WeChat video interview-33min-2020.4.13
1. Introduce yourself
2. Ask about the items in your resume, mainly by yourself, describe your responsibilities in the project (boarding, welding, debugging, writing simple procedures)
3. Ask about TCP / IP protocol
4. Ask about Modbus protocol familiarity Unskilled
5. Ask about the RS232 / RS485 protocol
6. If you are looking for a job formally, are you looking for a consumer electronics company to do embedded or an industrial-grade product company to do embedded (I answer consumer)
7. If it is new HJ212 protocol, can you write a communication program, I answer: If the person who writes the protocol understands the sequence diagram, I can use C language.
8. STM32 control switch quantity
9, software filtering and hardware filtering, the software is to add filtering algorithm (median, average and other filtering algorithms), the hardware is to add RC filtering
They are established in 2018 to do marine monitoring products. The main MCU is STM32, do some monitoring, do PCB board, write C language communication protocol, mainly serial port, WiFi, industrial-grade Modbus protocol, write some acquisition signals program of,
