Compare commits
3 Commits
| Author | SHA1 | Date | |
|---|---|---|---|
| 3eb298053b | |||
| e82fb9971e | |||
| 4075cb4e63 |
3
.gitmodules
vendored
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3
.gitmodules
vendored
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@ -0,0 +1,3 @@
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|||||||
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[submodule "i2c/i2c"]
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path = i2c/i2c
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url = git@git.blackmark.me:avr/i2c.git
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2
LICENSE
2
LICENSE
@ -1,6 +1,6 @@
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|||||||
MIT License
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MIT License
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||||||
|
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||||||
Copyright (c) 2019 BlackMark
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Copyright (c) 2020 BlackMark
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||||||
Permission is hereby granted, free of charge, to any person obtaining a copy
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Permission is hereby granted, free of charge, to any person obtaining a copy
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||||||
of this software and associated documentation files (the "Software"), to deal
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of this software and associated documentation files (the "Software"), to deal
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||||||
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|||||||
126
hardware.hpp
126
hardware.hpp
@ -1,126 +0,0 @@
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#pragma once
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#include <stdint.h>
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#include <util/twi.h>
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namespace i2c {
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#if defined(__AVR_ATmega1284P__) || defined(__AVR_ATmega328P__)
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||||||
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template <uint32_t Clock>
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class Hardware {
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public:
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static void init()
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{
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constexpr auto clock = calcClock();
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static_assert(checkClock(clock), "Unable to set requested I2C frequency");
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TWSR = clock.prescaler;
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TWBR = clock.bitrate;
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}
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template <uint8_t Addr>
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static bool start(bool read)
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{
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TWCR = (1 << TWINT) | (1 << TWSTA) | (1 << TWEN);
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while (!(TWCR & (1 << TWINT)))
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;
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uint8_t status = TW_STATUS & 0xF8;
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if (status != TW_START && status != TW_REP_START)
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return false;
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TWDR = (Addr << 1) | read;
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TWCR = (1 << TWINT) | (1 << TWEN);
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while (!(TWCR & (1 << TWINT)))
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;
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status = TW_STATUS & 0xF8;
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if (status != TW_MT_SLA_ACK && status != TW_MR_SLA_ACK)
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return false;
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return true;
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}
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static bool write(uint8_t data)
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{
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TWDR = data;
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TWCR = (1 << TWINT) | (1 << TWEN);
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while (!(TWCR & (1 << TWINT)))
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;
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uint8_t status = TW_STATUS & 0xF8;
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if (status != TW_MT_DATA_ACK)
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return false;
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return true;
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}
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template <bool LastByte = false>
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static uint8_t read()
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{
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TWCR = (1 << TWINT) | (1 << TWEN) | (!LastByte << TWEA);
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while (!(TWCR & (1 << TWINT)))
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;
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return TWDR;
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}
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static void stop()
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{
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TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWSTO);
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while (TWCR & (1 << TWSTO))
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;
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}
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private:
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struct ClockCfg {
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uint8_t prescaler;
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uint8_t bitrate;
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};
