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Fix: set digipot mcp4018 Vrefmax to 1.666V

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master
Paweł Stawicki 8 years ago committed by Scott Lahteine
parent ebe6719e12
commit 1e47c17b46
3 changed files with 118 additions and 14 deletions
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8
Marlin/digipot_mcp4018.cpp
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@ -34,17 +34,17 @@
#define DIGIPOT_I2C_ADDRESS 0x2F
#define DIGIPOT_A4988_Rsx 0.250
#define DIGIPOT_A4988_Vrefmax 5.0
#define DIGIPOT_A4988_Vrefmax 1.666
#define DIGIPOT_A4988_MAX_VALUE 127
#define DIGIPOT_A4988_Itripmax(Vref) ((Vref)/(8.0*DIGIPOT_A4988_Rsx))
#define DIGIPOT_A4988_FACTOR ((DIGIPOT_A4988_MAX_VALUE)/DIGIPOT_A4988_Itripmax(DIGIPOT_A4988_Vrefmax))
//TODO: MAX_CURRENT -0.5A ?? (currently set to 2A, max possible current 2.5A)
#define DIGIPOT_A4988_MAX_CURRENT (DIGIPOT_A4988_Itripmax(DIGIPOT_A4988_Vrefmax) - 0.5)
#define DIGIPOT_A4988_MAX_CURRENT 2.0
static byte current_to_wiper(const float current) {
return byte(CEIL(float(DIGIPOT_A4988_FACTOR) * current));
const int16_t value = ceil(float(DIGIPOT_A4988_FACTOR) * current);
return byte(constrain(value, 0, DIGIPOT_A4988_MAX_VALUE));
}
const uint8_t sda_pins[DIGIPOT_I2C_NUM_CHANNELS] = {

29
Marlin/example_configurations/wt150/Configuration.h
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@ -58,8 +58,8 @@
//===========================================================================
//============================= DELTA Printer ===============================
//===========================================================================
// For Delta printers start with one of the configuration files in the
// example_configurations/delta directory and customize for your machine.
// For a Delta printer replace the configuration files with the files in the
// example_configurations/delta directory.
//
//===========================================================================
@ -311,13 +311,13 @@
// is more than PID_FUNCTIONAL_RANGE then the PID will be shut off and the heater will be set to min/max.
#define K1 0.95 //smoothing factor within the PID
// If you are using a pre-configured hotend then you can use one of the value sets by uncommenting it
//WT150, based on: M303 E0 S220 C8
#define DEFAULT_Kp 22.10
#define DEFAULT_Ki 1.10
#define DEFAULT_Kd 110.78
// If you are using a pre-configured hotend then you can use one of the value sets by uncommenting it
// Ultimaker
//#define DEFAULT_Kp 22.2
//#define DEFAULT_Ki 1.08
@ -534,6 +534,7 @@
#define DEFAULT_ZJERK 0.4
#define DEFAULT_EJERK 5.0
//===========================================================================
//============================= Z Probe Options =============================
//===========================================================================
@ -575,7 +576,7 @@
* Probe Type
*
* Allen Key Probes, Servo Probes, Z-Sled Probes, FIX_MOUNTED_PROBE, etc.
* Activate one of these to use Auto Bed Leveling below.
* You must activate one of these to use Auto Bed Leveling below.
*/
/**
@ -1492,7 +1493,23 @@
//define PCA9632 PWM LED driver Support
//#define PCA9632
// Support for an RGB LED using 3 separate pins with optional PWM
/**
* RGB LED / LED Strip Control
*
* Enable support for an RGB LED connected to 5V digital pins, or
* an RGB Strip connected to MOSFETs controlled by digital pins.
*
* Adds the M150 command to set the LED (or LED strip) color.
* If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
* luminance values can be set from 0 to 255.
*
* *** CAUTION ***
* LED Strips require a MOFSET Chip between PWM lines and LEDs,
* as the Arduino cannot handle the current the LEDs will require.
* Failure to follow this precaution can destroy your Arduino!
* *** CAUTION ***
*
*/
//#define RGB_LED
//#define RGBW_LED
#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)

