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Add current offset for POWER_MONITOR sensor (#18600)

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cccc 2020-07-10 11:43:04 +08:00 committed by GitHub
parent 0f64e7912f
commit b64113411c
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2 changed files with 2 additions and 1 deletions
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1
Marlin/Configuration_adv.h
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@ -3029,6 +3029,7 @@
//#define POWER_MONITOR_VOLTAGE // Monitor the system voltage
#if EITHER(POWER_MONITOR_CURRENT, POWER_MONITOR_VOLTAGE)
#define POWER_MONITOR_VOLTS_PER_AMP 0.05000 // Input voltage to the MCU analog pin per amp - DO NOT apply more than ADC_VREF!
#define POWER_MONITOR_CURRENT_OFFSET -1 // Offset value for current sensors with linear function output
#define POWER_MONITOR_VOLTS_PER_VOLT 0.11786 // Input voltage to the MCU analog pin per volt - DO NOT apply more than ADC_VREF!
#define POWER_MONITOR_FIXED_VOLTAGE 13.6 // Voltage for a current sensor with no voltage sensor (for power display)
#endif

2
Marlin/src/feature/power_monitor.h
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@ -35,7 +35,7 @@ struct pm_lpf_t {
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))));
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);