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ESP32 support

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This commit is contained in:
andrey_gulyants
2023-10-10 20:34:00 +01:00
parent 54c4315c84
commit 94d98858ec
8 changed files with 329 additions and 23 deletions
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244
Tlc5940.cpp
View File

@@ -22,6 +22,14 @@
#include "Tlc5940.h"
#include "pinouts/pin_functions.h"
int sin_pin;
int sout_pin;
int sclk_pin;
int xlat_pin;
int blank_pin;
int gsclk_pin;
int vprg_pin;
int xerr_pin;
/** This will be true (!= 0) if update was just called and the data has not
been latched in yet. */
@@ -85,6 +93,31 @@ void ftm1_isr(void)
Tlc5940_interrupt();
}
#endif
#elif defined (ARDUINO_ARCH_ESP32)
portMUX_TYPE TLC5940_timerMux = portMUX_INITIALIZER_UNLOCKED;
// volatile int TLC5940_xlat_enabled = 0;
// volatile int TLC5940_interrupt_enabled = 0;
void IRAM_ATTR TLC5940_onTimer()
{
portENTER_CRITICAL_ISR(&TLC5940_timerMux);
int xlat_enabled = Tlc.TLC5940_xlat_enabled;
int interrupt_enabled = Tlc.TLC5940_interrupt_enabled;
portEXIT_CRITICAL_ISR(&TLC5940_timerMux);
// BLANK, XLAT
set_pin(blank_pin);
if (xlat_enabled)
{
set_pin(xlat_pin);
clear_pin(xlat_pin);
}
clear_pin(blank_pin);
if (interrupt_enabled)
Tlc5940_interrupt();
}
#endif
/** \defgroup ReqVPRG_ENABLED Functions that Require VPRG_ENABLED
@@ -107,20 +140,52 @@ void ftm1_isr(void)
zeros, or whatever initialValue is set to and the Timers will start.
\param initialValue = 0, optional parameter specifing the inital startup
value */
void Tlc5940::init(uint16_t initialValue)
void Tlc5940::init( uint16_t initialValue, int sin, int sout, int sclk, int xlat, int blank, int gsclk, int vprg, int xerr )
{
/* Pin Setup */
#if defined (ARDUINO_ARCH_ESP32)
sin_pin = sin;
sout_pin = sout;
sclk_pin = sclk;
xlat_pin = xlat;
blank_pin = blank;
gsclk_pin = gsclk;
vprg_pin = vprg;
xerr_pin = xerr;
output_pin(xlat_pin);
output_pin(blank_pin);
clear_pin(xlat_pin);
set_pin(blank_pin); // start with BLANK
#if VPRG_ENABLED
if (vprg_pin >= 0)
{
output_pin(vprg_pin);
clear_pin(vprg_pin); // LOW: GS-reg, HIGH: DC-reg
}
#endif
#if XERR_ENABLED
if (xerr_pin >= 0)
{
pullup_pin(xerr_pin);
}
#endif
set_pin(blank_pin); // leave blank high (until the timers start)
#elif
output_pin(XLAT_DDR, XLAT_PIN);
output_pin(BLANK_DDR, BLANK_PIN);
output_pin(GSCLK_DDR, GSCLK_PIN);
#if VPRG_ENABLED
#if VPRG_ENABLED
output_pin(VPRG_DDR, VPRG_PIN);
clear_pin(VPRG_PORT, VPRG_PIN); // grayscale mode (VPRG low)
#endif
#if XERR_ENABLED
#endif
#if XERR_ENABLED
pullup_pin(XERR_DDR, XERR_PORT, XERR_PIN); // XERR as input, enable pull-up resistor
#endif
set_pin(BLANK_PORT, BLANK_PIN); // leave blank high (until the timers start)
#endif
set_pin(BLANK_PORT, BLANK_PIN); // leave blank high (until the timers start)
tlc_shift8_init();
@@ -129,7 +194,11 @@ void Tlc5940::init(uint16_t initialValue)
disable_XLAT_pulses();
clear_XLAT_interrupt();
tlc_needXLAT = 0;
pulse_pin(XLAT_PORT, XLAT_PIN);
#if defined (ARDUINO_ARCH_ESP32)
pulse_pin(xlat_pin);
#elif
pulse_pin(XLAT_PORT, XLAT_PIN);
#endif
/* Timer Setup */
@@ -218,6 +287,28 @@ void Tlc5940::init(uint16_t initialValue)
NVIC_ENABLE_IRQ(IRQ_FTM1);
CORE_PIN4_CONFIG = PORT_PCR_MUX(3)|PORT_PCR_DSE|PORT_PCR_SRE;
#endif
#elif defined(ARDUINO_ARCH_ESP32)
const uint8_t TIMER_NUM = 0; // hardware timer number
const uint16_t TIMER_DIV = 80; // timer divider to make 1MHz from 80MHz
const uint64_t TIMER_ALM = 2050; // interrupt every 2.050ms
hw_timer_t* TLC5940_timer = NULL;
// start timer
TLC5940_timer = timerBegin(TIMER_NUM, TIMER_DIV, true); // increment mode
timerAttachInterrupt(TLC5940_timer, &TLC5940_onTimer, true); // edge mode
timerAlarmWrite(TLC5940_timer, TIMER_ALM, true); // auto-reload mode
timerAlarmEnable(TLC5940_timer);
// LEDC for GS(Gray-scale) clock
const uint8_t TLC5940_LEDC_CHN = 0; // LEDC channel
const double TLC5940_LEDC_FRQ = 2e6; // LEDC frequency 2MHz
const uint8_t TLC5940_LEDC_RSL = 5; // LEDC resolution 5bit = 32
const uint32_t TLC5940_LEDC_DTY = 8; // LEDC duty 25% .. 8 / 32
ledcSetup(TLC5940_LEDC_CHN, TLC5940_LEDC_FRQ, TLC5940_LEDC_RSL);
ledcAttachPin(gsclk_pin, TLC5940_LEDC_CHN);
ledcWrite(TLC5940_LEDC_CHN, TLC5940_LEDC_DTY);
#endif
update();
}
@@ -249,7 +340,11 @@ uint8_t Tlc5940::update(void)
// adds an extra SCLK pulse unless we've just set dot-correction data
firstGSInput = 0;
} else {
#if defined (ARDUINO_ARCH_ESP32)
pulse_pin(sclk_pin);
#elif
pulse_pin(SCLK_PORT, SCLK_PIN);
#endif
}
uint8_t *p = tlc_GSData;
while (p < tlc_GSData + NUM_TLCS * 24) {
@@ -319,12 +414,77 @@ void Tlc5940::setAll(uint16_t value)
#if VPRG_ENABLED
static inline uint8_t byte_mask(uint8_t bit_ofs, uint8_t bit_num)
{
uint8_t result = 0;
uint8_t num = bit_num;
for (uint8_t i = 0; i < 8; i++)
{
if (i >= bit_ofs && num)
