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This commit is contained in:
Jonathan Naylor
2020-12-15 16:21:07 +00:00
parent 135fd04e0d
commit d77e2a00ce
126 changed files with 12881 additions and 8106 deletions
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69
I2CController.cpp
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@@ -1,5 +1,5 @@
/*
* Copyright (C) 2002-2004,2007-2011,2013,2014-2017 by Jonathan Naylor G4KLX
* Copyright (C) 2002-2004,2007-2011,2013,2014-2017,2020 by Jonathan Naylor G4KLX
* Copyright (C) 1999-2001 by Thomas Sailor HB9JNX
*
* This program is free software; you can redistribute it and/or modify
@@ -17,6 +17,8 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#if defined(__linux__)
#include "I2CController.h"
#include "Log.h"
@@ -24,52 +26,18 @@
#include <cassert>
#include <sys/types.h>
#if defined(_WIN32) || defined(_WIN64)
#include <setupapi.h>
#include <winioctl.h>
CI2CController::CI2CController(const std::string& device, SERIAL_SPEED speed, unsigned int address, bool assertRTS) :
CSerialController(device, speed, assertRTS),
m_address(address)
{
}
CI2CController::~CI2CController()
{
}
bool CI2CController::open()
{
return CSerialController::open();
}
int CI2CController::read(unsigned char* buffer, unsigned int length)
{
return CSerialController::read(buffer, length);
}
int CI2CController::write(const unsigned char* buffer, unsigned int length)
{
return CSerialController::write(buffer, length);
}
#else
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <cerrno>
#include <fcntl.h>
#include <unistd.h>
#include <termios.h>
#if defined(__linux__)
#include <linux/i2c-dev.h>
#endif
CI2CController::CI2CController(const std::string& device, SERIAL_SPEED speed, unsigned int address, bool assertRTS) :
CSerialController(device, speed, assertRTS),
m_address(address)
CI2CController::CI2CController(const std::string& device, unsigned int address) :
m_device(device),
m_address(address),
m_fd(-1)
{
}
@@ -81,7 +49,6 @@ bool CI2CController::open()
{
assert(m_fd == -1);
#if defined(__linux__)
m_fd = ::open(m_device.c_str(), O_RDWR);
if (m_fd < 0) {
LogError("Cannot open device - %s", m_device.c_str());
@@ -89,19 +56,16 @@ bool CI2CController::open()
}
if (::ioctl(m_fd, I2C_TENBIT, 0) < 0) {
LogError("CI2C: failed to set 7bitaddress");
LogError("I2C: failed to set 7bitaddress");
::close(m_fd);
return false;
}
if (::ioctl(m_fd, I2C_SLAVE, m_address) < 0) {
LogError("CI2C: Failed to acquire bus access/talk to slave 0x%02X", m_address);
LogError("I2C: Failed to acquire bus access/talk to slave 0x%02X", m_address);
::close(m_fd);
return false;
}
#else
#warning "I2C controller supports Linux only"
#endif
return true;
}
@@ -117,7 +81,6 @@ int CI2CController::read(unsigned char* buffer, unsigned int length)
unsigned int offset = 0U;
while (offset < length) {
#if defined(__linux__)
ssize_t n = ::read(m_fd, buffer + offset, 1U);
if (n < 0) {
if (errno != EAGAIN) {
@@ -128,7 +91,6 @@ int CI2CController::read(unsigned char* buffer, unsigned int length)
if (n > 0)
offset += n;
#endif
}
return length;
@@ -144,10 +106,7 @@ int CI2CController::write(const unsigned char* buffer, unsigned int length)
unsigned int ptr = 0U;
while (ptr < length) {
ssize_t n = 0U;
#if defined(__linux__)
n = ::write(m_fd, buffer + ptr, 1U);
#endif
ssize_t n = ::write(m_fd, buffer + ptr, 1U);
if (n < 0) {
if (errno != EAGAIN) {
LogError("Error returned from write(), errno=%d", errno);
@@ -162,4 +121,12 @@ int CI2CController::write(const unsigned char* buffer, unsigned int length)
return length;
}
void CI2CController::close()
{
assert(m_fd != -1);
::close(m_fd);
m_fd = -1;
}
#endif