Move M907-M910 to cpp

2017-09-17 18:45:21 -05:00
parent 2e89685154
commit 6e0503eab2
9 changed files with 101 additions and 58 deletions
--- a/Marlin/src/feature/digipot/digipot_mcp4451.cpp
+++ b/Marlin/src/feature/digipot/digipot_mcp4451.cpp
@@ -0,0 +1,74 @@
+/**
+ * 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/>.
+ *
+ */
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(DIGIPOT_I2C) && DISABLED(DIGIPOT_MCP4018)
+
+#include "Stream.h"
+#include "utility/twi.h"
+#include <Wire.h>
+
+// Settings for the I2C based DIGIPOT (MCP4451) on Azteeg X3 Pro
+#if MB(5DPRINT)
+  #define DIGIPOT_I2C_FACTOR 117.96
+  #define DIGIPOT_I2C_MAX_CURRENT 1.736
+#else
+  #define DIGIPOT_I2C_FACTOR 106.7
+  #define DIGIPOT_I2C_MAX_CURRENT 2.5
+#endif
+
+static byte current_to_wiper(const float current) {
+  return byte(CEIL(float((DIGIPOT_I2C_FACTOR * current))));
+}
+
+static void i2c_send(const byte addr, const byte a, const byte b) {
+  Wire.beginTransmission(addr);
+  Wire.write(a);
+  Wire.write(b);
+  Wire.endTransmission();
+}
+
+// This is for the MCP4451 I2C based digipot
+void digipot_i2c_set_current(const uint8_t channel, const float current) {
+  // these addresses are specific to Azteeg X3 Pro, can be set to others,
+  // In this case first digipot is at address A0=0, A1= 0, second one is at A0=0, A1= 1
+  const byte addr = channel < 4 ? 0x2C : 0x2E; // channel 0-3 vs 4-7
+
+  // Initial setup
+  i2c_send(addr, 0x40, 0xFF);
+  i2c_send(addr, 0xA0, 0xFF);
+
+  // Set actual wiper value
+  byte addresses[4] = { 0x00, 0x10, 0x60, 0x70 };
+  i2c_send(addr, addresses[channel & 0x3], current_to_wiper(min((float) max(current, 0.0f), DIGIPOT_I2C_MAX_CURRENT)));
+}
+
+void digipot_i2c_init() {
+  static const float digipot_motor_current[] PROGMEM = DIGIPOT_I2C_MOTOR_CURRENTS;
+  Wire.begin();
+  // setup initial currents as defined in Configuration_adv.h
+  for (uint8_t i = 0; i < COUNT(digipot_motor_current); i++)
+    digipot_i2c_set_current(i, pgm_read_float(&digipot_motor_current[i]));
+}
+
+#endif // DIGIPOT_I2C