2017-06-09 14:06:23 +02:00
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/**
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* Marlin 3D Printer Firmware
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* Copyright (C) 2016, 2017 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef I2CPOSENC_H
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#define I2CPOSENC_H
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2017-09-06 13:28:32 +02:00
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#include "../inc/MarlinConfig.h"
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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#include "../module/planner.h"
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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#include <Wire.h>
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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//=========== Advanced / Less-Common Encoder Configuration Settings ==========
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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#define I2CPE_EC_THRESH_PROPORTIONAL // if enabled adjusts the error correction threshold
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// proportional to the current speed of the axis allows
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// for very small error margin at low speeds without
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// stuttering due to reading latency at high speeds
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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#define I2CPE_DEBUG // enable encoder-related debug serial echos
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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#define I2CPE_REBOOT_TIME 5000 // time we wait for an encoder module to reboot
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// after changing address.
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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#define I2CPE_MAG_SIG_GOOD 0
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#define I2CPE_MAG_SIG_MID 1
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#define I2CPE_MAG_SIG_BAD 2
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#define I2CPE_MAG_SIG_NF 255
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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#define I2CPE_REQ_REPORT 0
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#define I2CPE_RESET_COUNT 1
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#define I2CPE_SET_ADDR 2
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#define I2CPE_SET_REPORT_MODE 3
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#define I2CPE_CLEAR_EEPROM 4
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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#define I2CPE_LED_PAR_MODE 10
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#define I2CPE_LED_PAR_BRT 11
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#define I2CPE_LED_PAR_RATE 14
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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#define I2CPE_REPORT_DISTANCE 0
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#define I2CPE_REPORT_STRENGTH 1
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#define I2CPE_REPORT_VERSION 2
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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// Default I2C addresses
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#define I2CPE_PRESET_ADDR_X 30
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#define I2CPE_PRESET_ADDR_Y 31
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#define I2CPE_PRESET_ADDR_Z 32
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#define I2CPE_PRESET_ADDR_E 33
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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#define I2CPE_DEF_AXIS X_AXIS
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#define I2CPE_DEF_ADDR I2CPE_PRESET_ADDR_X
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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// Error event counter; tracks how many times there is an error exceeding a certain threshold
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#define I2CPE_ERR_CNT_THRESH 3.00
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#define I2CPE_ERR_CNT_DEBOUNCE_MS 2000
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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#if ENABLED(I2CPE_ERR_ROLLING_AVERAGE)
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#define I2CPE_ERR_ARRAY_SIZE 32
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2018-02-08 10:57:11 +01:00
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#define I2CPE_ERR_PRST_ARRAY_SIZE 10
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2017-09-06 13:28:32 +02:00
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#endif
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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// Error Correction Methods
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#define I2CPE_ECM_NONE 0
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#define I2CPE_ECM_MICROSTEP 1
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#define I2CPE_ECM_PLANNER 2
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#define I2CPE_ECM_STALLDETECT 3
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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// Encoder types
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#define I2CPE_ENC_TYPE_ROTARY 0
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#define I2CPE_ENC_TYPE_LINEAR 1
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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// Parser
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#define I2CPE_PARSE_ERR 1
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#define I2CPE_PARSE_OK 0
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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#define LOOP_PE(VAR) LOOP_L_N(VAR, I2CPE_ENCODER_CNT)
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#define CHECK_IDX() do{ if (!WITHIN(idx, 0, I2CPE_ENCODER_CNT - 1)) return; }while(0)
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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extern const char axis_codes[XYZE];
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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typedef union {
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volatile int32_t val = 0;
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uint8_t bval[4];
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} i2cLong;
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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class I2CPositionEncoder {
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2017-06-09 14:06:23 +02:00
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private:
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2017-06-09 17:22:49 +02:00
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AxisEnum encoderAxis = I2CPE_DEF_AXIS;
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2017-06-09 14:06:23 +02:00
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2017-06-09 17:22:49 +02:00
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uint8_t i2cAddress = I2CPE_DEF_ADDR,
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ecMethod = I2CPE_DEF_EC_METHOD,
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type = I2CPE_DEF_TYPE,
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H = I2CPE_MAG_SIG_NF; // Magnetic field strength
