forked from youen/OneWireArduinoSlave
Youen Toupin
10 years ago
6 changed files with 263 additions and 108 deletions
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#ifndef _LowLevel_h |
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#define _LowLevel_h |
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#include <inttypes.h> |
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#if ARDUINO >= 100 |
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#include "Arduino.h" // for delayMicroseconds, digitalPinToBitMask, etc |
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#else |
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#include "WProgram.h" // for delayMicroseconds |
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#include "pins_arduino.h" // for digitalPinToBitMask, etc |
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#endif |
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#if defined(__AVR__) |
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#define PIN_TO_BASEREG(pin) (portInputRegister(digitalPinToPort(pin))) |
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#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin)) |
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#define IO_REG_TYPE uint8_t |
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#define IO_REG_ASM asm("r30") |
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#define DIRECT_READ(base, mask) (((*(base)) & (mask)) ? 1 : 0) |
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#define DIRECT_MODE_INPUT(base, mask) ((*((base)+1)) &= ~(mask)) |
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#define DIRECT_MODE_OUTPUT(base, mask) ((*((base)+1)) |= (mask)) |
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#define DIRECT_WRITE_LOW(base, mask) ((*((base)+2)) &= ~(mask)) |
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#define DIRECT_WRITE_HIGH(base, mask) ((*((base)+2)) |= (mask)) |
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#elif defined(__MK20DX128__) || defined(__MK20DX256__) |
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#define PIN_TO_BASEREG(pin) (portOutputRegister(pin)) |
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#define PIN_TO_BITMASK(pin) (1) |
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#define IO_REG_TYPE uint8_t |
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#define IO_REG_ASM |
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#define DIRECT_READ(base, mask) (*((base)+512)) |
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#define DIRECT_MODE_INPUT(base, mask) (*((base)+640) = 0) |
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#define DIRECT_MODE_OUTPUT(base, mask) (*((base)+640) = 1) |
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#define DIRECT_WRITE_LOW(base, mask) (*((base)+256) = 1) |
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#define DIRECT_WRITE_HIGH(base, mask) (*((base)+128) = 1) |
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#elif defined(__SAM3X8E__) |
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// Arduino 1.5.1 may have a bug in delayMicroseconds() on Arduino Due.
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// http://arduino.cc/forum/index.php/topic,141030.msg1076268.html#msg1076268
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// If you have trouble with OneWire on Arduino Due, please check the
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// status of delayMicroseconds() before reporting a bug in OneWire!
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#define PIN_TO_BASEREG(pin) (&(digitalPinToPort(pin)->PIO_PER)) |
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#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin)) |
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#define IO_REG_TYPE uint32_t |
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#define IO_REG_ASM |
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#define DIRECT_READ(base, mask) (((*((base)+15)) & (mask)) ? 1 : 0) |
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#define DIRECT_MODE_INPUT(base, mask) ((*((base)+5)) = (mask)) |
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#define DIRECT_MODE_OUTPUT(base, mask) ((*((base)+4)) = (mask)) |
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#define DIRECT_WRITE_LOW(base, mask) ((*((base)+13)) = (mask)) |
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#define DIRECT_WRITE_HIGH(base, mask) ((*((base)+12)) = (mask)) |
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#ifndef PROGMEM |
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#define PROGMEM |
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#endif |
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#ifndef pgm_read_byte |
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#define pgm_read_byte(addr) (*(const uint8_t *)(addr)) |
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#endif |
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#elif defined(__PIC32MX__) |
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#define PIN_TO_BASEREG(pin) (portModeRegister(digitalPinToPort(pin))) |
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#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin)) |
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#define IO_REG_TYPE uint32_t |
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#define IO_REG_ASM |
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#define DIRECT_READ(base, mask) (((*(base+4)) & (mask)) ? 1 : 0) //PORTX + 0x10
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#define DIRECT_MODE_INPUT(base, mask) ((*(base+2)) = (mask)) //TRISXSET + 0x08
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#define DIRECT_MODE_OUTPUT(base, mask) ((*(base+1)) = (mask)) //TRISXCLR + 0x04
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#define DIRECT_WRITE_LOW(base, mask) ((*(base+8+1)) = (mask)) //LATXCLR + 0x24
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#define DIRECT_WRITE_HIGH(base, mask) ((*(base+8+2)) = (mask)) //LATXSET + 0x28
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#else |
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#error "Please define I/O register types here" |
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#endif |
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class Pin |
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{ |
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private: |
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IO_REG_TYPE mask; |
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volatile IO_REG_TYPE *reg; |
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public: |
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inline Pin(uint8_t pin) |
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{ |
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mask = PIN_TO_BITMASK(pin); |
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reg = PIN_TO_BASEREG(pin); |
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} |
