Add GETHORIZTIMEBASE to gpib server

1 files changed, 49 insertions, 0 deletions

diff --git a/servers/gpib_server_lin/src/scope_functions.cpp b/servers/gpib_server_lin/src/scope_functions.cpp
index 5b3e34c..1e7c4ae 100644
--- a/servers/gpib_server_lin/src/scope_functions.cpp
+++ b/servers/gpib_server_lin/src/scope_functions.cpp
@@ -273,6 +273,55 @@ int scope_set_timebase(float desired_timebase,const char * scopeType, int gpibDe
 	}
 }
 
+int scope_get_timebase(double * retval, const char * scopeType, int gpibDevice) {
+	char floatstring[1024];
+	long ai;
+	int max_num_bytes = 0;
+
+	if (strcmp("HP54600OS", scopeType) == 0) {
+		// FIXME
+		// Not supported (yet)
+		return -1;
+	}
+	else if (strcmp("TDS744AOS", scopeType) == 0) {
+		// Send request
+		printf("[INFO] Getting scope timebase\n\r");
+		sprintf(falpha,"HORIZONTAL:MAIN:SCALE?");
+		#ifdef ENABLE_EXTRA_DEBUGGING
+		printf("[DEBG] Writing: %s\n\r", falpha);
+		#endif
+		if (gpib_write(gpibDevice, falpha) == 0) {
+			max_num_bytes = 24;	// Request more bytes than are possible to ensure no bytes are left behind
+		}
+		else {
+			return 2;
+		}
+
+		// Read response
+		#ifdef ENABLE_EXTRA_DEBUGGING
+		printf("[DEBG] Trying to read %i bytes from GPIB device...\n", max_num_bytes);
+		#endif
+
+		ai = gpib_read_array(gpibDevice, max_num_bytes, floatstring);
+		if (ai == -1) {
+			return 1;
+		}
+		else {
+			floatstring[ai]=0;
+			*retval = atof(floatstring)*10;
+		}
+
+		#ifdef ENABLE_EXTRA_DEBUGGING
+		printf("[DEBG] Read %li bytes from GPIB device\n", ai);
+		#endif
+
+		return 0;
+	}
+	else {
+		return -1;
+	}
+}
+
 int scope_set_volts_div(int desired_channel, double desired_volts, const char * scopeType, int gpibDevice) {
 	if ((strcmp("HP54600OS", scopeType) == 0) || (strcmp("TDS744AOS", scopeType) == 0)) {
 		printf("[INFO] Setting scope volts/div on channel %d to %E\n\r", desired_channel, desired_volts);