95
Marlin/example_configurations/wt150/Configuration_adv.h
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@ -428,7 +428,7 @@
#define DIGIPOT_MCP4018 // Requires library from https://github.com/stawel/SlowSoftI2CMaster
#define DIGIPOT_I2C_NUM_CHANNELS 5 // 5DPRINT: 4 AZTEEG_X3_PRO: 8
// Actual motor currents in Amps, need as many here as DIGIPOT_I2C_NUM_CHANNELS
#define DIGIPOT_I2C_MOTOR_CURRENTS {0.68, 0.68, 1.18, 1.27, 1.27}
#define DIGIPOT_I2C_MOTOR_CURRENTS {0.22, 0.22, 0.39, 0.42, 0.42}
//===========================================================================
//=============================Additional Features===========================
@ -670,6 +670,10 @@
#define UBL_MESH_MAX_X (X_MAX_POS - (UBL_MESH_INSET))
#define UBL_MESH_MIN_Y (Y_MIN_POS + UBL_MESH_INSET)
#define UBL_MESH_MAX_Y (Y_MAX_POS - (UBL_MESH_INSET))
// If this is defined, the currently active mesh will be saved in the
// current slot on M500.
#define UBL_SAVE_ACTIVE_ON_M500
#endif
// @section extras
@ -795,7 +799,7 @@
// Longer length for bowden printers to unload filament from whole bowden tube,
// shorter length for printers without bowden to unload filament from extruder only,
// 0 to disable unloading for manual unloading
#define FILAMENT_CHANGE_LOAD_FEEDRATE 10 // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
#define FILAMENT_CHANGE_LOAD_FEEDRATE 6 // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
#define FILAMENT_CHANGE_LOAD_LENGTH 0 // Load filament length over hotend in mm
// Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
// Short or zero length for printers without bowden where loading is not used
@ -1260,8 +1264,91 @@
#define USER_DESC_4 "Heat Bed/Home/Level"
#define USER_GCODE_4 "M140 S" STRINGIFY(PREHEAT_2_TEMP_BED) "\nG28\nG29"
//#define USER_DESC_5 "Home & Info"
//#define USER_GCODE_5 "G28\nM503"
#define USER_DESC_5 "Home & Info"
#define USER_GCODE_5 "G28\nM503"
#endif
//===========================================================================
//============================ I2C Encoder Settings =========================
//===========================================================================
/**
* I2C position encoders for closed loop control.
* Developed by Chris Barr at Aus3D.
*
* Wiki: http://wiki.aus3d.com.au/Magnetic_Encoder
* Github: https://github.com/Aus3D/MagneticEncoder
*
* Supplier: http://aus3d.com.au/magnetic-encoder-module
* Alternative Supplier: http://reliabuild3d.com/
*
* Reilabuild encoders have been modified to improve reliability.
*/
//#define I2C_POSITION_ENCODERS
#if ENABLED(I2C_POSITION_ENCODERS)
#define I2CPE_ENCODER_CNT 1 // The number of encoders installed; max of 5
// encoders supported currently.
#define I2CPE_ENC_1_ADDR I2CPE_PRESET_ADDR_X // I2C address of the encoder. 30-200.
#define I2CPE_ENC_1_AXIS X_AXIS // Axis the encoder module is installed on. <X|Y|Z|E>_AXIS.
#define I2CPE_ENC_1_TYPE I2CPE_ENC_TYPE_LINEAR // Type of encoder: I2CPE_ENC_TYPE_LINEAR -or-
// I2CPE_ENC_TYPE_ROTARY.
#define I2CPE_ENC_1_TICKS_UNIT 2048 // 1024 for magnetic strips with 2mm poles; 2048 for
// 1mm poles. For linear encoders this is ticks / mm,
// for rotary encoders this is ticks / revolution.
//#define I2CPE_ENC_1_TICKS_REV (16 * 200) // Only needed for rotary encoders; number of stepper
// steps per full revolution (motor steps/rev * microstepping)
//#define I2CPE_ENC_1_INVERT // Invert the direction of axis travel.
#define I2CPE_ENC_1_EC_METHOD I2CPE_ECM_NONE // Type of error error correction.
#define I2CPE_ENC_1_EC_THRESH 0.10 // Threshold size for error (in mm) above which the
// printer will attempt to correct the error; errors
// smaller than this are ignored to minimize effects of
// measurement noise / latency (filter).
#define I2CPE_ENC_2_ADDR I2CPE_PRESET_ADDR_Y // Same as above, but for encoder 2.
#define I2CPE_ENC_2_AXIS Y_AXIS
#define I2CPE_ENC_2_TYPE I2CPE_ENC_TYPE_LINEAR
#define I2CPE_ENC_2_TICKS_UNIT 2048
//#define I2CPE_ENC_2_TICKS_REV (16 * 200)
//#define I2CPE_ENC_2_INVERT
#define I2CPE_ENC_2_EC_METHOD I2CPE_ECM_NONE
#define I2CPE_ENC_2_EC_THRESH 0.10
#define I2CPE_ENC_3_ADDR I2CPE_PRESET_ADDR_Z // Encoder 3. Add additional configuration options
#define I2CPE_ENC_3_AXIS Z_AXIS // as above, or use defaults below.
#define I2CPE_ENC_4_ADDR I2CPE_PRESET_ADDR_E // Encoder 4.
#define I2CPE_ENC_4_AXIS E_AXIS
#define I2CPE_ENC_5_ADDR 34 // Encoder 5.
#define I2CPE_ENC_5_AXIS E_AXIS
// Default settings for encoders which are enabled, but without settings configured above.
#define I2CPE_DEF_TYPE I2CPE_ENC_TYPE_LINEAR
#define I2CPE_DEF_ENC_TICKS_UNIT 2048
#define I2CPE_DEF_TICKS_REV (16 * 200)
#define I2CPE_DEF_EC_METHOD I2CPE_ECM_NONE
#define I2CPE_DEF_EC_THRESH 0.1
//#define I2CPE_ERR_THRESH_ABORT 100.0 // Threshold size for error (in mm) error on any given
// axis after which the printer will abort. Comment out to
// disable abort behaviour.
#define I2CPE_TIME_TRUSTED 10000 // After an encoder fault, there must be no further fault
// for this amount of time (in ms) before the encoder
// is trusted again.
/**
* Position is checked every time a new command is executed from the buffer but during long moves,
* this setting determines the minimum update time between checks. A value of 100 works well with
* error rolling average when attempting to correct only for skips and not for vibration.
*/
#define I2CPE_MIN_UPD_TIME_MS 100 // Minimum time in miliseconds between encoder checks.
// Use a rolling average to identify persistant errors that indicate skips, as opposed to vibration and noise.
#define I2CPE_ERR_ROLLING_AVERAGE
#endif
//===========================================================================

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