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Tlc59711 tune (#785)

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* a little duplication of constants

* Update Tlc59711GenericMethod.h

remove temp buffer and just send words reversed
add custom default speed that works without flicker
This commit is contained in:
Michael Miller
2024-03-18 17:20:10 -07:00
committed by GitHub
parent 07ae6cf4b3
commit 8062b3a7ce
2 changed files with 47 additions and 59 deletions
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37
src/internal/features/Tlc59711RgbFeatures.h
View File

@@ -84,6 +84,8 @@ public:
{
}
static constexpr uint8_t MaxBrightness = 127;
static constexpr size_t c_dataPerChipSize = 24;
static constexpr size_t c_settingsPerChipSize = 4;
const uint8_t RedGroupBrightness;
const uint8_t GreenGroupBrightness;
@@ -96,27 +98,13 @@ class Tlc59711ElementsSettings
public:
typedef Tlc69711Settings SettingsObject;
static constexpr size_t SettingsPerChipSize = 4;
static constexpr size_t SettingsSize = 2 * SettingsPerChipSize;
static void Encode(uint8_t* encoded, const SettingsObject& settings, bool emiAlternate = false)
static constexpr size_t SettingsSize = Tlc69711Settings::c_settingsPerChipSize;
static void Encode(uint8_t* encoded, const SettingsObject& settings)
{
uint8_t control = settings.Control;
if (emiAlternate)
{
if (control & Tlc69711_Control_EmiRisingEdge)
{
// clear the flag
control &= ~Tlc69711_Control_EmiRisingEdge;
}
else
{
// set the flag
control |= Tlc69711_Control_EmiRisingEdge;
}
}
*encoded++ = 0b10010100 | (control & Tlc69711_Control_Mask1);
*encoded++ = (control & Tlc69711_Control_Mask2) | settings.BlueGroupBrightness >> 2;
*encoded++ = settings.BlueGroupBrightness << 6 | settings.GreenGroupBrightness >> 1;
@@ -137,7 +125,7 @@ public:
// but the Tlc59711Method will store in a member variable
// BUT methods don't know anything about the feature settings
// Thought C: (Winner winner, chicken dinner)
// Thought C:
// Leave all current work alone
// Set SettingsSize to 2 times SettingsPerChipSize
// Consider it at the front of the data buffer
@@ -145,13 +133,14 @@ public:
// have our Tlc59711Method know about the two and send the
// already interleaving settings and data
// settings are at the front of the data stream
uint8_t* pSet = pData;
// Thought D: (current)
// Leave all current work alone
// Use one settings at the front of data
// have the method know details how to duplicate it if needed for emi
// as it already neeeds to interleaving settings per chip with data
// encode two, for alternating use for EMI reduction
Encode(pSet, settings, false);
pSet += SettingsPerChipSize;
Encode(pSet, settings, true);
// settings are at the front of the data stream
Encode(pData, settings);
}
static uint8_t* pixels([[maybe_unused]] uint8_t* pData, [[maybe_unused]] size_t sizeData)

