Blog
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SNMP on Zephyr: zephyr-snmp works on a Teensy 4.1
We tested the simpleiot/zephyr-snmp agent (SNMP v1/v2c) on a Teensy 4.1 with Zephyr v4.4.2, over Ethernet over USB. Walk, get, set, error replies, agent restart and traps all work. We filed two small issues upstream.
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RAM and flash cost of Zephyr services on a Teensy 4.1
What does Ethernet, MQTT, TLS, SNMP, CAN, USB or LVGL cost on a small Cortex-M7 board? 305 clean builds of a Zephyr reference app measure the flash and static RAM of 279 services, one at a time and in typical combinations. Main result: flash is not the limit; RAM is. A managed connected device with DHCP, DNS, SNTP, mDNS, MQTT over TLS, an HTTP REST server and SNMP uses 3.6% of the 8 MB flash, but half of the default 256 KB RAM region.
