X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/rigol/blobdiff_plain/58a9e2764568da62bbb285f8892d68d028674d4a..0b7a29d92ef3656b4c740b313f901a9d62f593a3:/commands.c

diff --git a/commands.c b/commands.c
new file mode 100644
index 0000000..f5b3973
--- /dev/null
+++ b/commands.c
@@ -0,0 +1,167 @@
+#include <usb.h>
+#include <stdio.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include "png.h"
+#include "usbtmc.h"
+#include "commands.h"
+
+void do_plot (struct usb_dev_handle *sc)
+{
+	unsigned char ch1[1024], ch2[1024];
+	int i, l;
+
+	static FILE *gnuplot=NULL;
+	FILE *fp;
+
+	l = usbtmc_sendscpi(sc, ":WAV:DATA? CHANEL1", ch1, 1024);
+
+	if (l != 1024) {
+		printf ("hmm. didnt' get 1024 bytes. \n"); 
+	}
+
+	l = usbtmc_sendscpi(sc, ":WAV:DATA? CHANNEL2", ch2, 1024);
+
+	if (l != 1024) {
+		printf ("hmm. didnt' get 1024 bytes. \n"); 
+	}
+
+	if (!gnuplot) {
+		gnuplot = popen ("gnuplot", "w"); 
+	}
+
+	fp = fopen ("temp.dat", "w");
+	for (i=0xd4;i<0x32c;i++)
+		//for (i=0;i<0x400;i++)
+		fprintf (fp, "%d %d\n", 255 - ch1[i], 255 - ch2[i]);
+	fclose (fp); 
+
+	fprintf (gnuplot, "plot 'temp.dat' using 1 with lines, 'temp.dat' using 2 with lines\n");
+	fflush (gnuplot);
+}
+
+
+#define ERROR -1e100
+
+static double get_float_from_scope (struct usb_dev_handle *sc, char *var)
+{
+	unsigned char buf[1024];
+	double temp;
+	int l;
+
+	l = usbtmc_sendscpi(sc, var, buf, 1024);
+	if (l > 0) {
+		sscanf ((char*)buf, "%lf", &temp); 
+		return temp;
+	}
+	return ERROR;
+}
+
+
+void do_get_buf (struct usb_dev_handle *sc)
+{
+	FILE *fp;
+	int i, j, l, bp;
+	char buf[1024];
+	unsigned char ch1[1024];
+	unsigned char data[512*1024];
+	double sampfreq;
+
+	usbtmc_sendscpi (sc, ":STOP", NULL, 0); 
+
+	sampfreq = get_float_from_scope (sc, ":ACQ:SAMP?");
+
+	printf ("Got sampling freq: %g\n", sampfreq);  
+
+	sprintf (buf, ":TIM:SCAL %.15f", 50 / sampfreq);
+	printf ("sending scale cmd: %s\n", buf); 
+	usbtmc_sendscpi (sc, buf, NULL, 0);
+
+	sleep (1);
+
+	bp=0;
+	for (i=-254*1024;i< 254*1024;i += 600) {
+		sprintf (buf, ":TIM:OFFSET %.15f", i / sampfreq);
+		printf ("Sending offset cmd:  %s\n", buf); 
+		usbtmc_sendscpi (sc, buf, NULL, 0);
+
+		l = usbtmc_sendscpi(sc, ":WAV:DATA? CHANEL1", ch1, 1024);
+
+		if (l != 1024) {
+			printf ("hmm. didnt' get 1024 bytes. \n"); 
+		}
+
+		for (j=0;j<600;j++)
+			data[bp++] = ch1[j+0xd4];
+	}
+	printf ("Got %d bytes of data. \n", bp);
+
+	fp = fopen ("ch1.dump", "w");
+	fwrite (data, bp, 1, fp);
+	fclose (fp); 
+
+	usbtmc_sendscpi (sc, ":TIM:OFFSET 0", NULL, 0);
+}
+
+void do_get_screen(struct usb_dev_handle *sc)
+{
+	unsigned char screen[320*234];
+	time_t lt;
+	char filename[256];
+	unsigned char *png;
+	int imglen;
+	int ret;
+	int l;
+	int fd;
+	pid_t display;
+
+	/* Hide "RMT" from screen */
+	l = usbtmc_sendscpi(sc, ":KEY:LOCK DISABLE", NULL, 0); 
+	usleep(20000);
+
+	l = usbtmc_sendscpi(sc, ":LCD:DATA?", screen, sizeof(screen));
+
+	if (l != sizeof(screen)) {
+		printf ("hmm. didnt' get %d bytes, but %d\n\n", sizeof(screen), l); 
+	}
+
+	png = lcd2png(screen, &imglen);
+
+	lt = time(NULL);
+	strftime(filename, sizeof(filename), "screen_%Y%m%d-%H%M%S.png", localtime(&lt));
+	fd=open(filename, O_CREAT|O_WRONLY, 0644);
+	if (fd == -1) {
+		perror("open");
+		exit(EXIT_FAILURE);
+	}
+
+	while(imglen > 0) {
+		ret = write(fd, png, imglen);
+		if (ret == -1) {
+			perror("write");
+			exit(EXIT_FAILURE);
+		}
+		imglen -= ret;
+	}
+	close(fd);
+	free(png);
+
+	printf("Waveform saved as %s\n", filename);
+
+	display = fork();
+	switch(display) {
+		case 0:
+			execlp("display", "display", filename, NULL);
+			exit(0);
+			break;
+		case -1:
+			perror("fork");
+			break;
+		default:
+			break;
+	}
+}
+