Chengdu Ebyte Electronic Technology Co., Ltd.
E220-400T22S User Manual
Copyright ©2012–2020,
Chengdu Ebyte Electronic Technology Co., Ltd.
9
When AUX=0, the buffer is not empty: the data in the internal 400-byte buffer has not been written to the wireless
chip and the transmission is started. At this time, the module may be waiting for the end of the user data to time out,
or the wireless sub-packet transmission is in progress.
[Note]: When AUX=1, it does not mean that all serial port data of the module has been transmitted wirelessly, and
the last packet of data may be being transmitted.
5.6.3 Configuration procedure of module
Only happened when power-on resetting or exiting sleep mode
5.6.4 Notes for AUX
No.
AUX Description
1
For function 1 & function 2 mentioned above, the priority should be given to the one with low level output, which means if
it meets each of any low level output condition, AUX outputs low level, if none of the low level condition is met, AUX
outputs high level.
2
When AUX outputs low level, it means the module is busy & cannot conduct operating mode checking. Within 1ms since
AUX outputs high level, the mode switch will be completed.
3
After switching to new operating mode, it will not work in the new mode immediately until AUX rising edge lasts for 2ms.
If AUX stays on the high level, the operating mode switch can be affected immediately.
4
When the user switches to other operating modes from mode 3 (sleep mode) or it’s still in reset process, the module will
reset user parameters, during which AUX outputs low level.
5
Due to the characteristics of the LoRa modulation method, the information transmission delay is much longer than that of
FSK. For example, at 2.4kbps airspeed, the 100-byte transmission delay is about 1.5 seconds. It is recommended that
customers do not transmit large amounts of data at low airspeeds. , So as to avoid communication abnormalities caused by
data loss due to data accumulation.
