From: c vw <dl1ycf@darc.de>
Date: Wed, 26 May 2021 14:36:20 +0000 (+0200)
Subject: Corrected HermesLite2 gain behaviour
X-Git-Url: https://git.rkrishnan.org/listings/vdrive/index.php?a=commitdiff_plain;h=83335723f0a4353d8387a5080e67617e52be6ab0;p=pihpsdr.git

Corrected HermesLite2 gain behaviour
---

diff --git a/hpsdrsim.c b/hpsdrsim.c
index 083bc22..e925efa 100644
--- a/hpsdrsim.c
+++ b/hpsdrsim.c
@@ -1095,9 +1095,10 @@ void process_ep2(uint8_t *frame)
 	     // for a combined attenuator/preamplifier with the AD9866 chip.
 	     // The value is between 0 and 60 and formally correspondes to
 	     // to an RX gain of -12 to +48 dB. However, we set here that
-             // a value of +16 (that is, 28 on the 0-60 scale) corresponds to
+             // a value of +14 (that is, 26 on the 0-60 scale) corresponds to
              // "zero attenuation"
-	     chk_data(37 -(frame[4] & 0x3F) , rx_att[0], "RX1 HL ATT/GAIN");
+	     // This means that the nominal value of "RX gain calibration" is 14.
+	     chk_data(26 -(frame[4] & 0x3F) , rx_att[0], "RX1 HL ATT/GAIN");
            } else {
              chk_data((frame[4] & 0x1F) >> 0, rx_att[0], "RX1 ATT");
              chk_data((frame[4] & 0x20) >> 5, rx1_attE, "RX1 ATT enable");