IO-Link Master with IoT Interface CabinetLine 8 Ports IP 20
43
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Example: Update firmware
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Task:
Update the firmware of the device; size of the firmware file: 356676 bytes
Solution:
The firmware is transferred to the device in fragments (chunks). The size of the fragments depends on
the size of the flash memory of the IO-Link master. To transfer the firmware, the firmware file must be
converted into a character string using BASE64.
1 Preparations
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Determine the size of the fragments (g = number of bytes):
{"code":"request", "cid": -1, "adr":"/firmware/container/chunksize/getdata"}
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Convert the firmware file into a BASE64 string.
2 Start the transfer of the firmware
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Start the transfer of the firmware via the service start_stream_set (parameter "size": size of the firmware file):
{"code":"request", "cid": -1, "adr":"/firmware/container/start_stream_set", "data":{"size":356676}}
3 Load the firmware into the flash memory of the IO-Link master
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Send the BASE64 string of the firmware file to the IO-Link master fragment by fragment (value = string value with
length g).
{"code": "request", "cid": -1, "adr": "/firmware/container/stream_set", "cid": -1, "data": {"value":
"aWZtfgIAAABBTDF4NXhfY25faXRfdDIuMi43Nw..."}
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Repeat step 3 until all fragments of the firmware file have been sent to the IO-Link master.
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IO-Link master stores the segments received in the container area.
4 Install firmware
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Start the installation of the transmitted firmware.
{"code": "request", "cid": -1, "adr": "/firmware/install", "data": {}}
