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You can either connect the PC directly using the USB-C port on the EmStat4M module or you
can use the micro-USB connection of the development board.
The micro-USB port on the development board is meant for programming the BT module,
charging, or testing the UART lines to the EmStat4M.
When using the USB-C port on the EmStat4M module, the communication on the PC side is
handled by the Windows CDC drivers. The micro-USB port works using an FTDI chip for USB
to serial communication. With both USB ports a connection can be made via a serial virtual COM
port to use a terminal program like Tera Term for example.
The following table shows the implications for connecting either to the micro-USB of the
development board or the USB-C cable of the EmStat4M module.
Table 6 - Differences between USB ports
Micro-USB cable to development
board
USB-C cable directly to EmStat4M
▪
Speed
230.000 baud (default) allowing for
+/- 700 datapoints/second
Full-speed USB allowing for
+/- 2500 datapoints/second
▪
Connecting to
PSTrace
Shows as “ES4Dev”
Enable SW7 3+4 (Rx and Tx) leave
SW7 1+2 OFF
1
Shows as “EmStat4 LR”
or “EmStat4 HR”
SW7 setting is ignored
▪
Drivers
Works standard in Windows 7 to 11
without installation of special drivers
Works out-of-the box in Windows 10,
requires EmStat drivers to be installed
(via PSTrace) in Windows 7
▪
Other functions
Allows for direct communication
between PC and the Laird BT900
Bluetooth module
SW7: ALL OFF
SW4: ALL ON
Allows for automatic firmware updating
of the EmStat4M module in PSTrace
1
Flow control will be added with a software update. Until then, leave SW7 1+2 OFF.
Содержание EmStat4M
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