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Begin Teensy 3.1 port

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PaulStoffregen
2014-06-07 18:47:44 -07:00
parent d765d114e0
commit ba10c7c572
6 changed files with 118 additions and 32 deletions
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55
Tlc5940.cpp
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@@ -19,14 +19,9 @@
/** \file
Tlc5940 class functions. */
#include <avr/io.h>
#include <avr/interrupt.h>
#include "tlc_config.h"
#include "Tlc5940.h"
#include "pinouts/pin_functions.h"
/** Pulses a pin - high then low. */
#define pulse_pin(port, pin) port |= _BV(pin); port &= ~_BV(pin)
/** This will be true (!= 0) if update was just called and the data has not
been latched in yet. */
@@ -58,7 +53,7 @@ uint8_t tlc_GSData[NUM_TLCS * 24];
static uint8_t firstGSInput;
/** Interrupt called after an XLAT pulse to prevent more XLAT pulses. */
ISR(TIMER1_OVF_vect)
static inline void Tlc5940_interrupt(void)
{
disable_XLAT_pulses();
clear_XLAT_interrupt();
@@ -69,6 +64,12 @@ ISR(TIMER1_OVF_vect)
}
}
#if defined(__AVR__)
ISR(TIMER1_OVF_vect) { Tlc5940_interrupt(); }
#elif defined(__avr__) && defined(TEENSYDUINO)
#endif
/** \defgroup ReqVPRG_ENABLED Functions that Require VPRG_ENABLED
Functions that require VPRG_ENABLED == 1.
You can enable VPRG by changing
@@ -92,18 +93,18 @@ ISR(TIMER1_OVF_vect)
void Tlc5940::init(uint16_t initialValue)
{
/* Pin Setup */
XLAT_DDR |= _BV(XLAT_PIN);
BLANK_DDR |= _BV(BLANK_PIN);
GSCLK_DDR |= _BV(GSCLK_PIN);
output_pin(XLAT_DDR, XLAT_PIN);
output_pin(BLANK_DDR, BLANK_PIN);
output_pin(GSCLK_DDR, GSCLK_PIN);
#if VPRG_ENABLED
VPRG_DDR |= _BV(VPRG_PIN);
VPRG_PORT &= ~_BV(VPRG_PIN); // grayscale mode (VPRG low)
output_pin(VPRG_DDR, VPRG_PIN);
clear_pin(VPRG_PORT, VPRG_PIN); // grayscale mode (VPRG low)
#endif
#if XERR_ENABLED
XERR_DDR &= ~_BV(XERR_PIN); // XERR as input
XERR_PORT |= _BV(XERR_PIN); // enable pull-up resistor
#endif
BLANK_PORT |= _BV(BLANK_PIN); // leave blank high (until the timers start)
set_pin(BLANK_PORT, BLANK_PIN); // leave blank high (until the timers start)
tlc_shift8_init();
@@ -116,7 +117,7 @@ void Tlc5940::init(uint16_t initialValue)
/* Timer Setup */
#if defined(__AVR__)
/* Timer 1 - BLANK / XLAT */
TCCR1A = _BV(COM1B1); // non inverting, output on OC1B, BLANK
TCCR1B = _BV(WGM13); // Phase/freq correct PWM, ICR1 top
@@ -150,6 +151,10 @@ void Tlc5940::init(uint16_t initialValue)
TCCR2B |= _BV(CS20); // no prescale, (start pwm output)
#endif
TCCR1B |= _BV(CS10); // no prescale, (start pwm output)
#elif defined(__avr__) && defined(TEENSYDUINO)
#endif
update();
}
@@ -304,9 +309,9 @@ uint8_t Tlc5940::readXERR(void)
/** Sets all the bit-bang pins to output */
void tlc_shift8_init(void)
{
SIN_DDR |= _BV(SIN_PIN); // SIN as output
SCLK_DDR |= _BV(SCLK_PIN); // SCLK as output
SCLK_PORT &= ~_BV(SCLK_PIN);
output_pin(SIN_DDR, SIN_PIN); // SIN as output
output_pin(SCLK_DDR, SCLK_PIN); // SCLK as output
clear_pin(SCLK_PORT, SCLK_PIN);
}
/** Shifts a byte out, MSB first */
@@ -314,9 +319,9 @@ void tlc_shift8(uint8_t byte)
{
for (uint8_t bit = 0x80; bit; bit >>= 1) {
if (bit & byte) {
SIN_PORT |= _BV(SIN_PIN);
set_pin(SIN_PORT, SIN_PIN);
} else {
SIN_PORT &= ~_BV(SIN_PIN);
clear_pin(SIN_PORT, SIN_PIN);
}
pulse_pin(SCLK_PORT, SCLK_PIN);
}
@@ -327,11 +332,11 @@ void tlc_shift8(uint8_t byte)
/** Initializes the SPI module to double speed (f_osc / 2) */
void tlc_shift8_init(void)
{
SIN_DDR |= _BV(SIN_PIN); // SPI MOSI as output
SCLK_DDR |= _BV(SCLK_PIN); // SPI SCK as output
TLC_SS_DDR |= _BV(TLC_SS_PIN); // SPI SS as output
output_pin(SIN_DDR, SIN_PIN); // SPI MOSI as output
output_pin(SCLK_DDR, SCLK_PIN); // SPI SCK as output
output_pin(TLC_SS_DDR, TLC_SS_PIN); // SPI SS as output
SCLK_PORT &= ~_BV(SCLK_PIN);
clear_pin(SCLK_PORT, SCLK_PIN);
SPSR = _BV(SPI2X); // double speed (f_osc / 2)
SPCR = _BV(SPE) // enable SPI
@@ -356,13 +361,13 @@ 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;
VPRG_PORT |= _BV(VPRG_PIN); // dot correction mode
set_pin(VPRG_PORT, VPRG_PIN); // dot correction mode
}
/** Switches back to grayscale mode. */
void tlc_dcModeStop(void)
{
VPRG_PORT &= ~_BV(VPRG_PIN); // back to grayscale mode
clear_pin(VPRG_PORT, VPRG_PIN); // back to grayscale mode
firstGSInput = 1;
}

