4 Power Down Modes
This chapter describes different power down modes and the prior conditions for these
modes.
The power down mode is available on BlueMod+B20/SPP/HID in firmware V3.002 and
later.
4.1 Power Down Usage (S409)
The power down functionality is disabled by default.
It can be enabled by setting the parameter S409 and additionally by controlling the
serial input status line DTR (Pin no. 7, PIO4, „RTC-IN‟).
4.2 Wake Up Events
If enabled, the device sleeps if no activity on the AT interface is detected for 250 ms.
The device wakes up on the following events:
An incoming connection
(only available if page scan is enabled, S316=2 or 3)
Activating serial status line DTR
(0V on LV-TTL level)
Activity on RX UART line, e.g. sending a character on the UART interface
(please note that the module will reach back to the power down mode after
250 ms of no activity on the RX UART)
Waking up the device by activity on RX UART line is not recommenced because the
first character is lost, so this method can result in loss of data.
Waking up by an incoming connection implies active page scans (S316). This leads to
higher power consumption in the power down mode.
To Next Page
Loading...