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2017-06-09 14:06:23 +02:00
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2017-06-09 17:22:49 +02:00
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int encoderTicksPerUnit = I2CPE_DEF_ENC_TICKS_UNIT,
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stepperTicks = I2CPE_DEF_TICKS_REV,
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errorCount = 0,
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errorPrev = 0;
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2017-06-09 14:06:23 +02:00
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2017-06-09 17:22:49 +02:00
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float ecThreshold = I2CPE_DEF_EC_THRESH;
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2017-06-09 14:06:23 +02:00
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2017-06-09 17:22:49 +02:00
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bool homed = false,
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trusted = false,
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2018-08-23 00:14:38 +02:00
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initialized = false,
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2017-06-09 17:22:49 +02:00
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active = false,
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invert = false,
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ec = true;
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2017-06-09 14:06:23 +02:00
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2017-11-04 21:26:29 +01:00
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int32_t zeroOffset = 0,
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2017-06-09 17:22:49 +02:00
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lastPosition = 0,
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position;
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2017-06-09 14:06:23 +02:00
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2017-06-09 17:22:49 +02:00
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millis_t lastPositionTime = 0,
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nextErrorCountTime = 0,
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lastErrorTime;
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2017-06-09 14:06:23 +02:00
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#if ENABLED(I2CPE_ERR_ROLLING_AVERAGE)
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2018-02-08 10:57:11 +01:00
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uint8_t errIdx = 0, errPrstIdx = 0;
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int err[I2CPE_ERR_ARRAY_SIZE] = { 0 },
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errPrst[I2CPE_ERR_PRST_ARRAY_SIZE] = { 0 };
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2017-06-09 14:06:23 +02:00
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#endif
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public:
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void init(const uint8_t address, const AxisEnum axis);
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2017-06-09 14:06:23 +02:00
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void reset();
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void update();
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void set_homed();
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2018-10-29 20:01:36 +01:00
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void set_unhomed();
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2017-06-09 14:06:23 +02:00
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2017-06-09 17:22:49 +02:00
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int32_t get_raw_count();
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2017-06-09 14:06:23 +02:00
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2017-06-09 17:22:49 +02:00
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FORCE_INLINE float mm_from_count(const int32_t count) {
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switch (type) {
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default: return -1;
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case I2CPE_ENC_TYPE_LINEAR:
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return count / encoderTicksPerUnit;
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case I2CPE_ENC_TYPE_ROTARY:
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2018-10-10 16:45:20 +02:00
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return (count * stepperTicks) / (encoderTicksPerUnit * planner.settings.axis_steps_per_mm[encoderAxis]);
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2017-06-09 17:22:49 +02:00
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}
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2017-06-09 14:06:23 +02:00
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}
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2017-06-09 17:22:49 +02:00
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FORCE_INLINE float get_position_mm() { return mm_from_count(get_position()); }
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2017-11-04 21:26:29 +01:00
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FORCE_INLINE int32_t get_position() { return get_raw_count() - zeroOffset; }
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2017-06-09 14:06:23 +02:00
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2017-06-09 17:22:49 +02:00
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int32_t get_axis_error_steps(const bool report);
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float get_axis_error_mm(const bool report);
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2017-06-09 14:06:23 +02:00
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2017-06-09 17:22:49 +02:00
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void calibrate_steps_mm(const uint8_t iter);
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2017-06-09 14:06:23 +02:00
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2017-06-09 17:22:49 +02:00
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bool passes_test(const bool report);
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2017-06-09 14:06:23 +02:00
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bool test_axis(void);
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FORCE_INLINE int get_error_count(void) { return errorCount; }
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2017-06-09 17:22:49 +02:00
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FORCE_INLINE void set_error_count(const int newCount) { errorCount = newCount; }
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2017-06-09 14:06:23 +02:00
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FORCE_INLINE uint8_t get_address() { return i2cAddress; }
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2017-06-09 17:22:49 +02:00
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FORCE_INLINE void set_address(const uint8_t addr) { i2cAddress = addr; }
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2017-06-09 14:06:23 +02:00
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FORCE_INLINE bool get_active(void) { return active; }
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2017-06-09 17:22:49 +02:00
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FORCE_INLINE void set_active(const bool a) { active = a; }
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2017-06-09 14:06:23 +02:00
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2017-06-09 17:22:49 +02:00
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FORCE_INLINE void set_inverted(const bool i) { invert = i; }
