/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

0 vote191 views1 answer
Failed to initialize graphics environment linux
Shell/Bash
0 vote198 views1 answer
How to commit code to bitbucket first time
Shell/Bash
1 vote182 views3 answers
Bash not equal
Shell/Bash
0 vote179 views1 answer
Powershell suppress error
Shell/Bash
0 vote173 views1 answer
Install node without warning force
Shell/Bash
9 votes186 views2 answers
Flutter windows
Shell/Bash
0 vote183 views1 answer
Bluetooth keep restarting ubuntu
Shell/Bash
1 vote177 views1 answer
Awk save to same file
Shell/Bash
8 votes180 views2 answers
How to generate ssh key in linux
Shell/Bash
13 votes183 views2 answers
How to stop git asking for username and password
Shell/Bash