{
result |= (uint8_t)(1 << i);
num--;
}
}
return result;
}
/** \addtogroup ReqVPRG_ENABLED
From the \ref CoreFunctions "Core Functions":
- \link Tlc5940::setAllDC Tlc.setAllDC(uint8_t value(0-63)) \endlink - sets
all the dot correction data to value */
/* @{ */
/** Shifts in the data from the DOT Correction data array, #tlc_DCData.
*/
void Tlc5940::updateDC(void)
{
tlc_dcModeStart();
uint8_t *p = tlc_DCData;
while (p < tlc_DCData + NUM_TLCS * 12) {
tlc_shift8(*p++);
tlc_shift8(*p++);
tlc_shift8(*p++);
}
tlc_dcModeStop();
}
/** Sets channel to value in the DOT Correction data array, #tlc_DCData.
\param channel (0 to #NUM_TLCS * 16 - 1). OUT0 of the first TLC is
channel 0, OUT0 of the next TLC is channel 16, etc.
\param value (0-63). The DOT Correction value, 63 is maximum.
\see get */
void Tlc5940::setDC(TLC_CHANNEL_TYPE channel, uint8_t value)
{
TLC_CHANNEL_TYPE index8 = (NUM_TLCS * 16 - 1) - channel;
uint8_t *index6p = tlc_DCData + ((((uint16_t)index8) * 3) >> 2);
int8_t offset = ((((uint16_t)index8) * 3) % 4) * 2;
value &= 0x3F;
*index6p = (*index6p & ~byte_mask(offset, min(8 - offset, 6))) | (value << offset);
*(index6p+1) = (*(index6p+1) & ~byte_mask(0, max(offset - 2, 0))) | (value >> min(8 - offset, 6));
}
/** Gets the current DOT Correction value for a channel
\param channel (0 to #NUM_TLCS * 16 - 1). OUT0 of the first TLC is
channel 0, OUT0 of the next TLC is channel 16, etc.
\returns current DOT Correction value (0 - 63) for channel
\see set */
uint8_t Tlc5940::getDC(TLC_CHANNEL_TYPE channel)
{
TLC_CHANNEL_TYPE index8 = (NUM_TLCS * 16 - 1) - channel;
uint8_t *index6p = tlc_DCData + ((((uint16_t)index8) * 3) >> 2);
int8_t offset = ((((uint16_t)index8) * 3) % 4) * 2;
uint8_t result = 0;
result |= (*index6p & byte_mask(offset, min(8 - offset, 6))) >> offset;
result |= (*(index6p+1) & byte_mask(0, max(offset - 2, 0))) << min(8 - offset, 6);
return result;
}
/** Sets the dot correction for all channels to value. The dot correction
value correspondes to maximum output current by
\f$\displaystyle I_{OUT_n} = I_{max} \times \frac{DCn}{63} \f$
@@ -335,20 +495,15 @@ void Tlc5940::setAll(uint16_t value)
\param value (0-63) */
void Tlc5940::setAllDC(uint8_t value)
{
tlc_dcModeStart();
uint8_t firstByte = value << 2 | value >> 4;
uint8_t secondByte = value << 4 | value >> 2;
uint8_t thirdByte = value << 6 | value;
for (TLC_CHANNEL_TYPE i = 0; i < NUM_TLCS * 12; i += 3) {
tlc_shift8(firstByte);
tlc_shift8(secondByte);
tlc_shift8(thirdByte);
while (p < tlc_DCData + NUM_TLCS * 12) {
*p++ = firstByte;
*p++ = secondByte;
*p++ = thirdByte;
}
pulse_pin(XLAT_PORT, XLAT_PIN);
tlc_dcModeStop();
}
/* @} */
@@ -361,13 +516,28 @@ void Tlc5940::setAllDC(uint8_t value)
\returns 1 if a TLC is reporting an error, 0 otherwise. */
uint8_t Tlc5940::readXERR(void)
{
return ((XERR_PINS & _BV(XERR_PIN)) == 0);
#if defined (ARDUINO_ARCH_ESP32)
return (digitalRead(xerr_pin) == LOW);
#elif
return ((XERR_PINS & _BV(XERR_PIN)) == 0);
#endif
}
#endif
/* @} */
#if defined (ARDUINO_ARCH_ESP32)
void Tlc5940::XLAT_mode(int val)
{
TLC5940_xlat_enabled = val;
}
void Tlc5940::INT_mode(int val)
{
TLC5940_interrupt_enabled = val;
}
#endif
#if DATA_TRANSFER_MODE == TLC_BITBANG
/** Sets all the bit-bang pins to output */
@@ -393,6 +563,31 @@ void tlc_shift8(uint8_t byte)
#elif DATA_TRANSFER_MODE == TLC_SPI
#if defined (ARDUINO_ARCH_ESP32)
/** Initializes the SPI module */
// SPI to send gray-scale data
const uint32_t TLC5940_SPI_CLK = 8000000; // 8MHz
SPIClass* TLC5940_vspi = NULL;
void tlc_shift8_init(void)
{
TLC5940_vspi = new SPIClass(VSPI);
TLC5940_vspi->begin(sclk_pin, sout_pin, sin_pin, -1);
}
/** Shifts out a byte, MSB first */
void tlc_shift8(uint8_t byte)
{
TLC5940_vspi->beginTransaction(SPISettings(TLC5940_SPI_CLK, MSBFIRST, SPI_MODE0));
TLC5940_vspi->transfer(byte);
TLC5940_vspi->endTransaction();
}
#elif
/** Initializes the SPI module to double speed (f_osc / 2) */
void tlc_shift8_init(void)
{
@@ -414,7 +609,7 @@ void tlc_shift8(uint8_t byte)
while (!(SPSR & _BV(SPIF)))
; // wait for transmission complete
}
#endif
#endif
#if VPRG_ENABLED
@@ -425,13 +620,22 @@ void tlc_dcModeStart(void)
disable_XLAT_pulses(); // ensure that no latches happen
clear_XLAT_interrupt(); // (in case this was called right after update)
tlc_needXLAT = 0;
set_pin(VPRG_PORT, VPRG_PIN); // dot correction mode
#if defined (ARDUINO_ARCH_ESP32)
set_pin(vprg_pin); // dot correction mode
#elif
set_pin(VPRG_PORT, VPRG_PIN); // dot correction mode
#endif
}
/** Switches back to grayscale mode. */
void tlc_dcModeStop(void)
{
clear_pin(VPRG_PORT, VPRG_PIN); // back to grayscale mode
#if defined (ARDUINO_ARCH_ESP32)
clear_pin(vprg_pin); // back to grayscale mode
#elif
clear_pin(VPRG_PORT, VPRG_PIN); // back to grayscale mode
#endif
firstGSInput = 1;
}

