It works.

.vscode/launch.json

@@ -4,6 +4,7 @@
     "version": "0.2.0",
     "projectName": "IN12x5",
     "configurations": [
+    
         {
             "name": "JLink launch",
             "cwd": "${workspaceRoot}",

MDK-ARM/MNC-IN12x5.uvoptx

@@ -89,11 +89,11 @@
         <sRfunc>1</sRfunc>
         <sRbox>1</sRbox>
         <tLdApp>1</tLdApp>
-        <tGomain>1</tGomain>
+        <tGomain>0</tGomain>
         <tRbreak>1</tRbreak>
         <tRwatch>1</tRwatch>
         <tRmem>1</tRmem>
-        <tRfunc>1</tRfunc>
+        <tRfunc>0</tRfunc>
         <tRbox>1</tRbox>
         <tRtrace>1</tRtrace>
         <sRSysVw>1</sRSysVw>
@@ -117,6 +117,11 @@
         <pMon>Segger\JL2CM3.dll</pMon>
       </DebugOpt>
       <TargetDriverDllRegistry>
+        <SetRegEntry>
+          <Number>0</Number>
+          <Key>DLGDARM</Key>
+          <Name>(1010=-1,-1,-1,-1,0)(1007=-1,-1,-1,-1,0)(1008=-1,-1,-1,-1,0)(1009=-1,-1,-1,-1,0)</Name>
+        </SetRegEntry>
         <SetRegEntry>
           <Number>0</Number>
           <Key>ARMRTXEVENTFLAGS</Key>
@@ -130,17 +135,17 @@
         <SetRegEntry>
           <Number>0</Number>
           <Key>ARMDBGFLAGS</Key>
-          <Name></Name>
+          <Name>-T0</Name>
         </SetRegEntry>
         <SetRegEntry>
           <Number>0</Number>
           <Key>DLGUARM</Key>
-          <Name>ИЪxw</Name>
+          <Name>ИЪЭw</Name>
         </SetRegEntry>
         <SetRegEntry>
           <Number>0</Number>
           <Key>JL2CM3</Key>
-          <Name>-U20090928 -O78 -S2 -ZTIFSpeedSel5000 -A0 -C0 -JU1 -JI127.0.0.1 -JP0 -RST0 -N00("ARM CoreSight SW-DP") -D00(0BC11477) -L00(0) -TO18 -TC10000000 -TP21 -TDS8008 -TDT0 -TDC1F -TIEFFFFFFFF -TIP8 -TB1 -TFE0 -FO15 -FD20000000 -FC1000 -FN1 -FF0STM32G0xx_64.FLM -FS08000000 -FL010000 -FP0($$Device:STM32G030K8Tx$CMSIS\Flash\STM32G0xx_64.FLM)</Name>
+          <Name>-U4294967295 -O78 -S2 -ZTIFSpeedSel5000 -A0 -C0 -JU1 -JI127.0.0.1 -JP0 -RST0 -N00("ARM CoreSight SW-DP") -D00(0BC11477) -L00(0) -TO18 -TC10000000 -TP21 -TDS8008 -TDT0 -TDC1F -TIEFFFFFFFF -TIP8 -TB1 -TFE0 -FO15 -FD20000000 -FC1000 -FN1 -FF0STM32G0xx_64.FLM -FS08000000 -FL010000 -FP0($$Device:STM32G030K8Tx$CMSIS\Flash\STM32G0xx_64.FLM)</Name>
         </SetRegEntry>
         <SetRegEntry>
           <Number>0</Number>
@@ -150,7 +155,7 @@
         <SetRegEntry>
           <Number>0</Number>
           <Key>ST-LINKIII-KEIL_SWO</Key>
-          <Name>-U3D18070029135147324D4E00 -O2254 -SF1800 -C0 -A0 -I0 -HNlocalhost -HP7184 -P1 -N00("") -D00(00000000) -L00(0) -TO131090 -TC10000000 -TT10000000 -TP21 -TDS8007 -TDT0 -TDC1F -TIEFFFFFFFF -TIP8 -FO7 -FD20000000 -FC1000 -FN1 -FF0STM32G0xx_64.FLM -FS08000000 -FL010000 -FP0($$Device:STM32G030K8Tx$CMSIS\Flash\STM32G0xx_64.FLM)</Name>
+          <Name>-U3D18070029135147324D4E00 -O2254 -SF1800 -C0 -A0 -I0 -HNlocalhost -HP7184 -P1 -N00("ARM CoreSight SW-DP (ARM Core") -D00(0BC11477) -L00(0) -TO131090 -TC10000000 -TT10000000 -TP21 -TDS8007 -TDT0 -TDC1F -TIEFFFFFFFF -TIP8 -FO7 -FD20000000 -FC1000 -FN1 -FF0STM32G0xx_64.FLM -FS08000000 -FL010000 -FP0($$Device:STM32G030K8Tx$CMSIS\Flash\STM32G0xx_64.FLM)</Name>
         </SetRegEntry>
       </TargetDriverDllRegistry>
       <Breakpoint/>
@@ -209,6 +214,14 @@
           <Name>System Viewer\EXTI</Name>
           <WinId>35903</WinId>
         </Entry>
+        <Entry>
+          <Name>System Viewer\GPIOA</Name>
+          <WinId>35895</WinId>
+        </Entry>
+        <Entry>
+          <Name>System Viewer\GPIOB</Name>
+          <WinId>35896</WinId>
+        </Entry>
         <Entry>
           <Name>System Viewer\GPIOC</Name>
           <WinId>35897</WinId>

Src/clock.c

@@ -159,7 +159,7 @@ void showTime(void) {
   RTOS_SetTask(MinusFadeOut, 500, 0);
 
   uint8_t hue = bcd2bin(Clock.Sec);// * 6;
-  HSV2LED(hue, 255, 255);
+  HSV2LED(hue, 255, 63);
 
   tube4_t buf;
 /*

Src/stm32g0xx_it.c

@@ -20,8 +20,6 @@
 #include "main.h"
 #include "stm32g0xx_it.h"
 
-#pragma GCC optimize ("O0")
-
 /* Private includes ----------------------------------------------------------*/
 /* Private typedef -----------------------------------------------------------*/
 /* Private define ------------------------------------------------------------*/

in12x5.jlink

@@ -2,6 +2,7 @@ if swd
 speed 4000
 device stm32g030k8
 loadfile build\MNC-IN12x5.hex
+#loadfile MDK-ARM\OUT\MNC-IN12x5.hex
 r
 g
 q