From: misomosi <misomosispi@gmail.com>
Date: Tue, 4 Aug 2026 15:32:35 +0000 (-0400)
Subject: Read track data from MSRX6 BT Serial
X-Git-Url: http://git.misomosispi.com/?a=commitdiff_plain;p=gists.git

Read track data from MSRX6 BT Serial
---

diff --git a/MSRX6/mxread.odin b/MSRX6/mxread.odin
new file mode 100644
index 0000000..9a6c2be
--- /dev/null
+++ b/MSRX6/mxread.odin
@@ -0,0 +1,78 @@
+package mxread
+import "core:bytes"
+import "core:os"
+import "core:time"
+import "core:fmt"
+import "core:sys/windows"
+
+COM_PORT :: "\\\\.\\COM10"
+main :: proc() {
+	fp, errno := os.open(COM_PORT, os.O_RDWR)
+	if errno != 0 {
+		fmt.println("COM port open failure!", errno);
+		return;
+	}
+	fd := cast(windows.HANDLE)os.fd(fp)
+	dcb: windows.DCB
+	dcb.DCBlength = size_of(type_of(dcb))
+	if !windows.GetCommState(fd, &dcb) {
+		fmt.println("GetCommState failure!", windows.GetLastError());
+		return;
+	}
+
+	dcb.BaudRate = 9600
+	dcb.StopBits = .One
+	dcb.Parity = .None
+	if !windows.SetCommState(fd, &dcb) {
+		fmt.println("GetCommState failure!", windows.GetLastError());
+		return;
+	}
+
+	timeouts: windows.COMMTIMEOUTS
+	timeouts.ReadIntervalTimeout = 50
+	timeouts.ReadTotalTimeoutConstant = 10000
+	timeouts.ReadTotalTimeoutMultiplier = 10
+	timeouts.WriteTotalTimeoutConstant = 2000
+	timeouts.WriteTotalTimeoutMultiplier = 10
+	if !windows.SetCommTimeouts(fd, &timeouts) {
+		fmt.println("SetCommTimeouts failure!", windows.GetLastError());
+		return;
+	}
+
+	/*
+	fmt.println("Telling MSR to reset!")
+	RESET := [2]u8 { 0x1b, 0x61 }
+	_, errno = os.write(fp, RESET[:])
+	time.sleep(time.Second)
+	if errno != 0 {
+		fmt.println("Write failed!", errno)
+	}
+	fmt.println("Telling MSR to blink!")
+	LEDS := [2]u8 { 0x1b, 0x81 }
+	_, errno = os.write(fp, LEDS[:])
+	time.sleep(time.Second)
+	if errno != 0 {
+		fmt.println("Write failed!", errno)
+	}
+	*/
+	fmt.println("Reading track data!")
+	READ := [2]u8 {0x1b, 0x72}
+	_, errno = os.write(fp, READ[:])
+	if errno != 0 {
+		fmt.println("Write failed!", errno)
+	} else {
+		buffer: [1024]u8
+		N, nread := 0, 0
+		errno = 0
+		for errno == 0 {
+			N += nread
+			if bytes.index_any(buffer[:N], {0x3f, 0x3f}) >= 0 {
+				break;
+			}
+			nread, errno = os.read(fp, buffer[N:])
+		}
+		fmt.println(cast(string)buffer[4:N])
+	}
+	fmt.println("Success!");
+	os.close(fp)
+}