Firmware

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Update Instructions

Important: Always update ALL firmware components of your ESPARGOS device and update them in this order: First sensor firmware, then controller firmware, then web assets.

Hint: Updates may fail if ESPARGOS is too busy streaming WiFi CSI. Make sure this is not the case.

Web Browser

Go to the web interface of your ESPARGOS device. See Setup to learn how.
One after the other, select and flash the firmware files for
- sensor firmware,
- controller firmware and
- controller web assets.
ESPARGOS will reboot after every firmware update.

Command Line

# Download latest firmware files from espargos.net
cd /tmp
wget https://espargos.net/firmware/espargos-sensor-firmware.bin
wget https://espargos.net/firmware/espargos-controller-firmware.bin
wget https://espargos.net/firmware/espargos-controller-assets.bin

# Upload firmware to ESPARGOS:
# * Change ESPARGOS_HOST to the IP address / hostname of your ESPARGOS device.
# * Make sure the update succeeded after every step. Otherwise, reboot ESPARGOS.
ESPARGOS_HOST=192.168.1.2
curl -# "http://$ESPARGOS_HOST/update_sensor_firmware" --compressed -H "Content-Type: application/octet-stream" --data-binary @espargos-sensor-firmware.bin | tee /dev/null
curl -# "http://$ESPARGOS_HOST/update_firmware" --compressed -H "Content-Type: application/octet-stream" --data-binary @espargos-controller-firmware.bin | tee /dev/null
curl -# "http://$ESPARGOS_HOST/update_assets" --compressed -H "Content-Type: application/octet-stream" --data-binary @espargos-controller-assets.bin | tee /dev/null

Sensor Update Behavior

The ESPARGOS controller takes care of distributing the firmware update to all sensor microcontrollers.

While the update is being distributed, the sensors will quickly alternate between green and red.
In the end, the sensors will flash both red and green LEDs simultaneously to indicate that the update was succesful.