诧拷同锟斤拷锟斤拷锟街★拷 Ateml锟斤拷I2C锟斤拷TWI锟斤拷Two Wire Interface锟斤拷双锟竭接口ｏ拷锟斤拷

锟斤拷锟角好讹拷锟剿匡拷锟杰诧拷知锟斤拷锟斤拷锟斤拷锟角的碉拷锟斤拷锟斤拷锟窖撅拷使锟斤拷锟斤拷I2C锟斤拷锟竭★拷 锟斤拷锟斤拷锟斤拷锟叫碉拷锟斤拷锟斤拷锟较讹拷锟斤拷一锟斤拷I2C锟斤拷锟斤拷锟斤拷锟斤拷取锟铰度★拷锟斤拷锟斤拷转锟斤拷锟皆硷拷锟斤拷锟矫碉拷锟节达拷锟斤拷锟斤拷锟饺碉拷锟斤拷锟叫碉拷硬锟斤拷锟斤拷息锟斤拷 锟斤拷锟揭碉拷锟斤拷锟斤拷一I2C锟斤拷锟竭诧拷锟斤拷锟斤拷锟斤拷PC锟解部锟斤拷没锟斤拷锟斤拷锟斤拷锟侥接诧拷锟斤拷锟斤拷锟� 锟斤拷锟斤拷锟斤拷锟角得凤拷锟斤拷一些锟铰的凤拷锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷TWI锟斤拷锟斤拷一锟斤拷锟斤拷锟街斤拷I2C锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟侥★拷  

I2C/TWI锟斤拷喂锟斤拷锟斤拷锟�

实锟斤拷锟斤拷Atmega8锟斤拷锟捷憋拷锟斤拷锟轿硷拷锟轿匡拷锟斤拷锟较ｏ拷锟接碉拷160页锟斤拷锟斤拷锟斤拷锟揭伙拷锟斤拷浅锟斤拷锟较革拷锟斤拷锟斤拷锟斤拷锟� 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷只锟结供一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟接︼拷锟斤拷锟斤拷锟斤拷锟斤拷荼锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟侥匡拷恕锟�

锟斤拷I2C锟斤拷锟斤拷锟斤拷锟杰伙拷锟斤拷一锟斤拷锟斤拷锟借备锟斤拷一锟斤拷锟津几革拷锟斤拷锟借备锟斤拷锟斤拷锟借备锟斤拷始锟斤拷通锟脚诧拷锟斤拷锟斤拷时锟接★拷 锟斤拷锟竭碉拷锟斤拷锟斤拷锟竭分憋拷锟絊DA锟斤拷锟斤拷锟斤拷锟竭ｏ拷锟斤拷SCL锟斤拷时锟斤拷锟竭ｏ拷锟斤拷 锟斤拷锟斤拷锟较碉拷每一锟斤拷锟借备锟斤拷锟斤拷锟叫讹拷锟斤拷锟侥碉拷源锟斤拷锟斤拷锟斤拷统锟斤拷RS232通锟斤拷锟斤拷同锟斤拷锟斤拷 通锟斤拷锟斤拷锟斤拷锟竭讹拷通锟斤拷4.7K锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟接碉拷锟竭硷拷锟竭碉拷平锟较ｏ拷锟斤拷锟斤拷5V锟斤拷IC锟斤拷 +5V锟斤拷锟斤拷 锟斤拷透锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷璞革拷锟侥★拷锟斤拷锟斤拷锟接★拷 锟斤拷一锟斤拷锟借备锟诫传锟酵★拷0锟斤拷时只锟斤拷要锟斤拷一锟斤拷锟竭接地硷拷锟缴ｏ拷锟斤拷锟竭达拷锟酵★拷1锟斤拷时锟斤拷锟街高碉拷平锟斤拷

