/Shell/Bash/How to get mcp23017 input in binary shell

How to get mcp23017 input in binary shell

# assuming chip is addressed to 0x20 
# to setup
sudo i2cset -y 1 0x20 0x00 0x00
# replace 1 with zero on rev1 pi
# iodira is 0x00 and iodirb is 0x01
# setting all pins on gpa to input
# echo as binary                  address GPIOA is 0x12 and GPIOB is 0x13
echo "ibase=16;obase=2;$(i2cget -y 1 0x20 0x12 b | cut -c3-4)"|bc | BC_LINE_LENGTH=9999 bc | awk '{ printf "%08d\n", $0 }' 
# replace 1 with zero on rev1 pi
# Registers are shown on page 16 Table 3-3 of the data sheet https://ww1.microchip.com/downloads/en/devicedoc/20001952c.pdf

Source: ww1.microchip.com

Similar codes

42 votes204 views2 answers
Install yarn global
Shell/Bash
1 vote209 views1 answer
Install python for latex with dependencies
Shell/Bash
-1 vote192 views1 answer
How to run jar file mac
Shell/Bash
3 votes208 views2 answers
Open crontab in nano
Shell/Bash
6 votes193 views2 answers
Install jenkins on ubuntu 20.04
Shell/Bash
0 vote202 views1 answer
Apt upgrade git last version
Shell/Bash
0 vote192 views1 answer
How to check if cyberduck is installed
Shell/Bash
0 vote201 views1 answer
Install onedrive in ubuntu 18.04
Shell/Bash
40 votes219 views6 answers
Install homebrew on mac
Shell/Bash
0 vote205 views1 answer
Mac open programm bash
Shell/Bash