Rotary encoder cleanup (#20753)
Scott Lahteine
4 years ago
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bee794e598
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104aceb44a
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/**
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* Marlin 3D Printer Firmware
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* Copyright (c) 2020 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 <https://www.gnu.org/licenses/>.
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*
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*/
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#pragma once
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#include "../inc/MarlinConfig.h"
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#if ((!HAS_ADC_BUTTONS && IS_NEWPANEL) || BUTTONS_EXIST(EN1, EN2)) && !IS_TFTGLCD_PANEL
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#define HAS_ENCODER_WHEEL 1
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#endif
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#if HAS_ENCODER_WHEEL || ANY_BUTTON(ENC, BACK, UP, DWN, LFT, RT)
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#define HAS_DIGITAL_BUTTONS 1
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#endif
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#if !HAS_ADC_BUTTONS && (IS_RRW_KEYPAD || (HAS_WIRED_LCD && !IS_NEWPANEL))
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#define HAS_SHIFT_ENCODER 1
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#endif
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// I2C buttons must be read in the main thread
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#if ANY(LCD_I2C_VIKI, LCD_I2C_PANELOLU2, IS_TFTGLCD_PANEL)
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#define HAS_SLOW_BUTTONS 1
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#endif
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#if HAS_ENCODER_WHEEL
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#define ENCODER_PHASE_0 0
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#define ENCODER_PHASE_1 2
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#define ENCODER_PHASE_2 3
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#define ENCODER_PHASE_3 1
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#endif
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#if EITHER(HAS_DIGITAL_BUTTONS, DWIN_CREALITY_LCD)
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// Wheel spin pins where BA is 00, 10, 11, 01 (1 bit always changes)
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#define BLEN_A 0
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#define BLEN_B 1
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#define EN_A _BV(BLEN_A)
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#define EN_B _BV(BLEN_B)
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#define _BUTTON_PRESSED(BN) !READ(BTN_##BN)
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#if BUTTON_EXISTS(ENC) || HAS_TOUCH_BUTTONS
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#define BLEN_C 2
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#define EN_C _BV(BLEN_C)
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#endif
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#if ENABLED(LCD_I2C_VIKI)
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#include <LiquidTWI2.h>
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#define B_I2C_BTN_OFFSET 3 // (the first three bit positions reserved for EN_A, EN_B, EN_C)
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// button and encoder bit positions within 'buttons'
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#define B_LE (BUTTON_LEFT << B_I2C_BTN_OFFSET) // The remaining normalized buttons are all read via I2C
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#define B_UP (BUTTON_UP << B_I2C_BTN_OFFSET)
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#define B_MI (BUTTON_SELECT << B_I2C_BTN_OFFSET)
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#define B_DW (BUTTON_DOWN << B_I2C_BTN_OFFSET)
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#define B_RI (BUTTON_RIGHT << B_I2C_BTN_OFFSET)
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#if BUTTON_EXISTS(ENC) // The pause/stop/restart button is connected to BTN_ENC when used
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#define B_ST (EN_C) // Map the pause/stop/resume button into its normalized functional name
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#define BUTTON_CLICK() (buttons & (B_MI|B_RI|B_ST)) // Pause/stop also acts as click until a proper pause/stop is implemented.
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#else
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#define BUTTON_CLICK() (buttons & (B_MI|B_RI))
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#endif
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// I2C buttons take too long to read inside an interrupt context and so we read them during lcd_update
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#elif ENABLED(LCD_I2C_PANELOLU2)
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#if !BUTTON_EXISTS(ENC) // Use I2C if not directly connected to a pin
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#define B_I2C_BTN_OFFSET 3 // (the first three bit positions reserved for EN_A, EN_B, EN_C)
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#define B_MI (PANELOLU2_ENCODER_C << B_I2C_BTN_OFFSET) // requires LiquidTWI2 library v1.2.3 or later
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#define BUTTON_CLICK() (buttons & B_MI)
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#endif
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#endif
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#else
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#undef BUTTON_EXISTS
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#define BUTTON_EXISTS(...) false
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// Dummy button, never pressed
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#define _BUTTON_PRESSED(BN) false
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// Shift register bits correspond to buttons:
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#define BL_LE 7 // Left
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#define BL_UP 6 // Up
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#define BL_MI 5 // Middle
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#define BL_DW 4 // Down
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#define BL_RI 3 // Right
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#define BL_ST 2 // Red Button
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#define B_LE _BV(BL_LE)
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#define B_UP _BV(BL_UP)
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#define B_MI _BV(BL_MI)
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#define B_DW _BV(BL_DW)
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#define B_RI _BV(BL_RI)
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#define B_ST _BV(BL_ST)
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#ifndef BUTTON_CLICK
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#define BUTTON_CLICK() (buttons & (B_MI|B_ST))
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#endif
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#endif
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#if IS_RRW_KEYPAD
