141 lines
4.7 KiB
C++
141 lines
4.7 KiB
C++
/**
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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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#define PM_SAMPLE_RANGE 1024
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#define PM_K_VALUE 6
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#define PM_K_SCALE 6
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template <const float & SCALE, int K_VALUE, int K_SCALE>
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struct pm_lpf_t {
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uint32_t filter_buf;
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float value;
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void add_sample(const uint16_t sample) {
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filter_buf = filter_buf - (filter_buf >> K_VALUE) + (uint32_t(sample) << K_SCALE);
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}
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void capture() {
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value = filter_buf * (SCALE * (1.0f / (1UL << (PM_K_VALUE + PM_K_SCALE)))) + (POWER_MONITOR_CURRENT_OFFSET);
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}
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void reset(uint16_t reset_value = 0) {
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filter_buf = uint32_t(reset_value) << (K_VALUE + K_SCALE);
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capture();
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}
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};
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class PowerMonitor {
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private:
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#if ENABLED(POWER_MONITOR_CURRENT)
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static constexpr float amps_adc_scale = float(ADC_VREF) / (POWER_MONITOR_VOLTS_PER_AMP * PM_SAMPLE_RANGE);
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static pm_lpf_t<amps_adc_scale, PM_K_VALUE, PM_K_SCALE> amps;
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#endif
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#if ENABLED(POWER_MONITOR_VOLTAGE)
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static constexpr float volts_adc_scale = float(ADC_VREF) / (POWER_MONITOR_VOLTS_PER_VOLT * PM_SAMPLE_RANGE);
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static pm_lpf_t<volts_adc_scale, PM_K_VALUE, PM_K_SCALE> volts;
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#endif
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public:
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static uint8_t flags; // M430 flags to display current
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static millis_t display_item_ms;
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static uint8_t display_item;
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PowerMonitor() { reset(); }
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enum PM_Display_Bit : uint8_t {
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PM_DISP_BIT_I, // Current display enable bit
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PM_DISP_BIT_V, // Voltage display enable bit
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PM_DISP_BIT_P // Power display enable bit
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};
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#if ENABLED(POWER_MONITOR_CURRENT)
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FORCE_INLINE static float getAmps() { return amps.value; }
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void add_current_sample(const uint16_t value) { amps.add_sample(value); }
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#endif
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#if HAS_POWER_MONITOR_VREF
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#if ENABLED(POWER_MONITOR_VOLTAGE)
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FORCE_INLINE static float getVolts() { return volts.value; }
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#else
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FORCE_INLINE static float getVolts() { return POWER_MONITOR_FIXED_VOLTAGE; } // using a specified fixed valtage as the voltage measurement
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#endif
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#if ENABLED(POWER_MONITOR_VOLTAGE)
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void add_voltage_sample(const uint16_t value) { volts.add_sample(value); }
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#endif
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#endif
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#if HAS_POWER_MONITOR_WATTS
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FORCE_INLINE static float getPower() { return getAmps() * getVolts(); }
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#endif
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#if HAS_SPI_LCD
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FORCE_INLINE static bool display_enabled() { return flags != 0x00; }
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#if ENABLED(POWER_MONITOR_CURRENT)
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static void draw_current();
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FORCE_INLINE static bool current_display_enabled() { return TEST(flags, PM_DISP_BIT_I); }
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FORCE_INLINE static void set_current_display(const bool b) { SET_BIT_TO(flags, PM_DISP_BIT_I, b); }
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FORCE_INLINE static void toggle_current_display() { TBI(flags, PM_DISP_BIT_I); }
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#endif
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#if HAS_POWER_MONITOR_VREF
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static void draw_voltage();
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FORCE_INLINE static bool voltage_display_enabled() { return TEST(flags, PM_DISP_BIT_V); }
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FORCE_INLINE static void set_voltage_display(const bool b) { SET_BIT_TO(flags, PM_DISP_BIT_V, b); }
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FORCE_INLINE static void toggle_voltage_display() { TBI(flags, PM_DISP_BIT_V); }
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#endif
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#if HAS_POWER_MONITOR_WATTS
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static void draw_power();
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FORCE_INLINE static bool power_display_enabled() { return TEST(flags, PM_DISP_BIT_P); }
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FORCE_INLINE static void set_power_display(const bool b) { SET_BIT_TO(flags, PM_DISP_BIT_P, b); }
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FORCE_INLINE static void toggle_power_display() { TBI(flags, PM_DISP_BIT_P); }
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#endif
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#endif
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static void reset() {
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flags = 0x00;
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#if ENABLED(POWER_MONITOR_CURRENT)
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amps.reset();
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#endif
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#if ENABLED(POWER_MONITOR_VOLTAGE)
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volts.reset();
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#endif
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#if ENABLED(SDSUPPORT)
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display_item_ms = 0;
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display_item = 0;
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#endif
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}
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static void capture_values() {
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#if ENABLED(POWER_MONITOR_CURRENT)
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amps.capture();
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#endif
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#if ENABLED(POWER_MONITOR_VOLTAGE)
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volts.capture();
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#endif
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}
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};
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extern PowerMonitor power_monitor;
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