hyperion.ng/libsrc/leddevice/dev_other/LedDevicePiBlaster.cpp
LordGrey ed5455458b
Disentangle LedDevice/LinearColorSmoothing, Bug Fixes & Test support (#654)
* Handle Exceptions in main & Pythoninit

* Have SSDPDiscover generic again

* Have SSDPDiscover generic again

* Change Info- to Debug logs as technical service messages

* Nanoleaf - When switched on, ensure UDP mode

* Include SQL Database in Cross-Compile instructions

* Fix Clazy (QT code checker) and clang Warnings

* Stop LedDevice:write for disabled device

* Nanoleaf: Fix uint printfs

* NanoLeaf: Fix indents to tabs

* NanoLeaf - Add debug verbosity switches

* Device switchability support, FileDevice with timestamp support

* Nanoleaf Light Panels now support External Control V2

* Enhance LedDeviceFile by Timestamp + fix readyness

* Stop color stream, if LedDevice disabled

* Nanoleaf - remove switchability

* Fix MultiColorAdjustment, if led-range is greater lednum

* Fix logging

* LedFileDevice/LedDevice - add testing support

* New "Led Test" effect

* LedDeviceFile - Add chrono include + Allow Led rewrites for testing

* Stabilize Effects for LedDevices where latchtime = 0

* Update LedDeviceFile, allow latchtime = 0

* Distangle LinearColorSmoothing and LEDDevice, Fix Effect configuration updates

* Updates LedDeviceFile - Initialize via Open

* Updates LedDeviceNanoleaf - Initialize via Open, Remove throwing exceptions

* Updates ProviderUDP - Remove throwing exceptions

* Framebuffer - Use precise timer

* TestSpi - Align to LedDevice updates

* Pretty Print CrossCompileHowTo as markdown-file

* Ensure that output is only written when LedDevice is ready

* Align APA102 Device to new device staging

* Logger - Remove clang warnings on extra semicolon

* Devices SPI - Align to Device stages and methods

* Fix cppcheck and clang findings

* Add Code-Template for new Devices

* Align devices to stages and methods, clean-up some code

* Allow to reopen LedDevice without restart

* Revert change "Remove Connect (PriorityMuxer::visiblePriorityChanged -> Hyperion::update) due to double writes"

* Remove visiblePriorityChanged from LedDevice to decouple LedDevice from hyperion logic

* Expose LedDevice getLedCount and align signedness
2020-02-10 15:21:58 +01:00

189 lines
4.0 KiB
C++

// STL includes
#include <cstring>
#include <csignal>
// QT includes
#include <QFile>
// Local LedDevice includes
#include "LedDevicePiBlaster.h"
LedDevicePiBlaster::LedDevicePiBlaster(const QJsonObject &deviceConfig)
: _fid(nullptr)
{
_devConfig = deviceConfig;
_deviceReady = false;
signal(SIGPIPE, SIG_IGN);
// initialise the mapping tables
// -1 is invalid
// z is also meaningless
// { "gpio" : 4, "ledindex" : 0, "ledcolor" : "r" },
#define TABLE_SZ sizeof(_gpio_to_led)/sizeof(_gpio_to_led[0])
for (unsigned i=0; i < TABLE_SZ; i++ )
{
_gpio_to_led[i] = -1;
_gpio_to_color[i] = 'z';
}
}
LedDevicePiBlaster::~LedDevicePiBlaster()
{
}
bool LedDevicePiBlaster::init(const QJsonObject &deviceConfig)
{
bool isInitOK = LedDevice::init(deviceConfig);
_deviceName = deviceConfig["output"].toString("/dev/pi-blaster");
if ( isInitOK )
{
QJsonArray gpioMapping = deviceConfig["gpiomap"].toArray();
if (gpioMapping.isEmpty())
{
this->setInError("PiBlaster: no gpiomap defined.");
return false;
}
// walk through the json config and populate the mapping tables
for(QJsonArray::const_iterator gpioArray = gpioMapping.begin(); gpioArray != gpioMapping.end(); ++gpioArray)
{
const QJsonObject value = (*gpioArray).toObject();
const int gpio = value["gpio"].toInt(-1);
const int ledindex = value["ledindex"].toInt(-1);
const std::string ledcolor = value["ledcolor"].toString("z").toStdString();
// ignore missing/invalid settings
if ( (gpio >= 0) && (gpio < signed(TABLE_SZ)) && (ledindex >= 0) ){
_gpio_to_led[gpio] = ledindex;
_gpio_to_color[gpio] = ledcolor[0]; // 1st char of string
} else {
Warning( _log, "IGNORING gpio %d ledindex %d color %c", gpio,ledindex, ledcolor[0]);
}
}
}
return isInitOK;
}
LedDevice* LedDevicePiBlaster::construct(const QJsonObject &deviceConfig)
{
return new LedDevicePiBlaster(deviceConfig);
}
int LedDevicePiBlaster::open()
{
int retval = -1;
QString errortext;
_deviceReady = false;
if ( init(_devConfig) )
{
if (_fid != nullptr)
{
// The file pointer is already open
errortext = QString ("Device (%1) is already open.").arg(_deviceName);
}
else
{
if (!QFile::exists(_deviceName))
{
errortext = QString ("The device (%1) does not yet exist.").arg(_deviceName);
}
else
{
_fid = fopen(QSTRING_CSTR(_deviceName), "w");
if (_fid == nullptr)
{
errortext = QString ("Failed to open device (%1). Error message: %2").arg(_deviceName, strerror(errno));
}
else
{
Info( _log, "Connected to device(%s)", QSTRING_CSTR(_deviceName));
retval = 0;
setEnable(true);
}
}
}
if ( retval < 0 )
{
this->setInError( errortext );
}
}
return retval;
}
void LedDevicePiBlaster::close()
{
LedDevice::close();
// LedDevice specific closing activites
// Close the device (if it is opened)
if (_fid != nullptr)
{
fclose(_fid);
_fid = nullptr;
}}
int LedDevicePiBlaster::write(const std::vector<ColorRgb> & ledValues)
{
// Attempt to open if not yet opened
if (_fid == nullptr && open() < 0)
{
return -1;
}
for (unsigned int i=0; i < TABLE_SZ; i++ )
{
int valueIdx = _gpio_to_led[ i ];
if ( (valueIdx >= 0) && (valueIdx < static_cast<int>( _ledCount)) )
{
double pwmDutyCycle = 0.0;
switch (_gpio_to_color[ i ])
{
case 'r':
pwmDutyCycle = ledValues[valueIdx].red / 255.0;
break;
case 'g':
pwmDutyCycle = ledValues[valueIdx].green / 255.0;
break;
case 'b':
pwmDutyCycle = ledValues[valueIdx].blue / 255.0;
break;
case 'w':
pwmDutyCycle = ledValues[valueIdx].red;
pwmDutyCycle += ledValues[valueIdx].green;
pwmDutyCycle += ledValues[valueIdx].blue;
pwmDutyCycle /= (3.0*255.0);
break;
default:
continue;
}
// fprintf(_fid, "%i=%f\n", iPins[iPin], pwmDutyCycle);
if ( (fprintf(_fid, "%i=%f\n", i, pwmDutyCycle) < 0)
|| (fflush(_fid) < 0)) {
if (_fid != nullptr)
{
fclose(_fid);
_fid = nullptr;
return -1;
}
}
}
}
return 0;
}