Converting int16_t Strings to Signed Floats in Python 3.4 скачать в хорошем качестве

Converting int16_t Strings to Signed Floats in Python 3.4

Learn how to effectively convert `int16_t` strings into signed floating point numbers using Python 3.4 with a step-by-step guide. --- This video is based on the question https://stackoverflow.com/q/68403283/ asked by the user 'Charkrit_A' ( https://stackoverflow.com/u/15655948/ ) and on the answer https://stackoverflow.com/a/68403337/ provided by the user 'Tim Roberts' ( https://stackoverflow.com/u/1883316/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Python3.4 convert int16_t string to signed float Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- Converting int16_t Strings to Signed Floats in Python 3.4 If you're working with serial data and need to convert two 16-bit hexadecimal bytes into a signed float in Python 3.4, you might encounter a challenge. This is especially true if you're new to Python or dealing with data types and conversions. In this post, we will explore a straightforward solution to convert integers representing int16_t strings into signed floating point numbers. The Problem You receive data from a serial communication as two 16-bit hexadecimal bytes. In this case, the bytes are represented as two Python integers: [48822, 15938]. Your goal is to convert these integers into a signed float. The following transformation illustrates the conversion process: Input: [48822, 15938] Hexadecimal Representation: 0xbeb6, 0x3e42 Combined: 0x3e42beb6 Desired Output: 0.190181 To accomplish this task in Python 3.4, we need to leverage the struct module that helps handle binary data. The Solution Here’s how you can achieve the conversion using a simple snippet of Python code: Step 1: Import the Required Module Start by importing the struct module, which provides functions to convert between Python values and C structs represented as Python bytes objects. [[See Video to Reveal this Text or Code Snippet]] Step 2: Pack the Integers Use struct.pack() to convert the two 16-bit integers into a binary representation. We will pack the integers with the format HH, which stands for two unsigned short integers (16 bits each). Step 3: Unpack as Float Next, use struct.unpack() to convert the packed binary data back into a float. The format f indicates that we want the result as a float. Final Code Example Here's the complete code: [[See Video to Reveal this Text or Code Snippet]] Explanation of the Code struct.pack('HH', *int_values): This line packs the list of integers into a byte string using the body of the format string HH. struct.unpack('f', ...): This line takes the packed byte string and unpacks it into a single float. Conclusion Converting int16_t strings to signed floats in Python is a straightforward process when leveraging the capabilities of the struct module. By following the steps outlined above, you can convert received data seamlessly, allowing you to work effectively with floating point values derived from hexadecimal serial data. Now, you can confidently convert integers from serial communication into usable float values in your Python 3.4 applications!