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Use native ADC resolution where possible (#15719)

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This commit is contained in:
LinFor
2019-11-07 02:49:17 +03:00
committed by Scott Lahteine
parent 9201197878
commit a84e3d1b80
17 changed files with 77 additions and 43 deletions
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8
Marlin/src/module/temperature.cpp
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@ -302,7 +302,7 @@ volatile bool Temperature::temp_meas_ready = false;
// public:
#if HAS_ADC_BUTTONS
uint32_t Temperature::current_ADCKey_raw = 1024;
uint32_t Temperature::current_ADCKey_raw = HAL_ADC_RANGE;
uint8_t Temperature::ADCKey_count = 0;
#endif
@ -1308,7 +1308,7 @@ void Temperature::manage_heater() {
}
// maximum adc value .. take into account the over sampling
const int adc_max = (THERMISTOR_ADC_RESOLUTION * OVERSAMPLENR) - 1,
const int adc_max = MAX_RAW_THERMISTOR_VALUE,
adc_raw = constrain(raw, 1, adc_max - 1); // constrain to prevent divide-by-zero
const float adc_inverse = (adc_max - adc_raw) - 0.5f,
@ -2742,7 +2742,7 @@ void Temperature::isr() {
next_sensor_state = adc_sensor_state; // redo this state
else if (ADCKey_count < 16) {
raw_ADCKey_value = HAL_READ_ADC();
if (raw_ADCKey_value <= 900) {
if (raw_ADCKey_value <= 900UL * HAL_ADC_RANGE / 1024UL) {
NOMORE(current_ADCKey_raw, raw_ADCKey_value);
ADCKey_count++;
}
@ -2750,7 +2750,7 @@ void Temperature::isr() {
if (ADCKey_count > 0) ADCKey_count++; else ADCKey_pressed = false;
if (ADCKey_pressed) {
ADCKey_count = 0;
current_ADCKey_raw = 1024;
current_ADCKey_raw = HAL_ADC_RANGE;
}
}
}

1
Marlin/src/module/temperature.h
View File

@ -217,7 +217,6 @@ typedef struct { int16_t raw_min, raw_max; } raw_range_t;
typedef struct { int16_t mintemp, maxtemp; } celsius_range_t;
typedef struct { int16_t raw_min, raw_max, mintemp, maxtemp; } temp_range_t;
#define THERMISTOR_ADC_RESOLUTION 1024 // 10-bit ADC .. shame to waste 12-bits of resolution on 32-bit
#define THERMISTOR_ABS_ZERO_C -273.15f // bbbbrrrrr cold !
#define THERMISTOR_RESISTANCE_NOMINAL_C 25.0f // mmmmm comfortable

