mqtt_upload.sh

#!/bin/bash
# Flash a binary to a device uploading over mqtt

ESPDIR="${HOME}/esphome"
ESPBIN="${ESPDIR}/esphome-env/bin/esphome"

# Parse args
if [ $# != 2 ]; then
    echo "Usage: $0 <esphome_config> <mqtt_prefix>"
    exit 1
fi
ESPHOME_CONFIG="$1"
MQTT_PREFIX="$2"

# Compile software
echo ""
echo ""
echo "=================== Compiling software"
cd "${ESPDIR}"
${ESPBIN} "$ESPHOME_CONFIG" compile

# Turn on "ota" update mode and wait for connection
echo ""
echo ""
echo "=================== Waiting for device to connect"
mosquitto_pub -t "${MQTT_PREFIX}/ota_mode" -r -m "ON"
mosquitto_sub -t "${MQTT_PREFIX}/debug" -R -C 1 > /dev/null

# Turn off "ota" update mode and upload new binary
echo ""
echo ""
echo "=================== Uploading"
sleep 2
mosquitto_pub -t "${MQTT_PREFIX}/ota_mode" -r -n
${ESPBIN} "$ESPHOME_CONFIG" upload