40
Tlc5940.h
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@@ -25,6 +25,16 @@
#include <Arduino.h>
#include "tlc_config.h"
#define min(a,b) \
({ __typeof__ (a) _a = (a); \
__typeof__ (b) _b = (b); \
_a < _b ? _a : _b; })
#define max(a,b) \
({ __typeof__ (a) _a = (a); \
__typeof__ (b) _b = (b); \
_a > _b ? _a : _b; })
#if defined(__AVR__)
#ifdef TLC_ATMEGA_8_H
@@ -71,24 +81,43 @@
extern volatile uint8_t tlc_needXLAT;
extern volatile void (*tlc_onUpdateFinished)(void);
extern uint8_t tlc_GSData[NUM_TLCS * 24];
extern uint8_t tlc_DCData[NUM_TLCS * 12];
/** The main Tlc5940 class for the entire library. An instance of this class
will be preinstantiated as Tlc. */
class Tlc5940
{
public:
void init(uint16_t initialValue = 0);
void init( uint16_t initialValue = 0,
int sin = DEFAULT_TLC_MOSI_PIN,
int sout = DEFAULT_TLC_MISO_PIN,
int sclk = DEFAULT_TLC_SCK_PIN,
int xlat = DEFAULT_XLAT_PIN,
int blank = DEFAULT_BLANK_PIN,
int gsclk = DEFAULT_GSCLK_PIN,
int vprg = DEFAULT_VPRG_PIN,
int xerr = DEFAULT_XERR_PIN );
void clear(void);
uint8_t update(void);
void set(TLC_CHANNEL_TYPE channel, uint16_t value);
uint16_t get(TLC_CHANNEL_TYPE channel);
void setAll(uint16_t value);
#if VPRG_ENABLED
void setAllDC(uint8_t value);
void updateDC(void);
void setDC(TLC_CHANNEL_TYPE channel, uint8_t value);
uint8_t getDC(TLC_CHANNEL_TYPE channel);
void setAllDC(uint8_t value);
#endif
#if XERR_ENABLED
uint8_t readXERR(void);
#endif
#if defined (ARDUINO_ARCH_ESP32)
volatile int TLC5940_xlat_enabled = 0;
volatile int TLC5940_interrupt_enabled = 0;
void XLAT_mode(int val);
void INT_mode(int val);
#endif
};
@@ -103,5 +132,12 @@ void tlc_dcModeStop(void);
// for the preinstantiated Tlc variable.
extern Tlc5940 Tlc;
#if defined (ARDUINO_ARCH_ESP32)
#define set_XLAT_interrupt() Tlc.XLAT_mode(1)
#define clear_XLAT_interrupt() Tlc.XLAT_mode(0)
#define enable_XLAT_pulses() Tlc.INT_mode(1)
#define disable_XLAT_pulses() Tlc.INT_mode(0)
#endif
#endif

