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ugui.py: Enable user to disable GC.

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Peter Hinch 2022-03-24 18:06:34 +00:00
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README.md
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@ -58,16 +58,17 @@ target and a C device driver (unless you can acquire a suitable binary).
# Project status # Project status
February 2022: This has had a significant upgrade to support use with only March 2022: Add [latency control](./README.md#45-bound-variable) for hosts with
three buttons as devised by Bart Cerneels. Simplified widget import. Existing SPIRAM.
users should replace the entire `gui` tree.
Code has been tested on ESP32, Pi Pico and Pyboard. This is under development February 2022: Supports use with only three buttons devised by Bart Cerneels.
so check for updates. Simplified widget import. Existing users should replace the entire `gui` tree.
Firmware V1.17 has provided a major boost to text rendering speed on color Code has been tested on ESP32, ESP32-S2, Pi Pico and Pyboard. This is under
display. V1.17 or later is now a requirement for color displays, although development so check for updates.
there is a workround if it's impossible to upgrade. See
Firmware V1.17 or later is a requirement for color displays, although there is
a workround if it's impossible to upgrade. See
[section 1.8](./README.md#18-performance-and-hardware-notes) for details. [section 1.8](./README.md#18-performance-and-hardware-notes) for details.
# 0. Contents # 0. Contents
@ -100,7 +101,7 @@ there is a workround if it's impossible to upgrade. See
4.2 [Constructor](./README.md#42-constructor) 4.2 [Constructor](./README.md#42-constructor)
4.3 [Callback methods](./README.md#43-callback-methods) Methods which run in response to events. 4.3 [Callback methods](./README.md#43-callback-methods) Methods which run in response to events.
4.4 [Method](./README.md#44-method) Optional interface to uasyncio code. 4.4 [Method](./README.md#44-method) Optional interface to uasyncio code.
4.5 [Bound variable](./README.md#45-bound-variable) 4.5 [Bound variable](./README.md#45-bound-variable) Control latency caused by garbage collection.
4.6 [Usage](./README.md#46-usage) Accessing data created in a screen. 4.6 [Usage](./README.md#46-usage) Accessing data created in a screen.
5. [Window class](./README.md#5-window-class) 5. [Window class](./README.md#5-window-class)
5.1 [Constructor](./README.md#51-constructor) 5.1 [Constructor](./README.md#51-constructor)
@ -896,7 +897,7 @@ explicitly in code.
before too much garbage has accumulated. However on platforms with SPIRAM GC before too much garbage has accumulated. However on platforms with SPIRAM GC
can take hundreds of ms, causing unacceptable latency. If `do_gc` is `False` can take hundreds of ms, causing unacceptable latency. If `do_gc` is `False`
the application can perform GC at times when fast response to user actions is the application can perform GC at times when fast response to user actions is
not required. not required. If turned off, the GC task cannot be re-started.
## 4.6 Usage ## 4.6 Usage