implemented reset detection

10 years ago · 03c2f0afd3
6 changed files with 263 additions and 108 deletions
--- a/LowLevel.h
+++ b/LowLevel.h
@ -0,0 +1,93 @@
+#ifndef _LowLevel_h
+#define _LowLevel_h
+
+#include <inttypes.h>
+
+#if ARDUINO >= 100
+#include "Arduino.h"       // for delayMicroseconds, digitalPinToBitMask, etc
+#else
+#include "WProgram.h"      // for delayMicroseconds
+#include "pins_arduino.h"  // for digitalPinToBitMask, etc
+#endif
+
+#if defined(__AVR__)
+#define PIN_TO_BASEREG(pin)             (portInputRegister(digitalPinToPort(pin)))
+#define PIN_TO_BITMASK(pin)             (digitalPinToBitMask(pin))
+#define IO_REG_TYPE uint8_t
+#define IO_REG_ASM asm("r30")
+#define DIRECT_READ(base, mask)         (((*(base)) & (mask)) ? 1 : 0)
+#define DIRECT_MODE_INPUT(base, mask)   ((*((base)+1)) &= ~(mask))
+#define DIRECT_MODE_OUTPUT(base, mask)  ((*((base)+1)) |= (mask))
+#define DIRECT_WRITE_LOW(base, mask)    ((*((base)+2)) &= ~(mask))
+#define DIRECT_WRITE_HIGH(base, mask)   ((*((base)+2)) |= (mask))
+
+#elif defined(__MK20DX128__) || defined(__MK20DX256__)
+#define PIN_TO_BASEREG(pin)             (portOutputRegister(pin))
+#define PIN_TO_BITMASK(pin)             (1)
+#define IO_REG_TYPE uint8_t
+#define IO_REG_ASM
+#define DIRECT_READ(base, mask)         (*((base)+512))
+#define DIRECT_MODE_INPUT(base, mask)   (*((base)+640) = 0)
+#define DIRECT_MODE_OUTPUT(base, mask)  (*((base)+640) = 1)
+#define DIRECT_WRITE_LOW(base, mask)    (*((base)+256) = 1)
+#define DIRECT_WRITE_HIGH(base, mask)   (*((base)+128) = 1)
+
+#elif defined(__SAM3X8E__)
+// Arduino 1.5.1 may have a bug in delayMicroseconds() on Arduino Due.
+// http://arduino.cc/forum/index.php/topic,141030.msg1076268.html#msg1076268
+// If you have trouble with OneWire on Arduino Due, please check the
+// status of delayMicroseconds() before reporting a bug in OneWire!
+#define PIN_TO_BASEREG(pin)             (&(digitalPinToPort(pin)->PIO_PER))
+#define PIN_TO_BITMASK(pin)             (digitalPinToBitMask(pin))
+#define IO_REG_TYPE uint32_t
+#define IO_REG_ASM
+#define DIRECT_READ(base, mask)         (((*((base)+15)) & (mask)) ? 1 : 0)
+#define DIRECT_MODE_INPUT(base, mask)   ((*((base)+5)) = (mask))
+#define DIRECT_MODE_OUTPUT(base, mask)  ((*((base)+4)) = (mask))
+#define DIRECT_WRITE_LOW(base, mask)    ((*((base)+13)) = (mask))
+#define DIRECT_WRITE_HIGH(base, mask)   ((*((base)+12)) = (mask))
+#ifndef PROGMEM
+#define PROGMEM
+#endif
+#ifndef pgm_read_byte
+#define pgm_read_byte(addr) (*(const uint8_t *)(addr))
+#endif
+
+#elif defined(__PIC32MX__)
+#define PIN_TO_BASEREG(pin)             (portModeRegister(digitalPinToPort(pin)))
+#define PIN_TO_BITMASK(pin)             (digitalPinToBitMask(pin))
+#define IO_REG_TYPE uint32_t
+#define IO_REG_ASM
+#define DIRECT_READ(base, mask)         (((*(base+4)) & (mask)) ? 1 : 0)  //PORTX + 0x10
+#define DIRECT_MODE_INPUT(base, mask)   ((*(base+2)) = (mask))            //TRISXSET + 0x08
+#define DIRECT_MODE_OUTPUT(base, mask)  ((*(base+1)) = (mask))            //TRISXCLR + 0x04
+#define DIRECT_WRITE_LOW(base, mask)    ((*(base+8+1)) = (mask))          //LATXCLR  + 0x24
+#define DIRECT_WRITE_HIGH(base, mask)   ((*(base+8+2)) = (mask))          //LATXSET + 0x28
+
+#else
+#error "Please define I/O register types here"
+#endif
+
+class Pin
+{
+private:
+	IO_REG_TYPE mask;
+	volatile IO_REG_TYPE *reg;
+
+public:
+	inline Pin(uint8_t pin)
+	{
+		mask = PIN_TO_BITMASK(pin);
+		reg = PIN_TO_BASEREG(pin);
+	}
+
+	inline void inputMode() { DIRECT_MODE_INPUT(reg, mask); }
+	inline void outputMode() { DIRECT_MODE_OUTPUT(reg, mask); }
+
+	inline bool read() { return DIRECT_READ(reg, mask); }
+	inline void writeLow() { DIRECT_WRITE_LOW(reg, mask); }
+	inline void writeHigh() { DIRECT_WRITE_HIGH(reg, mask); }
+	inline void write(bool value) { if (value) writeHigh(); else writeLow(); }
+};
+
+#endif
--- a/OneWireIO.ino
+++ b/OneWireIO.ino
@ -1,18 +1,27 @@
 #include "Arduino.h"
+#include "LowLevel.h"
 #include "SerialChannel.h"

