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Add support for Printrboard RevF

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The PrintrBoard Rev F utilizes a mcp4728 DAC to set motor current. Printrbot's implementation utilizes 2 new M-codes to set and write the DAC settings to the DAC EEPROM: `M909` (Read DAC) and `M910` (Write DAC). `M907` is re-used to set value, `M908` for direct control.

The Pins file for the RevF board is included.
This commit is contained in:
Stephanie
2016-03-10 14:33:53 -08:00
committed by Scott Lahteine
parent 7f2375ab46
commit 6843b78f99
7 changed files with 365 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
Marlin/Makefile
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@@ -163,6 +163,9 @@ MCU ?= at90usb1286
else ifeq ($(HARDWARE_MOTHERBOARD),81)
HARDWARE_VARIANT ?= Teensy
MCU ?= at90usb1286
else ifeq ($(HARDWARE_MOTHERBOARD),811)
HARDWARE_VARIANT ?= Teensy
MCU ?= at90usb1286
else ifeq ($(HARDWARE_MOTHERBOARD),82)
HARDWARE_VARIANT ?= Teensy
MCU ?= at90usb646
@@ -287,7 +290,7 @@ CXXSRC = WMath.cpp WString.cpp Print.cpp Marlin_main.cpp \
SdFile.cpp SdVolume.cpp planner.cpp stepper.cpp \
temperature.cpp cardreader.cpp configuration_store.cpp \
watchdog.cpp SPI.cpp servo.cpp Tone.cpp ultralcd.cpp digipot_mcp4451.cpp \
vector_3.cpp qr_solve.cpp buzzer.cpp
dac_mcp4728.cpp vector_3.cpp qr_solve.cpp buzzer.cpp
ifeq ($(LIQUID_TWI2), 0)
CXXSRC += LiquidCrystal.cpp
else

1
Marlin/boards.h
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@@ -40,6 +40,7 @@
#define BOARD_TEENSYLU 8 // Teensylu
#define BOARD_RUMBA 80 // Rumba
#define BOARD_PRINTRBOARD 81 // Printrboard (AT90USB1286)
#define BOARD_PRINTRBOARD_REVF 811 // Printrboard Revision F (AT90USB1286)
#define BOARD_BRAINWAVE 82 // Brainwave (AT90USB646)
#define BOARD_SAV_MKI 83 // SAV Mk-I (AT90USB1286)
#define BOARD_TEENSY2 84 // Teensy++2.0 (AT90USB1286) - CLI compile: DEFINES=AT90USBxx_TEENSYPP_ASSIGNMENTS HARDWARE_MOTHERBOARD=84 make