锟斤拷锟斤拷锟斤拷每一锟斤拷锟借备锟斤拷锟斤拷一锟斤拷7位锟斤拷唯一锟斤拷址锟斤拷 锟斤拷锟借备通锟斤拷锟酵筹拷一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷始状态锟斤拷锟斤拷模式锟斤拷锟斤拷始一锟斤拷通锟脚ｏ拷 然锟斤拷锟劫讹拷锟斤拷锟斤拷锟斤拷实锟斤拷璞革拷锟斤拷锟窖爸凤拷锟� 锟斤拷锟斤拷锟斤拷锟借备锟酵筹拷一锟斤拷锟斤拷锟斤拷锟斤拷说锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟叫达拷锟斤拷荨锟� 锟斤拷锟借备锟斤拷锟斤拷一锟斤拷应锟斤拷位锟斤拷ack-bit锟斤拷锟斤拷示锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟借备锟斤拷锟绞裁达拷锟� 锟斤拷锟斤拷之锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟较匡拷锟斤拷锟斤拷9锟斤拷锟斤拷锟截碉拷锟斤拷锟捷ｏ拷7位锟斤拷址锟斤拷+一锟斤拷锟斤拷写位+一锟斤拷应锟斤拷位锟斤拷锟斤拷 
| start | 7-bit slave adr | read_data bit | wait for ack | ... data comes here
然锟斤拷锟斤拷什么锟斤拷

锟斤拷一锟斤拷锟斤拷锟角就匡拷锟斤拷锟秸凤拷锟斤拷锟斤拷锟剿★拷锟斤拷锟酵碉拷锟斤拷锟斤拷锟斤拷锟斤拷8锟斤拷锟截ｏ拷一锟斤拷锟街节ｏ拷锟侥憋拷锟斤拷锟斤拷锟揭憋拷锟斤拷锟秸碉拷应锟斤拷位锟斤拷 锟斤拷锟戒话说锟斤拷锟斤拷锟较碉拷锟斤拷锟斤拷锟斤拷锟角帮拷9锟斤拷锟截的帮拷锟斤拷锟酵的★拷通锟脚斤拷锟斤拷锟斤拷锟斤拷锟借备锟斤拷锟斤拷锟酵筹拷一锟斤拷锟斤拷停止状态锟斤拷锟斤拷 也锟斤拷锟斤拷说锟斤拷锟斤拷锟借备锟斤拷锟秸达拷锟借备锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷时锟斤拷锟斤拷锟斤拷知锟斤拷锟斤拷锟酵碉拷锟斤拷锟斤拷锟斤拷锟斤拷 锟斤拷为锟斤拷锟斤拷锟斤拷锟斤拷没锟叫拷锟斤拷写锟斤拷锟斤拷锟揭伙拷锟较拷锟斤拷锟斤拷锟斤拷锟揭诧拷锟斤拷锟斤拷锟绞裁达拷锟斤拷狻� 锟斤拷锟斤拷锟斤拷锟角匡拷锟斤拷使锟矫憋拷示锟街凤拷锟斤拷锟斤拷锟斤拷锟侥★拷0锟斤拷锟街斤拷锟斤拷锟斤拷锟斤拷没锟斤拷锟斤拷锟斤拷锟斤拷要锟斤拷锟斤拷锟剿★拷

锟斤拷SCL为锟斤拷1锟斤拷时SDA锟斤拷锟较碉拷锟斤拷锟斤拷锟斤拷锟斤拷效锟侥★拷锟界： 
SDA H -\       /---\     /---\          /---\
    L   \-----/     \---/     \--------/     \------....

