hantek-dso: support for SR_HWCAP_COUPLING

[libsigrok.git] / hardware / hantek-dso / dso.c

diff --git a/hardware/hantek-dso/dso.c b/hardware/hantek-dso/dso.c
index 00dde6da1f14693aa68c554ad8881a7772a5317a..6e704cfb389d07f10524a335c05103c75cce729c 100644 (file)
--- a/hardware/hantek-dso/dso.c
+++ b/hardware/hantek-dso/dso.c
@@ -445,17 +445,18 @@ SR_PRIV int dso_set_relays(struct context *ctx)
        uint8_t relays[] = { 0x00, 0x04, 0x08, 0x02, 0x20, 0x40, 0x10, 0x01,
                        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
 
-       sr_dbg("hantek-dso: sending CTRL_SETRELAYS");
+       sr_dbg("hantek-dso: preparing CTRL_SETRELAYS");
 
        cv1 = ctx->voltage_ch1 / 3;
        cv2 = ctx->voltage_ch2 / 3;
-relays[0] = 0x01;
+
        if (cv1 > 0)
                relays[1] = ~relays[1];
 
        if (cv1 > 1)
                relays[2] = ~relays[2];
 
+       sr_dbg("hantek-dso: CH1 coupling %d", ctx->coupling_ch1);
        if (ctx->coupling_ch1 != COUPLING_AC)
                relays[3] = ~relays[3];
 
@@ -465,6 +466,7 @@ relays[0] = 0x01;
        if (cv2 > 1)
                relays[5] = ~relays[5];
 
+       sr_dbg("hantek-dso: CH2 coupling %d", ctx->coupling_ch1);
        if (ctx->coupling_ch2 != COUPLING_AC)
                relays[6] = ~relays[6];
 
@@ -477,6 +479,7 @@ relays[0] = 0x01;
                sr_err("failed to set relays: %d", ret);
                return SR_ERR;
        }
+       sr_dbg("hantek-dso: sent CTRL_SETRELAYS");
 
        return SR_OK;
 }