115
Marlin/dac_mcp4728.cpp Normal file
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@@ -0,0 +1,115 @@
/*
mcp4728.cpp - Arduino library for MicroChip MCP4728 I2C D/A converter
For implementation details, please take a look at the datasheet http://ww1.microchip.com/downloads/en/DeviceDoc/22187a.pdf
For discussion and feedback, please go to http://arduino.cc/forum/index.php/topic,51842.0.html
*/
/* _____PROJECT INCLUDES_____________________________________________________ */
#include "dac_mcp4728.h"
#if ENABLED(DAC_STEPPER_CURRENT)
// Used Global variables
uint16_t mcp4728_values[4];
/*
Begin I2C, get current values (input register and eeprom) of mcp4728
*/
void mcp4728_init() {
Wire.begin();
Wire.requestFrom(int(DAC_DEV_ADDRESS), 24);
while(Wire.available()) {
int deviceID = Wire.receive();
int hiByte = Wire.receive();
int loByte = Wire.receive();
int isEEPROM = (deviceID & 0B00001000) >> 3;
int channel = (deviceID & 0B00110000) >> 4;
if (isEEPROM != 1) {
mcp4728_values[channel] = word((hiByte & 0B00001111), loByte);
}
}
}
/*
Write input resister value to specified channel using fastwrite method.
Channel : 0-3, Values : 0-4095
*/
uint8_t mcp4728_analogWrite(uint8_t channel, uint16_t value) {
mcp4728_values[channel] = value;
return mcp4728_fastWrite();
}
/*
Write all input resistor values to EEPROM using SequencialWrite method.
This will update both input register and EEPROM value
This will also write current Vref, PowerDown, Gain settings to EEPROM
*/
uint8_t mcp4728_eepromWrite() {
Wire.beginTransmission(DAC_DEV_ADDRESS);
Wire.send(SEQWRITE);
for (uint8_t channel=0; channel <= 3; channel++) {
Wire.send(DAC_STEPPER_VREF << 7 | 0 << 5 | DAC_STEPPER_GAIN << 4 | highByte(mcp4728_values[channel]));
Wire.send(lowByte(mcp4728_values[channel]));
}
return Wire.endTransmission();
}
/*
Write Voltage reference setting to all input regiters
*/
uint8_t mcp4728_setVref_all(uint8_t value) {
Wire.beginTransmission(DAC_DEV_ADDRESS);
Wire.send(VREFWRITE | value << 3 | value << 2 | value << 1 | value);
return Wire.endTransmission();
}
/*
Write Gain setting to all input regiters
*/
uint8_t mcp4728_setGain_all(uint8_t value) {
Wire.beginTransmission(DAC_DEV_ADDRESS);
Wire.send(GAINWRITE | value << 3 | value << 2 | value << 1 | value);
return Wire.endTransmission();
}
/*
Return Input Regiter value
*/
uint16_t mcp4728_getValue(uint8_t channel) { return mcp4728_values[channel]; }
/*
// Steph: Might be useful in the future
// Return Vout
uint16_t mcp4728_getVout(uint8_t channel) {
uint32_t vref = 2048;
uint32_t vOut = (vref * mcp4728_values[channel] * (_DAC_STEPPER_GAIN + 1)) / 4096;
if (vOut > defaultVDD) vOut = defaultVDD;
return vOut;
}
*/
/*
FastWrite input register values - All DAC ouput update. refer to DATASHEET 5.6.1
DAC Input and PowerDown bits update.
No EEPROM update
*/
uint8_t mcp4728_fastWrite() {
Wire.beginTransmission(DAC_DEV_ADDRESS);
for (uint8_t channel=0; channel <= 3; channel++) {
Wire.send(highByte(mcp4728_values[channel]));
Wire.send(lowByte(mcp4728_values[channel]));
}
return Wire.endTransmission();
}
/*
Common function for simple general commands
*/
uint8_t mcp4728_simpleCommand(byte simpleCommand) {
Wire.beginTransmission(GENERALCALL);
Wire.send(simpleCommand);
return Wire.endTransmission();
}
#endif // DAC_STEPPER_CURRENT

44
Marlin/dac_mcp4728.h Normal file
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@@ -0,0 +1,44 @@
/**
Arduino library for MicroChip MCP4728 I2C D/A converter.
*/
#ifndef mcp4728_h
#define mcp4728_h
#include "Configuration.h"
#include "Configuration_adv.h"
#if ENABLED(DAC_STEPPER_CURRENT)
#include "WProgram.h"
#include "Wire.h"
//#include <Wire.h>
#define defaultVDD 5000
#define BASE_ADDR 0x60
#define RESET 0B00000110
#define WAKE 0B00001001
#define UPDATE 0B00001000
#define MULTIWRITE 0B01000000
#define SINGLEWRITE 0B01011000
#define SEQWRITE 0B01010000
#define VREFWRITE 0B10000000
#define GAINWRITE 0B11000000
#define POWERDOWNWRITE 0B10100000
#define GENERALCALL 0B0000000
#define GAINWRITE 0B11000000
// This is taken from the original lib, makes it easy to edit if needed
#define DAC_DEV_ADDRESS (BASE_ADDR | 0x00)
void mcp4728_init();
uint8_t mcp4728_analogWrite(uint8_t channel, uint16_t value);
uint8_t mcp4728_eepromWrite();
uint8_t mcp4728_setVref_all(uint8_t value);
uint8_t mcp4728_setGain_all(uint8_t value);
uint16_t mcp4728_getValue(uint8_t channel);
uint8_t mcp4728_fastWrite();
uint8_t mcp4728_simpleCommand(byte simpleCommand);
#endif
#endif