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inline void inputMode() { DIRECT_MODE_INPUT(reg, mask); } |
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inline void outputMode() { DIRECT_MODE_OUTPUT(reg, mask); } |
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inline bool read() { return DIRECT_READ(reg, mask); } |
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inline void writeLow() { DIRECT_WRITE_LOW(reg, mask); } |
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inline void writeHigh() { DIRECT_WRITE_HIGH(reg, mask); } |
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inline void write(bool value) { if (value) writeHigh(); else writeLow(); } |
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}; |
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#endif |
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@ -0,0 +1,44 @@ |
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Microsoft Visual Studio Solution File, Format Version 12.00 |
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# Visual Studio 2013 |
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VisualStudioVersion = 12.0.31101.0 |
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MinimumVisualStudioVersion = 10.0.40219.1 |
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Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "OneWireIO", "OneWireIO.vcxproj", "{3B500971-1570-460F-81C3-22AC3B7764B9}" |
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EndProject |
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SerialMonitor", "SerialMonitor\SerialMonitor\SerialMonitor.csproj", "{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}" |
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EndProject |
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Global |
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GlobalSection(SolutionConfigurationPlatforms) = preSolution |
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Debug|Any CPU = Debug|Any CPU |
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Debug|Mixed Platforms = Debug|Mixed Platforms |
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Debug|Win32 = Debug|Win32 |
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Release|Any CPU = Release|Any CPU |
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Release|Mixed Platforms = Release|Mixed Platforms |
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Release|Win32 = Release|Win32 |
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EndGlobalSection |
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GlobalSection(ProjectConfigurationPlatforms) = postSolution |
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{3B500971-1570-460F-81C3-22AC3B7764B9}.Debug|Any CPU.ActiveCfg = Debug|Win32 |
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{3B500971-1570-460F-81C3-22AC3B7764B9}.Debug|Mixed Platforms.ActiveCfg = Debug|Win32 |
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{3B500971-1570-460F-81C3-22AC3B7764B9}.Debug|Mixed Platforms.Build.0 = Debug|Win32 |
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{3B500971-1570-460F-81C3-22AC3B7764B9}.Debug|Win32.ActiveCfg = Debug|Win32 |
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{3B500971-1570-460F-81C3-22AC3B7764B9}.Debug|Win32.Build.0 = Debug|Win32 |
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{3B500971-1570-460F-81C3-22AC3B7764B9}.Release|Any CPU.ActiveCfg = Release|Win32 |
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{3B500971-1570-460F-81C3-22AC3B7764B9}.Release|Mixed Platforms.ActiveCfg = Release|Win32 |
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{3B500971-1570-460F-81C3-22AC3B7764B9}.Release|Mixed Platforms.Build.0 = Release|Win32 |
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{3B500971-1570-460F-81C3-22AC3B7764B9}.Release|Win32.ActiveCfg = Release|Win32 |
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{3B500971-1570-460F-81C3-22AC3B7764B9}.Release|Win32.Build.0 = Release|Win32 |
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{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU |
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{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Debug|Any CPU.Build.0 = Debug|Any CPU |
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{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Debug|Mixed Platforms.ActiveCfg = Debug|Any CPU |
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{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Debug|Mixed Platforms.Build.0 = Debug|Any CPU |
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{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Debug|Win32.ActiveCfg = Debug|Any CPU |
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{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Release|Any CPU.ActiveCfg = Release|Any CPU |
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{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Release|Any CPU.Build.0 = Release|Any CPU |
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{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Release|Mixed Platforms.ActiveCfg = Release|Any CPU |
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{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Release|Mixed Platforms.Build.0 = Release|Any CPU |
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{97704F53-6CA1-4155-9E8F-AEBFEEC20A8B}.Release|Win32.ActiveCfg = Release|Any CPU |
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EndGlobalSection |
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GlobalSection(SolutionProperties) = preSolution |
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HideSolutionNode = FALSE |
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EndGlobalSection |
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EndGlobal |
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@ -0,0 +1,81 @@ |
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<?xml version="1.0" encoding="utf-8"?> |
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<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> |
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<ItemGroup Label="ProjectConfigurations"> |
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<ProjectConfiguration Include="Debug|Win32"> |
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<Configuration>Debug</Configuration> |
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<Platform>Win32</Platform> |
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</ProjectConfiguration> |
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<ProjectConfiguration Include="Release|Win32"> |
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<Configuration>Release</Configuration> |
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<Platform>Win32</Platform> |
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</ProjectConfiguration> |
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</ItemGroup> |
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<PropertyGroup Label="Globals"> |
