Added ## Temperature Sensor to readme

Author: Manwlis

README.md

@@ -82,7 +82,22 @@ Example:
 
 The X macros are the single point of truth, and all data structures are automatically generated by the preprocessor. Similar macros are used to generate the field bit positions and masks.
 
-## ADC Driver
+## Temperature Sensor
+The module provides the MCU temperature on demand. Internally, the built-in temperature sensor is sampled periodically through ADC3.
+
+The following configuration is used:
+- ADC conversions are triggered every 1 second using TIM2.
+- Samples are transferred to CM7 through DMA1.
+- DMA operates in double-buffer mode using the HAL multi-buffer DMA API. This provides deterministic low-latency access while avoiding torn reads.
+- In addition to the temperature sensor, the Vrefint channel is also sampled to compensate measurements for supply-voltage variation.
+- ADC3 is supplied with a 100 MHz clock. To achieve the ≥ 5 µs effective sampling time typically recommended by ST, the sampling time is configured to 810.5 cycles (~8.1 µs).
+
+Three modes of calculating the temperature are provided:
+- Floating-point arithmetic.
+- Integer arithmetic.
+- Fixed-point (Q2.30) arithmetic to reduce division overhead.
+
+As the internal sensor is relatively noisy, smoothing is applied in all three modes.
 
 ## Lightweight Logging (LWL)
 LWL is a lightweight logging system designed for low runtime and memory overhead. It is intended primarily for crash and failure analysis, by enabling high-granularity logging during normal operation with minimal impact on system performance. It is most useful when combined with a more verbose, higher-level logging system.