Change C++ standard to C++20 and toolchain to 10.0.1

Update uart submodule to expose baud rate
Add interface test for stk500v2 library callbacks
2026-08-05 22:05:30 +02:00 · 2026-08-05 22:03:22 +02:00 · 2026-08-05 21:54:32 +02:00 · 2026-08-05 21:46:39 +02:00 · 2020-04-13 17:20:31 +02:00 · 2020-04-13 13:08:34 +02:00
15 changed files with 997 additions and 246 deletions
--- a/.gitmodules
+++ b/.gitmodules
@@ -22,3 +22,6 @@
 [submodule "stk500v2/flash"]
 	path = stk500v2/flash
 	url = git@git.blackmark.me:avr/flash.git
+[submodule "blink/io"]
+	path = blink/io
+	url = git@git.blackmark.me:avr/io.git
--- a/blink/blink.cppproj
+++ b/blink/blink.cppproj
@@ -0,0 +1,239 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="14.0">
+  <PropertyGroup>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectVersion>7.0</ProjectVersion>
+    <ToolchainName>com.Atmel.AVRGCC8.CPP</ToolchainName>
+    <ProjectGuid>{d887fc8e-ee68-4248-8382-92dbc9a54145}</ProjectGuid>
+    <avrdevice>ATmega328P</avrdevice>
+    <avrdeviceseries>none</avrdeviceseries>
+    <OutputType>Executable</OutputType>
+    <Language>CPP</Language>
+    <OutputFileName>$(MSBuildProjectName)</OutputFileName>
+    <OutputFileExtension>.elf</OutputFileExtension>
+    <OutputDirectory>$(MSBuildProjectDirectory)\$(Configuration)</OutputDirectory>
+    <AssemblyName>blink</AssemblyName>
+    <Name>blink</Name>
+    <RootNamespace>blink</RootNamespace>
+    <ToolchainFlavour>avr-g++-9.1.0</ToolchainFlavour>
+    <KeepTimersRunning>true</KeepTimersRunning>
+    <OverrideVtor>false</OverrideVtor>
+    <CacheFlash>true</CacheFlash>
+    <ProgFlashFromRam>true</ProgFlashFromRam>
+    <RamSnippetAddress>0x20000000</RamSnippetAddress>
+    <UncachedRange />
+    <preserveEEPROM>true</preserveEEPROM>
+    <OverrideVtorValue>exception_table</OverrideVtorValue>
+    <BootSegment>2</BootSegment>
+    <ResetRule>0</ResetRule>
+    <eraseonlaunchrule>0</eraseonlaunchrule>
+    <EraseKey />
+    <avrtool>com.atmel.avrdbg.tool.atmelice</avrtool>
+    <avrtoolserialnumber>J41800099437</avrtoolserialnumber>
+    <avrdeviceexpectedsignature>0x1E950F</avrdeviceexpectedsignature>
+    <com_atmel_avrdbg_tool_stk500>
+      <ToolOptions>
+        <InterfaceProperties>
+          <IspClock>125000</IspClock>
+        </InterfaceProperties>
+        <InterfaceName>ISP</InterfaceName>
+      </ToolOptions>
+      <ToolType>com.atmel.avrdbg.tool.stk500</ToolType>
+      <ToolNumber>
+      </ToolNumber>
+      <ToolName>STK500</ToolName>
+    </com_atmel_avrdbg_tool_stk500>
+    <avrtoolinterface>ISP</avrtoolinterface>
+    <avrtoolinterfaceclock>125000</avrtoolinterfaceclock>
+    <AsfFrameworkConfig>
+      <framework-data xmlns="">
+        <options />
+        <configurations />
+        <files />
+        <documentation help="" />
+        <offline-documentation help="" />
+        <dependencies>
+          <content-extension eid="atmel.asf" uuidref="Atmel.ASF" version="3.47.0" />
+        </dependencies>
+      </framework-data>
+    </AsfFrameworkConfig>
+    <com_atmel_avrdbg_tool_atmelice>
+      <ToolOptions>
+        <InterfaceProperties>
+          <IspClock>125000</IspClock>
+        </InterfaceProperties>
+        <InterfaceName>ISP</InterfaceName>
+      </ToolOptions>
+      <ToolType>com.atmel.avrdbg.tool.atmelice</ToolType>
+      <ToolNumber>J41800099437</ToolNumber>
+      <ToolName>Atmel-ICE</ToolName>
+    </com_atmel_avrdbg_tool_atmelice>
+    <custom>
+      <ToolOptions>
+        <InterfaceProperties>
+          <IspClock>125000</IspClock>
+        </InterfaceProperties>
+        <InterfaceName>
+        </InterfaceName>
+      </ToolOptions>
+      <ToolType>custom</ToolType>
+      <ToolNumber>
+      </ToolNumber>
+      <ToolName>Custom Programming Tool</ToolName>
+    </custom>
+    <com_atmel_avrdbg_tool_simulator>
+      <ToolOptions xmlns="">
+        <InterfaceProperties>
+        </InterfaceProperties>
+        <InterfaceName>
+        </InterfaceName>
+      </ToolOptions>
+      <ToolType xmlns="">com.atmel.avrdbg.tool.simulator</ToolType>
+      <ToolNumber xmlns="">
+      </ToolNumber>
+      <ToolName xmlns="">Simulator</ToolName>
+    </com_atmel_avrdbg_tool_simulator>
+    <AAFDebugger>
+      <AAFDebugFiles>
