diff --git a/radio/src/gui/128x64/view_statistics.cpp b/radio/src/gui/128x64/view_statistics.cpp
index 163a99743..4e132a1eb 100644
--- a/radio/src/gui/128x64/view_statistics.cpp
+++ b/radio/src/gui/128x64/view_statistics.cpp
@@ -184,18 +184,18 @@ void menuStatisticsDebug(event_t event)
 
 #if defined(COPROCESSOR)
   lcdDrawTextAlignedLeft(y, STR_COPROC_TEMP);
-  if (Coproc_read==0) {
+  if (coprocData.read==0) {
     lcdDrawText(MENU_DEBUG_COL1_OFS, y, "Co Proc NACK",INVERS);
   }
-  else if (Coproc_read==0x81) {
+  else if (coprocData.read==0x81) {
     lcdDrawText(MENU_DEBUG_COL1_OFS, y, "Inst.TinyApp",INVERS);
   }
-  else if (Coproc_read<3) {
+  else if (coprocData.read<3) {
     lcdDrawText(MENU_DEBUG_COL1_OFS, y, "Upgr.TinyApp",INVERS);
   }
   else {
-    drawValueWithUnit(MENU_DEBUG_COL1_OFS, y, Coproc_temp, UNIT_TEMPERATURE, LEFT);
-    drawValueWithUnit(MENU_DEBUG_COL2_OFS, y, Coproc_maxtemp, UNIT_TEMPERATURE, LEFT);
+    drawValueWithUnit(MENU_DEBUG_COL1_OFS, y, coprocData.temp, UNIT_TEMPERATURE, LEFT);
+    drawValueWithUnit(MENU_DEBUG_COL2_OFS, y, coprocData.maxtemp, UNIT_TEMPERATURE, LEFT);
   }
   y += FH;
 #endif
diff --git a/radio/src/gui/common/stdlcd/radio_version.cpp b/radio/src/gui/common/stdlcd/radio_version.cpp
index 068879c9e..ce6e30e59 100644
--- a/radio/src/gui/common/stdlcd/radio_version.cpp
+++ b/radio/src/gui/common/stdlcd/radio_version.cpp
@@ -241,8 +241,8 @@ void menuRadioVersion(event_t event)
 
 #if defined(COPROCESSOR)
   lcdDrawText(FW, y, "COPR\037\033: ", SMLSIZE);
-  if (Coproc_valid == 1)
-    lcdDrawNumber(lcdNextPos, y, Coproc_read, SMLSIZE);
+  if (coprocData.valid == 1)
+    lcdDrawNumber(lcdNextPos, y, coprocData.read, SMLSIZE);
   else
     lcdDrawText(lcdNextPos, y, "---", SMLSIZE);
   y += FH - 1;
diff --git a/radio/src/simu.cpp b/radio/src/simu.cpp
index 848d25bc5..b92e16dab 100644
--- a/radio/src/simu.cpp
+++ b/radio/src/simu.cpp
@@ -360,8 +360,8 @@ long OpenTxSim::onTimeout(FXObject*, FXSelector, void*)
 {
   if (hasFocus()) {
 #if defined(COPROCESSOR)
-    Coproc_temp = 23;
-    Coproc_maxtemp = 28;
+    coprocData.temp = 23;
+    coprocData.maxtemp = 28;
 #endif
 
     updateKeysAndSwitches();
diff --git a/radio/src/targets/simu/simpgmspace.cpp b/radio/src/targets/simu/simpgmspace.cpp
index d9228898f..f639fb961 100644
--- a/radio/src/targets/simu/simpgmspace.cpp
+++ b/radio/src/targets/simu/simpgmspace.cpp
@@ -742,6 +742,18 @@ void disableSpeaker()
 }
 #endif
 
+#if defined(COPROCESSOR)
+CoprocData coprocData;
+
+void coprocReadData(bool)
+{
+}
+#endif
+
+void rtcInit()
+{
+}
+
 void rtcSetTime(const struct gtm * t)
 {
 }
diff --git a/radio/src/targets/sky9x/board.h b/radio/src/targets/sky9x/board.h
index d44b11356..bb38311e9 100644
--- a/radio/src/targets/sky9x/board.h
+++ b/radio/src/targets/sky9x/board.h
@@ -340,10 +340,15 @@ void coprocWriteData(uint8_t *data, uint32_t size);
 void coprocReadData(bool onlytemp=false);
 #endif
 extern int8_t volumeRequired;
-extern uint8_t Coproc_read;
-extern int8_t Coproc_valid;
-extern int8_t Coproc_temp;
-extern int8_t Coproc_maxtemp;
+
+struct CoprocData {
+  uint8_t read;
+  int8_t valid;
+  int8_t temp;
+  int8_t maxtemp;
+};
+
+extern CoprocData coprocData;
 
 // Haptic driver
 #define HAPTIC_PWM
diff --git a/radio/src/targets/sky9x/coproc_driver.cpp b/radio/src/targets/sky9x/coproc_driver.cpp
index cf5ab1be3..8a4beb31c 100644
--- a/radio/src/targets/sky9x/coproc_driver.cpp
+++ b/radio/src/targets/sky9x/coproc_driver.cpp
@@ -25,10 +25,7 @@ uint8_t coprocReadDataPending ;
 uint8_t coprocWriteDataPending ;
 uint8_t CoProc_appgo_pending ;
 uint8_t Volume_read ;
-uint8_t Coproc_read ;
-int8_t Coproc_temp ;
-int8_t Coproc_maxtemp=-127 ;
-int8_t Coproc_valid ;
+CoprocData coprocData;
 bool get_onlytemp;
 #if !defined(SIMU)
 // TODO not used? static uint8_t *Twi_read_address ;
@@ -71,7 +68,7 @@ void i2cCheck()
     TWI0->TWI_CR = TWI_CR_STOP ;    // Stop Tx
   }
   else if (coprocReadDataPending) {
-    Coproc_valid = 0 ;
+    coprocData.valid = 0 ;
     coprocReadDataPending = 0 ;
     TWI0->TWI_MMR = 0x00351000 ;    // Device 35 and master is reading
     TwiOperation = TWI_READ_COPROC ;
@@ -142,15 +139,15 @@ extern "C" void TWI0_IRQHandler()
     }
     else
     {
-      Coproc_valid = -1 ;
+      coprocData.valid = -1 ;
     }
   }
 
   if ( TwiOperation == TWI_WAIT_STOP )
   {
-    Coproc_valid = 1 ;
-    Coproc_read = Co_proc_status[0] ;
-    if ( Coproc_read & 0x80 ) {
+    coprocData.valid = 1 ;
+    coprocData.read = Co_proc_status[0] ;
+    if ( coprocData.read & 0x80 ) {
       // Bootloader
       CoProc_appgo_pending = 1 ;  // Action application
     }
@@ -167,9 +164,9 @@ extern "C" void TWI0_IRQHandler()
         utm.tm_year = (Co_proc_status[6] + ( Co_proc_status[7] << 8 )) - TM_YEAR_BASE;
         g_rtcTime = gmktime(&utm);
       }
-      Coproc_temp = Co_proc_status[8];
-      if (Coproc_temp > Coproc_maxtemp)
-        Coproc_maxtemp=Coproc_temp;
+      coprocData.temp = Co_proc_status[8];
+      if (coprocData.temp > coprocData.maxtemp)
+        coprocData.maxtemp = coprocData.temp;
     }
     TWI0->TWI_PTCR = TWI_PTCR_RXTDIS ;  // Stop transfers
     if ( TWI0->TWI_SR & TWI_SR_RXRDY ) {