69
src/internal/methods/Tlc59711GenericMethod.h
View File

@@ -34,6 +34,19 @@ License along with NeoPixel. If not, see
#include "TwoWireDebugImple.h"
#endif
// this custom faster speed works while 3Mhz doesn't
// by works, meaning no flicker between chips
// so it used as the default when speed isn't specified in the method
class SpiSpeed3600Khz
{
public:
typedef NeoNoSettings SettingsObject;
SpiSpeed3600Khz() {};
static void applySettings([[maybe_unused]] const SettingsObject& settings) {}
static constexpr uint32_t Clock = 3600000L;
};
template <typename T_TWOWIRE>
class Tlc59711MethodBase
@@ -46,8 +59,7 @@ public:
uint16_t pixelCount,
size_t elementSize,
size_t settingsSize) :
_sizeData(NeoUtil::RoundUp(pixelCount * elementSize, c_dataPerChipSize) + settingsSize),
_sizeSettings(settingsSize),
_sizeData(NeoUtil::RoundUp(pixelCount * elementSize, Tlc69711Settings::c_dataPerChipSize) + settingsSize),
_wire(pinClock, pinData)
{
_data = static_cast<uint8_t*>(malloc(_sizeData));
@@ -104,43 +116,33 @@ public:
#endif
}
const size_t sizeSetting = (_sizeSettings / 2); // we have two variants
const uint8_t* pSettingsA = _data;
const uint8_t* pSettingsB = _data + sizeSetting;
const uint8_t* pSettings = pSettingsA;
const uint8_t* pSettings = _data; // settings at front
uint8_t reversedData[c_dataPerChipSize];
// note pSrc is pre-decremented before first use
uint16_t* pSrc = reinterpret_cast<uint16_t*>(_data + _sizeData);
uint16_t* pSrcEnd = reinterpret_cast<uint16_t*>(_data + _sizeSettings);
uint16_t* pSrcEnd = reinterpret_cast<uint16_t*>(_data + Tlc69711Settings::c_settingsPerChipSize);
_wire.beginTransaction();
while (pSrc > pSrcEnd)
{
// data needs to be in reverse order when sent
// copy it in reverse order to temp buffer reversedData
// but it is also 16 bit that retains order
uint16_t* pDest = reinterpret_cast<uint16_t*>(reversedData);
uint16_t* pDestEnd = reinterpret_cast<uint16_t*>(reversedData + c_dataPerChipSize);
while (pDest < pDestEnd)
{
*pDest++ = *(--pSrc);
}
// settings
_wire.transmitBytes(pSettings, sizeSetting);
_wire.transmitBytes(pSettings, Tlc69711Settings::c_settingsPerChipSize);
// data needs to be in reverse order when sent
// but it is also 16 bit that retains order
// (don't go changing endian)
uint16_t dest;
uint16_t* pSrcChipEnd = pSrc - (Tlc69711Settings::c_dataPerChipSize / 2);
while (pSrc > pSrcChipEnd)
{
// note pre-decrement on pSrc
dest = *(--pSrc);
// send this chips "fixed order" data
_wire.transmitBytes(reversedData, c_dataPerChipSize);
// toggle settings varient for next chip
if (pSettings == pSettingsA)
{
pSettings = pSettingsB;
}
else
{
pSettings = pSettingsA;
_wire.transmitByte(dest >> 8);
_wire.transmitByte(dest);
}
}
@@ -171,10 +173,7 @@ public:
}
private:
static constexpr size_t c_dataPerChipSize = 24;
const size_t _sizeData; // Size of '_data' buffer below
const size_t _sizeSettings;
T_TWOWIRE _wire;
uint8_t* _data; // Holds Settings and LED color values
@@ -194,7 +193,7 @@ typedef Tlc59711MethodBase<TwoWireSpiImple<SpiSpeed1Mhz>> Tlc59711Spi1MhzMethod;
typedef Tlc59711MethodBase<TwoWireSpiImple<SpiSpeed500Khz>> Tlc59711Spi500KhzMethod;
typedef Tlc59711MethodBase<TwoWireSpiImple<SpiSpeedHz>> Tlc59711SpiHzMethod;
typedef Tlc59711Spi2MhzMethod Tlc59711SpiMethod;
typedef Tlc59711MethodBase<TwoWireSpiImple<SpiSpeed3600Khz>> Tlc59711SpiMethod;
#endif
#if defined(ARDUINO_ARCH_ESP32)
@@ -208,7 +207,7 @@ typedef Tlc59711MethodBase<TwoWireSpiImple<SpiSpeed1Mhz>> Tlc59711Esp32Vspi1MhzM
typedef Tlc59711MethodBase<TwoWireSpiImple<SpiSpeed500Khz>> Tlc59711Esp32Vspi500KhzMethod;
typedef Tlc59711MethodBase<TwoWireSpiImple<SpiSpeedHz>> Tlc59711Esp32VspiHzMethod;
typedef Tlc59711Spi2MhzMethod Tlc59711Esp32VspiMethod;
typedef Tlc59711MethodBase<TwoWireSpiImple<SpiSpeed3600Khz>> Tlc59711Esp32VspiMethod;
#include "TwoWireHspiImple.h"
typedef Tlc59711MethodBase<TwoWireHspiImple<SpiSpeed40Mhz>> Tlc59711Esp32Hspi40MhzMethod;
@@ -220,5 +219,5 @@ typedef Tlc59711MethodBase<TwoWireHspiImple<SpiSpeed1Mhz>> Tlc59711Esp32Hspi1Mhz
typedef Tlc59711MethodBase<TwoWireHspiImple<SpiSpeed500Khz>> Tlc59711Esp32Hspi500KhzMethod;
typedef Tlc59711MethodBase<TwoWireHspiImple<SpiSpeedHz>> Tlc59711Esp32HspiHzMethod;
typedef Tlc59711Esp32Hspi2MhzMethod Tlc59711Esp32HspiMethod;
typedef Tlc59711MethodBase<TwoWireHspiImple<SpiSpeed3600Khz>> Tlc59711Esp32HspiMethod;
#endif