51
pinouts/Espressif_ESP32.h Normal file
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@@ -0,0 +1,51 @@
/* Copyright (c) 2009 by Alex Leone <acleone ~AT~ gmail.com>
This file is part of the Arduino TLC5940 Library.
The Arduino TLC5940 Library is free software: you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
The Arduino TLC5940 Library is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with The Arduino TLC5940 Library. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef ESPRESSIF_ESP32_H
#define ESPRESSIF_ESP32_H
/** \file
Default pins for the ESP32. Don't edit these. All
changeable pins are defined through Tlc5940::init */
/** MOSI (ESP32 pin 33) -> SIN (TLC pin 26) */
#define DEFAULT_TLC_MOSI_PIN 33
/** MISO (ESP32 pin 25) -> SOUT (TLC pin 17) */
#define DEFAULT_TLC_MISO_PIN 25
/** SCK (ESP32 pin 32) -> SCLK (TLC pin 25) */
#define DEFAULT_TLC_SCK_PIN 32
/** XLAT (ESP32 pin 27) -> XLAT (TLC pin 24) */
#define DEFAULT_XLAT_PIN 27
/** BLANK (ESP32 pin 23) -> BLANK (TLC pin 23) */
#define DEFAULT_BLANK_PIN 23
/** GSCLK (ESP32 pin 12) -> GSCLK (TLC pin 18) */
#define DEFAULT_GSCLK_PIN 12
/** VPRG (Disabled by default) -> VPRG (TLC pin 27) */
#define DEFAULT_VPRG_PIN -1
/** XERR (Disabled by default) -> XERR (TLC pin 16) */
#define DEFAULT_XERR_PIN -1
#endif

