implemented deck.http

README.md

@@ -105,7 +105,9 @@ Various hardware information. May be expanded in the future.
 Exports the following functions:
 
 - `board_id()`: get the board ID (e.g. `lilygo_tdeck` for T-Deck/T-Deck Plus), or `emulated` if it's not run on a CircuitPython device
-- `battery_v()`: (T-Deck-specific) get the current battery voltage
+- `battery_v()`: (T-Deck-specific) get the current battery voltage (or 0 if running in an emulated environment)
+
+Also, this module exposes the `REAL_HW` variable to detect whether the code is running on a real hardware in the CircuitPython environment.
 
 ### `deck.net`
 
@@ -138,6 +140,16 @@ except:
   import requests
 ```
 
+### `deck.http`
+
+High-level HTTP client library.
+
+Exports the following functions:
+
+- `http_set_ua(ua_str='Mozilla/5.0')`: set a default HTTP user agent string
+- `http_fetch(url, useragent=None, hdrs={})`: fetch text content from a URL into a string (returns `(status_code, content)` tuple)
+- `wget(url, filename='', useragent=None, hdrs={})`: download a file into a local path (returns `(status_code, filename)` tuple)
+
 ### `deck.llm`
 
 A helper library for interaction with remote LLM (large language model) endpoints that expose OpenAI-compatible API. As of now, it only exports a single class, `LLMChat`, to encapsulate all the interaction.
@@ -254,7 +266,7 @@ You can start it with `from tdeckboot import *` to give it the same extended cap
 The foundational module set is going to at least include high-level capabilities for:
 
 - exposing low-level socket and HTTP APIs (done),
-- high-level HTTP APIs,
+- high-level HTTP APIs (partially done),
 - high-level LLM APIs (partially done),
 - date and time informaion (done),
 - file system manipulation (done),