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Diffstat (limited to 'Marlin/src/feature/power_monitor.h')
-rw-r--r-- | Marlin/src/feature/power_monitor.h | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/Marlin/src/feature/power_monitor.h b/Marlin/src/feature/power_monitor.h new file mode 100644 index 0000000..f378ee2 --- /dev/null +++ b/Marlin/src/feature/power_monitor.h @@ -0,0 +1,142 @@ +/** + * Marlin 3D Printer Firmware + * Copyright (c) 2020 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 <https://www.gnu.org/licenses/>. + * + */ +#pragma once + +#include "../inc/MarlinConfig.h" + +#define PM_SAMPLE_RANGE 1024 +#define PM_K_VALUE 6 +#define PM_K_SCALE 6 + +template <const float & SCALE, int K_VALUE, int K_SCALE> +struct pm_lpf_t { + uint32_t filter_buf; + float value; + void add_sample(const uint16_t sample) { + filter_buf = filter_buf - (filter_buf >> K_VALUE) + (uint32_t(sample) << K_SCALE); + } + void capture() { + value = filter_buf * (SCALE * (1.0f / (1UL << (PM_K_VALUE + PM_K_SCALE)))) + (POWER_MONITOR_CURRENT_OFFSET); + } + void reset(uint16_t reset_value = 0) { + filter_buf = uint32_t(reset_value) << (K_VALUE + K_SCALE); + capture(); + } +}; + +class PowerMonitor { +private: + #if ENABLED(POWER_MONITOR_CURRENT) + static constexpr float amps_adc_scale = float(ADC_VREF) / (POWER_MONITOR_VOLTS_PER_AMP * PM_SAMPLE_RANGE); + static pm_lpf_t<amps_adc_scale, PM_K_VALUE, PM_K_SCALE> amps; + #endif + #if ENABLED(POWER_MONITOR_VOLTAGE) + static constexpr float volts_adc_scale = float(ADC_VREF) / (POWER_MONITOR_VOLTS_PER_VOLT * PM_SAMPLE_RANGE); + static pm_lpf_t<volts_adc_scale, PM_K_VALUE, PM_K_SCALE> volts; + #endif + +public: + static uint8_t flags; // M430 flags to display current + + static millis_t display_item_ms; + static uint8_t display_item; + + PowerMonitor() { reset(); } + + enum PM_Display_Bit : uint8_t { + PM_DISP_BIT_I, // Current display enable bit + PM_DISP_BIT_V, // Voltage display enable bit + PM_DISP_BIT_P // Power display enable bit + }; + + #if ENABLED(POWER_MONITOR_CURRENT) + FORCE_INLINE static float getAmps() { return amps.value; } + void add_current_sample(const uint16_t value) { amps.add_sample(value); } + #endif + + #if HAS_POWER_MONITOR_VREF + #if ENABLED(POWER_MONITOR_VOLTAGE) + FORCE_INLINE static float getVolts() { return volts.value; } + #else + FORCE_INLINE static float getVolts() { return POWER_MONITOR_FIXED_VOLTAGE; } // using a specified fixed valtage as the voltage measurement + #endif + #if ENABLED(POWER_MONITOR_VOLTAGE) + void add_voltage_sample(const uint16_t value) { volts.add_sample(value); } + #endif + #endif + + #if HAS_POWER_MONITOR_WATTS + FORCE_INLINE static float getPower() { return getAmps() * getVolts(); } + #endif + + #if HAS_WIRED_LCD + #if HAS_MARLINUI_U8GLIB && DISABLED(LIGHTWEIGHT_UI) + FORCE_INLINE static bool display_enabled() { return flags != 0x00; } + #endif + #if ENABLED(POWER_MONITOR_CURRENT) + static void draw_current(); + FORCE_INLINE static bool current_display_enabled() { return TEST(flags, PM_DISP_BIT_I); } + FORCE_INLINE static void set_current_display(const bool b) { SET_BIT_TO(flags, PM_DISP_BIT_I, b); } + FORCE_INLINE static void toggle_current_display() { TBI(flags, PM_DISP_BIT_I); } + #endif + #if HAS_POWER_MONITOR_VREF + static void draw_voltage(); + FORCE_INLINE static bool voltage_display_enabled() { return TEST(flags, PM_DISP_BIT_V); } + FORCE_INLINE static void set_voltage_display(const bool b) { SET_BIT_TO(flags, PM_DISP_BIT_V, b); } + FORCE_INLINE static void toggle_voltage_display() { TBI(flags, PM_DISP_BIT_V); } + #endif + #if HAS_POWER_MONITOR_WATTS + static void draw_power(); + FORCE_INLINE static bool power_display_enabled() { return TEST(flags, PM_DISP_BIT_P); } + FORCE_INLINE static void set_power_display(const bool b) { SET_BIT_TO(flags, PM_DISP_BIT_P, b); } + FORCE_INLINE static void toggle_power_display() { TBI(flags, PM_DISP_BIT_P); } + #endif + #endif + + static void reset() { + flags = 0x00; + + #if ENABLED(POWER_MONITOR_CURRENT) + amps.reset(); + #endif + + #if ENABLED(POWER_MONITOR_VOLTAGE) + volts.reset(); + #endif + + #if ENABLED(SDSUPPORT) + display_item_ms = 0; + display_item = 0; + #endif + } + + static void capture_values() { + #if ENABLED(POWER_MONITOR_CURRENT) + amps.capture(); + #endif + #if ENABLED(POWER_MONITOR_VOLTAGE) + volts.capture(); + #endif + } +}; + +extern PowerMonitor power_monitor; |