From 39c34e4992c274943b35918d6ed9d66508bbb88a Mon Sep 17 00:00:00 2001 From: ManuelMcLure Date: Fri, 28 Feb 2020 21:28:17 -0800 Subject: [PATCH] Use ADC resolution in AD595/8495 calculation (#17018) Fixes thermocouple reading on LP1768 (which uses 12-bit resolution). --- Marlin/src/module/temperature.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Marlin/src/module/temperature.cpp b/Marlin/src/module/temperature.cpp index 20a08240c..c9547b3e9 100644 --- a/Marlin/src/module/temperature.cpp +++ b/Marlin/src/module/temperature.cpp @@ -1232,8 +1232,8 @@ void Temperature::manage_heater() { UNUSED(ms); } -#define TEMP_AD595(RAW) ((RAW) * 5.0 * 100.0 / 1024.0 / (OVERSAMPLENR) * (TEMP_SENSOR_AD595_GAIN) + TEMP_SENSOR_AD595_OFFSET) -#define TEMP_AD8495(RAW) ((RAW) * 6.6 * 100.0 / 1024.0 / (OVERSAMPLENR) * (TEMP_SENSOR_AD8495_GAIN) + TEMP_SENSOR_AD8495_OFFSET) +#define TEMP_AD595(RAW) ((RAW) * 5.0 * 100.0 / float(HAL_ADC_RANGE) / (OVERSAMPLENR) * (TEMP_SENSOR_AD595_GAIN) + TEMP_SENSOR_AD595_OFFSET) +#define TEMP_AD8495(RAW) ((RAW) * 6.6 * 100.0 / float(HAL_ADC_RANGE) / (OVERSAMPLENR) * (TEMP_SENSOR_AD8495_GAIN) + TEMP_SENSOR_AD8495_OFFSET) /** * Bisect search for the range of the 'raw' value, then interpolate