+      </AAFDebugFiles>
+    </AAFDebugger>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
+    <ToolchainSettings>
+      <AvrGccCpp>
+        <avrgcc.common.Device>-mmcu=atmega328p</avrgcc.common.Device>
+        <avrgcc.common.outputfiles.hex>True</avrgcc.common.outputfiles.hex>
+        <avrgcc.common.outputfiles.lss>True</avrgcc.common.outputfiles.lss>
+        <avrgcc.common.outputfiles.eep>True</avrgcc.common.outputfiles.eep>
+        <avrgcc.common.outputfiles.srec>True</avrgcc.common.outputfiles.srec>
+        <avrgcc.common.outputfiles.usersignatures>False</avrgcc.common.outputfiles.usersignatures>
+        <avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>
+        <avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>
+        <avrgcc.compiler.symbols.DefSymbols>
+          <ListValues>
+            <Value>NDEBUG</Value>
+          </ListValues>
+        </avrgcc.compiler.symbols.DefSymbols>
+        <avrgcc.compiler.directories.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.346\include</Value>
+          </ListValues>
+        </avrgcc.compiler.directories.IncludePaths>
+        <avrgcc.compiler.optimization.level>Optimize for size (-Os)</avrgcc.compiler.optimization.level>
+        <avrgcc.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcc.compiler.optimization.AllocateBytesNeededForEnum>
+        <avrgcc.compiler.warnings.AllWarnings>True</avrgcc.compiler.warnings.AllWarnings>
+        <avrgcc.compiler.warnings.ExtraWarnings>True</avrgcc.compiler.warnings.ExtraWarnings>
+        <avrgcc.compiler.warnings.Pedantic>True</avrgcc.compiler.warnings.Pedantic>
+        <avrgcc.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -std=c11</avrgcc.compiler.miscellaneous.OtherFlags>
+        <avrgcccpp.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcccpp.compiler.general.ChangeDefaultCharTypeUnsigned>
+        <avrgcccpp.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcccpp.compiler.general.ChangeDefaultBitFieldUnsigned>
+        <avrgcccpp.compiler.symbols.DefSymbols>
+          <ListValues>
+            <Value>NDEBUG</Value>
+          </ListValues>
+        </avrgcccpp.compiler.symbols.DefSymbols>
+        <avrgcccpp.compiler.directories.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.346\include</Value>
+          </ListValues>
+        </avrgcccpp.compiler.directories.IncludePaths>
+        <avrgcccpp.compiler.optimization.level>Optimize for size (-Os)</avrgcccpp.compiler.optimization.level>
+        <avrgcccpp.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcccpp.compiler.optimization.AllocateBytesNeededForEnum>
+        <avrgcccpp.compiler.warnings.AllWarnings>True</avrgcccpp.compiler.warnings.AllWarnings>
+        <avrgcccpp.compiler.warnings.Pedantic>True</avrgcccpp.compiler.warnings.Pedantic>
+        <avrgcccpp.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -Wextra -std=c++17</avrgcccpp.compiler.miscellaneous.OtherFlags>
+        <avrgcccpp.linker.libraries.Libraries>
+          <ListValues>
+            <Value>libm</Value>
+          </ListValues>
+        </avrgcccpp.linker.libraries.Libraries>
+        <avrgcccpp.assembler.general.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.346\include</Value>
+          </ListValues>
+        </avrgcccpp.assembler.general.IncludePaths>
+      </AvrGccCpp>
+    </ToolchainSettings>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
+    <ToolchainSettings>
+      <AvrGccCpp>
+        <avrgcc.common.Device>-mmcu=atmega328p</avrgcc.common.Device>
+        <avrgcc.common.outputfiles.hex>True</avrgcc.common.outputfiles.hex>
+        <avrgcc.common.outputfiles.lss>True</avrgcc.common.outputfiles.lss>
+        <avrgcc.common.outputfiles.eep>True</avrgcc.common.outputfiles.eep>
+        <avrgcc.common.outputfiles.srec>True</avrgcc.common.outputfiles.srec>
+        <avrgcc.common.outputfiles.usersignatures>False</avrgcc.common.outputfiles.usersignatures>
+        <avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>
+        <avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>
+        <avrgcc.compiler.symbols.DefSymbols>
+          <ListValues>
+            <Value>DEBUG</Value>
+          </ListValues>
+        </avrgcc.compiler.symbols.DefSymbols>
