i cannot bluetooth work on sim800. at+gsv command gives following response: simcom_ltd. simcom_sim800 rev: 1308b02sim800m64_bt. @ command type (eg at_btstatus=?) gives error. problem?
from sim800 manual here[*], page4, should be:
at+btstatus? not at_btstatus=?
you may want have at:
https://en.wikibooks.org/wiki/serial_programming/modems_and_at_commands#at_commands
...and of course read manual module.
*: http://mt-system.ru/sites/default/files/simcom_sim800_series_bluetooth_application_guide_v1.01.pdf
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