expansion DACs default to zero at power-up

1 files changed, 3 insertions, 1 deletions

diff --git a/instr-daemon.c b/instr-daemon.c
index 45ba979..24ca15b 100644
--- a/instr-daemon.c
+++ b/instr-daemon.c
@@ -244,10 +244,12 @@ int main(int argc, char **argv)
 
 	int i;
 	for (i=0; i<std_dacs; i++) {
+		// on-board DACs have configurable default values
 		set_dac(i,globals.Flash.initial_dac_settings[i]);
 	}
 	for (i=std_dacs; i<max_dacs; i++) {
-		set_dac(i,dac_max/8);
+		// expansion DACs default to zero at power-up
+		set_dac(i,0);
 	}
 
 	fixFlash(&globals.Flash);