https://people.ece.cornell.edu/land/courses/ece4760/PIC32/uart/HM10/DSD%20TECH%20HM-10%20datasheet.pdf
http://jnhuamao.cn/download_rom_en.asp?id=1
https://play.google.com/store/apps/details?id=com.macdom.ble.blescanner&hl=en_IN