16
Tlc5940.h
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@@ -22,9 +22,10 @@
/** \file
Tlc5940 library header file. */
#include <stdint.h>
#include <Arduino.h>
#include "tlc_config.h"
#if defined(__AVR__)
#ifdef TLC_ATMEGA_8_H
/** Enables the Timer1 Overflow interrupt, which will fire after an XLAT
@@ -48,6 +49,19 @@
/** Disables the output of XLAT pulses */
#define disable_XLAT_pulses() TCCR1A = _BV(COM1B1)
#elif defined(__arm__) && defined(TEENSYDUINO)
#define set_XLAT_interrupt()
#define clear_XLAT_interrupt()
#define enable_XLAT_pulses()
#define disable_XLAT_pulses()
#endif
extern volatile uint8_t tlc_needXLAT;
extern volatile void (*tlc_onUpdateFinished)(void);
extern uint8_t tlc_GSData[NUM_TLCS * 24];

38
pinouts/Teensy_KinetisK20.h Normal file
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@@ -0,0 +1,38 @@
#ifndef TLC_Teensy_xxU4_h
#define TLC_Teensy_xxU4_h
#if DATA_TRANSFER_MODE == TLC_BITBANG
#error "If you want bitbang mode, insert pin defs here"
#endif
// MOSI (Teensy pin 11) -> SIN (TLC pin 26)
#define TLC_MOSI_PIN 11
#define TLC_MOSI_PORT 11
#define TLC_MOSI_DDR 11
// SCK (Teensy pin 13) -> SCLK (TLC pin 25)
#define TLC_SCK_PIN 13
#define TLC_SCK_PORT 13
#define TLC_SCK_DDR 13
// SS (Teensy pin 10)
#define TLC_SS_PIN 10
#define TLC_SS_DDR 10
// 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 4
#define BLANK_PORT 4
#define BLANK_DDR 4
// CMTOUT (Teensy pin 5) -> GSCLK (TLC pin 18)
#define GSCLK_PIN 5
#define GSCLK_PORT 5
#define GSCLK_DDR 5
#endif

9
pinouts/chip_includes.h
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@@ -22,7 +22,9 @@
/** \file
Includes the chip-specfic defaults and pin definitions. */
#ifdef __AVR__
#include <avr/io.h>
#endif
#ifndef PB0
#define PB0 PORTB0
@@ -110,6 +112,13 @@
/* Teensy++ 2.0 */
#include "Teensypp_xxx6.h"
#elif defined (__MK20DX128__) \
|| defined (__MK20DX256__)
/* Teensy 3.0 & 3.1 */
#include "Teensy_KinetisK20.h"
#else
#error "Unknown Chip!"
#endif

24
pinouts/pin_functions.h Normal file
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@@ -0,0 +1,24 @@
#ifndef TLC_pin_functions_h
#define TLC_pin_functions_h
#if defined(__AVR__)
#define pulse_pin(port, pin) port |= _BV(pin); port &= ~_BV(pin)
#define set_pin(port, pin) port |= _BV(pin)
#define clear_pin(port, pin) port &= ~_BV(pin)
#define output_pin(ddr, pin) ddr |= _BV(pin)
#define pullup_pin(ddr, port, pin) ddr &= ~_BV(pin); port |= _BV(pin)
#elif defined(TEENSYDUINO)
#define pulse_pin(port, pin) digitalWriteFast(pin, LOW); digitalWriteFast(pin, HIGH)
#define set_pin(port, pin) digitalWriteFast(pin, HIGH)
#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)
#else
#define pulse_pin(port, pin) digitalWrite(pin, LOW); digitalWrite(pin, HIGH)
#define set_pin(port, pin) digitalWrite(pin, HIGH)
#define clear_pin(port, pin) digitalWrite(pin, LOW)
#define output_pin(ddr, pin) pinMode(pin, OUTPUT)
#define pullup_pin(ddr, port, pin) pinMode(pin, INPUT_PULLUP)
#endif
#endif

8
tlc_progmem_utils.h
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@@ -23,11 +23,8 @@
PROGMEM utility functions for setting grayscale or dot correction data
from PROGMEM. See the UsingProgmem Example for an example. */
#include <avr/pgmspace.h>
#include <avr/io.h>
#include "tlc_config.h"
#include "Tlc5940.h"
#include "pinouts/pin_functions.h"
void tlc_setGSfromProgmem(prog_uint8_t *gsArray);
#if VPRG_ENABLED
@@ -115,8 +112,7 @@ void tlc_setDCfromProgmem(prog_uint8_t *dcArray)
while (p < dcArrayEnd) {
tlc_shift8(pgm_read_byte(p++));
}
XLAT_PORT |= _BV(XLAT_PIN);
XLAT_PORT &= ~_BV(XLAT_PIN);
pulse_pin(XLAT_PORT, XLAT_PIN);
tlc_dcModeStop();
}