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static constexpr auto calcScl(ClockCfg clk)
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{
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return F_CPU / (16 + 2 * clk.bitrate * clk.prescaler);
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}
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static constexpr auto checkClock(ClockCfg clk)
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{
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constexpr auto constexprAbs = [](auto val) {
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if (val < 0)
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return -val;
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return val;
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||||||
};
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constexpr auto CLOCK_EPSILON = 10;
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auto scl = calcScl(clk);
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if (constexprAbs(static_cast<int>(scl) - static_cast<int>(Clock)) < CLOCK_EPSILON)
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return true;
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return false;
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}
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static constexpr auto calcClock()
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{
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constexpr auto calcBitRate = [](uint8_t prescaler) { return (F_CPU / Clock - 16) / (2 * prescaler); };
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auto clk = ClockCfg{1, 0};
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for (uint8_t prescaler = 1; prescaler <= 64; prescaler *= 4) {
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clk.prescaler = prescaler;
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clk.bitrate = calcBitRate(prescaler);
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||||||
if (checkClock(clk))
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break;
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}
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return clk;
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}
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||||||
};
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||||||
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#endif
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} // namespace i2c
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22
i2c.atsln
Normal file
22
i2c.atsln
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@ -0,0 +1,22 @@
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|||||||
|
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||||||
|
Microsoft Visual Studio Solution File, Format Version 12.00
|
||||||
|
# Atmel Studio Solution File, Format Version 11.00
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||||||
|
VisualStudioVersion = 14.0.23107.0
|
||||||
|
MinimumVisualStudioVersion = 10.0.40219.1
|
||||||
|
Project("{E66E83B9-2572-4076-B26E-6BE79FF3018A}") = "i2c", "i2c\i2c.cppproj", "{DCE6C7E3-EE26-4D79-826B-08594B9AD897}"
|
||||||
|
EndProject
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||||||
|
Global
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||||||
|
GlobalSection(SolutionConfigurationPlatforms) = preSolution
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||||||
|
Debug|AVR = Debug|AVR
|
||||||
|
Release|AVR = Release|AVR
|
||||||
|
EndGlobalSection
|
||||||
|
GlobalSection(ProjectConfigurationPlatforms) = postSolution
|
||||||
|
{DCE6C7E3-EE26-4D79-826B-08594B9AD897}.Debug|AVR.ActiveCfg = Debug|AVR
|
||||||
|
{DCE6C7E3-EE26-4D79-826B-08594B9AD897}.Debug|AVR.Build.0 = Debug|AVR
|
||||||
|
{DCE6C7E3-EE26-4D79-826B-08594B9AD897}.Release|AVR.ActiveCfg = Release|AVR
|
||||||
|
{DCE6C7E3-EE26-4D79-826B-08594B9AD897}.Release|AVR.Build.0 = Release|AVR
|
||||||
|
EndGlobalSection
|
||||||
|
GlobalSection(SolutionProperties) = preSolution
|
||||||
|
HideSolutionNode = FALSE
|
||||||
|
EndGlobalSection
|
||||||
|
EndGlobal
|
||||||
62
i2c.hpp
62
i2c.hpp
@ -1,62 +0,0 @@
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|||||||
#pragma once
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|
||||||
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||||||
#include <stddef.h>
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|
||||||
#include <stdint.h>
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|
||||||
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|
||||||
#include "hardware.hpp"
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|
||||||
|
|
||||||
namespace i2c {
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|
||||||
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|
||||||
template <class Driver>
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|
||||||
struct I2c {
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|
||||||
static void init()
|
|
||||||
{
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|
||||||
Driver::init();
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|
||||||
}
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|
||||||
|
|
||||||
template <uint8_t Addr>
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|
||||||
static bool start(bool read)
|
|
||||||
{
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|
||||||
return Driver::template start<Addr>(read);
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|
||||||
}
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|
||||||
|
|
||||||
static bool write(uint8_t data)
|
|
||||||
{
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|
||||||
return Driver::write(data);
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|
||||||
}
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|
||||||
|
|
||||||
template <size_t Bytes>
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||||||
static bool writeBytes(const uint8_t *buffer)
|
|
||||||
{
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|
||||||
for (size_t i = 0; i < Bytes; ++i) {
|
|
||||||
if (!write(buffer[i]))
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|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
||||||
return true;
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|
||||||
}
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|
||||||
|
|