SCL H ----\     /-\       /-\     /-\    /-\    /-\
    L      \---/   \-----/   \---/   \--/   \--/   \-....


  | START |      1 |       1 |     0 |    1 |    0 |
使锟斤拷锟斤拷一协锟斤拷锟揭伙拷锟斤拷么锟斤拷锟斤拷锟斤拷锟斤拷遣锟斤拷锟揭拷锟饺凤拷锟酵拷锟绞憋拷锟斤拷藕拧锟� 锟斤拷时锟斤拷锟脚猴拷锟斤拷一锟姐抖锟斤拷时协锟介还锟斤拷锟皆癸拷锟斤拷锟斤拷

锟较革拷锟剿碉拷锟斤拷锟揭伙拷锟斤拷锟绞癸拷锟斤拷锟斤拷强锟斤拷锟绞癸拷锟揭伙拷锟斤拷没锟斤拷占锟侥筹拷锟斤拷锟斤拷实锟斤拷I2C协锟介， 锟斤拷锟斤拷锟斤拷要锟节猴拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷囟锟斤拷锟接诧拷锟斤拷锟斤拷锟経ART锟斤拷锟斤拷锟角筹拷锟斤拷锟角吧ｏ拷  

锟狡伙拷

锟斤拷锟斤拷锟斤拷前锟斤拷锟斤拷锟斤拷锟斤拷锟角诧拷锟斤拷使锟斤拷PC锟斤拷锟节诧拷I2C锟斤拷锟竭ｏ拷 锟斤拷锟斤拷锟斤拷锟角匡拷锟斤拷使锟斤拷锟轿猴拷锟解部锟接匡拷锟斤拷锟秸凤拷锟斤拷锟斤拷锟斤拷锟斤拷锟捷憋拷锟斤拷锟斤拷锟斤拷 锟斤拷锟斤拷锟斤拷锟角斤拷使锟斤拷锟斤拷锟斤拷PC锟较碉拷RS232硬锟斤拷锟接口★拷 锟斤拷锟戒话说锟斤拷锟斤拷锟斤拷然使锟矫革拷锟斤拷前锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷同锟斤拷通锟脚接口ｏ拷 锟斤拷锟斤拷锟斤拷锟斤拷省锟斤拷锟斤拷MAX232硬锟斤拷锟酵碉拷锟斤拷锟斤拷锟饺等★拷

锟斤拷然锟斤拷锟斤拷锟窖的诧拷锟斤拷锟角达拷头实锟斤拷I2C协锟介，锟揭伙拷锟斤拷锟斤拷锟斤拷艿锟绞憋拷锟窖帮拷偷锟斤拷浴锟� 锟斤拷锟斤拷锟斤拷锟斤拷锟窖撅拷锟斤拷锟斤拷耍锟斤拷锟斤拷锟斤拷直锟斤拷COPY锟斤拷:-)锟斤拷锟斤拷只希锟斤拷锟斤拷锟斤拷使锟斤拷锟斤拷些锟斤拷锟斤拷锟绞憋拷锟斤拷芗锟阶★拷锟斤拷堑募锟街碉拷锟�

锟斤拷为一锟斤拷示锟斤拷锟斤拷锟斤拷锟斤拷锟角斤拷锟斤拷锟斤拷一锟斤拷锟铰度计★拷锟斤拷然锟斤拷也锟斤拷锟皆诧拷锟斤拷锟斤拷锟斤拷锟侥讹拷锟斤拷锟斤拷锟斤拷锟斤拷只锟斤拷锟斤拷锟斤拷锟斤拷锟截碉拷啤锟� 锟角撅拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷恕锟�

锟斤拷锟斤拷一篇锟斤拷锟斤拷锟斤拷锟斤拷锟角斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟截碉拷液锟斤拷锟斤拷示锟斤拷锟斤拷 也锟斤拷锟斤拷说锟斤拷锟斤拷锟街憋拷哟锟揭猴拷锟斤拷锟绞撅拷锟斤拷隙锟斤拷锟斤拷露榷锟斤拷锟斤拷玫锟斤拷锟斤拷Linux PC锟斤拷去锟斤拷锟剿★拷 为锟剿诧拷使锟斤拷篇锟斤拷锟铰癸拷锟斤拷锟斤拷锟角斤拷锟斤拷锟斤拷一篇锟叫讹拷液锟斤拷锟斤拷示锟斤拷锟斤拷锟斤拷说锟斤拷锟斤拷
ntc
NTCs 锟斤拷锟叫★拷锟斤拷锟斤拷瞬锟斤拷锟斤拷愎蛔既�
 