+        <avrgcc.compiler.directories.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.346\include</Value>
+          </ListValues>
+        </avrgcc.compiler.directories.IncludePaths>
+        <avrgcc.compiler.optimization.level>Optimize (-O1)</avrgcc.compiler.optimization.level>
+        <avrgcc.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcc.compiler.optimization.AllocateBytesNeededForEnum>
+        <avrgcc.compiler.optimization.DebugLevel>Maximum (-g3)</avrgcc.compiler.optimization.DebugLevel>
+        <avrgcc.compiler.warnings.AllWarnings>True</avrgcc.compiler.warnings.AllWarnings>
+        <avrgcc.compiler.warnings.ExtraWarnings>True</avrgcc.compiler.warnings.ExtraWarnings>
+        <avrgcc.compiler.warnings.Pedantic>True</avrgcc.compiler.warnings.Pedantic>
+        <avrgcc.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -std=c11</avrgcc.compiler.miscellaneous.OtherFlags>
+        <avrgcccpp.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcccpp.compiler.general.ChangeDefaultCharTypeUnsigned>
+        <avrgcccpp.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcccpp.compiler.general.ChangeDefaultBitFieldUnsigned>
+        <avrgcccpp.compiler.symbols.DefSymbols>
+          <ListValues>
+            <Value>DEBUG</Value>
+          </ListValues>
+        </avrgcccpp.compiler.symbols.DefSymbols>
+        <avrgcccpp.compiler.directories.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.346\include</Value>
+          </ListValues>
+        </avrgcccpp.compiler.directories.IncludePaths>
+        <avrgcccpp.compiler.optimization.level>Optimize (-O1)</avrgcccpp.compiler.optimization.level>
+        <avrgcccpp.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcccpp.compiler.optimization.AllocateBytesNeededForEnum>
+        <avrgcccpp.compiler.optimization.DebugLevel>Maximum (-g3)</avrgcccpp.compiler.optimization.DebugLevel>
+        <avrgcccpp.compiler.warnings.AllWarnings>True</avrgcccpp.compiler.warnings.AllWarnings>
+        <avrgcccpp.compiler.warnings.Pedantic>True</avrgcccpp.compiler.warnings.Pedantic>
+        <avrgcccpp.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -Wextra -std=c++17</avrgcccpp.compiler.miscellaneous.OtherFlags>
+        <avrgcccpp.linker.libraries.Libraries>
+          <ListValues>
+            <Value>libm</Value>
+          </ListValues>
+        </avrgcccpp.linker.libraries.Libraries>
+        <avrgcccpp.assembler.general.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.346\include</Value>
+          </ListValues>
+        </avrgcccpp.assembler.general.IncludePaths>
+        <avrgcccpp.assembler.debugging.DebugLevel>Default (-Wa,-g)</avrgcccpp.assembler.debugging.DebugLevel>
+      </AvrGccCpp>
+    </ToolchainSettings>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="bootloader.cpp">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="bootloader.hpp">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="clock.hpp">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="io\io.hpp">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="main.cpp">
+      <SubType>compile</SubType>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <Folder Include="io" />
+  </ItemGroup>
+  <Import Project="$(AVRSTUDIO_EXE_PATH)\\Vs\\Compiler.targets" />
+</Project>
--- a/blink/bootloader.cpp
+++ b/blink/bootloader.cpp
@@ -0,0 +1,46 @@
+#include "bootloader.hpp"
+
+#include <avr/io.h>
+#include <avr/pgmspace.h>
+#include <avr/wdt.h>
+
+namespace {
+
+typedef void (*jmp_fn)() __attribute__((noreturn));
+
+jmp_fn boot = reinterpret_cast<jmp_fn>(0x0000);
+jmp_fn bootloader = reinterpret_cast<jmp_fn>(0x7800 / 2);
+
+} // namespace
+
+bool Bootloader::handleReset()
+{
+	wdt_reset();
+	uint8_t mcuStatus = MCUSR;
+	MCUSR &= ~(1 << WDRF);
+	wdt_disable();
+	return (mcuStatus & (1 << WDRF));
+}
+
+void Bootloader::reset()
+{
+	wdt_enable(WDTO_15MS);
+	while (true)
+		;
+}
+
+bool Bootloader::check()
+{
+	if (pgm_read_byte(reinterpret_cast<uint16_t>(bootloader) * 2) != 0xFF)
+		return true;
+
+	return false;
+}
+
+void Bootloader::call()
+{
+	if (check())
+		bootloader();
+	else
+		boot();
+}
--- a/blink/bootloader.hpp
+++ b/blink/bootloader.hpp
@@ -0,0 +1,24 @@
+#pragma once
+
+class Bootloader {
+  public:
+	template <typename Fn>
+	static inline void init(Fn callback)
