universal-silabs-flasher-up

#!/usr/bin/with-contenv bashio
# vim: ft=bash
# shellcheck shell=bash
# ==============================================================================
# Start universal-silabs-flasher if requested
# ==============================================================================

# shellcheck disable=SC2034
declare autoflash_firmware
declare device
declare firmware
declare usb_device_path
declare usb_manufacturer
declare usb_product
declare gpio_reset_flag

function exit_no_firmware {
    bashio::log.warning "No firmware found for the selected device, assuming firmware is installed."
    exit 0
}

device=$(bashio::config 'device')

if bashio::config.false 'autoflash_firmware'; then
    bashio::log.info "Flashing firmware is disabled"
    exit 0
fi

# Assume to run on Yellow if UART4 is mapped to ttyAMA1
if [ -d /sys/devices/platform/soc/fe201800.serial/tty/ttyAMA1 ] && [ "${device}" == "/dev/ttyAMA1" ]; then
    bashio::log.info "Detected Home Assistant Yellow"
    firmware="NabuCasa_Yellow_RCP_v4.3.1_rcp-uart-hw-802154_460800.gbl"
    gpio_reset_flag="--yellow-gpio-reset"
else
    # Check device manufacturer/product information
    # shellcheck disable=SC2046,SC2086
    usb_device_path=$(realpath /sys/class/tty/$(readlink /sys/class/tty/$(basename ${device}))/../../../../)
    if [ ! -f "${usb_device_path}/idProduct" ]; then
        bashio::log.info "The selected serial port is not a USB device."
        exit_no_firmware
    fi

    if [ ! -f "${usb_device_path}/manufacturer" ] || [ ! -f "${usb_device_path}/product" ]; then
        bashio::log.info "USB device is missing manufacturer or product name."
        exit_no_firmware
    fi

    usb_manufacturer=$(cat "${usb_device_path}/manufacturer")
    usb_product=$(cat "${usb_device_path}/product")

    bashio::log.info "Checking ${device} identifying ${usb_product} from ${usb_manufacturer}."
    if [[ "${usb_manufacturer}" == "Nabu Casa" && "${usb_product}" == "SkyConnect"* ]]; then
        firmware="NabuCasa_SkyConnect_RCP_v4.3.1_rcp-uart-hw-802154_460800.gbl"
    elif [[ "${usb_manufacturer}" == "Nabu Casa" && "${usb_product}" == "Home Assistant Connect ZBT-1"* ]]; then
        firmware="NabuCasa_SkyConnect_RCP_v4.3.1_rcp-uart-hw-802154_460800.gbl"
    else
        exit_no_firmware
    fi
    gpio_reset_flag=""
fi

# All firmware we flash have a known baudrate of 460800, let cpcd know.
echo 460800 > /tmp/known-baudrate

bashio::log.info "Starting universal-silabs-flasher with ${device}"
# shellcheck disable=SC2086
exec universal-silabs-flasher --device ${device} \
     flash ${gpio_reset_flag} --ensure-exact-version --allow-cross-flashing --firmware "/root/${firmware}"