The temperature sensor

锟斤拷锟斤拷锟斤拷业锟揭恍┬Ｗ硷拷锟斤拷锟斤拷露燃疲锟斤拷锟揭恍╋拷锟街э拷锟絀2C协锟斤拷模锟斤拷锟� 锟斤拷锟斤拷锟角讹拷锟杰癸拷NTCs锟饺较憋拷锟剿ｏ拷也锟角筹拷锟矫ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷要锟街癸拷校准锟斤拷 锟斤拷锟斤拷锟斤拷锟斤拷锟叫Ｗ家伙拷锟斤拷锟酵匡拷锟皆伙拷锟叫★拷锟斤拷锟斤拷木锟斤拷取锟�

NTCs锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷欠锟斤拷锟斤拷缘摹锟斤拷锟斤拷锟斤拷锟街伙拷锟揭伙拷锟斤拷氲硷拷锟斤拷锟斤拷锟斤拷锟斤拷猓� 锟斤拷锟斤拷只锟斤拷要锟揭碉拷锟斤拷锟绞的癸拷式锟斤拷锟斤拷锟斤拷锟皆碉拷锟斤拷锟竭碉拷锟斤拷一锟铰撅拷锟斤拷锟剿★拷 微锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷小锟酵硷拷锟斤拷锟斤拷锟斤拷锟揭恍╋拷锟窖э拷锟斤拷锟较讹拷没锟斤拷锟斤拷锟解。
ntc formula
T锟斤拷Tc锟斤拷锟斤拷锟斤拷锟斤拷要锟矫碉拷锟斤拷锟铰讹拷值锟斤拷Rn锟斤拷NTC锟斤拷25'C锟侥碉拷锟斤拷值锟斤拷锟斤拷锟斤拷锟斤拷锟� 4K锟斤拷7K锟饺等碉拷NTCs锟斤拷Rn锟斤拷锟斤拷锟斤拷些值锟斤拷
 

锟斤拷路

circuit diagram
锟斤拷路图锟斤拷锟斤拷锟叫⊥硷拷锟斤拷锟酵硷拷锟�
锟斤拷锟斤拷锟斤拷锟斤拷锟窖撅拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟斤拷锟铰度计碉拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷NTC锟斤拷锟斤拷锟斤拷锟斤拷 一锟斤拷锟斤拷锟节诧拷锟铰讹拷锟斤拷一锟斤拷锟斤拷锟解部锟铰度★拷锟斤拷锟斤拷锟揭拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟接ｏ拷锟饺凤拷说conn3锟斤拷PC2锟角匡拷锟叫的ｏ拷锟斤拷 锟揭诧拷希锟斤拷锟斤拷锟斤拷锟斤拷一篇锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷全锟铰的碉拷路锟斤拷 锟斤拷锟斤拷锟节碉拷路图锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷液锟斤拷锟斤拷示锟斤拷锟斤拷锟斤拷要锟侥硷拷锟斤拷锟竭★拷

锟斤拷锟芥还使锟斤拷锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷堋锟斤拷锟斤拷锟斤拷锟斤拷锟揭讹拷锟斤拷锟角伙拷锟斤拷锟侥碉拷锟斤拷确实锟斤拷锟斤拷锟矫★拷 锟斤拷锟界，锟斤拷锟节匡拷锟斤拷PC锟斤拷微锟斤拷锟斤拷锟斤拷锟斤拷锟絀2C通锟斤拷协锟斤拷时锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷I2C状态锟斤拷锟斤拷 锟斤拷锟斤拷锟斤拷锟斤拷时锟斤拷锟角匡拷锟斤拷锟斤拷锟斤拷锟斤拷烁锟斤拷锟皆憋拷锟斤拷锟铰度硷拷锟节癸拷锟斤拷锟斤拷

