Browse Source
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.pull/1/head
Stephanie
9 years ago
committed by
Scott Lahteine
Scott Lahteine
7 changed files with 365 additions and 2 deletions
@ -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
|
|||
@ -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 |
|||
|
|||
@ -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 |
|||
Loading…
Reference in new issue