reComputer RS485 test
Introduction
This wiki applies to all reComputer devices with RS485 interfaces include reComputer R10/R11/R20/R21 and can be used to test whether the RS485 receiving and transmitting functions are working correctly.
Hardware Preparation
| reComputer r1000 | reComputer r1100 | reComputer r2000 | reComputer r2100 |
|---|---|---|---|
 |  |  |  |
Connection
Select a pair of RS485 interfaces to test， please connect A1 to A2 and connect B1 to B2:
Prepare software
Use the following command to download：
git clone https://github.com/ackPeng/R1100_TEST.git
Compile
gcc -o serial_test serial_test.c
Test
#From ttyACM0 to ttyACM1, send RS485_1 to RS485_2
./serial_test /dev/ttyACM0 /dev/ttyACM1 115200
# From ttyACM1 to ttyACM0, send RS485_2 to RS485_1
./serial_test /dev/ttyACM1 /dev/ttyACM0 115200
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