Frozenverse/TLC5940
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Add support for Teensy 4

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PaulStoffregen 2022-02-25 07:27:48 -08:00
parent 0c19010948
commit e82dba6210
5 changed files with 85 additions and 2 deletions
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35
Tlc5940.cpp
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@ -71,13 +71,20 @@ ISR(TIMER1_OVF_vect)
}
#elif defined(__arm__) && defined(TEENSYDUINO)
#if defined(__IMXRT1062__)
void flexpwm42_isr(void)
{
FLEXPWM4_SM2STS = FLEXPWM_SMSTS_RF;
Tlc5940_interrupt();
}
#else
void ftm1_isr(void)
{
uint32_t sc = FTM1_SC;
if (sc & 0x80) FTM1_SC = sc & 0x7F;
Tlc5940_interrupt();
}
#endif
#endif
/** \defgroup ReqVPRG_ENABLED Functions that Require VPRG_ENABLED
@ -162,6 +169,31 @@ void Tlc5940::init(uint16_t initialValue)
TCCR1B |= _BV(CS10); // no prescale, (start pwm output)
#elif defined(__arm__) && defined(TEENSYDUINO)
#if defined(__IMXRT1062__)
/* Teensy 4.0, 4.1, MicroMod */
clear_pin(XLAT_DDR, XLAT_PIN);
analogWriteFrequency(5, 4000000);
analogWrite(5, 128);
const uint32_t newdiv = (uint32_t)((float)F_BUS_ACTUAL / 4 / 1000 + 0.5f);
FLEXPWM4_MCTRL |= FLEXPWM_MCTRL_CLDOK(4);
FLEXPWM4_SM2CTRL = FLEXPWM_SMCTRL_FULL | FLEXPWM_SMCTRL_PRSC(2); // 3146
FLEXPWM4_SM2VAL0 = newdiv - 1;
FLEXPWM4_SM2VAL1 = newdiv - 1;
FLEXPWM4_SM2VAL2 = newdiv - 7; // pin 2 = FlexPWM4_2_A = BLANK
FLEXPWM4_SM2VAL3 = newdiv - 1;
FLEXPWM4_SM2VAL4 = newdiv - 6; // pin 3 = FlexPWM4_2_B = XLAT
FLEXPWM4_SM2VAL5 = newdiv - 2;
FLEXPWM4_OUTEN = FLEXPWM_OUTEN_PWMA_EN(4) | FLEXPWM_OUTEN_PWMB_EN(4);
FLEXPWM4_MCTRL |= FLEXPWM_MCTRL_LDOK(4);
CORE_PIN2_CONFIG = 1;
CORE_PIN2_PADCONFIG = IOMUXC_PAD_DSE(7);
CORE_PIN3_PADCONFIG = IOMUXC_PAD_DSE(7);
FLEXPWM4_SM2INTEN = 0;
FLEXPWM4_SM2STS = 0x3FFF;
attachInterruptVector(IRQ_FLEXPWM4_2, flexpwm42_isr);
NVIC_ENABLE_IRQ(IRQ_FLEXPWM4_2);
#else
/* Teensy 3.0, 3.1, 3.2, 3.5, 3.6 */
clear_pin(XLAT_DDR, XLAT_PIN);
SIM_SCGC4 |= SIM_SCGC4_CMT;
CMT_MSC = 0;
@ -185,6 +217,7 @@ void Tlc5940::init(uint16_t initialValue)
FTM1_SC = FTM_SC_CLKS(1) | FTM_SC_CPWMS;
NVIC_ENABLE_IRQ(IRQ_FTM1);
CORE_PIN4_CONFIG = PORT_PCR_MUX(3)|PORT_PCR_DSE|PORT_PCR_SRE;
#endif
#endif
update();
}

