grauerfuchs
5 years ago
committed by
GitHub
GitHub
8 changed files with 197 additions and 13 deletions
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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 <http://www.gnu.org/licenses/>.
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* |
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*/ |
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/**
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* PCA9533 LED controller driver (MightyBoard, FlashForge Creator Pro, etc.) |
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* by @grauerfuchs - 1 Apr 2020 |
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*/ |
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#include "../../inc/MarlinConfig.h" |
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#if ENABLED(PCA9533) |
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#include "pca9533.h" |
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#include <Wire.h> |
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void PCA9533_init() { |
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Wire.begin(); |
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PCA9533_reset(); |
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} |
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static void PCA9533_writeAllRegisters(uint8_t psc0, uint8_t pwm0, uint8_t psc1, uint8_t pwm1, uint8_t ls0){ |
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uint8_t data[6] = { PCA9533_REG_PSC0 | PCA9533_REGM_AI, psc0, pwm0, psc1, pwm1, ls0 }; |
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Wire.beginTransmission(PCA9533_Addr >> 1); |
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Wire.write(data, 6); |
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Wire.endTransmission(); |
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delayMicroseconds(1); |
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} |
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static void PCA9533_writeRegister(uint8_t reg, uint8_t val){ |
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uint8_t data[2] = { reg, val }; |
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Wire.beginTransmission(PCA9533_Addr >> 1); |
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Wire.write(data, 2); |
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Wire.endTransmission(); |
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delayMicroseconds(1); |
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} |
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// Reset (clear) all registers
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void PCA9533_reset() { |
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PCA9533_writeAllRegisters(0, 0, 0, 0, 0); |
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} |
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// Turn all LEDs off
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void PCA9533_setOff() { |
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PCA9533_writeRegister(PCA9533_REG_SEL, 0); |
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} |
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void PCA9533_setColor(uint8_t red, uint8_t green, uint8_t blue) { |
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uint8_t r_pwm0 = 0; // Register data - PWM value
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uint8_t r_pwm1 = 0; // Register data - PWM value
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uint8_t op_g = 0, op_r = 0, op_b = 0; // Opcodes - Green, Red, Blue
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// Light theory! GREEN takes priority because
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// it's the most visible to the human eye.
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if (green == 0) op_g = PCA9533_LED_OP_OFF; |
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else if (green == 255) op_g = PCA9533_LED_OP_ON; |
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else { r_pwm0 = green; op_g = PCA9533_LED_OP_PWM0; } |
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// RED
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if (red == 0) op_r = PCA9533_LED_OP_OFF; |
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else if (red == 255) op_r = PCA9533_LED_OP_ON; |
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else if (r_pwm0 == 0 || r_pwm0 == red) { |
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r_pwm0 = red; op_r = PCA9533_LED_OP_PWM0; |
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} |
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else { |
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r_pwm1 = red; op_r = PCA9533_LED_OP_PWM1; |
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} |
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// BLUE
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if (blue == 0) op_b = PCA9533_LED_OP_OFF; |
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else if (blue == 255) op_b = PCA9533_LED_OP_ON; |
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else if (r_pwm0 == 0 || r_pwm0 == blue) { |
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r_pwm0 = blue; op_b = PCA9533_LED_OP_PWM0; |
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} |
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else if (r_pwm1 == 0 || r_pwm1 == blue) { |
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r_pwm1 = blue; op_b = PCA9533_LED_OP_PWM1; |
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} |
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else { |
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/**
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* Conflict. 3 values are requested but only 2 channels exist. |
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* G is on channel 0 and R is on channel 1, so work from there. |
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* Find the closest match, average the values, then use the free channel. |
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*/ |
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uint8_t dgb = ABS(green - blue), |
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dgr = ABS(green - red), |
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dbr = ABS(blue - red); |
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if (dgb < dgr && dgb < dbr) { // Mix with G on channel 0.
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op_b = PCA9533_LED_OP_PWM0; |
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r_pwm0 = uint8_t(((uint16_t)green + (uint16_t)blue) / 2); |
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} |
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else if (dbr <= dgr && dbr <= dgb) { // Mix with R on channel 1.
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op_b = PCA9533_LED_OP_PWM1; |
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r_pwm1 = uint8_t(((uint16_t)red + (uint16_t)blue) / 2); |
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} |
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else { // Mix R+G on 0 and put B on 1.
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op_r = PCA9533_LED_OP_PWM0; |
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r_pwm0 = uint8_t(((uint16_t)green + (uint16_t)red) / 2); |
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op_b = PCA9533_LED_OP_PWM1; |
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r_pwm1 = blue; |
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} |
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} |
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// Write the changes to the hardware
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PCA9533_writeAllRegisters(0, r_pwm0, 0, r_pwm1, |
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(op_g << PCA9533_LED_OFS_GRN) | (op_r << PCA9533_LED_OFS_RED) | (op_b << PCA9533_LED_OFS_BLU) |
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); |
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} |
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#endif // PCA9533
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@ -0,0 +1,59 @@ |
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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 <http://www.gnu.org/licenses/>.
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* |
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*/ |
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#pragma once |
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/*
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* Driver for the PCA9533 LED controller found on the MightyBoard |
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* used by FlashForge Creator Pro, MakerBot, etc. |
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* Written 2020 APR 01 by grauerfuchs |
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*/ |
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#include <Arduino.h> |
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#define ENABLE_I2C_PULLUPS |
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// Chip address (for Wire)
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#define PCA9533_Addr 0xC4 |
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// Control registers
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#define PCA9533_REG_READ 0x00 |
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#define PCA9533_REG_PSC0 0x01 |
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#define PCA9533_REG_PWM0 0x02 |
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#define PCA9533_REG_PSC1 0x03 |
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#define PCA9533_REG_PWM1 0x04 |
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#define PCA9533_REG_SEL 0x05 |
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#define PCA9533_REGM_AI 0x10 |
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// LED selector operation
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#define PCA9533_LED_OP_OFF 0B00 |
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#define PCA9533_LED_OP_ON 0B01 |
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#define PCA9533_LED_OP_PWM0 0B10 |
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#define PCA9533_LED_OP_PWM1 0B11 |
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// Select register bit offsets for LED colors
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#define PCA9533_LED_OFS_RED 0 |
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#define PCA9533_LED_OFS_GRN 2 |
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#define PCA9533_LED_OFS_BLU 4 |
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void PCA9533_init(); |
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void PCA9533_reset(); |
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void PCA9533_setColor(uint8_t red, uint8_t green, uint8_t blue); |
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void PCA9533_setOff(); |
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