+	{
+		if (handleReset()) {
+			callback();
+			call();
+		}
+	}
+
+	static inline void enter()
+	{
+		reset();
+	}
+
+  private:
+	static bool handleReset();
+	static void reset();
+	static bool check();
+	static void call();
+};
--- a/blink/clock.hpp
+++ b/blink/clock.hpp
@@ -0,0 +1,5 @@
+#pragma once
+
+//#define F_CPU 18'432'000
+#define F_CPU 16'000'000
+#include <util/delay.h>
--- a/blink/io
+++ b/blink/io
--- a/blink/main.cpp
+++ b/blink/main.cpp
@@ -0,0 +1,30 @@
+#include "clock.hpp"
+
+#include "io/io.hpp"
+
+#include "bootloader.hpp"
+
+int main()
+{
+	io::Pin<io::P::B5> ledPin;
+	ledPin.dir(io::Dir::OUT);
+	ledPin = false;
+
+	Bootloader::init([&ledPin]() {
+		for (uint8_t i = 0; i < 10; ++i) {
+			ledPin = true;
+			_delay_ms(50);
+			ledPin = false;
+			_delay_ms(50);
+		}
+	});
+
+	for (uint8_t i = 0; i < 10; ++i) {
+		ledPin.toggle();
+		_delay_ms(1000);
+	}
+
+	Bootloader::enter();
+
+	return 0;
+}
--- a/bootloader.atsln
+++ b/bootloader.atsln
@@ -7,6 +7,8 @@ Project("{E66E83B9-2572-4076-B26E-6BE79FF3018A}") = "tsb", "tsb\tsb.cppproj", "{
 EndProject
 Project("{E66E83B9-2572-4076-B26E-6BE79FF3018A}") = "stk500v2", "stk500v2\stk500v2.cppproj", "{19798CCE-5D96-40E9-B769-D209715DCE0C}"
 EndProject
+Project("{E66E83B9-2572-4076-B26E-6BE79FF3018A}") = "blink", "blink\blink.cppproj", "{D887FC8E-EE68-4248-8382-92DBC9A54145}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|AVR = Debug|AVR
@@ -21,6 +23,10 @@ Global
 		{19798CCE-5D96-40E9-B769-D209715DCE0C}.Debug|AVR.Build.0 = Debug|AVR
 		{19798CCE-5D96-40E9-B769-D209715DCE0C}.Release|AVR.ActiveCfg = Release|AVR
 		{19798CCE-5D96-40E9-B769-D209715DCE0C}.Release|AVR.Build.0 = Release|AVR
+		{D887FC8E-EE68-4248-8382-92DBC9A54145}.Debug|AVR.ActiveCfg = Debug|AVR
+		{D887FC8E-EE68-4248-8382-92DBC9A54145}.Debug|AVR.Build.0 = Debug|AVR
+		{D887FC8E-EE68-4248-8382-92DBC9A54145}.Release|AVR.ActiveCfg = Release|AVR
+		{D887FC8E-EE68-4248-8382-92DBC9A54145}.Release|AVR.Build.0 = Release|AVR
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
--- a/stk500v2/clock.hpp
+++ b/stk500v2/clock.hpp
@@ -1,4 +1,5 @@
 #pragma once

-#define F_CPU 18'432'000
+//#define F_CPU 18'432'000
+#define F_CPU 16'000'000
 #include <util/delay.h>
--- a/stk500v2/main.cpp
+++ b/stk500v2/main.cpp
@@ -1,5 +1,7 @@
 #include "clock.hpp"

+#include "stk500v2.hpp"
+
 #include "uart/uart.hpp"

 #include <math.h>
@@ -570,8 +572,62 @@ static inline void handleMessage(Message &msg, uint32_t &addr, uint16_t &finishE
 	transmitMessage(msg);
 }

+static inline void interfaceTest()
+{
+	constexpr auto onSignOn = []() {};
+	constexpr auto onSetParam = []() {};
+	constexpr auto onGetParam = [](stk500v2::Param param, uint8_t &result) {
+		using stk500v2::Param;
+
+		switch (param) {
+		case Param::HW_VER:
+			result = 1;
+			break;
+		case Param::SW_MAJOR:
+			result = 2;
+			break;
+		case Param::SW_MINOR:
+			result = 10;
+			break;
+		case Param::SCK_DURATION:
+			result = 2;
+			break;
+		case Param::VADJUST:
+			result = 25;
+			break;
+		case Param::VTARGET:
+			result = 49;
+			break;
+		case Param::OSC_PSCALE:
+			result = 2;
+			break;
+		case Param::OSC_CMATCH:
+			result = 127;
+			break;
+		case Param::TOPCARD_DETECT:
+			result = 0xFF;
+			break;
+		default:
+			return false;
+		}
+
+		return true;
+	};
+
+	constexpr auto callbacks = stk500v2::Callbacks<onSignOn, onSetParam, onGetParam>();
+
+	stk500v2::Stk500v2<uart_interface, TIMEOUT, callbacks> stk500;
+	stk500.init();
+
+	while (stk500.callback())
+		;
+}
+
 int main()
 {
+	/*interfaceTest();
+	return 0;*/
+
 	serial.init();

 	Message msg;
@@ -586,8 +642,6 @@ int main()
 		}

 		if (timeout == 0) {
-			timeout = TIMEOUT;
-
 			if (chipEraseFlag == ChipEraseState::PERFORM) {
 				performChipErase();
 				chipEraseFlag = ChipEraseState::NONE;
@@ -595,6 +649,8 @@ int main()
 				performChipErase(finishEraseAddress);
 				chipEraseFlag = ChipEraseState::NONE;
 			}
+
+			asm volatile("jmp 0x0000");
 		}
 	}

@@ -605,7 +661,7 @@ void startup() __attribute__((naked, section(".vectors")));
 void startup()
 {
 	asm volatile("clr __zero_reg__");
-	// SP = RAMEND;
+	SP = RAMEND;
 	SREG = 0;
 	asm volatile("jmp main");
 }
--- a/stk500v2/stk500v2.cppproj
+++ b/stk500v2/stk500v2.cppproj
@@ -15,7 +15,7 @@
