i m akhil,
senier embedded engineer technorip pvt ltd.
i have strong knowledge in OPENCPU quectel M66 and MC60 modules. THE
i make a MQTT library in opencpu.
i have 2 year experience in opencpu.
(FOTA, RTC, HTTP, ALARM, MQTT, TCP, MULTI TASKING, I2C, UART, TIMERS)
I write ssd1306 ln opencpu for OLED.
i also interface GT511C3 fingerprint sensor in opencpu.
NOTE: I dont know STM32, but know PIC, Arduino, NUVATON..etc