49
Marlin/src/module/thermistor/thermistors.h
View File

@ -23,8 +23,21 @@
#include "../../inc/MarlinConfig.h"
#define OVERSAMPLENR 16
#define OV(N) int16_t((N) * (OVERSAMPLENR))
#define THERMISTOR_TABLE_ADC_RESOLUTION 1024
#define THERMISTOR_TABLE_SCALE (HAL_ADC_RANGE / (THERMISTOR_TABLE_ADC_RESOLUTION))
#if ENABLED(HAL_ADC_FILTERED)
#define OVERSAMPLENR 1
#else
#define OVERSAMPLENR 16
#endif
#define MAX_RAW_THERMISTOR_VALUE (HAL_ADC_RANGE * (OVERSAMPLENR) - 1)
// Currently Marlin stores all oversampled ADC values as int16_t, make sure the HAL settings do not overflow 15bit
#if MAX_RAW_THERMISTOR_VALUE > ((1 << 15) - 1)
#error "MAX_RAW_THERMISTOR_VALUE is too large for int16_t. Reduce OVERSAMPLENR or HAL_ADC_RESOLUTION."
#endif
#define OV(N) int16_t((N) * (OVERSAMPLENR) * (THERMISTOR_TABLE_SCALE))
#define ANY_THERMISTOR_IS(n) (THERMISTOR_HEATER_0 == n || THERMISTOR_HEATER_1 == n || THERMISTOR_HEATER_2 == n || THERMISTOR_HEATER_3 == n || THERMISTOR_HEATER_4 == n || THERMISTOR_HEATER_5 == n || THERMISTORBED == n || THERMISTORCHAMBER == n)
@ -251,74 +264,74 @@ static_assert(
// For thermocouples the highest temperature results in the highest ADC value
#ifndef HEATER_0_RAW_HI_TEMP
#if defined(REVERSE_TEMP_SENSOR_RANGE) || !defined(HEATER_0_USES_THERMISTOR)
#define HEATER_0_RAW_HI_TEMP 16383
#define HEATER_0_RAW_HI_TEMP MAX_RAW_THERMISTOR_VALUE
#define HEATER_0_RAW_LO_TEMP 0
#else
#define HEATER_0_RAW_HI_TEMP 0
#define HEATER_0_RAW_LO_TEMP 16383
#define HEATER_0_RAW_LO_TEMP MAX_RAW_THERMISTOR_VALUE
#endif
#endif
#ifndef HEATER_1_RAW_HI_TEMP
#if defined(REVERSE_TEMP_SENSOR_RANGE) || !defined(HEATER_1_USES_THERMISTOR)
#define HEATER_1_RAW_HI_TEMP 16383
#define HEATER_1_RAW_HI_TEMP MAX_RAW_THERMISTOR_VALUE
#define HEATER_1_RAW_LO_TEMP 0
#else
#define HEATER_1_RAW_HI_TEMP 0
#define HEATER_1_RAW_LO_TEMP 16383
#define HEATER_1_RAW_LO_TEMP MAX_RAW_THERMISTOR_VALUE
#endif
#endif
#ifndef HEATER_2_RAW_HI_TEMP
#if defined(REVERSE_TEMP_SENSOR_RANGE) || !defined(HEATER_2_USES_THERMISTOR)
#define HEATER_2_RAW_HI_TEMP 16383
#define HEATER_2_RAW_HI_TEMP MAX_RAW_THERMISTOR_VALUE
#define HEATER_2_RAW_LO_TEMP 0
#else
#define HEATER_2_RAW_HI_TEMP 0
#define HEATER_2_RAW_LO_TEMP 16383
#define HEATER_2_RAW_LO_TEMP MAX_RAW_THERMISTOR_VALUE
#endif
#endif
#ifndef HEATER_3_RAW_HI_TEMP
#if defined(REVERSE_TEMP_SENSOR_RANGE) || !defined(HEATER_3_USES_THERMISTOR)
#define HEATER_3_RAW_HI_TEMP 16383
#define HEATER_3_RAW_HI_TEMP MAX_RAW_THERMISTOR_VALUE
#define HEATER_3_RAW_LO_TEMP 0
#else
#define HEATER_3_RAW_HI_TEMP 0
#define HEATER_3_RAW_LO_TEMP 16383
#define HEATER_3_RAW_LO_TEMP MAX_RAW_THERMISTOR_VALUE
#endif
#endif
#ifndef HEATER_4_RAW_HI_TEMP
#if defined(REVERSE_TEMP_SENSOR_RANGE) || !defined(HEATER_4_USES_THERMISTOR)
#define HEATER_4_RAW_HI_TEMP 16383
#define HEATER_4_RAW_HI_TEMP MAX_RAW_THERMISTOR_VALUE
#define HEATER_4_RAW_LO_TEMP 0
#else
#define HEATER_4_RAW_HI_TEMP 0
#define HEATER_4_RAW_LO_TEMP 16383
#define HEATER_4_RAW_LO_TEMP MAX_RAW_THERMISTOR_VALUE
#endif
#endif
#ifndef HEATER_5_RAW_HI_TEMP
#if defined(REVERSE_TEMP_SENSOR_RANGE) || !defined(HEATER_5_USES_THERMISTOR)
#define HEATER_5_RAW_HI_TEMP 16383
#define HEATER_5_RAW_HI_TEMP MAX_RAW_THERMISTOR_VALUE
#define HEATER_5_RAW_LO_TEMP 0
#else
#define HEATER_5_RAW_HI_TEMP 0
#define HEATER_5_RAW_LO_TEMP 16383
#define HEATER_5_RAW_LO_TEMP MAX_RAW_THERMISTOR_VALUE
#endif
#endif
#ifndef HEATER_BED_RAW_HI_TEMP
#if defined(REVERSE_TEMP_SENSOR_RANGE) || !defined(HEATER_BED_USES_THERMISTOR)
#define HEATER_BED_RAW_HI_TEMP 16383
#define HEATER_BED_RAW_HI_TEMP MAX_RAW_THERMISTOR_VALUE
#define HEATER_BED_RAW_LO_TEMP 0
#else
#define HEATER_BED_RAW_HI_TEMP 0
#define HEATER_BED_RAW_LO_TEMP 16383
#define HEATER_BED_RAW_LO_TEMP MAX_RAW_THERMISTOR_VALUE
#endif
#endif
#ifndef HEATER_CHAMBER_RAW_HI_TEMP
#if defined(REVERSE_TEMP_SENSOR_RANGE) || !defined(HEATER_CHAMBER_USES_THERMISTOR)
#define HEATER_CHAMBER_RAW_HI_TEMP 16383
#define HEATER_CHAMBER_RAW_HI_TEMP MAX_RAW_THERMISTOR_VALUE
#define HEATER_CHAMBER_RAW_LO_TEMP 0
#else
#define HEATER_CHAMBER_RAW_HI_TEMP 0
#define HEATER_CHAMBER_RAW_LO_TEMP 16383
#define HEATER_CHAMBER_RAW_LO_TEMP MAX_RAW_THERMISTOR_VALUE
#endif
#endif