    <AssemblyName>stk500v2</AssemblyName>
    <Name>stk500v2</Name>
    <RootNamespace>stk500v2</RootNamespace>
-    <ToolchainFlavour>avr-g++-9.1.0</ToolchainFlavour>
+    <ToolchainFlavour>avr-g++-10.0.1</ToolchainFlavour>
    <KeepTimersRunning>true</KeepTimersRunning>
    <OverrideVtor>false</OverrideVtor>
    <CacheFlash>true</CacheFlash>
@@ -95,147 +95,136 @@
    </com_atmel_avrdbg_tool_simulator>
    <AAFDebugger>
      <AAFDebugFiles>
-        <DebugFile>
-          <path>\Debug\stk500v2.lss</path>
-          <AAFSetting>
-            <Label>Lss Files</Label>
-            <Extention>.lss</Extention>
-            <Regex>^\s*(?&lt;address&gt;[a-f0-9]*):\s*.*$</Regex>
-            <DebugEnabled>true</DebugEnabled>
-            <RegexGroups>address</RegexGroups>
-            <DebuggerExpression>$pc</DebuggerExpression>
-          </AAFSetting>
-        </DebugFile>
      </AAFDebugFiles>
    </AAFDebugger>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
    <ToolchainSettings>
      <AvrGccCpp>
-  <avrgcc.common.Device>-mmcu=atmega328p</avrgcc.common.Device>
-  <avrgcc.common.outputfiles.hex>True</avrgcc.common.outputfiles.hex>
-  <avrgcc.common.outputfiles.lss>True</avrgcc.common.outputfiles.lss>
-  <avrgcc.common.outputfiles.eep>True</avrgcc.common.outputfiles.eep>
-  <avrgcc.common.outputfiles.srec>True</avrgcc.common.outputfiles.srec>
-  <avrgcc.common.outputfiles.usersignatures>False</avrgcc.common.outputfiles.usersignatures>
-  <avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>
-  <avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>
-  <avrgcc.compiler.symbols.DefSymbols>
-    <ListValues>
-      <Value>NDEBUG</Value>
-    </ListValues>
-  </avrgcc.compiler.symbols.DefSymbols>
-  <avrgcc.compiler.directories.IncludePaths>
-    <ListValues>
-      <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.346\include</Value>
-    </ListValues>
-  </avrgcc.compiler.directories.IncludePaths>
-  <avrgcc.compiler.optimization.level>Optimize for size (-Os)</avrgcc.compiler.optimization.level>
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  <ItemGroup>
--- a/stk500v2/stk500v2.hpp
+++ b/stk500v2/stk500v2.hpp
@@ -0,0 +1,344 @@
+#pragma once
+
+#include <math.h>
+#include <stddef.h>
+#include <stdint.h>
+
+namespace stk500v2 {
+
+enum class Msg : uint8_t {
+	START = 0x1B, // ASCII ESC
+	TOKEN = 0x0E,
+};
+
+inline constexpr bool operator==(const Msg &msg, const uint8_t &num)
+{
+	return static_cast<uint8_t>(msg) == num;
+}
+
+enum class Cmd : uint8_t {
+	SIGN_ON = 0x01,
+	SET_PARAMETER = 0x02,
+	GET_PARAMETER = 0x03,
+	SET_DEVICE_PARAMETERS = 0x04,
+	OSCCAL = 0x05,
+	LOAD_ADDRESS = 0x06,
+	FIRMWARE_UPGRADE = 0x07,
+};
+
+inline constexpr bool operator==(const Cmd &cmd, const uint8_t &num)
+{
+	return static_cast<uint8_t>(cmd) == num;
+}
+
+enum class IspCmd : uint8_t {
+	ENTER_PROGMODE = 0x10,
+	LEAVE_PROGMODE = 0x11,
+	CHIP_ERASE = 0x12,
+	PROGRAM_FLASH = 0x13,
+	READ_FLASH = 0x14,
+	PROGRAM_EEPROM = 0x15,
+	READ_EEPROM = 0x16,
+	PROGRAM_FUSE = 0x17,
+	READ_FUSE = 0x18,
+	PROGRAM_LOCK = 0x19,
+	READ_LOCK = 0x1A,
+	READ_SIGNATURE = 0x1B,
+	READ_OSCCAL = 0x1C,
+
+	SPI_MULTI = 0x1D,
+};
+
+enum class PpCmd : uint8_t {
+	ENTER_PROGMODE = 0x20,
+	LEAVE_PROGMODE = 0x21,
+	CHIP_ERASE = 0x22,
+	PROGRAM_FLASH = 0x23,
+	READ_FLASH = 0x24,
+	PROGRAM_EEPROM = 0x25,
+	READ_EEPROM = 0x26,
+	PROGRAM_FUSE = 0x27,
+	READ_FUSE = 0x28,
+	PROGRAM_LOCK = 0x29,
+	READ_LOCK = 0x2A,
+	READ_SIGNATURE = 0x2B,
+	READ_OSCCAL = 0x2C,
+
+	SET_CONTROL_STACK = 0x2D,
+};
+
+enum class HvspCmd : uint8_t {
+	ENTER_PROGMODE = 0x30,
+	LEAVE_PROGMODE = 0x31,
+	CHIP_ERASE = 0x32,
+	PROGRAM_FLASH = 0x33,
+	READ_FLASH = 0x34,
+	PROGRAM_EEPROM = 0x35,
+	READ_EEPROM = 0x36,
+	PROGRAM_FUSE = 0x37,
+	READ_FUSE = 0x38,
+	PROGRAM_LOCK = 0x39,
+	READ_LOCK = 0x3A,
+	READ_SIGNATURE = 0x3B,
+	READ_OSCCAL = 0x3C,
+};
+
+enum class Status : uint8_t {
+	// Success
+	CMD_OK = 0x00,
+
+	// Warnings
+	CMD_TOUT = 0x80,
+	RDY_BSY_TOUT = 0x81,
+	SET_PARAM_MISSING = 0x82,
+
+	// Errors
+	CMD_FAILED = 0xC0,
+	CKSUM_ERROR = 0xC1,
+	CMD_UNKNOWN = 0xC9,
+};
+
+enum class Param : uint8_t {
+	BUILD_NUMBER_LOW = 0x80,
+	BUILD_NUMBER_HIGH = 0x81,
+	HW_VER = 0x90,
+	SW_MAJOR = 0x91,
+	SW_MINOR = 0x92,
+	VTARGET = 0x94,