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<ProjectGuid>{3B500971-1570-460F-81C3-22AC3B7764B9}</ProjectGuid> |
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<RootNamespace>OneWireIO</RootNamespace> |
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</PropertyGroup> |
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" /> |
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration"> |
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<ConfigurationType>Application</ConfigurationType> |
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<UseDebugLibraries>true</UseDebugLibraries> |
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<PlatformToolset>v120</PlatformToolset> |
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<CharacterSet>MultiByte</CharacterSet> |
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</PropertyGroup> |
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration"> |
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<ConfigurationType>Application</ConfigurationType> |
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<UseDebugLibraries>false</UseDebugLibraries> |
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<PlatformToolset>v120</PlatformToolset> |
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<WholeProgramOptimization>true</WholeProgramOptimization> |
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<CharacterSet>MultiByte</CharacterSet> |
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</PropertyGroup> |
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" /> |
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<ImportGroup Label="ExtensionSettings"> |
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</ImportGroup> |
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<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'"> |
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" /> |
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</ImportGroup> |
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<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'"> |
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" /> |
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</ImportGroup> |
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<PropertyGroup Label="UserMacros" /> |
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<PropertyGroup /> |
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'"> |
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<ClCompile> |
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<WarningLevel>Level3</WarningLevel> |
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<Optimization>Disabled</Optimization> |
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<SDLCheck>true</SDLCheck> |
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<AdditionalIncludeDirectories>D:\Outils\Arduino\hardware\arduino\avr\cores\arduino</AdditionalIncludeDirectories> |
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<PreprocessorDefinitions>_MBCS;%(PreprocessorDefinitions);ARDUINO=160;__AVR__</PreprocessorDefinitions> |
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</ClCompile> |
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<Link> |
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<GenerateDebugInformation>true</GenerateDebugInformation> |
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</Link> |
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</ItemDefinitionGroup> |
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'"> |
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<ClCompile> |
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<WarningLevel>Level3</WarningLevel> |
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<Optimization>MaxSpeed</Optimization> |
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<FunctionLevelLinking>true</FunctionLevelLinking> |
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<IntrinsicFunctions>true</IntrinsicFunctions> |
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<SDLCheck>true</SDLCheck> |
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</ClCompile> |
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<Link> |
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<GenerateDebugInformation>true</GenerateDebugInformation> |
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<EnableCOMDATFolding>true</EnableCOMDATFolding> |
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<OptimizeReferences>true</OptimizeReferences> |
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</Link> |
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</ItemDefinitionGroup> |
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<ItemGroup> |
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<None Include="OneWireIO.ino" /> |
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</ItemGroup> |
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<ItemGroup> |
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<ClCompile Include="SerialChannel.cpp" /> |
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</ItemGroup> |
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<ItemGroup> |
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<ClInclude Include="LowLevel.h" /> |
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<ClInclude Include="SerialChannel.h" /> |
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</ItemGroup> |
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" /> |
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<ImportGroup Label="ExtensionTargets"> |
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</ImportGroup> |
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</Project> |
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@ -0,0 +1,13 @@ |
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<?xml version="1.0" encoding="utf-8"?> |
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<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> |
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<ItemGroup> |
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<None Include="OneWireIO.ino" /> |
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</ItemGroup> |
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<ItemGroup> |
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<ClCompile Include="SerialChannel.cpp" /> |
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</ItemGroup> |
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<ItemGroup> |
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<ClInclude Include="SerialChannel.h" /> |
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<ClInclude Include="LowLevel.h" /> |
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</ItemGroup> |
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</Project> |
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@ -1,102 +0,0 @@ |
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#include "Arduino.h" |
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#include "SerialChannel.h" |