||||||
template <bool LastByte = false>
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|
||||||
static uint8_t read()
|
|
||||||
{
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|
||||||
return Driver::template read<LastByte>();
|
|
||||||
}
|
|
||||||
|
|
||||||
template <size_t Bytes>
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|
||||||
static void readBytes(uint8_t *buffer)
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|
||||||
{
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|
||||||
static_assert(Bytes > 0, "Must read at least 1 byte");
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|
||||||
|
|
||||||
for (size_t i = 0; i < Bytes - 1; ++i) {
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||||||
buffer[i] = read();
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|
||||||
}
|
|
||||||
buffer[Bytes - 1] = read<true>();
|
|
||||||
}
|
|
||||||
|
|
||||||
static void stop()
|
|
||||||
{
|
|
||||||
Driver::stop();
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
} // namespace i2c
|
|
||||||
4
i2c/clock.hpp
Normal file
4
i2c/clock.hpp
Normal file
@ -0,0 +1,4 @@
|
|||||||
|
#pragma once
|
||||||
|
|
||||||
|
#define F_CPU 16000000
|
||||||
|
#include <util/delay.h>
|
||||||
1
i2c/i2c
Submodule
1
i2c/i2c
Submodule
@ -0,0 +1 @@
|
|||||||
|
Subproject commit 5c3fb99c1905559f3a01bf18321b570600a3db2e
|
||||||
196
i2c/i2c.cppproj
Normal file
196
i2c/i2c.cppproj
Normal file
@ -0,0 +1,196 @@
|
|||||||
|
<?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>dce6c7e3-ee26-4d79-826b-08594b9ad897</ProjectGuid>
|
||||||
|
<avrdevice>ATmega328P</avrdevice>
|
||||||
|
<avrdeviceseries>none</avrdeviceseries>
|
||||||
|
<OutputType>Executable</OutputType>
|
||||||
|
<Language>CPP</Language>
|
||||||
|
<OutputFileName>$(MSBuildProjectName)</OutputFileName>
|
||||||
|
<OutputFileExtension>.elf</OutputFileExtension>
|
||||||
|
<OutputDirectory>$(MSBuildProjectDirectory)\$(Configuration)</OutputDirectory>
|
||||||
|
<AssemblyName>i2c</AssemblyName>
|
||||||
|
<Name>i2c</Name>
|
||||||
|
<RootNamespace>i2c</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.stk500</avrtool>
|
||||||
|
<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>
|
||||||
|
</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.directories.IncludePaths>
|
||||||
|
<ListValues>
|
||||||
|
<Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.346\include</Value>
|
||||||
|
</ListValues>
|
||||||
|
</avrgcc.compiler.directories.IncludePaths>
|
||||||
|
<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.directories.IncludePaths>
|
||||||
|
<ListValues>
|
||||||
|
<Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.346\include</Value>
|
||||||
|
</ListValues>
|
||||||
|
</avrgcccpp.compiler.directories.IncludePaths>
|
||||||
|
<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>
|
||||||
|
<avrgcc.compiler.symbols.DefSymbols>
|
||||||
|
<ListValues>
|
||||||
|
<Value>NDEBUG</Value>
|
||||||
|
</ListValues>
|
||||||
|
</avrgcc.compiler.symbols.DefSymbols>
|
||||||
|
<avrgcc.compiler.optimization.level>Optimize for size (-Os)</avrgcc.compiler.optimization.level>
|
||||||
|
<avrgcccpp.compiler.symbols.DefSymbols>
|
||||||
|
<ListValues>
|
||||||
|
<Value>NDEBUG</Value>
|
||||||
|
</ListValues>
|
||||||
|
</avrgcccpp.compiler.symbols.DefSymbols>
|
||||||
|
<avrgcccpp.compiler.optimization.level>Optimize for size (-Os)</avrgcccpp.compiler.optimization.level>
|
||||||
|
</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.directories.IncludePaths>
|
||||||
|
<ListValues>
|
||||||
|
<Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.346\include</Value>
|
||||||
|
</ListValues>
|
||||||
|
</avrgcc.compiler.directories.IncludePaths>
|
||||||
|
<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.directories.IncludePaths>
|
||||||
|
<ListValues>
|
||||||
|
<Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.346\include</Value>
|
||||||
|
</ListValues>
|
||||||
|
</avrgcccpp.compiler.directories.IncludePaths>
|
||||||
|
<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>
|
||||||
|
<avrgcc.compiler.symbols.DefSymbols>
|
||||||
|
<ListValues>
|
||||||
|
<Value>DEBUG</Value>
|
||||||
|
</ListValues>
|
||||||
|
</avrgcc.compiler.symbols.DefSymbols>
|
||||||
|
<avrgcc.compiler.optimization.level>Optimize (-O1)</avrgcc.compiler.optimization.level>
|
||||||
|
<avrgcc.compiler.optimization.DebugLevel>Maximum (-g3)</avrgcc.compiler.optimization.DebugLevel>
|
||||||
|
<avrgcccpp.compiler.symbols.DefSymbols>
|
||||||
|
<ListValues>
|
||||||
|
<Value>DEBUG</Value>
|
||||||
|
</ListValues>
|
||||||
|
</avrgcccpp.compiler.symbols.DefSymbols>
|
||||||
|
<avrgcccpp.compiler.optimization.level>Optimize (-O1)</avrgcccpp.compiler.optimization.level>
|
||||||
|
<avrgcccpp.compiler.optimization.DebugLevel>Maximum (-g3)</avrgcccpp.compiler.optimization.DebugLevel>
|
||||||
|
<avrgcccpp.assembler.debugging.DebugLevel>Default (-Wa,-g)</avrgcccpp.assembler.debugging.DebugLevel>
|
||||||
|
</AvrGccCpp>
|
||||||
|
</ToolchainSettings>
|
||||||
|
</PropertyGroup>
|
||||||
|
<ItemGroup>
|
||||||
|
<Compile Include="clock.hpp">
|
||||||
|
<SubType>compile</SubType>
|
||||||
|
</Compile>
|
||||||
|
<Compile Include="i2c\hardware.hpp">
|
||||||
|
<SubType>compile</SubType>
|
||||||
|
</Compile>
|
||||||
|
<Compile Include="i2c\i2c.hpp">
|
||||||
|
<SubType>compile</SubType>
|
||||||
|
</Compile>
|
||||||
|
<Compile Include="main.cpp">
|
||||||
|
<SubType>compile</SubType>
|
||||||
|
</Compile>
|
||||||
|
</ItemGroup>
|
||||||
|
<ItemGroup>
|
||||||
|
<Folder Include="i2c" />
|
||||||
|
</ItemGroup>
|
||||||
|
<Import Project="$(AVRSTUDIO_EXE_PATH)\\Vs\\Compiler.targets" />
|
||||||
|
</Project>
|
||||||
33
i2c/main.cpp
Normal file
33
i2c/main.cpp
Normal file
@ -0,0 +1,33 @@
|
|||||||
|
#include "clock.hpp"
|
||||||
|
|
||||||
|
#include "i2c/i2c.hpp"
|
||||||
|
|
||||||
|
void i2cTest()
|
||||||
|
{
|
||||||
|
using namespace i2c;
|
||||||
|
using config = Hardware<100000>;
|
||||||
|
|
||||||
|
I2c<config> twi;
|
||||||
|
constexpr auto I2CADDRESS = 0x4B;
|
||||||
|
|
||||||
|
twi.init();
|
||||||
|
|
||||||
|
if (!twi.start<I2CADDRESS>(false)) {
|
||||||
|
twi.stop();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!twi.write(0x7F)) {
|
||||||
|
twi.stop();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
twi.stop();
|
||||||
|
}
|
||||||
|
|
||||||
|
int main()
|
||||||
|
{
|
||||||
|
i2cTest();
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue
Block a user