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2017-06-09 14:06:23 +02:00
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FORCE_INLINE AxisEnum get_axis() { return encoderAxis; }
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FORCE_INLINE bool get_ec_enabled() { return ec; }
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2017-06-09 17:22:49 +02:00
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FORCE_INLINE void set_ec_enabled(const bool enabled) { ec = enabled; }
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2017-06-09 14:06:23 +02:00
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FORCE_INLINE uint8_t get_ec_method() { return ecMethod; }
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2017-06-09 17:22:49 +02:00
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FORCE_INLINE void set_ec_method(const byte method) { ecMethod = method; }
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2017-06-09 14:06:23 +02:00
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FORCE_INLINE float get_ec_threshold() { return ecThreshold; }
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2017-06-09 17:22:49 +02:00
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FORCE_INLINE void set_ec_threshold(const float newThreshold) { ecThreshold = newThreshold; }
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2017-06-09 14:06:23 +02:00
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FORCE_INLINE int get_encoder_ticks_mm() {
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2017-06-09 17:22:49 +02:00
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switch (type) {
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default: return 0;
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case I2CPE_ENC_TYPE_LINEAR:
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return encoderTicksPerUnit;
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case I2CPE_ENC_TYPE_ROTARY:
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2018-10-10 16:45:20 +02:00
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return (int)((encoderTicksPerUnit / stepperTicks) * planner.settings.axis_steps_per_mm[encoderAxis]);
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2017-06-09 17:22:49 +02:00
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}
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2017-06-09 14:06:23 +02:00
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}
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FORCE_INLINE int get_ticks_unit() { return encoderTicksPerUnit; }
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2017-06-09 17:22:49 +02:00
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FORCE_INLINE void set_ticks_unit(const int ticks) { encoderTicksPerUnit = ticks; }
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2017-06-09 14:06:23 +02:00
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FORCE_INLINE uint8_t get_type() { return type; }
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2017-06-09 17:22:49 +02:00
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FORCE_INLINE void set_type(const byte newType) { type = newType; }
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2017-06-09 14:06:23 +02:00
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FORCE_INLINE int get_stepper_ticks() { return stepperTicks; }
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2017-06-09 17:22:49 +02:00
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FORCE_INLINE void set_stepper_ticks(const int ticks) { stepperTicks = ticks; }
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2017-09-06 13:28:32 +02:00
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};
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2017-06-09 14:06:23 +02:00
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2017-09-06 13:28:32 +02:00
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class I2CPositionEncodersMgr {
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2017-06-09 14:06:23 +02:00
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private:
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2017-06-09 17:22:49 +02:00
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static bool I2CPE_anyaxis;
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static uint8_t I2CPE_addr, I2CPE_idx;
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2017-06-09 14:06:23 +02:00
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public:
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2017-06-09 17:22:49 +02:00
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static void init(void);
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2017-06-09 14:06:23 +02:00
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// consider only updating one endoder per call / tick if encoders become too time intensive
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2017-06-09 17:22:49 +02:00
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static void update(void) { LOOP_PE(i) encoders[i].update(); }
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2017-06-09 14:06:23 +02:00
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2017-06-09 17:22:49 +02:00
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static void homed(const AxisEnum axis) {
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2017-06-09 14:06:23 +02:00
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LOOP_PE(i)
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if (encoders[i].get_axis() == axis) encoders[i].set_homed();
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}
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2018-10-29 20:01:36 +01:00
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static void unhomed(const AxisEnum axis) {
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LOOP_PE(i)
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if (encoders[i].get_axis() == axis) encoders[i].set_unhomed();
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}
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2017-06-09 17:22:49 +02:00
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static void report_position(const int8_t idx, const bool units, const bool noOffset);
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2017-06-09 14:06:23 +02:00
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2017-06-09 17:22:49 +02:00
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static void report_status(const int8_t idx) {
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CHECK_IDX();
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2017-09-06 13:28:32 +02:00
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SERIAL_ECHOPAIR("Encoder ", idx);
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2017-06-09 14:06:23 +02:00
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SERIAL_ECHOPGM(": ");
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encoders[idx].get_raw_count();
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encoders[idx].passes_test(true);
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}
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2017-06-09 17:22:49 +02:00
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static void report_error(const int8_t idx) {
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CHECK_IDX();
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2017-06-09 14:06:23 +02:00
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encoders[idx].get_axis_error_steps(true);
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}
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2017-06-09 17:22:49 +02:00
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static void test_axis(const int8_t idx) {
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CHECK_IDX();