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#define LEDPin 13 |
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#define OWPin 2 |
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#define InterruptNumber 0 // Must correspond to the OWPin to correctly detect state changes. On Arduino Uno, interrupt 0 is for digital pin 2
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// how many samples we want to skip between two samples we keep (can be used to lower the sampling frequency)
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#define SkipSamples 0 |
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byte regularEncodedFrequency; |
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const int BufferSize = 512; |
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byte buffer1[BufferSize]; |
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byte buffer2[BufferSize]; |
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byte* backBuffer = buffer1; |
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volatile short backBufferPos = 0; |
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byte samplesSkipped = SkipSamples; |
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unsigned long backBufferStartTime = micros(); |
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SerialChannel oscilloscope("oscilloscope"); |
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SerialChannel debug("debug"); |
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void setup() |
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{ |
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pinMode(LEDPin, OUTPUT);
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pinMode(OWPin, INPUT); |
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digitalWrite(LEDPin, LOW); |
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//attachInterrupt(InterruptNumber,onewireInterrupt,CHANGE);
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cli();//disable interrupts
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//set up continuous sampling of analog pin 0
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//clear ADCSRA and ADCSRB registers
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ADCSRA = 0; |
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ADCSRB = 0; |
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ADMUX |= (1 << REFS0); //set reference voltage
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ADMUX |= (1 << ADLAR); //left align the ADC value- so we can read highest 8 bits from ADCH register only
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int ADPS = (1 << ADPS2) | (0 << ADPS1) | (1 << ADPS0); |
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ADCSRA |= ADPS; //set ADC clock with 32 prescaler- 16mHz/32=500KHz ; 13 cycles for a conversion which means 38000 samples per second
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ADCSRA |= (1 << ADATE); //enabble auto trigger
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ADCSRA |= (1 << ADIE); //enable interrupts when measurement complete
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ADCSRA |= (1 << ADEN); //enable ADC
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ADCSRA |= (1 << ADSC); //start ADC measurements
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regularEncodedFrequency = (byte)ADPS; |
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byte skipSamples = 0; |
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#if SkipSamples > 0 |
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skipSamples = SkipSamples; |
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#endif |
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regularEncodedFrequency |= skipSamples << 3; |
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sei();//enable interrupts
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Serial.begin(400000); |
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} |
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void loop() |
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{ |
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while(backBufferPos < BufferSize / 2) ; |
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cli();//disable interrupts
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byte* currentBuffer = backBuffer; |
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short currentBufferSize = backBufferPos; |
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backBuffer = (backBuffer == buffer1 ? buffer2 : buffer1); |
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backBufferPos = 0; |
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sei();//enable interrupts
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unsigned long currentBufferStartTime = backBufferStartTime; |
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backBufferStartTime = micros(); |
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digitalWrite(LEDPin, LOW); |
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//Serial.write(currentBuffer, currentBufferSize);
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oscilloscope.beginWrite(currentBufferSize + 1, currentBufferStartTime); |
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oscilloscope.continueWrite(®ularEncodedFrequency, 1); |
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oscilloscope.continueWrite(currentBuffer, currentBufferSize); |
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} |
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ISR(ADC_vect) {//when new ADC value ready
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byte sample = ADCH; //store 8 bit value from analog pin 0
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#if SkipSamples > 0 |
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if(samplesSkipped++ < SkipSamples) |
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return; |
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samplesSkipped = 0; |
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#endif |
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backBuffer[backBufferPos++] = sample; |
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if(backBufferPos >= BufferSize) |
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{ |
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// overflow of back buffer, we loose the current sample
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digitalWrite(LEDPin, HIGH); |
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backBufferPos = BufferSize - 1; |
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} |
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} |
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void onewireInterrupt(void) |
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{ |
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//digitalWrite(LEDPin, digitalRead(OWPin));
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} |
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Reference in new issue