7
Tlc5940.h
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@ -50,10 +50,17 @@
#define disable_XLAT_pulses() TCCR1A = _BV(COM1B1)
#elif defined(__arm__) && defined(TEENSYDUINO)
#if defined(__IMXRT1062__)
#define set_XLAT_interrupt() FLEXPWM4_SM2STS = FLEXPWM_SMSTS_RF; FLEXPWM4_SM2INTEN = FLEXPWM_SMINTEN_RIE;
#define clear_XLAT_interrupt() FLEXPWM4_SM2INTEN = 0;
#define enable_XLAT_pulses() CORE_PIN3_CONFIG = 1;
#define disable_XLAT_pulses() CORE_PIN3_CONFIG = 5;
#else
#define set_XLAT_interrupt() FTM1_SC = FTM_SC_CLKS(1) | FTM_SC_CPWMS | FTM_SC_TOIE | (FTM1_SC & FTM_SC_PS(7))
#define clear_XLAT_interrupt() FTM1_SC = FTM_SC_CLKS(1) | FTM_SC_CPWMS | (FTM1_SC & FTM_SC_PS(7))
#define enable_XLAT_pulses() CORE_PIN3_CONFIG = PORT_PCR_MUX(3)|PORT_PCR_DSE|PORT_PCR_SRE
#define disable_XLAT_pulses() CORE_PIN3_CONFIG = PORT_PCR_MUX(1)|PORT_PCR_DSE|PORT_PCR_SRE
#endif
#endif

37
pinouts/Teensy_IMXRT.h Normal file
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@ -0,0 +1,37 @@
#ifndef TLC_Teensy_IMXRT_h
#define TLC_Teensy_IMXRT_h
// bitbang I/O is pretty fast on Teensy 3.1
// and avoids SPI sharing problems
#ifdef DATA_TRANSFER_MODE
#undef DATA_TRANSFER_MODE
#endif
#define DATA_TRANSFER_MODE TLC_BITBANG
// Teensy pin 6 -> SIN (TLC pin 26)
#define DEFAULT_BB_SIN_PIN 6
#define DEFAULT_BB_SIN_PORT 6
#define DEFAULT_BB_SIN_DDR 6
// Teensy pin 7 -> SCLK (TLC pin 25)
#define DEFAULT_BB_SCLK_PIN 7
#define DEFAULT_BB_SCLK_PORT 7
#define DEFAULT_BB_SCLK_DDR 7
// FTM1_CH0 (Teensy pin 3) -> XLAT (TLC pin 24)
#define XLAT_PIN 3
#define XLAT_PORT 3
#define XLAT_DDR 3
// FTM1_CH1 (Teensy pin 4) -> BLANK (TLC pin 23)
#define BLANK_PIN 2
#define BLANK_PORT 2
#define BLANK_DDR 2
// CMTOUT (Teensy pin 5) -> GSCLK (TLC pin 18)
#define GSCLK_PIN 5
#define GSCLK_PORT 5
#define GSCLK_DDR 5
#endif

4
pinouts/chip_includes.h
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@ -120,6 +120,10 @@
/* Teensy 3.0 & 3.1 & 3.2 & 3.5 & 3.6*/
#include "Teensy_KinetisK20.h"
#elif defined (__IMXRT1062__)
/* Teensy 4.0, 4.1, MicroMod */
#include "Teensy_IMXRT.h"
#else
#error "Unknown Chip!"

4
pinouts/pin_functions.h
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@ -8,7 +8,9 @@
#define output_pin(ddr, pin) ddr |= _BV(pin)
#define pullup_pin(ddr, port, pin) ddr &= ~_BV(pin); port |= _BV(pin)
#elif defined(TEENSYDUINO)
#if F_CPU > 48000000
#if F_CPU > 120000000
#define pulse_pin(port, pin) delayNanoseconds(10); digitalWriteFast(pin, HIGH); delayNanoseconds(20); digitalWriteFast(pin, LOW)
#elif F_CPU > 48000000
#define pulse_pin(port, pin) digitalWriteFast(pin, HIGH); asm("nop"); digitalWriteFast(pin, LOW)
#else
#define pulse_pin(port, pin) digitalWriteFast(pin, HIGH); digitalWriteFast(pin, LOW)