Hi Jeff， I read the pinmux.ods file ,it's very useful for me, but i find input GPIO pin it's not enough. If I disable EMMC and use that pin ? I have drawn 2 versions breakout board schematic for BBB: (1)outputs use 74ls244, inputs use OPTO, (22 outputs 22 inputs) (2)outputs use 6N137&pc817(tlp521) inputs use OPTO ( 14 high-speed outputs & 8 normal outputs 22 inputs)
I want to sent to you.. help me check it。When it's practical，I will open source in the future。 Can I send the schematic to your email (*[email protected])* ? 在 2018年8月7日星期二 UTC+8下午11:57:57，Jeff Pollard写道： > > Hi, > > There is a table here: > > > https://github.com/cdsteinkuehler/beaglebone-black-pinmux/blob/hal_pru_generic/pinmux.ods > > that shows how various pins can be assigned. > > The pin's drive capability seems to vary from pin to pin on the BBB, so > you should probably check that to make sure it can drive your led in the > opto. Or just use a logic buffer to drive the opto. > > Jeff > > > On Tuesday, August 7, 2018 at 1:45:43 AM UTC-7, Lang Gu wrote: >> >> >> <https://lh3.googleusercontent.com/-vL3glDwarSs/W2lcL-j567I/AAAAAAAAACo/i7AaeUXFcyQkaQsnMzG4csJXAJv---KEQCLcBGAs/s1600/QQ%25E5%259B%25BE%25E7%2589%258720180807164436.png> >> Hello machinekit team and everyone >> >> I come from China,my english is very poor.So try to say as simple as >> possible. >> In China It's no cnc cape available.So i try to make a 5 axis cnc cape >> for BBB. >> >> Someone can tell me if this pin assignment is possible, or if there are >> any problems? >> >> P8 SIGNAL >> 1 GND >> 2 GND >> 3 A_ >> 4 B_ >> 5 X_1 >> 6 X_10 >> 7 X_100 >> 8 X-AXIS >> 9 Y-AXIS >> 10 Z-AXIS >> 11 4-AXIS >> 12 5-AXIS >> 13 PWM-0 >> 14 X-MIN >> 15 X-MAX >> 16 Y-MIN >> 17 Y-MAX >> 18 Z-MIN >> 19 Z-MAX >> 20 A-MIN >> 21 A-HOME >> 22 B-HOME >> 23 E-STOP >> 24 SPINDLE-SPEED >> 25 Z-PROBE >> 26 TOOL-SENSOR >> 27 HDMI >> 28 HDMI >> 29 HDMI >> 30 HDMI >> 31 HDMI >> 32 HDMI >> 33 HDMI >> 34 HDMI >> 35 HDMI >> 36 HDMI >> 37 HDMI >> 38 HDMI >> 39 HDMI >> 40 HDMI >> 41 HDMI >> 42 HDMI >> 43 HDMI >> 44 HDMI >> 45 HDMI >> 46 HDMI >> >> >> >> P9 SIGNAL >> 1 GND >> 2 GND >> 3 3.3V >> 4 3.3V >> 5 5V >> 6 5V >> 7 SYS-5V >> 8 SYS-5V >> 9 PWR_BUT >> 10 SYS_RESETn >> 11 X-STEP >> 12 X-DIR >> 13 Y-STEP >> 14 PWM-2 >> 15 Y-DIR >> 16 Z-STEP >> 17 Z-DIR >> 18 A-STEP >> 19 I2C2_SCL >> 20 I2C2_SDA >> 21 A-DIR >> 22 B-STEP >> 23 B-DIR >> 24 6-STEP >> 25 6-DIR >> 26 SPINDLE-ON >> 27 COOLANT >> 28 OUT3 >> 29 OUT4 >> 30 OUT5 >> 31 OUT6 >> 32 >> 33 >> 34 >> 35 >> 36 >> 37 >> 38 >> 39 >> 40 >> 41 OUT7 >> 42 OUT8 >> 43 GND >> 44 GND >> 45 GND >> 46 GND >> INPUT & OUTPUT SCH >> >> >> -- website: http://www.machinekit.io blog: http://blog.machinekit.io github: https://github.com/machinekit --- You received this message because you are subscribed to the Google Groups "Machinekit" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. Visit this group at https://groups.google.com/group/machinekit. For more options, visit https://groups.google.com/d/optout.