+	VADJUST = 0x95,
+	OSC_PSCALE = 0x96,
+	OSC_CMATCH = 0x97,
+	SCK_DURATION = 0x98,
+	TOPCARD_DETECT = 0x9A,
+	STATUS = 0x9C,
+	DATA = 0x9D,
+	RESET_POLARITY = 0x9E,
+	CONTROLLER_INIT = 0x9F,
+};
+
+enum class Answer : uint8_t {
+	CKSUM_ERROR = 0xB0,
+};
+
+template <size_t Size>
+struct Message {
+	uint8_t start;
+	uint8_t number;
+	uint16_t size;
+	uint8_t token;
+	uint8_t body[Size];
+	uint8_t checksum;
+};
+
+template <auto SignOnFn, auto SetParamFn, auto GetParamFn>
+struct Callbacks {
+	static constexpr auto onSignOn = SignOnFn;
+	static constexpr auto onSetParam = SetParamFn;
+	static constexpr auto onGetParam = GetParamFn;
+};
+
+template <class Uart, uint16_t Timeout, auto CallbackFns>
+class Stk500v2 {
+  public:
+	inline void init()
+	{
+		m_serial.init();
+	}
+
+	inline bool callback()
+	{
+		if (receiveMessage()) {
+			handleMessage();
+		}
+
+		if (m_timeout)
+			return true;
+
+		return false;
+	}
+
+  private:
+	static constexpr auto MSG_BUFFER_SIZE = 275;
+	using msg_t = Message<MSG_BUFFER_SIZE>;
+
+	msg_t m_msg;
+	Uart m_serial;
+	uint16_t m_timeout = Timeout;
+
+	inline bool receiveByte(uint8_t &data)
+	{
+		constexpr auto MICROSECOND = 1000.0 * 1000;
+		constexpr auto SYMBOL_SIZE = 9;
+		constexpr auto BYTE_DELAY_US = (SYMBOL_SIZE * MICROSECOND) / Uart::BAUD_RATE;
+		constexpr auto NUM_MS_DELAY_STEPS = static_cast<uint16_t>(round(1000 / BYTE_DELAY_US));
+		uint16_t msDelay = NUM_MS_DELAY_STEPS;
+
+		while (m_timeout) {
+			if (m_serial.rxByte(data)) {
+				m_timeout = Timeout;
+				return true;
+			}
+
+			_delay_us(BYTE_DELAY_US);
+
+			if (--msDelay == 0) {
+				msDelay = NUM_MS_DELAY_STEPS;
+				--m_timeout;
+			}
+		}
+
+		return false;
+	}
+
+	inline uint8_t calcChecksum() const
+	{
+		uint8_t checksum = static_cast<uint8_t>(m_msg.start);
+
+		for (uint16_t i = 1; i < 5 + m_msg.size; ++i) {
+			checksum ^= *(reinterpret_cast<const uint8_t *>(&m_msg) + i);
+		}
+
+		return checksum;
+	}
+
+	inline bool receiveMessage()
+	{
+		constexpr auto CHECK_MESSAGE_FORMAT = true;
+		constexpr auto CHECK_MESSAGE_SIZE = true;
+		constexpr auto CHECK_MESSAGE_CHECKSUM = true;
+
+		if (!receiveByte(m_msg.start)) {
+			return false;
+		}
+		if constexpr (CHECK_MESSAGE_FORMAT) {
+			if (m_msg.start != Msg::START)
+				return false;
+		}
+
+		if (!receiveByte(m_msg.number))
+			return false;
+
+		if (!receiveByte(*(reinterpret_cast<uint8_t *>(&m_msg.size) + 1)))
+			return false;
+		if (!receiveByte(*reinterpret_cast<uint8_t *>(&m_msg.size)))
+			return false;
+
+		if constexpr (CHECK_MESSAGE_SIZE) {
+			if (m_msg.size > sizeof(m_msg.body))
+				return false;
+		}
+
+		if (!receiveByte(m_msg.token))
+			return false;
+
+		if constexpr (CHECK_MESSAGE_FORMAT) {
+			if (m_msg.token != Msg::TOKEN)
+				return false;
+		}
+
+		for (uint16_t i = 0; i < m_msg.size; ++i) {
+			if (!receiveByte(m_msg.body[i]))
+				return false;
+		}
+
+		if (!receiveByte(m_msg.checksum))
+			return false;
+
+		if constexpr (CHECK_MESSAGE_CHECKSUM) {
+			if (m_msg.checksum != calcChecksum())
+				return false;
+		}
+
+		return true;
+	}
+
+	inline void transmitMessage() const
+	{
+		m_serial.txByte(m_msg.start);
+		m_serial.txByte(m_msg.number);
+		m_serial.txByte(m_msg.size >> 8);
+		m_serial.txByte(m_msg.size & 0xFF);
+		m_serial.txByte(m_msg.token);
+		for (uint16_t i = 0; i < m_msg.size; ++i)
+			m_serial.txByte(m_msg.body[i]);
+		m_serial.txByte(m_msg.checksum);
+	}
+
+	inline void handleMessage()
+	{
+		constexpr auto CHECK_MESSAGE_LENGTH = true;
+
+		switch (m_msg.body[0]) {
+		case static_cast<uint8_t>(Cmd::SIGN_ON): {
+			if constexpr (CHECK_MESSAGE_LENGTH) {
+				if (m_msg.size != 1)
+					break;
+			}
+			CallbackFns.onSignOn();
+			sendReply<static_cast<uint8_t>(Cmd::SIGN_ON)>();
+			break;
+		}
+		case static_cast<uint8_t>(Cmd::SET_PARAMETER): {
+			if constexpr (CHECK_MESSAGE_LENGTH) {
+				if (m_msg.size != 3)
+					break;
+			}
+			CallbackFns.onSetParam();
+			sendReply<static_cast<uint8_t>(Cmd::SET_PARAMETER)>();
+			break;
+		}
+		case static_cast<uint8_t>(Cmd::GET_PARAMETER): {
+			if constexpr (CHECK_MESSAGE_LENGTH) {
+				if (m_msg.size != 2)
+					break;
+			}
+			const auto errorOccurred = CallbackFns.onGetParam(static_cast<Param>(m_msg.body[1]), m_msg.body[2]);
