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TiNredmc/bq2754x_seal.sh

Last active February 2, 2022 07:27
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Reseal the Fuel gauge protection of BQ27541/BQ27542 via i2ctransfer on Linux
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bq2754x_seal.sh
#!/bin/bash
# Simple Script to re-seal the BQ27541 or BQ27542
# Coded by TinLethax 2021/06/02 +7
# structure [Control_command0x00][lower byte][higher byte]
# Sending SEAL subcommand cause it to reseal (Sending Big endian )
i2ctransfer -y -f 0 w3@0x55 0x00 0x20 0x00
sleep 1
i2ctransfer -y -f 0 w3@0x55 0x00 0x00 0x00
i2ctransfer -y -f 0 w1@0x55 0x00 r2
echo Resealed!
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