锟斤拷耍锟斤拷锟铰凤拷浅锟斤拷锟斤拷锟斤拷锟斤拷恕锟轿拷锟斤拷锟斤拷锟斤拷械锟侥ｏ拷锟阶拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絅TC锟侥碉拷压锟斤拷锟斤拷锟斤拷转锟斤拷锟斤拷锟铰讹拷值锟斤拷

锟斤拷锟斤拷模锟斤拷转锟斤拷锟斤拷使锟矫猴拷锟街参匡拷锟斤拷压锟斤拷Atmega8锟斤拷锟斤拷锟斤拷选锟筋：5V锟斤拷AVcc锟斤拷锟斤拷锟节诧拷锟斤拷2.56V锟斤拷 锟斤拷锟节诧拷锟斤拷锟斤拷锟角诧拷锟斤拷要锟斤拷锟解部锟斤拷锟斤拷锟斤拷锟斤拷露确锟轿э拷拇锟斤拷锟斤拷锟斤拷锟酵拷锟斤拷锟剿碉拷锟�+10'C锟斤拷+40'C锟斤拷锟姐够锟剿★拷 锟斤拷锟斤拷锟斤拷锟角就匡拷锟斤拷锟节诧拷锟斤拷锟节诧拷锟铰讹拷时使锟斤拷2.56V锟轿匡拷锟斤拷压锟斤拷 锟斤拷锟斤拷1024锟斤拷锟斤拷锟杰碉拷锟斤拷值锟斤拷锟斤拷锟斤拷锟斤拷锟戒到0锟斤拷2.56锟斤拷锟侥碉拷压锟斤拷锟斤拷锟较ｏ拷 锟斤拷锟角匡拷锟皆得碉拷锟角筹拷锟竭的撅拷锟饺ｏ拷2.5mV锟侥分憋拷锟绞ｏ拷锟饺达拷锟斤拷锟斤拷锟斤拷锟斤拷址锟斤拷乇锟斤拷锟斤拷撸锟斤拷锟�

RS232锟斤拷CD锟斤拷锟斤拷锟揭伙拷锟斤拷锟斤拷锟斤拷撸锟斤拷锟斤拷锟斤拷拥锟絀2C锟斤拷锟竭碉拷SDA锟斤拷锟较★拷锟斤拷锟角撅拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷微锟斤拷锟斤拷锟斤拷锟较讹拷取锟斤拷锟捷★拷 DTR锟斤拷RTS锟斤拷锟斤拷锟斤拷摺锟斤拷锟絇C锟斤拷SDA锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟轿皇憋拷涂锟斤拷锟紻TR锟斤拷 I2C锟斤拷锟借备锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷linux PC锟斤拷锟斤拷锟斤拷锟斤拷SCL锟斤拷时锟接ｏ拷锟竭★拷 也锟斤拷锟斤拷说时锟斤拷锟竭撅拷锟斤拷一锟斤拷RS232锟斤拷锟斤拷锟斤拷摺锟�

78L05锟斤拷锟斤拷锟结供一锟斤拷锟饺讹拷锟侥碉拷源锟酵参匡拷锟斤拷压锟斤拷锟斤拷锟斤拷锟绞癸拷锟斤拷魏锟�7.5V锟斤拷12V之锟斤拷慕锟街憋拷锟斤拷锟皆达拷锟� 9V锟斤拷一锟斤拷锟杰好碉拷选锟斤拷  