+			sendReply<static_cast<uint8_t>(Cmd::GET_PARAMETER)>(errorOccurred);
+			break;
+		}
+		case static_cast<uint8_t>(Cmd::SET_DEVICE_PARAMETERS):
+			break;
+		case static_cast<uint8_t>(Cmd::OSCCAL):
+			break;
+		case static_cast<uint8_t>(Cmd::LOAD_ADDRESS):
+			break;
+		case static_cast<uint8_t>(Cmd::FIRMWARE_UPGRADE):
+			break;
+		}
+	}
+
+	template <uint8_t Command>
+	inline void sendReply(bool errorOccurred = false)
+	{
+		if constexpr (Command == Cmd::SIGN_ON) {
+			m_msg.size = 3 + 8;
+			m_msg.body[1] = static_cast<uint8_t>(Status::CMD_OK);
+			m_msg.body[2] = 8;
+			m_msg.body[3] = 'S';
+			m_msg.body[4] = 'T';
+			m_msg.body[5] = 'K';
+			m_msg.body[6] = '5';
+			m_msg.body[7] = '0';
+			m_msg.body[8] = '0';
+			m_msg.body[9] = '_';
+			m_msg.body[10] = '2';
+		} else if (Command == Cmd::SET_PARAMETER) {
+			m_msg.size = 2;
+			m_msg.body[1] = static_cast<uint8_t>(Status::CMD_OK);
+		} else if (Command == Cmd::GET_PARAMETER) {
+			if (!errorOccurred) {
+				m_msg.size = 3;
+				m_msg.body[1] = static_cast<uint8_t>(Status::CMD_OK);
+			} else {
+				m_msg.size = 2;
+				m_msg.body[1] = static_cast<uint8_t>(Status::CMD_FAILED);
+			}
+		}
+
+		m_msg.checksum = calcChecksum();
+
+		transmitMessage();
+	}
+};
+
+} // namespace stk500v2
--- a/stk500v2/uart
+++ b/stk500v2/uart
--- a/tsb/tsb.cppproj
+++ b/tsb/tsb.cppproj
@@ -28,9 +28,10 @@
    <ResetRule>0</ResetRule>
    <eraseonlaunchrule>0</eraseonlaunchrule>
    <EraseKey />
-    <avrtool>com.atmel.avrdbg.tool.atmelice</avrtool>
+    <avrtool>
+    </avrtool>
    <avrtoolserialnumber>J41800099437</avrtoolserialnumber>
-    <avrdeviceexpectedsignature>0x1E950F</avrdeviceexpectedsignature>
+    <avrdeviceexpectedsignature>0x1E9705</avrdeviceexpectedsignature>
    <com_atmel_avrdbg_tool_stk500>
      <ToolOptions>
        <InterfaceProperties>
@@ -93,122 +94,128 @@
      </ToolNumber>
      <ToolName xmlns="">Simulator</ToolName>
    </com_atmel_avrdbg_tool_simulator>
+    <AAFDebugger>
+      <AAFDebugFiles>
+      </AAFDebugFiles>
+    </AAFDebugger>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
    <ToolchainSettings>
      <AvrGccCpp>
-        <avrgcc.common.Device>-mmcu=atmega328p</avrgcc.common.Device>
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-        <avrgcc.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcc.compiler.optimization.AllocateBytesNeededForEnum>
-        <avrgcc.compiler.warnings.AllWarnings>True</avrgcc.compiler.warnings.AllWarnings>
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-          </ListValues>
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-      </AvrGccCpp>
+  <avrgcc.common.Device>-mmcu=atmega1284p</avrgcc.common.Device>
+  <avrgcc.common.optimization.RelaxBranches>True</avrgcc.common.optimization.RelaxBranches>
+  <avrgcc.common.outputfiles.hex>True</avrgcc.common.outputfiles.hex>
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+  <avrgcc.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcc.compiler.optimization.AllocateBytesNeededForEnum>
+  <avrgcc.compiler.warnings.AllWarnings>True</avrgcc.compiler.warnings.AllWarnings>
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+  <avrgcc.compiler.warnings.Pedantic>True</avrgcc.compiler.warnings.Pedantic>
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+  <avrgcccpp.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcccpp.compiler.general.ChangeDefaultCharTypeUnsigned>
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+  <avrgcccpp.compiler.warnings.AllWarnings>True</avrgcccpp.compiler.warnings.AllWarnings>
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+  <avrgcccpp.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -Wextra -std=c++17</avrgcccpp.compiler.miscellaneous.OtherFlags>
+  <avrgcccpp.linker.libraries.Libraries>
+    <ListValues>
+      <Value>libm</Value>
+    </ListValues>
+  </avrgcccpp.linker.libraries.Libraries>
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+      <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.346\include</Value>
+    </ListValues>
+  </avrgcccpp.assembler.general.IncludePaths>
+</AvrGccCpp>
    </ToolchainSettings>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
    <ToolchainSettings>
      <AvrGccCpp>
-        <avrgcc.common.Device>-mmcu=atmega328p</avrgcc.common.Device>
