Need to design firmware to build MQTT gateway with following details
[login to view URL] for STM32 + sim800 + SPI flash memory
2. Gateway need to publish data received on uart of STM32 gate way from mother board
3. Gateway need to subscribe topic and when data recieved send that data to mother board via uart
4. Gateway need to check atleast once/twice a day for new firmware available on server.
5. If new file available then ask server to send that .bin or hex file and store it to SPI flash. If correct file received then reprogram mother board SMT32 using bootloader pin and uart.
8 威客就此工作平均出价 ₹42361
Hello, Deep is here. I have experience with STM32 series MCUs, SIM800 hardware as well as Firmware development. I have experience with MQTT, OTA. I can help you for this development.
hello I am embedded system developer. I have developed project with mqtt server. I have developed OTA in stm32 and using quectel mc66. I have ota with openCpu.