锟斤拷锟斤拷锟斤拷路锟斤拷

get this kit from the tuxgraphics shop
tuxgraphics.org锟斤拷锟斤拷锟斤拷锟叫憋拷锟斤拷锟斤拷锟矫碉拷锟斤拷元锟斤拷锟斤拷锟斤拷锟斤拷锟揭伙拷锟斤拷一锟斤拷锟斤拷蚀锟侥很好的碉拷路锟藉。
锟斤拷然锟斤拷也锟斤拷锟斤拷锟斤拷锟斤拷使锟斤拷锟斤拷前锟斤拷锟斤拷锟斤拷锟斤拷锟矫碉拷锟斤拷原始锟斤拷路锟藉，只锟斤拷锟斤拷锟铰斤拷LED锟斤拷锟斤拷pin-11锟较诧拷锟斤拷锟斤拷锟斤拷锟叫碉拷锟斤拷锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷锟揭伙拷锟斤拷每锟斤拷牡锟铰凤拷幕锟斤拷慊癸拷锟斤拷锟揭伙拷锟斤拷碌牡锟铰凤拷濉� 锟斤拷为锟斤拷路锟角筹拷锟斤拷锟接ｏ拷恰锟斤拷锟侥革拷蚀一锟斤拷印刷锟斤拷路锟斤拷锟斤拷要锟窖很达拷木锟斤拷锟斤拷锟� 锟斤拷锟斤拷Iznogood锟斤拷linuxfocus锟较癸拷锟斤拷gEDA锟斤拷锟斤拷锟斤拷之锟斤拷锟斤拷也锟斤拷锟斤拷使锟斤拷gEDA锟斤拷锟斤拷锟紼agle锟斤拷 gEDA锟侥革拷要锟斤拷图锟斤拷锟斤拷gschem锟角筹拷锟斤拷锟矫★拷锟斤拷锟斤拷锟斤拷Eagle锟斤拷锟斤拷锟斤拷一锟斤拷锟杰达拷锟皆拷锟斤拷锟斤拷趴猓� 锟斤拷锟揭诧拷锟矫诧拷为Atmega8锟斤拷锟斤拷锟斤拷些锟斤拷锟脚★拷锟斤拷锟斤拷锟角筹拷锟斤拷锟斤拷使锟矫诧拷锟揭革拷Eagle锟斤拷锟斤拷一锟斤拷锟矫★拷 锟斤拷微锟叫碉拷锟斤拷锟斤拷木锟斤拷腔锟斤拷锟絇CB锟侥癸拷锟斤拷pcb锟斤拷 锟斤拷锟斤拷沾锟紼agle转锟斤拷锟斤拷时锟斤拷锟斤拷锟饺会发锟斤拷元锟斤拷锟斤拷锟斤拷锟杰达拷锟金胶达拷锟较断匡拷锟斤拷 为锟斤拷确锟斤拷锟斤拷确锟斤拷锟金胶达拷锟斤拷锟接碉拷锟斤拷确锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟诫经锟斤拷锟斤拷锟斤拷 Connects->Optimize rats-nest 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟缴碉拷路图锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷路锟藉。 锟斤拷锟斤拷锟斤拷锟竭硷拷只锟斤拷锟街癸拷锟斤拷锟斤拷注锟解。 top view, position of components

锟斤拷使锟矫筹拷色图锟斤拷锟斤拷锟斤拷图锟斤拷锟斤拷知锟斤拷么锟斤拷牡锟斤拷锟接∈憋拷锟斤拷锟酵硷拷悴伙拷锟斤拷锟斤拷锟斤拷魏蔚锟斤拷锟斤拷锟斤拷 锟斤拷锟斤拷锟角筹拷色图锟斤拷实锟斤拷锟斤拷锟斤拷锟节帮拷锟斤拷锟斤拷锟斤拷元锟斤拷锟斤拷锟斤拷锟斤拷一锟芥。 锟斤拷锟斤拷锟斤拷锟斤拷锟揭伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷郑锟斤拷锟矫从★拷诘锟铰凤拷锟斤拷锟绞憋拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟� 锟斤拷锟斤拷锟斤拷只锟斤拷pcb锟斤拷锟斤拷锟斤拷锟侥诧拷锟街ｏ拷锟斤拷锟斤拷锟侥讹拷锟斤拷Gimp锟斤拷锟斤拷锟斤拷

锟斤拷谢shop.tuxgraphics.org 锟斤拷 锟斤拷锟角筹拷锟桔憋拷锟斤拷锟斤拷锟结到锟斤拷锟斤拷锟叫碉拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷涂锟斤拷锟阶ㄗ拷锟斤拷锟斤拷锟斤拷锟饺わ拷牟锟斤拷植锟斤拷锟斤拷猿晒锟斤拷锟阶帮拷锟斤拷路锟剿★拷  