2
Marlin/pins.h
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@@ -77,6 +77,8 @@
#include "pins_RUMBA.h"
#elif MB(PRINTRBOARD)
#include "pins_PRINTRBOARD.h"
#elif MB(PRINTRBOARD_REVF)
#include "pins_PRINTRBOARD_REVF.h"
#elif MB(BRAINWAVE)
#include "pins_BRAINWAVE.h"
#elif MB(BRAINWAVE_PRO)

134
Marlin/pins_PRINTRBOARD_REVF.h Normal file
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@@ -0,0 +1,134 @@
/**
* Printrboard pin assignments (AT90USB1286)
* Requires the Teensyduino software with Teensy++ 2.0 selected in Arduino IDE!
* http://www.pjrc.com/teensy/teensyduino.html
* See http://reprap.org/wiki/Printrboard for more info
*/
#ifndef __AVR_AT90USB1286__
#error Oops! Make sure you have 'Teensy++ 2.0' selected from the 'Tools -> Boards' menu.
#endif
#if ENABLED(AT90USBxx_TEENSYPP_ASSIGNMENTS) // use Teensyduino Teensy++2.0 pin assignments instead of Marlin traditional.
#error These Printrboard assignments depend on traditional Marlin assignments, not AT90USBxx_TEENSYPP_ASSIGNMENTS in fastio.h
#endif
#define LARGE_FLASH true
#define X_STEP_PIN 0
#define X_DIR_PIN 1
#define X_ENABLE_PIN 39
#define Y_STEP_PIN 2
#define Y_DIR_PIN 3
#define Y_ENABLE_PIN 38
#define Z_STEP_PIN 4
#define Z_DIR_PIN 5
#define Z_ENABLE_PIN 23
#define E0_STEP_PIN 6
#define E0_DIR_PIN 7
#define E0_ENABLE_PIN 19
#define HEATER_0_PIN 21 // Extruder
#define HEATER_1_PIN 46
#define HEATER_2_PIN 47
#define HEATER_BED_PIN 20
// If soft or fast PWM is off then use Teensyduino pin numbering, Marlin
// fastio pin numbering otherwise
#if ENABLED(FAN_SOFT_PWM) || ENABLED(FAST_PWM_FAN)
#define FAN_PIN 22
#else
#define FAN_PIN 16
#endif
#define X_STOP_PIN 35
#define Y_STOP_PIN 12
#define Z_STOP_PIN 36
#define TEMP_0_PIN 1 // Extruder / Analog pin numbering
#define TEMP_BED_PIN 0 // Bed / Analog pin numbering
#if ENABLED(FILAMENT_SENSOR)
#define FILWIDTH_PIN 2
#endif
#define TEMP_1_PIN -1
#define TEMP_2_PIN -1
////LCD Pin Setup////
#define SDPOWER -1
#define SDSS 20 // Teensylu pin mapping
#define LED_PIN -1
#define PS_ON_PIN -1
#define KILL_PIN -1
#define ALARM_PIN -1
// uncomment to enable an I2C based DAC like on the Printrboard REVF
#define DAC_STEPPER_CURRENT
// Number of channels available for DAC, For Printrboar REVF there are 4
#define DAC_STEPPER_ORDER {3,2,1,0}
#define DAC_STEPPER_SENSE 0.11
#define DAC_STEPPER_ADDRESS 0
#define DAC_STEPPER_MAX 3520
#define DAC_STEPPER_VREF 1 //internal Vref, gain 1x = 2.048V
#define DAC_STEPPER_GAIN 0
#if DISABLED(SDSUPPORT)
// these pins are defined in the SD library if building with SD support
#define SCK_PIN 9
#define MISO_PIN 11
#define MOSI_PIN 10
#endif
#if ENABLED(ULTRA_LCD)
#define BEEPER_PIN -1
#define LCD_PINS_RS 9
#define LCD_PINS_ENABLE 8
#define LCD_PINS_D4 7
#define LCD_PINS_D5 6
#define LCD_PINS_D6 5
#define LCD_PINS_D7 4
#define BTN_EN1 16
#define BTN_EN2 17
#define BTN_ENC 18//the click
#define BLEN_C 2
#define BLEN_B 1
#define BLEN_A 0
#define SD_DETECT_PIN -1
//encoder rotation values
#define encrot0 0
#define encrot1 2
#define encrot2 3
#define encrot3 1
#endif
#if ENABLED(VIKI2) || ENABLED(miniVIKI)
#define BEEPER_PIN 32 //FastIO
// Pins for DOGM SPI LCD Support
#define DOGLCD_A0 42 //Non-FastIO
#define DOGLCD_CS 43 //Non-FastIO
#define LCD_SCREEN_ROT_180
//The encoder and click button (FastIO Pins)
#define BTN_EN1 26
#define BTN_EN2 27
#define BTN_ENC 47 //the click switch
#define SDSS 45
#define SD_DETECT_PIN -1 // FastIO (Manual says 72 I'm not certain cause I can't test)
#if ENABLED(TEMP_STAT_LEDS)
#define STAT_LED_RED 12 //Non-FastIO
#define STAT_LED_BLUE 10 //Non-FastIO
#endif
#endif

