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3.1415

master
BARRAUX Arthur 2 years ago
parent
commit
8c40de8f0b
  1. 19
      get_temp.sh

19
get_temp.sh

@ -1,6 +1,17 @@
#!/bin/bash
response = `i2cget -y 1 0x18 0x05 w`
upper_byte = $(($response & 0x00FF))
echo $response
echo $upper_byte
response=`i2cget -y 1 0x18 0x05 w`
upper_byte=$(($response & 0x00FF))
lower_byte=$(($response & 0xFF00))
let "sign=0"
# test the sign
if [ $(($upper_byte & 0x10)) = 0x10 ]
then
upper_byte=$(($upper_byte & 0x0F))
let "temperature = 256 - (upper_byte * 16 + lower_byte / 4096)"
else
upper_byte=$((upper_byte & 0x0F))
let "temperature = ($upper_byte*100 * 16 + $lower_byte*100 / 4096)"
fi
printf %.2f "$(($temperature))e-2"
echo

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