Uff something has eaten trailing spaces from patch. This version should work. I'm very sorry about this. Please apply following patch before the busses documentation update. This patch just moves the i2c-parport documentation to busses/ directory. Signed-off-by: Rudolf Marek <r.marek at sh.cvut.cz> diff -Naur g/Documentation/i2c/busses/i2c-parport h/Documentation/i2c/busses/i2c-parport --- g/Documentation/i2c/busses/i2c-parport 1970-01-01 01:00:00.000000000 +0100 +++ h/Documentation/i2c/busses/i2c-parport 2005-02-18 00:29:53.000000000 +0100 @@ -0,0 +1,156 @@ +================== +i2c-parport driver +================== + +2004-07-06, Jean Delvare + +This is a unified driver for several i2c-over-parallel-port adapters, +such as the ones made by Philips, Velleman or ELV. This driver is +meant as a replacement for the older, individual drivers: + * i2c-philips-par + * i2c-elv + * i2c-velleman + * video/i2c-parport (NOT the same as this one, dedicated to home brew + teletext adapters) + +It currently supports the following devices: + * Philips adapter + * home brew teletext adapter + * Velleman K8000 adapter + * ELV adapter + * Analog Devices evaluation boards (ADM1025, ADM1030, ADM1031, ADM1032) + +These devices use different pinout configurations, so you have to tell +the driver what you have, using the type module parameter. There is no +way to autodetect the devices. Support for different pinout configurations +can be easily added when needed. + + +Building your own adapter +------------------------- + +If you want to build you own i2c-over-parallel-port adapter, here is +a sample electronics schema (credits go to Sylvain Munaut): + +Device PC +Side ___________________Vdd (+) Side + | | | + --- --- --- + | | | | | | + |R| |R| |R| + | | | | | | + --- --- --- + | | | + | | /| | +SCL ----------x--------o |-----------x------------------- pin 2 + | \| | | + | | | + | |\ | | +SDA ----------x----x---| o---x--------------------------- pin 13 + | |/ | + | | + | /| | + ---------o |----------------x-------------- pin 3 + \| | | + | | + --- --- + | | | | + |R| |R| + | | | | + --- --- + | | + ### ### + GND GND + +Remarks: + - This is the exact pinout and electronics used on the Analog Devices + evaluation boards. + /| + - All inverters -o |- must be 74HC05, they must be open collector output. + \| + - All resitors are 10k. + - Pins 18-25 of the parallel port connected to GND. + - Pins 4-9 (D2-D7) could be used as VDD is the driver drives them high. + The ADM1032 evaluation board uses D4-D7. Beware that the amount of + current you can draw from the parallel port is limited. Also note that + all connected lines MUST BE driven at the same state, else you'll short + circuit the output buffers! So plugging the I2C adapter after loading + the i2c-parport module might be a good safety since data line state + prior to init may be unknown. + - This is 5V! + - Obviously you cannot read SCL (so it's not really standard-compliant). + Pretty easy to add, just copy the SDA part and use another input pin. + That would give (ELV compatible pinout): + + +Device PC +Side ______________________________Vdd (+) Side + | | | | + --- --- --- --- + | | | | | | | | + |R| |R| |R| |R| + | | | | | | | | + --- --- --- --- + | | | | + | | |\ | | +SCL ----------x--------x--| o---x------------------------ pin 15 + | | |/ | + | | | + | | /| | + | ---o |-------------x-------------- pin 2 + | \| | | + | | | + | | | + | |\ | | +SDA ---------------x---x--| o--------x------------------- pin 10 + | |/ | + | | + | /| | + ---o |------------------x--------- pin 3 + \| | | + | | + --- --- + | | | | + |R| |R| + | | | | + --- --- + | | + ### ### + GND GND + + +If possible, you should use the same pinout configuration as existing +adapters do, so you won't even have to change the code. + + +Similar (but different) drivers +------------------------------- + +This driver is NOT the same as the i2c-pport driver found in the i2c package. +The i2c-pport driver makes use of modern parallel port features so that +you don't need additional electronics. It has other restrictions however, and +was not ported to Linux 2.6 (yet). + +This driver is also NOT the same as the i2c-pcf-epp driver found in the +lm_sensors package. The i2c-pcf-epp driver doesn't use the parallel port +as an I2C bus directly. Instead, it uses it to control an external I2C bus +master. That driver was not ported to Linux 2.6 (yet) either. + + +Legacy documentation for Velleman adapter +----------------------------------------- + +Useful links: +Velleman http://www.velleman.be/ +Velleman K8000 Howto http://howto.htlw16.ac.at/k8000-howto.html + +The project has lead to new libs for the Velleman K8000 and K8005: + LIBK8000 v1.99.1 and LIBK8005 v0.21 +With these libs, you can control the K8000 interface card and the K8005 +stepper motor card with the simple commands which are in the original +Velleman software, like SetIOchannel, ReadADchannel, SendStepCCWFull and +many more, using /dev/velleman. + http://home.wanadoo.nl/hihihi/libk8000.htm + http://home.wanadoo.nl/hihihi/libk8005.htm + http://struyve.mine.nu:8080/index.php?block=k8000 + http://sourceforge.net/projects/libk8005/ diff -Naur g/Documentation/i2c/i2c-parport h/Documentation/i2c/i2c-parport --- g/Documentation/i2c/i2c-parport 2005-02-18 00:29:53.000000000 +0100 +++ h/Documentation/i2c/i2c-parport 1970-01-01 01:00:00.000000000 +0100 @@ -1,156 +0,0 @@ -================== -i2c-parport driver -================== - -2004-07-06, Jean Delvare - -This is a unified driver for several i2c-over-parallel-port adapters, -such as the ones made by Philips, Velleman or ELV. This driver is -meant as a replacement for the older, individual drivers: - * i2c-philips-par - * i2c-elv - * i2c-velleman - * video/i2c-parport (NOT the same as this one, dedicated to home brew - teletext adapters) - -It currently supports the following devices: - * Philips adapter - * home brew teletext adapter - * Velleman K8000 adapter - * ELV adapter - * Analog Devices evaluation boards (ADM1025, ADM1030, ADM1031, ADM1032) - -These devices use different pinout configurations, so you have to tell -the driver what you have, using the type module parameter. There is no -way to autodetect the devices. Support for different pinout configurations -can be easily added when needed. - - -Building your own adapter -------------------------- - -If you want to build you own i2c-over-parallel-port adapter, here is -a sample electronics schema (credits go to Sylvain Munaut): - -Device PC -Side ___________________Vdd (+) Side - | | | - --- --- --- - | | | | | | - |R| |R| |R| - | | | | | | - --- --- --- - | | | - | | /| | -SCL ----------x--------o |-----------x------------------- pin 2 - | \| | | - | | | - | |\ | | -SDA ----------x----x---| o---x--------------------------- pin 13 - | |/ | - | | - | /| | - ---------o |----------------x-------------- pin 3 - \| | | - | | - --- --- - | | | | - |R| |R| - | | | | - --- --- - | | - ### ### - GND GND - -Remarks: - - This is the exact pinout and electronics used on the Analog Devices - evaluation boards. - /| - - All inverters -o |- must be 74HC05, they must be open collector output. - \| - - All resitors are 10k. - - Pins 18-25 of the parallel port connected to GND. - - Pins 4-9 (D2-D7) could be used as VDD is the driver drives them high. - The ADM1032 evaluation board uses D4-D7. Beware that the amount of - current you can draw from the parallel port is limited. Also note that - all connected lines MUST BE driven at the same state, else you'll short - circuit the output buffers! So plugging the I2C adapter after loading - the i2c-parport module might be a good safety since data line state - prior to init may be unknown. - - This is 5V! - - Obviously you cannot read SCL (so it's not really standard-compliant). - Pretty easy to add, just copy the SDA part and use another input pin. - That would give (ELV compatible pinout): - - -Device PC -Side ______________________________Vdd (+) Side - | | | | - --- --- --- --- - | | | | | | | | - |R| |R| |R| |R| - | | | | | | | | - --- --- --- --- - | | | | - | | |\ | | -SCL ----------x--------x--| o---x------------------------ pin 15 - | | |/ | - | | | - | | /| | - | ---o |-------------x-------------- pin 2 - | \| | | - | | | - | | | - | |\ | | -SDA ---------------x---x--| o--------x------------------- pin 10 - | |/ | - | | - | /| | - ---o |------------------x--------- pin 3 - \| | | - | | - --- --- - | | | | - |R| |R| - | | | | - --- --- - | | - ### ### - GND GND - - -If possible, you should use the same pinout configuration as existing -adapters do, so you won't even have to change the code. - - -Similar (but different) drivers -------------------------------- - -This driver is NOT the same as the i2c-pport driver found in the i2c package. -The i2c-pport driver makes use of modern parallel port features so that -you don't need additional electronics. It has other restrictions however, and -was not ported to Linux 2.6 (yet). - -This driver is also NOT the same as the i2c-pcf-epp driver found in the -lm_sensors package. The i2c-pcf-epp driver doesn't use the parallel port -as an I2C bus directly. Instead, it uses it to control an external I2C bus -master. That driver was not ported to Linux 2.6 (yet) either. - - -Legacy documentation for Velleman adapter ------------------------------------------ - -Useful links: -Velleman http://www.velleman.be/ -Velleman K8000 Howto http://howto.htlw16.ac.at/k8000-howto.html - -The project has lead to new libs for the Velleman K8000 and K8005: - LIBK8000 v1.99.1 and LIBK8005 v0.21 -With these libs, you can control the K8000 interface card and the K8005 -stepper motor card with the simple commands which are in the original -Velleman software, like SetIOchannel, ReadADchannel, SendStepCCWFull and -many more, using /dev/velleman. - http://home.wanadoo.nl/hihihi/libk8000.htm - http://home.wanadoo.nl/hihihi/libk8005.htm - http://struyve.mine.nu:8080/index.php?block=k8000 - http://sourceforge.net/projects/libk8005/
