Add serial_io, a simplistic BSerialPort based command line tool that prints what

it reads from the specified port and writes what gets input on stdin. It
currently hardcodes the basic setup of the serial port.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42131 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/tests/kits/device/Jamfile

@@ -1,3 +1,4 @@
 SubDir HAIKU_TOP src tests kits device ;
 
+SubInclude HAIKU_TOP src tests kits device bserial ;
 SubInclude HAIKU_TOP src tests kits device stickit_BJoystick ;

src/tests/kits/device/bserial/Jamfile

@@ -0,0 +1,5 @@
+SubDir HAIKU_TOP src tests kits device bserial ;
+
+SimpleTest serial_io :
+	SerialIO.cpp
+	: libdevice.so $(TARGET_LIBSTDC++) ;

src/tests/kits/device/bserial/SerialIO.cpp

@@ -0,0 +1,83 @@
+#include <SerialPort.h>
+
+#include <stdio.h>
+#include <string.h>
+
+
+static int32
+reader_thread(void *data)
+{
+	BSerialPort *port = (BSerialPort *)data;
+	char buffer[128];
+
+	while (true) {
+		ssize_t read = port->Read(buffer, sizeof(buffer));
+		if (read <= 0)
+			continue;
+
+		for (ssize_t i = 0; i < read; i++) {
+			putc(buffer[i], stdout);
+			fflush(stdout);
+		}
+	}
+
+	return 0;
+}
+
+
+int
+main(int argc, char *argv[])
+{
+	BSerialPort port;
+
+	if (argc < 2) {
+		printf("usage: %s <port>\n", argv[0]);
+
+		int32 portCount = port.CountDevices();
+		printf("\tports (%ld):\n", portCount);
+
+		char nameBuffer[B_OS_NAME_LENGTH];
+		for (int32 i = 0; i < portCount; i++) {
+			if (port.GetDeviceName(i, nameBuffer, sizeof(nameBuffer)) != B_OK) {
+				printf("\t\tfailed to retrieve name %ld\n", i);
+				continue;
+			}
+
+			printf("\t\t%s\n", nameBuffer);
+		}
+
+		return 1;
+	}
+
+	status_t result = port.Open(argv[1]);
+	if (result < B_OK) {
+		printf("failed to open port \"%s\": %s\n", argv[1], strerror(result));
+		return result;
+	}
+
+	port.SetDataRate(B_9600_BPS);
+	port.SetDataBits(B_DATA_BITS_8);
+	port.SetStopBits(B_STOP_BITS_1);
+	port.SetParityMode(B_NO_PARITY);
+	port.SetFlowControl(B_NOFLOW_CONTROL);
+
+	thread_id reader = spawn_thread(reader_thread, "serial reader",
+		B_NORMAL_PRIORITY, &port);
+	if (reader < 0) {
+		printf("failed to spawn reader thread\n");
+		return reader;
+	}
+
+	resume_thread(reader);
+
+	char buffer[128];
+	while (true) {
+		char *string = fgets(buffer, sizeof(buffer), stdin);
+		if (string == NULL)
+			continue;
+
+		port.Write(buffer, strlen(string) - 1);
+	}
+
+	return 0;
+}