c8f0ec7fa4
Added a cast to esp_sntp_operatingmode_t in sntp_setoperatingmode()'s
call to esp_sntp_setoperatingmode(operating_mode). Althouogh C
doesn't require the cast, C++ does. Otherwise you get...
error: invalid conversion from 'u8_t' {aka 'unsigned char'}
to 'esp_sntp_operatingmode_t'