Rigidbot V2 support - has MCP4728 digipot

Marlin/boards.h

@@ -40,6 +40,7 @@
 #define BOARD_RAMPS_13_SF       38   // RAMPS 1.3 (Power outputs: Spindle, Controller Fan)
 #define BOARD_FELIX2            37   // Felix 2.0+ Electronics Board (RAMPS like)
 #define BOARD_RIGIDBOARD        42   // Invent-A-Part RigidBoard
+#define BOARD_RIGIDBOARD_V2     52   // Invent-A-Part RigidBoard V2
 #define BOARD_RAMPS_14_EFB      43   // RAMPS 1.4 (Power outputs: Hotend, Fan, Bed)
 #define BOARD_RAMPS_14_EEB      44   // RAMPS 1.4 (Power outputs: Hotend0, Hotend1, Bed)
 #define BOARD_RAMPS_14_EFF      45   // RAMPS 1.4 (Power outputs: Hotend, Fan0, Fan1)

Marlin/dac_mcp4728.cpp

@@ -43,9 +43,9 @@ 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 deviceID = Wire.read();
+    int hiByte = Wire.read();
+    int loByte = Wire.read();
 
     int isEEPROM = (deviceID & 0B00001000) >> 3;
     int channel = (deviceID & 0B00110000) >> 4;
@@ -70,10 +70,10 @@ uint8_t mcp4728_analogWrite(uint8_t channel, uint16_t value) {
  */
 uint8_t mcp4728_eepromWrite() {
   Wire.beginTransmission(DAC_DEV_ADDRESS);
-  Wire.send(SEQWRITE);
+  Wire.write(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]));
+    Wire.write(DAC_STEPPER_VREF << 7 | 0 << 5 | DAC_STEPPER_GAIN << 4 | highByte(mcp4728_values[channel]));
+    Wire.write(lowByte(mcp4728_values[channel]));
   }
   return Wire.endTransmission();
 }
@@ -83,15 +83,15 @@ uint8_t mcp4728_eepromWrite() {
  */
 uint8_t mcp4728_setVref_all(uint8_t value) {
   Wire.beginTransmission(DAC_DEV_ADDRESS);
-  Wire.send(VREFWRITE | value << 3 | value << 2 | value << 1 | value);
+  Wire.write(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);
+  Wire.write(GAINWRITE | value << 3 | value << 2 | value << 1 | value);
   return Wire.endTransmission();
 }
 
@@ -120,8 +120,8 @@ uint16_t mcp4728_getVout(uint8_t channel) {
 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]));
+    Wire.write(highByte(mcp4728_values[channel]));
+    Wire.write(lowByte(mcp4728_values[channel]));
   }
   return Wire.endTransmission();
 }
@@ -131,7 +131,7 @@ uint8_t mcp4728_fastWrite() {
  */
 uint8_t mcp4728_simpleCommand(byte simpleCommand) {
   Wire.beginTransmission(GENERALCALL);
-  Wire.send(simpleCommand);
+  Wire.write(simpleCommand);
   return Wire.endTransmission();
 }
 

Marlin/dac_mcp4728.h

@@ -31,9 +31,7 @@
 #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
@@ -50,7 +48,9 @@
 #define GAINWRITE 0B11000000
 
 // This is taken from the original lib, makes it easy to edit if needed
-#define DAC_DEV_ADDRESS (BASE_ADDR | 0x00)
+// DAC_OR_ADDRESS defined in pins_BOARD.h  file
+#define DAC_DEV_ADDRESS (BASE_ADDR | DAC_OR_ADDRESS)
+
 
 void mcp4728_init();
 uint8_t mcp4728_analogWrite(uint8_t channel, uint16_t value);

Marlin/example_configurations/RigidBot/Configuration.h

@@ -117,8 +117,11 @@
 
 // The following define selects which electronics board you have.
 // Please choose the name from boards.h that matches your setup
+// for Rigidbot version 1 : #define MOTHERBOARD BOARD_RIGIDBOARD
+// for Rigidbot Version 2 : #define MOTHERBOARD BOARD_RIGIDBOARD_V2
+
 #ifndef MOTHERBOARD
-  #define MOTHERBOARD BOARD_RIGIDBOARD
+  #define MOTHERBOARD BOARD_RIGIDBOARD_V2
 #endif
 
 // Optional custom name for your RepStrap or other custom machine

Marlin/pins.h

@@ -129,6 +129,8 @@
   #include "pins_MKS_BASE.h"
 #elif MB(RIGIDBOARD)
   #include "pins_RIGIDBOARD.h"
+#elif MB(RIGIDBOARD_V2)
+  #include "pins_RIGIDBOARD_V2.h"
 #elif MB(MEGACONTROLLER)
   #include "pins_MEGACONTROLLER.h"
 #elif MB(BQ_ZUM_MEGA_3D)

Marlin/pins_PRINTRBOARD_REVF.h

@@ -89,6 +89,7 @@
 #define DAC_STEPPER_MAX   3520
 #define DAC_STEPPER_VREF     1 //internal Vref, gain 1x = 2.048V
 #define DAC_STEPPER_GAIN     0
+#define DAC_OR_ADDRESS    0x00
 
 #if DISABLED(SDSUPPORT)
   // these pins are defined in the SD library if building with SD support

Marlin/pins_RIGIDBOARD_V2.h

@@ -0,0 +1,40 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * RIGIDBOARD V2 Arduino Mega with RAMPS v1.4 pin assignments
+ */
+
+#include "pins_RIGIDBOARD.h"
+
+// I2C based DAC like on the Printrboard REVF
+#define DAC_STEPPER_CURRENT
+// Channels available for DAC, For Rigidboard there are 4
+#define DAC_STEPPER_ORDER {0,1,2,3}
+
+#define DAC_STEPPER_SENSE    0.11
+#define DAC_STEPPER_ADDRESS  0
+#define DAC_STEPPER_MAX   5000
+#define DAC_STEPPER_VREF     1 //internal Vref, gain 1x = 2.048V
+#define DAC_STEPPER_GAIN     0
+#define DAC_DISABLE_PIN     42 //  set low to enable DAC
+#define DAC_OR_ADDRESS    0x01

Marlin/stepper_dac.cpp

@@ -51,6 +51,11 @@
   const uint8_t dac_order[NUM_AXIS] = DAC_STEPPER_ORDER;
 
   int dac_init() {
+    #if PIN_EXISTS(DAC_DISABLE)
+      pinMode(DAC_DISABLE_PIN, OUTPUT);
+      digitalWrite(DAC_DISABLE_PIN, LOW);  // set pin low to enable DAC
+    #endif
+
     mcp4728_init();
 
     if (mcp4728_simpleCommand(RESET)) return -1;