66
Marlin/stepper.cpp
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@@ -30,6 +30,7 @@
#include "language.h"
#include "cardreader.h"
#include "speed_lookuptable.h"
#include "dac_mcp4728.h"
#if HAS_DIGIPOTSS
#include <SPI.h>
#endif
@@ -1224,9 +1225,72 @@ void digipot_current(uint8_t driver, int current) {
#else
UNUSED(driver);
UNUSED(current);
#endif
#endif
}
#if ENABLED(DAC_STEPPER_CURRENT)
bool dac_present = false;
const uint8_t dac_order[NUM_AXIS] = DAC_STEPPER_ORDER;
int dac_init() {
mcp4728_init();
if (mcp4728_simpleCommand(RESET)) return -1;
dac_present = true;
mcp4728_setVref_all(DAC_STEPPER_VREF);
mcp4728_setGain_all(DAC_STEPPER_GAIN);
return 0;
}
void dac_current_percent(uint8_t channel, float val) {
if (!dac_present) return;
NOMORE(val, 100);
mcp4728_analogWrite(dac_order[channel], val * DAC_STEPPER_MAX / 100);
mcp4728_simpleCommand(UPDATE);
}
void dac_current_raw(uint8_t channel, uint16_t val) {
if (!dac_present) return;
NOMORE(val, DAC_STEPPER_MAX);
mcp4728_analogWrite(dac_order[channel], val);
mcp4728_simpleCommand(UPDATE);
}
static float dac_perc(int8_t n) { return 100.0 * mcp4728_getValue(dac_order[n]) / DAC_STEPPER_MAX; }
static float dac_amps(int8_t n) { return ((2.048 * mcp4728_getValue(dac_order[n])) / 4096.0) / (8.0 * DAC_STEPPER_SENSE); }
void dac_print_values() {
if (!dac_present) return;
SERIAL_ECHO_START;
SERIAL_ECHOLNPGM("Stepper current values in % (Amps):");
SERIAL_ECHO_START;
SERIAL_ECHOPAIR(" X:", dac_perc(0));
SERIAL_ECHOPAIR(" (", dac_amps(0));
SERIAL_ECHOPAIR(") Y:", dac_perc(1));
SERIAL_ECHOPAIR(" (", dac_amps(1));
SERIAL_ECHOPAIR(") Z:", dac_perc(2));
SERIAL_ECHOPAIR(" (", dac_amps(2));
SERIAL_ECHOPAIR(") E:", dac_perc(3));
SERIAL_ECHOPAIR(" (", dac_amps(3));
SERIAL_ECHOLN(")");
}
void dac_commit_eeprom() {
if (!dac_present) return;
mcp4728_eepromWrite();
}
#endif // DAC_STEPPER_CURRENT
void microstep_init() {
#if HAS_MICROSTEPS_E1
pinMode(E1_MS1_PIN, OUTPUT);