50 lines
1.4 KiB
Standard ML
Executable file
50 lines
1.4 KiB
Standard ML
Executable file
#!/usr/bin/env fun
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/*
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* This file is part of the Fun programming language.
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* https://fun-lang.xyz/
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*
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* Copyright 2025 Johannes Findeisen <you@hanez.org>
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* Licensed under the terms of the Apache-2.0 license.
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* https://opensource.org/license/apache-2-0
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*
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* Added: 2025-12-28
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*/
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// Test script for serial communication
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// This script attempts to open a virtual serial port if it exists,
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// or just demonstrates the syntax if not.
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fun test_serial()
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number fd = 0
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number baud = 9600
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string path = "/dev/ttyUSB0"
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print("Attempting to open serial port: " + path)
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fd = serial_open(path, baud)
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if fd > 0
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print("Successfully opened serial port. FD: " + to_string(fd))
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// Config: fd, data_bits, parity, stop_bits, flow_control
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// Parity: 0=None, 1=Odd, 2=Even
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// Flow: 0=None, 1=Hardware
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number ok = serial_config(fd, 8, 0, 1, 0)
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if ok
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print("Configured serial port: 8N1, no flow control")
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number sent = serial_send(fd, "HELLO SERIAL\n")
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print("Sent " + to_string(sent) + " bytes")
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// recv is blocking in this implementation
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// data = serial_recv(fd, 100)
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// print "Received: " + data
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else
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print("Failed to configure serial port")
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serial_close(fd)
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print("Closed serial port")
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else
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print("Could not open serial port (this is expected if /dev/ttyUSB0 doesn't exist or no permission)")
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test_serial()
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