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟揭伙拷锟絇utting everything together

锟斤拷锟斤拷装锟斤拷锟铰肥弊拷锟皆拷锟斤拷锟斤拷募锟斤拷锟斤拷欠浅锟斤拷锟揭拷模锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟� 锟斤拷锟斤拷锟杰★拷锟斤拷压锟斤拷锟斤拷锟杰★拷78L05锟斤拷LED锟斤拷微锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟叫硷拷锟皆的★拷

锟斤拷锟姐将微锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟街帮拷锟接︼拷锟斤拷燃锟斤拷锟斤拷源锟斤拷锟街★拷 锟斤拷锟斤拷锟皆达拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷悴伙拷锟斤拷貌锟斤拷锟斤拷锟饺凤拷亩锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锌锟斤拷锟斤拷栈锟轿拷锟斤拷锟斤拷锟斤拷锟� 锟斤拷锟斤拷锟斤拷锟斤拷锟揭伙拷锟斤拷锟皆达拷锟斤拷锟斤拷锟揭伙拷锟�9V锟侥碉拷兀锟斤拷玫锟窖癸拷锟斤拷锟揭伙拷拢锟饺凤拷锟斤拷锟斤拷锟轿拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟较得碉拷恰锟斤拷5V锟侥碉拷压锟斤拷 锟斤拷一锟斤拷锟酵把碉拷路锟接碉拷锟斤拷Linux PC锟斤拷RS232锟斤拷锟较ｏ拷 使锟矫革拷锟斤拷锟脚猴拷锟斤拷锟斤拷锟斤拷锟絠2c_rs232_pintest锟斤拷锟斤拷 
i2c_rs232_pintest -d 1 -c 1
i2c_rs232_pintest -d 0 -c 1
i2c_rs232_pintest -d 1 -c 0
锟矫筹拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷RS232锟斤拷锟絉TS锟斤拷锟斤拷锟斤拷SCL锟斤拷使锟斤拷-c选锟筋）锟斤拷DTR锟斤拷锟斤拷锟斤拷SDA锟斤拷使锟斤拷-d选锟筋）锟侥碉拷平值锟斤拷 RS232锟节的碉拷压锟斤拷约为+/-10V锟斤拷锟斤拷锟斤拷锟斤拷压锟斤拷锟斤拷锟斤拷之锟斤拷锟斤拷应锟斤拷只锟杰测到-0.7锟斤拷锟斤拷锟竭硷拷0锟斤拷锟斤拷+4-5V(锟竭硷拷1锟斤拷锟斤拷

只锟斤拷通锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷之锟斤拷锟斤拷懿锟斤拷锟轿拷锟斤拷锟斤拷锟斤拷锟�  

使锟斤拷I2C锟斤拷锟斤拷通锟斤拷

锟斤拷锟截ｏ拷锟轿硷拷锟轿匡拷锟斤拷锟较ｏ拷linuxI2Ctemp.tar.gz锟侥硷拷锟斤拷锟斤拷压锟斤拷I2C通锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟侥硷拷锟斤拷实锟街ｏ拷 
i2c_avr.c -- the i2c statemachine for the atmega8
i2c_m.c   -- the complete i2c protocol on the linux side
锟揭革拷锟斤拷atmega8锟接碉拷址3锟斤拷锟斤拷锟斤拷锟绞癸拷锟斤拷锟斤拷锟紺锟斤拷锟斤拷锟斤拷atmega8锟斤拷锟斤拷锟街凤拷锟斤拷锟斤拷hello锟斤拷锟斤拷 
address_slave(3,0); // tell the slave that we will send something
i2c_tx_string("hello");
i2cstop(); // release the i2c bus

on the microcontroller side you would receive this "hello" string with
i2c_get_received_data(rec_buf);
锟角筹拷锟津单ｏ拷锟斤拷微锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷也锟斤拷锟斤拷锟斤拷啤锟� 锟斤拷锟斤拷钥锟絠2ctemp_avr_main.c锟叫碉拷锟铰度讹拷锟斤拷锟斤拷锟斤拷么锟斤拷锟侥★拷  

