From c193da8a255410dc05ae384b3a271a4794e40343 Mon Sep 17 00:00:00 2001
From: Ricardas Jonaitis <richard.jonaitis@gmail.com>
Date: Fri, 20 Sep 2024 10:59:50 +0300
Subject: [PATCH] LMS7002M: don't calibrate CG_IAMP value when setting Tx LPF
 if custom configuration was loaded

---
 src/chips/LMS7002M/LMS7002M.cpp    | 14 ++++++++++++--
 src/include/limesuiteng/LMS7002M.h |  1 +
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/chips/LMS7002M/LMS7002M.cpp b/src/chips/LMS7002M/LMS7002M.cpp
index 29566a0b..a9a53a15 100644
--- a/src/chips/LMS7002M/LMS7002M.cpp
+++ b/src/chips/LMS7002M/LMS7002M.cpp
@@ -271,6 +271,7 @@ LMS7002M::LMS7002M(std::shared_ptr<ISPI> port)
     , controlPort(port)
     , mC_impl(nullptr)
     , skipExternalDataInterfaceUpdate(false)
+    , customConfigFileIsLoaded(false)
 {
     struct lms7002m_hooks hooks {
     };
@@ -395,7 +396,7 @@ OpStatus LMS7002M::ResetChip()
 
     status = SPI_write_batch(addrs.data(), values.data(), addrs.size(), true);
     status = Modify_SPI_Reg_bits(LMS7002MCSR::MIMO_SISO, 0); //enable B channel after reset
-
+    customConfigFileIsLoaded = false;
     return status;
 }
 
@@ -585,6 +586,7 @@ OpStatus LMS7002M::LoadConfigLegacyFile(const std::string& filename)
             }
         }
     }
+    customConfigFileIsLoaded = true;
     return OpStatus::Success;
 }
 
@@ -689,7 +691,7 @@ OpStatus LMS7002M::LoadConfig(const std::string& filename, bool tuneDynamicValue
     }
 
     ResetLogicRegisters();
-
+    customConfigFileIsLoaded = true;
     if (tuneDynamicValues)
     {
         Modify_SPI_Reg_bits(LMS7002MCSR::MAC, 2);
@@ -2092,6 +2094,14 @@ OpStatus LMS7002M::SetTxLPF(double rfBandwidth_Hz)
     OpStatus status = ResultToStatus(result);
     if (status != OpStatus::Success)
         return status;
+
+    // do not calibrate tx gain if custom config file is loaded to maintain custom values
+    if (customConfigFileIsLoaded)
+    {
+        lime::warning("Custom .ini configuration file is loaded, SetTxLPF will not calibrate CG_IAMP_TBB");
+        return status;
+    }
+
     return CalibrateTxGain();
 }
 
diff --git a/src/include/limesuiteng/LMS7002M.h b/src/include/limesuiteng/LMS7002M.h
index 891c3bda..96823354 100644
--- a/src/include/limesuiteng/LMS7002M.h
+++ b/src/include/limesuiteng/LMS7002M.h
@@ -931,6 +931,7 @@ class LIME_API LMS7002M
 
     lms7002m_context* mC_impl;
     bool skipExternalDataInterfaceUpdate;
+    bool customConfigFileIsLoaded;
 };
 } // namespace lime
 #endif