5
pinouts/chip_includes.h
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@@ -125,6 +125,11 @@
/* Teensy 4.0, 4.1, MicroMod */
#include "Teensy_IMXRT.h"
#elif defined (ARDUINO_ARCH_ESP32)
#include "Espressif_ESP32.h"
#include <SPI.h>
#else
#error "Unknown Chip!"
#endif

6
pinouts/pin_functions.h
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@@ -19,6 +19,12 @@
#define clear_pin(port, pin) digitalWriteFast(pin, LOW)
#define output_pin(ddr, pin) pinMode(pin, OUTPUT)
#define pullup_pin(ddr, port, pin) pinMode(pin, INPUT_PULLUP)
#elif defined (ARDUINO_ARCH_ESP32)
#define pulse_pin(pin) digitalWrite(pin, HIGH); digitalWrite(pin, LOW)
#define set_pin(pin) digitalWrite(pin, HIGH)
#define clear_pin(pin) digitalWrite(pin, LOW)
#define output_pin(pin) pinMode(pin, OUTPUT)
#define pullup_pin(pin) pinMode(pin, INPUT_PULLUP)
#else
#define pulse_pin(port, pin) digitalWrite(pin, HIGH); digitalWrite(pin, LOW)
#define set_pin(port, pin) digitalWrite(pin, HIGH)

2
tlc_animations.h
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@@ -22,8 +22,10 @@
/** \file
TLC Animation functions. These play animations from PROGMEM. */
#if !defined (ARDUINO_ARCH_ESP32)
#include <avr/pgmspace.h>
#include <avr/io.h>
#endif
#include "tlc_config.h"
#include "Tlc5940.h"

2
tlc_config.h
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@@ -53,7 +53,7 @@
are attached normally.
\note Each TLC needs it's own IREF resistor */
#ifndef NUM_TLCS
#define NUM_TLCS 1
#define NUM_TLCS 2
#endif
/** Determines how data should be transfered to the TLCs. Bit-banging can use

2
tlc_fades.h
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@@ -22,7 +22,9 @@
/** \file
TLC fading functions. */
#if !defined (ARDUINO_ARCH_ESP32)
#include <avr/interrupt.h>
#endif
#include "Tlc5940.h"