Fix VPP reading

Author: edlf

ddr5spd.cpp

@@ -676,11 +676,17 @@ void DDR5SPD::settCCD_M_WTR_tick(const unsigned short tick) {
 }
 
 const unsigned short DDR5SPD::getVPP() {
-  return utilities::ConvertByteToVoltageDDR5(spdStruct.voltageVPP);
+  if (spdStruct.voltageVPP == 0x00) {
+    return 180;
+  }
+
+  return 0;
 }
 
 void DDR5SPD::setVPP(const unsigned short vpp) {
-  spdStruct.voltageVPP = utilities::ConvertVoltageToByteDDR5(vpp);
+  if (vpp == 180) {
+    spdStruct.voltageVPP = 0x00;
+  }
 }
 
 const unsigned short DDR5SPD::getVDD() {

ddr5spd_structs.h

@@ -300,7 +300,7 @@ struct SPD_Struct {
   // Byte 16-18 (Voltages, 1.1v)
   unsigned char voltageVDD;   // 0x00 -> 1.1v
   unsigned char voltageVDDQ;  // 0x00 -> 1.1v
-  unsigned char voltageVPP;   // 0x00 -> 1.1v
+  unsigned char voltageVPP;   // 0x00 -> 1.8v Bits 7-4 Nominal, 3-2 Operable, 1-0 Endurant
   // Byte 19
   unsigned char sdramTimming;  // Should be 0x00 for JEDEC standard timmings
   // Byte 20-21

mainwindow.ui

@@ -1916,6 +1916,9 @@
             </item>
             <item row="0" column="5">
              <widget class="QSpinBox" name="sbVPP_JEDEC">
+              <property name="enabled">
+               <bool>false</bool>
+              </property>
               <property name="minimum">
                <number>110</number>
               </property>