meta-digi/scripts/install_usb_driver.sh

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#!/bin/sh
#===============================================================================
#
# Copyright (C) 2022 by Digi International Inc.
# All rights reserved.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 2 as published by
# the Free Software Foundation.
#
#
# Description:
# Script to install the driver of the usb serial console.
#===============================================================================
# Exit on any error
set -e
# Unload the selected module
unload_module()
{
if grep -qs "^${1}" /proc/modules; then
printf "Module ${1} loaded, unloading the module.\n"
rmmod "${1}"
fi
}
# Create rule for the Cypress USB driver
create_rule()
{
RULE_PATH=/etc/udev/rules.d/90-cyusb.rules
if [ ! -f "$RULE_PATH" ]; then
printf "Rule \"$RULE_PATH\" doesn't exist, creating a new one.\n"
printf "# Cypress USB driver for FX2 and FX3 (C) Cypress Semiconductor Corporation / ATR-LABS" | tee ${RULE_PATH} > /dev/null
printf "# Rules written by V. Radhakrishnan ( rk@atr-labs.com )" | tee -a ${RULE_PATH} > /dev/null
printf "# Cypress USB vendor ID = 0x04b4" | tee -a ${RULE_PATH} > /dev/null
printf "KERNEL==\"*\", SUBSYSTEM==\"usb\", ENV{DEVTYPE}==\"usb_device\", ACTION==\"add\", ATTR{idVendor}==\"04b4\", MODE=\"666\"" | tee -a ${RULE_PATH} > /dev/null
printf "KERNEL==\"*\", SUBSYSTEM==\"usb\", ENV{DEVTYPE}==\"usb_device\", ACTION==\"remove\", TAG==\"cyusb_dev\"" | tee -a ${RULE_PATH} > /dev/null
fi
}
# Blacklist the selected module
blacklist()
{
BLACKLISTH_PATH=/etc/modprobe.d/blacklist.conf
if [ ! -f "$BLACKLISTH_PATH" ]; then
printf "File \"$BLACKLISTH_PATH\" doesn't exist, creating a new one.\n"
printf "blacklist ${1}" | tee ${BLACKLISTH_PATH} > /dev/null
else
printf "File \"$BLACKLISTH_PATH\" exists, checking if the rule is already there.\n"
if grep -Fq "${1}" $BLACKLISTH_PATH; then
printf "Rule for ${1} found.\n"
else
printf "Rule for ${1} not found. Adding ${1} to the blacklist.\n"
printf "\nblacklist ${1}" | tee -a ${BLACKLISTH_PATH} > /dev/null
fi
fi
}
if [ "$(id -u)" != 0 ]; then
printf "This script should be run with root privileges.\n"
exit 1
fi
printf "Installing Cypress USB driver.\n"
create_rule
blacklist "cytherm"
unload_module "cytherm"
unload_module "cdc_acm"
printf "Please plug/unplug your usb device to be recognized.\n"