锟铰讹拷锟角讹拷锟劫ｏ拷

锟斤拷锟诫并锟斤拷微锟斤拷锟斤拷锟斤拷装锟截达拷锟诫，直锟斤拷锟斤拷linuxI2Ctemp锟斤拷锟斤拷锟斤拷目录锟斤拷执锟斤拷锟斤拷锟斤拷锟斤拷锟筋： 
make
make load
锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷i2c_rs232_pintest锟斤拷i2ctemp_linux 
make i2c_rs232_pintest
make i2ctemp_linux
锟斤拷锟斤拷锟斤拷锟斤拷锟街憋拷锟绞癸拷锟絙in锟斤拷目录锟斤拷锟窖撅拷锟斤拷锟斤拷玫陌姹撅拷锟�

锟斤拷锟斤拷取锟铰度ｏ拷只锟斤拷要锟斤拷锟叫ｏ拷 
i2ctemp_linux
锟斤拷锟斤拷锟接★拷锟斤拷锟斤拷诤锟斤拷锟斤拷锟斤拷锟铰度★拷锟斤拷为I2C锟斤拷锟竭非筹拷锟斤拷锟斤拷 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟秸撅拷锟斤拷锟绞撅拷锟斤拷锟斤拷医锟斤拷椴灰憋拷锟斤拷锟絯eb锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷i2ctemp_linux锟斤拷 锟斤拷锟斤拷锟斤拷锟揭伙拷锟絚ron job锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟叫达拷锟揭伙拷锟紿TML锟侥硷拷锟叫★拷 锟斤拷linuxI2Ctemp锟斤拷锟叫碉拷README锟侥硷拷锟斤拷锟斤拷一锟斤拷示锟斤拷锟脚憋拷锟斤拷  

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I2C协锟介几锟斤拷锟斤拷锟斤拷要锟斤拷锟斤拷锟接诧拷锟斤拷锟斤拷锟斤拷锟斤拷丫锟轿拷辗锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷呕锟斤拷锟� 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷约锟斤拷锟轿拷锟斤拷锟斤拷锟斤拷锟斤拷锟酵拷牛锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟揭拷摹锟斤拷锟斤拷锟揭伙拷锟斤拷浅锟狡拷锟斤拷慕锟斤拷锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷篇锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷要锟斤拷锟斤拷锟斤拷硬锟斤拷锟斤拷锟斤拷锟较★拷锟斤拷锟斤拷锟较诧拷锟斤拷锟狡拷锟斤拷锟斤拷医锟斤拷锟叫匆黄拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟轿癸拷锟斤拷锟侥ｏ拷 锟截憋拷锟斤拷锟斤拷锟斤拷锟斤拷锟侥ｏ拷锟阶拷锟斤拷锟絀2C协锟斤拷锟斤拷锟斤拷锟绞碉拷值摹锟� 锟斤拷一篇锟斤拷锟斤拷锟斤拷锟斤拷也锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷液锟斤拷锟斤拷示锟斤拷锟皆硷拷锟斤拷锟较度猴拷锟斤拷锟较讹拷之锟斤拷锟阶拷锟斤拷锟�  

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锟斤拷锟斤拷篇锟斤拷锟铰凤拷锟斤拷锟斤拷锟斤拷

每篇锟斤拷锟铰讹拷锟叫革拷锟皆的凤拷锟斤拷页锟芥。锟斤拷锟斤拷锟揭筹拷锟斤拷铮拷锟斤拷锟斤拷锟斤拷峤伙拷锟斤拷郏锟揭诧拷锟斤拷圆榭达拷锟斤拷锟斤拷锟斤拷叩锟斤拷锟斤拷郏锟�
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