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#define BTN_OFFSET 0 // Bit offset into buttons for shift register values
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#define BLEN_KEYPAD_F3 0
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#define BLEN_KEYPAD_F2 1
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#define BLEN_KEYPAD_F1 2
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#define BLEN_KEYPAD_DOWN 3
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#define BLEN_KEYPAD_RIGHT 4
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#define BLEN_KEYPAD_MIDDLE 5
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#define BLEN_KEYPAD_UP 6
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#define BLEN_KEYPAD_LEFT 7
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#define EN_KEYPAD_F1 _BV(BTN_OFFSET + BLEN_KEYPAD_F1)
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#define EN_KEYPAD_F2 _BV(BTN_OFFSET + BLEN_KEYPAD_F2)
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#define EN_KEYPAD_F3 _BV(BTN_OFFSET + BLEN_KEYPAD_F3)
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#define EN_KEYPAD_DOWN _BV(BTN_OFFSET + BLEN_KEYPAD_DOWN)
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#define EN_KEYPAD_RIGHT _BV(BTN_OFFSET + BLEN_KEYPAD_RIGHT)
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#define EN_KEYPAD_MIDDLE _BV(BTN_OFFSET + BLEN_KEYPAD_MIDDLE)
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#define EN_KEYPAD_UP _BV(BTN_OFFSET + BLEN_KEYPAD_UP)
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#define EN_KEYPAD_LEFT _BV(BTN_OFFSET + BLEN_KEYPAD_LEFT)
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#define RRK(B) (keypad_buttons & (B))
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#ifdef EN_C
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#define BUTTON_CLICK() ((buttons & EN_C) || RRK(EN_KEYPAD_MIDDLE))
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#else
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#define BUTTON_CLICK() RRK(EN_KEYPAD_MIDDLE)
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#endif
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#endif
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#ifndef EN_A
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#define EN_A 0
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#endif
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#ifndef EN_B
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#define EN_B 0
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#endif
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#ifndef EN_C
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#define EN_C 0
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#endif
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#if BUTTON_EXISTS(BACK) || EITHER(HAS_TOUCH_BUTTONS, IS_TFTGLCD_PANEL)
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#define BLEN_D 3
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#define EN_D _BV(BLEN_D)
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#else
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#define EN_D 0
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#endif
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#define BUTTON_PRESSED(BN) (_BUTTON_PRESSED_##BN)
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#if BUTTON_EXISTS(EN1)
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#define _BUTTON_PRESSED_EN1 _BUTTON_PRESSED(EN1)
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#else
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#define _BUTTON_PRESSED_EN1 false
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#endif
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#if BUTTON_EXISTS(EN2)
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#define _BUTTON_PRESSED_EN2 _BUTTON_PRESSED(EN2)
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#else
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#define _BUTTON_PRESSED_EN2 false
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#endif
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#if BUTTON_EXISTS(ENC_EN)
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#define _BUTTON_PRESSED_ENC_EN _BUTTON_PRESSED(ENC_EN)
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#else
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#define _BUTTON_PRESSED_ENC_EN false
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#endif
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#if BUTTON_EXISTS(ENC)
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#define _BUTTON_PRESSED_ENC _BUTTON_PRESSED(ENC)
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#else
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#define _BUTTON_PRESSED_ENC false
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#endif
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#if BUTTON_EXISTS(UP)
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#define _BUTTON_PRESSED_UP _BUTTON_PRESSED(UP)
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#else
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#define _BUTTON_PRESSED_UP false
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#endif
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#if BUTTON_EXISTS(DWN)
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#define _BUTTON_PRESSED_DWN _BUTTON_PRESSED(DWN)
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#else
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#define _BUTTON_PRESSED_DWN false
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#endif
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#if BUTTON_EXISTS(LFT)
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#define _BUTTON_PRESSED_LFT _BUTTON_PRESSED(LFT)
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#else
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#define _BUTTON_PRESSED_LFT false
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#endif
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#if BUTTON_EXISTS(RT)
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#define _BUTTON_PRESSED_RT _BUTTON_PRESSED(RT)
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#else
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#define _BUTTON_PRESSED_RT false
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#endif
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#if BUTTON_EXISTS(BACK)
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#define _BUTTON_PRESSED_BACK _BUTTON_PRESSED(BACK)
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#else
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#define _BUTTON_PRESSED_BACK false
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#endif
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#ifndef BUTTON_CLICK
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#if EN_C > 0
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#define BUTTON_CLICK() (buttons & EN_C)
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#else
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#define BUTTON_CLICK() false
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#endif
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#endif
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#if EN_D > 0
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#define LCD_BACK_CLICKED() (buttons & EN_D)
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#else
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#define LCD_BACK_CLICKED() false
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#endif
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