
WIRELESS CONNECTIVITY & SENSORS
User manual Proteus-II
5.3. State indication using the LED pins
The pins
and
of the Proteus-II can be used to determine the module state. The
states described in Figure
result in the following pin behavior. The pins on the Proteus-II are
active high.
State
ACTION_IDLE
Blinking (On for 200ms, Off
for 2800ms)
Off
ACTION_SCANNING
Blinking (On for 1000ms, Off
for 1000ms)
Off
ACTION_CONNECTED
On
Off, On (as soon as the
channel was opened
successfully, see
ACTION_SLEEP
Off
Off
ACTION_DTM
Off
Off
BOOTLOADER
waiting for
connection
On
Off
BOOTLOADER
connected,
firmware update running
Off
On
Table 17: LED behavior of the Proteus-II
5.4. Sleep mode
Especially for battery-powered devices the
ACTION_SLEEP
mode (system-off mode) supports
very low power consumption (<1µA). It can be entered by sending the command
to the module. If allowed (due to the current operating state) the module will then send a
and then enter the
ACTION_SLEEP
mode.
In
ACTION_SLEEP
mode the UART is disabled, so the module will not receive or transmit any
data. To prevent leakage current, the host shall not pull the
to LOW level (as the
module has an internal pull-up resistor enabled on this pin).
To leave the
ACTION_SLEEP
mode and enter
ACTION_IDLE
state again, the module has to be
woken up by applying a low signal to the
pin for at least 5ms before releasing the
signal back to high. The module then restarts completely, so that all volatile settings are set to
default. A
will be sent when the module is ready for operation.
Please note that the
pin has a second function.
If the mod-
ule is not in
ACTION_SLEEP
mode and the UART was disabled using the
, the UART can be re-enabled by applying falling edge,
holding the line low for at least 10ms before applying a rising edge and
holding it high for at least 10ms. In this case the module answers with a
message.
Order code 2608011x24010
34
Version 1.11 , July 2022