 #define LEDPin    13
-#define OWPin     2
+#define OWPin 2
 #define InterruptNumber 0 // Must correspond to the OWPin to correctly detect state changes. On Arduino Uno, interrupt 0 is for digital pin 2

+#define ResetMinDuration 360
+#define ResetMaxDuration 900
+
 SerialChannel debug("debug");

+Pin owPin(OWPin);
+Pin ledPin(LEDPin);
+
+unsigned long resetStart = (unsigned long)-1;
+
 void setup()
 {
-    pinMode(LEDPin, OUTPUT); 
-    pinMode(OWPin, INPUT);
+	ledPin.outputMode();
+	owPin.inputMode();

-    digitalWrite(LEDPin, LOW);
+	ledPin.writeLow();

    attachInterrupt(InterruptNumber,onewireInterrupt,CHANGE);
    
@ -23,11 +32,28 @@ void loop()
 {
    cli();//disable interrupts
    
-	sei();//enable interrupts
+    sei();//enable interrupts
    
 }

 void onewireInterrupt(void)
 {
-    digitalWrite(LEDPin, digitalRead(OWPin));
+	bool state = owPin.read();
+	unsigned long now = micros();
+
+	//ledPin.write(state);
+
+	if (!state)
+		resetStart = now;
+
+	if (state)
+	{
+		unsigned long resetDuration = now - resetStart;
+		if (resetStart != (unsigned long)-1 && resetDuration >= ResetMinDuration && resetDuration <= ResetMaxDuration)
+		{
+			debug.write("reset");
+			ledPin.writeHigh();
+		}
+		resetStart = (unsigned long)-1;
+	}
 }
--- a/OneWireIO.sln
+++ b/OneWireIO.sln
@ -0,0 +1,44 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 2013
+VisualStudioVersion = 12.0.31101.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "OneWireIO", "OneWireIO.vcxproj", "{3B500971-1570-460F-81C3-22AC3B7764B9}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SerialMonitor", "SerialMonitor\SerialMonitor\SerialMonitor.csproj", "{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Debug|Mixed Platforms = Debug|Mixed Platforms
+		Debug|Win32 = Debug|Win32
+		Release|Any CPU = Release|Any CPU
+		Release|Mixed Platforms = Release|Mixed Platforms
+		Release|Win32 = Release|Win32
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{3B500971-1570-460F-81C3-22AC3B7764B9}.Debug|Any CPU.ActiveCfg = Debug|Win32
+		{3B500971-1570-460F-81C3-22AC3B7764B9}.Debug|Mixed Platforms.ActiveCfg = Debug|Win32
+		{3B500971-1570-460F-81C3-22AC3B7764B9}.Debug|Mixed Platforms.Build.0 = Debug|Win32
+		{3B500971-1570-460F-81C3-22AC3B7764B9}.Debug|Win32.ActiveCfg = Debug|Win32
+		{3B500971-1570-460F-81C3-22AC3B7764B9}.Debug|Win32.Build.0 = Debug|Win32
+		{3B500971-1570-460F-81C3-22AC3B7764B9}.Release|Any CPU.ActiveCfg = Release|Win32
+		{3B500971-1570-460F-81C3-22AC3B7764B9}.Release|Mixed Platforms.ActiveCfg = Release|Win32
+		{3B500971-1570-460F-81C3-22AC3B7764B9}.Release|Mixed Platforms.Build.0 = Release|Win32
+		{3B500971-1570-460F-81C3-22AC3B7764B9}.Release|Win32.ActiveCfg = Release|Win32
+		{3B500971-1570-460F-81C3-22AC3B7764B9}.Release|Win32.Build.0 = Release|Win32
+		{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Debug|Mixed Platforms.ActiveCfg = Debug|Any CPU
+		{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Debug|Mixed Platforms.Build.0 = Debug|Any CPU
+		{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Debug|Win32.ActiveCfg = Debug|Any CPU
+		{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Release|Any CPU.Build.0 = Release|Any CPU
+		{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Release|Mixed Platforms.ActiveCfg = Release|Any CPU
+		{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Release|Mixed Platforms.Build.0 = Release|Any CPU
+		{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Release|Win32.ActiveCfg = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal
--- a/OneWireIO.vcxproj
+++ b/OneWireIO.vcxproj
@ -0,0 +1,81 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{3B500971-1570-460F-81C3-22AC3B7764B9}</ProjectGuid>
+    <RootNamespace>OneWireIO</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup />
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalIncludeDirectories>D:\Outils\Arduino\hardware\arduino\avr\cores\arduino</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>_MBCS;%(PreprocessorDefinitions);ARDUINO=160;__AVR__</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <None Include="OneWireIO.ino" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="SerialChannel.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="LowLevel.h" />
+    <ClInclude Include="SerialChannel.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
--- a/OneWireIO.vcxproj.filters
+++ b/OneWireIO.vcxproj.filters
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <None Include="OneWireIO.ino" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="SerialChannel.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="SerialChannel.h" />
+    <ClInclude Include="LowLevel.h" />
+  </ItemGroup>
+</Project>
--- a/Oscilloscope.ino
+++ b/Oscilloscope.ino
@ -1,102 +0,0 @@
-#include "Arduino.h"
-#include "SerialChannel.h"
-
-#define LEDPin    13
-#define OWPin     2
-#define InterruptNumber 0 // Must correspond to the OWPin to correctly detect state changes. On Arduino Uno, interrupt 0 is for digital pin 2
-
-// how many samples we want to skip between two samples we keep (can be used to lower the sampling frequency)
-#define SkipSamples 0
-byte regularEncodedFrequency;
-
-const int BufferSize = 512;
-byte buffer1[BufferSize];
-byte buffer2[BufferSize];
-byte* backBuffer = buffer1;
-volatile short backBufferPos = 0;
-byte samplesSkipped = SkipSamples;
-unsigned long backBufferStartTime = micros();
-
-SerialChannel oscilloscope("oscilloscope");
-SerialChannel debug("debug");
-
-void setup()
-{
-    pinMode(LEDPin, OUTPUT); 
-    pinMode(OWPin, INPUT);
-
-    digitalWrite(LEDPin, LOW);
-
-    //attachInterrupt(InterruptNumber,onewireInterrupt,CHANGE);
-    
-    cli();//disable interrupts
-  
-    //set up continuous sampling of analog pin 0
-    //clear ADCSRA and ADCSRB registers
-    ADCSRA = 0;
-    ADCSRB = 0;
-    
-    ADMUX |= (1 << REFS0); //set reference voltage
-    ADMUX |= (1 << ADLAR); //left align the ADC value- so we can read highest 8 bits from ADCH register only
-    
-	int ADPS = (1 << ADPS2) | (0 << ADPS1) | (1 << ADPS0);
-    ADCSRA |= ADPS; //set ADC clock with 32 prescaler- 16mHz/32=500KHz ; 13 cycles for a conversion which means 38000 samples per second
-    ADCSRA |= (1 << ADATE); //enabble auto trigger
-    ADCSRA |= (1 << ADIE); //enable interrupts when measurement complete
-    ADCSRA |= (1 << ADEN); //enable ADC
-    ADCSRA |= (1 << ADSC); //start ADC measurements
-
-	regularEncodedFrequency = (byte)ADPS;
-	byte skipSamples = 0;
-	#if SkipSamples > 0
-	skipSamples = SkipSamples;
-	#endif
-	regularEncodedFrequency |= skipSamples << 3;
-    
-    sei();//enable interrupts
-    
-    Serial.begin(400000);
-}
-
-void loop()
-{
-    while(backBufferPos < BufferSize / 2) ;
-    cli();//disable interrupts
-    byte* currentBuffer = backBuffer;
-    short currentBufferSize = backBufferPos;
-    backBuffer = (backBuffer == buffer1 ? buffer2 : buffer1);
-    backBufferPos = 0;
-    sei();//enable interrupts
-    unsigned long currentBufferStartTime = backBufferStartTime;
-    backBufferStartTime = micros();
-    digitalWrite(LEDPin, LOW);
-    
-    //Serial.write(currentBuffer, currentBufferSize);
-    oscilloscope.beginWrite(currentBufferSize + 1, currentBufferStartTime);
-    oscilloscope.continueWrite(&regularEncodedFrequency, 1);
-    oscilloscope.continueWrite(currentBuffer, currentBufferSize);
-}
-
-ISR(ADC_vect) {//when new ADC value ready
-    byte sample = ADCH; //store 8 bit value from analog pin 0
-    
-    #if SkipSamples > 0
-    if(samplesSkipped++ < SkipSamples)
-        return;
-    samplesSkipped = 0;
-    #endif
-
-    backBuffer[backBufferPos++] = sample;
-    if(backBufferPos >= BufferSize)
-    {
-        // overflow of back buffer, we loose the current sample
-        digitalWrite(LEDPin, HIGH);
-        backBufferPos = BufferSize - 1;
-    }
-}
-
-void onewireInterrupt(void)
-{
-    //digitalWrite(LEDPin, digitalRead(OWPin));
-}
-