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2017-06-09 14:06:23 +02:00
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encoders[idx].test_axis();
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}
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2017-06-09 17:22:49 +02:00
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static void calibrate_steps_mm(const int8_t idx, const int iterations) {
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CHECK_IDX();
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2017-06-09 14:06:23 +02:00
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encoders[idx].calibrate_steps_mm(iterations);
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}
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2017-06-09 17:22:49 +02:00
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static void change_module_address(const uint8_t oldaddr, const uint8_t newaddr);
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static void report_module_firmware(const uint8_t address);
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2017-06-09 14:06:23 +02:00
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2017-06-09 17:22:49 +02:00
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static void report_error_count(const int8_t idx, const AxisEnum axis) {
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CHECK_IDX();
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2017-06-09 14:06:23 +02:00
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SERIAL_ECHOPAIR("Error count on ", axis_codes[axis]);
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SERIAL_ECHOLNPAIR(" axis is ", encoders[idx].get_error_count());
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}
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2017-06-09 17:22:49 +02:00
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static void reset_error_count(const int8_t idx, const AxisEnum axis) {
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CHECK_IDX();
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2017-06-09 14:06:23 +02:00
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encoders[idx].set_error_count(0);
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SERIAL_ECHOPAIR("Error count on ", axis_codes[axis]);
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SERIAL_ECHOLNPGM(" axis has been reset.");
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}
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2017-06-09 17:22:49 +02:00
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static void enable_ec(const int8_t idx, const bool enabled, const AxisEnum axis) {
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CHECK_IDX();
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2017-06-09 14:06:23 +02:00
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encoders[idx].set_ec_enabled(enabled);
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SERIAL_ECHOPAIR("Error correction on ", axis_codes[axis]);
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SERIAL_ECHOPGM(" axis is ");
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serialprintPGM(encoders[idx].get_ec_enabled() ? PSTR("en") : PSTR("dis"));
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SERIAL_ECHOLNPGM("abled.");
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}
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2017-06-09 17:22:49 +02:00
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static void set_ec_threshold(const int8_t idx, const float newThreshold, const AxisEnum axis) {
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CHECK_IDX();
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2017-06-09 14:06:23 +02:00
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encoders[idx].set_ec_threshold(newThreshold);
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SERIAL_ECHOPAIR("Error correct threshold for ", axis_codes[axis]);
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SERIAL_ECHOPAIR_F(" axis set to ", newThreshold);
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SERIAL_ECHOLNPGM("mm.");
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}
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2017-06-09 17:22:49 +02:00
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static void get_ec_threshold(const int8_t idx, const AxisEnum axis) {
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CHECK_IDX();
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const float threshold = encoders[idx].get_ec_threshold();
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2017-06-09 14:06:23 +02:00
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SERIAL_ECHOPAIR("Error correct threshold for ", axis_codes[axis]);
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SERIAL_ECHOPAIR_F(" axis is ", threshold);
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SERIAL_ECHOLNPGM("mm.");
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}
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2017-06-09 17:22:49 +02:00
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static int8_t idx_from_axis(const AxisEnum axis) {
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2017-06-09 14:06:23 +02:00
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LOOP_PE(i)
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if (encoders[i].get_axis() == axis) return i;
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return -1;
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}
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2017-06-09 17:22:49 +02:00
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static int8_t idx_from_addr(const uint8_t addr) {
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2017-06-09 14:06:23 +02:00
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LOOP_PE(i)
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if (encoders[i].get_address() == addr) return i;
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return -1;
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}
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2017-06-09 17:22:49 +02:00
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static int8_t parse();
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2017-06-09 14:06:23 +02:00
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2017-06-09 17:22:49 +02:00
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static void M860();
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static void M861();
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static void M862();
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static void M863();
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static void M864();
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static void M865();
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static void M866();
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static void M867();
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static void M868();
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static void M869();
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2017-06-09 14:06:23 +02:00
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2017-06-09 17:22:49 +02:00
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static I2CPositionEncoder encoders[I2CPE_ENCODER_CNT];
|
2017-09-06 13:28:32 +02:00
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};
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extern I2CPositionEncodersMgr I2CPEM;
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2017-06-09 14:06:23 +02:00
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#endif //I2CPOSENC_H
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