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-        <avrgcccpp.assembler.debugging.DebugLevel>Default (-Wa,-g)</avrgcccpp.assembler.debugging.DebugLevel>
-      </AvrGccCpp>
+  <avrgcc.common.Device>-mmcu=atmega1284p</avrgcc.common.Device>
+  <avrgcc.common.optimization.RelaxBranches>True</avrgcc.common.optimization.RelaxBranches>
+  <avrgcc.common.outputfiles.hex>True</avrgcc.common.outputfiles.hex>
+  <avrgcc.common.outputfiles.lss>True</avrgcc.common.outputfiles.lss>
+  <avrgcc.common.outputfiles.eep>True</avrgcc.common.outputfiles.eep>
+  <avrgcc.common.outputfiles.srec>True</avrgcc.common.outputfiles.srec>
+  <avrgcc.common.outputfiles.usersignatures>False</avrgcc.common.outputfiles.usersignatures>
+  <avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>
+  <avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>
+  <avrgcc.compiler.symbols.DefSymbols>
+    <ListValues>
+      <Value>DEBUG</Value>
+    </ListValues>
+  </avrgcc.compiler.symbols.DefSymbols>
+  <avrgcc.compiler.directories.IncludePaths>
+    <ListValues>
+      <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.346\include</Value>
+    </ListValues>
+  </avrgcc.compiler.directories.IncludePaths>
+  <avrgcc.compiler.optimization.level>Optimize (-O1)</avrgcc.compiler.optimization.level>
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+  <avrgcc.compiler.optimization.DebugLevel>Maximum (-g3)</avrgcc.compiler.optimization.DebugLevel>
+  <avrgcc.compiler.warnings.AllWarnings>True</avrgcc.compiler.warnings.AllWarnings>
+  <avrgcc.compiler.warnings.ExtraWarnings>True</avrgcc.compiler.warnings.ExtraWarnings>
+  <avrgcc.compiler.warnings.Pedantic>True</avrgcc.compiler.warnings.Pedantic>
+  <avrgcc.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -std=c11</avrgcc.compiler.miscellaneous.OtherFlags>
+  <avrgcccpp.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcccpp.compiler.general.ChangeDefaultCharTypeUnsigned>
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+  <avrgcccpp.compiler.symbols.DefSymbols>
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+    </ListValues>
+  </avrgcccpp.compiler.directories.IncludePaths>
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+  <avrgcccpp.compiler.optimization.DebugLevel>Maximum (-g3)</avrgcccpp.compiler.optimization.DebugLevel>
+  <avrgcccpp.compiler.warnings.AllWarnings>True</avrgcccpp.compiler.warnings.AllWarnings>
+  <avrgcccpp.compiler.warnings.Pedantic>True</avrgcccpp.compiler.warnings.Pedantic>
+  <avrgcccpp.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -Wextra -std=c++17</avrgcccpp.compiler.miscellaneous.OtherFlags>
+  <avrgcccpp.linker.libraries.Libraries>
+    <ListValues>
+      <Value>libm</Value>
+    </ListValues>
+  </avrgcccpp.linker.libraries.Libraries>
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+      <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.346\include</Value>
+    </ListValues>
+  </avrgcccpp.assembler.general.IncludePaths>
+  <avrgcccpp.assembler.debugging.DebugLevel>Default (-Wa,-g)</avrgcccpp.assembler.debugging.DebugLevel>
+</AvrGccCpp>
    </ToolchainSettings>
  </PropertyGroup>
  <ItemGroup>
--- a/tsb/uart
+++ b/tsb/uart
Author	SHA1	Message	Date
BlackMark	db37f4b410	Change C++ standard to C++20 and toolchain to 10.0.1	2026-08-05 22:05:30 +02:00
BlackMark	820a2d1aba	Update uart submodule to expose baud rate	2026-08-05 22:03:22 +02:00
BlackMark	9b54969e02	Add interface test for stk500v2 library callbacks	2026-08-05 21:54:32 +02:00
BlackMark	be1a88f4ab	Add unfinished extraction of stk500v2 protocol into library	2026-08-05 21:46:39 +02:00
BlackMark	14ac91c815	Update uart submodule	2020-04-13 17:20:31 +02:00
BlackMark	621d34cc18	Update uart submodule	2020-04-13 13:08:34 +02:00
BlackMark	0a65626975	Update uart submodule to fix 115200 baud with 16 MHz	2020-04-13 00:22:02 +02:00
BlackMark	9390f7830b	Add small blink example as bootloader payload test	2020-04-12 18:45:33 +02:00
BlackMark	b21673e326	Uncomment setting stack pointer to allow jumping into bootloader	2020-04-12 18:43:53 +02:00
BlackMark	3afda0ebf9	Replace function call to user code with jump	2020-04-12 16:05:16 +02:00
BlackMark	807b1f336f	Finish bootloader by adding jump to user code	2020-04-12 15:32:31 +02:00