Add ST24 test harness

Tools/tests-host/st24_test.cpp

@@ -0,0 +1,58 @@
+
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <systemlib/err.h>
+#include <drivers/drv_hrt.h>
+#include <px4iofirmware/px4io.h>
+#include "../../src/systemcmds/tests/tests.h"
+
+int main(int argc, char *argv[]) {
+	warnx("ST24 test started");
+
+	if (argc < 2)
+		errx(1, "Need a filename for the input file");
+
+	warnx("loading data from: %s", argv[1]);
+
+	FILE *fp;
+	
+	fp = fopen(argv[1],"rt");
+
+	if (!fp)
+		errx(1, "failed opening file");
+
+	float f;
+	unsigned x;
+	int ret;
+
+	// Trash the first 20 lines
+	for (unsigned i = 0; i < 20; i++) {
+		(void)fscanf(fp, "%f,%x,,", &f, &x);
+	}
+
+	float last_time = 0;
+
+	while (EOF != (ret = fscanf(fp, "%f,%x,,", &f, &x))) {
+		if (((f - last_time) * 1000 * 1000) > 3000) {
+			warnx("FRAME RESET\n\n");
+		}
+
+		warnx("%f: 0x%02x", (double)f, x);
+
+		last_time = f;
+
+		// Pipe the data into the parser
+		hrt_abstime now = hrt_absolute_time();
+
+		//if (partial_frame_count % 25 == 0)
+			//sbus_parse(now, frame, &partial_frame_count, rc_values, &num_values, &sbus_failsafe, &sbus_frame_drop, max_channels);
+	}
+
+	if (ret == EOF) {
+		warnx("Test finished, reached end of file");
+	} else {
+		warnx("Test aborted, errno: %d", ret);
+	}
+
+}