Voltcraft VC-830: Fix diode mode handling.

[libsigrok.git] / hardware / serial-dmm / api.c

diff --git a/hardware/serial-dmm/api.c b/hardware/serial-dmm/api.c
index b6987947f51891364e1d827e219b55f3ee8364e0..4e1e1e0135fa7315b4942491d7169260f54cbe91 100644 (file)
--- a/hardware/serial-dmm/api.c
+++ b/hardware/serial-dmm/api.c
@@ -172,10 +172,15 @@ SR_PRIV struct dmm_info dmms[] = {
                receive_data_VOLTCRAFT_VC820_SER,
        },
        {
+               /*
+                * Note: The VC830 doesn't set the 'volt' and 'diode' bits of
+                * the FS9922 protocol. Instead, it only sets the user-defined
+                * bit "z1" to indicate "diode mode" and "voltage".
+                */
                "Voltcraft", "VC-830 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
                2400, FS9922_PACKET_SIZE, NULL,
                sr_fs9922_packet_valid, sr_fs9922_parse,
-               NULL,
+               &sr_fs9922_z1_diode,
                &voltcraft_vc830_ser_driver_info,
                receive_data_VOLTCRAFT_VC830_SER,
        },