AY3891x v2.0.0

What's Changed

• Decrease tDW by @berarma in #3
• Optimized bus control signal timing for all state changes (inspired by above pull request) (merged in #4)
• Clarified README and constructor comments to note that BDIR, BC2, BC1 are required signals for this library to work correctly

Note

• The library API did not change
• The bus control signal timing changed. In particular, the duration of the READ and WRITE signals to the chip will have decreased. On a 16 MHz ATmega 328, the access times changed from about 15 us to 4.5 us
  • This is particularly important for the WRITE case, as most datasheets list a maximum WRITE time (tDW) of 10 us
• Interrupts are disabled for about 4.5 us during a WRITE operation
  • This ensures a consistent WRITE timing
  • Previous versions of this library did not disable interrupts
• These changes should typically have no negative affect on any existing code, but code that is particularly dependent on timing may behave differently with this version

New Contributors

• @berarma made their first contribution in #3

Full Changelog: v1.1.3...v2.0.0

AY3891x Library v1.1.3

Update examples for stm32 and esp compatibility.

No changes to the actual library code.

Full Changelog: v1.1.2...v1.1.3

AY3891x Library v1.1.2

README clarifications, example code cleanup, add arduino-lint action.

Library functionality unchanged from v1.1.1.

Full Changelog: v1.1.1...v1.1.2

AY3891x Library v1.1.1

Documentation changes. No functional or API changes.

Full Changelog: v1.1.0...v1.1.1

AY3891x Library

Declare Notes[] array as PROGMEM to save RAM. Fixes #1.

Note that as of version 1.1.0 of the library, the Notes[] array in AY3891x_sounds.h is defined as PROGMEM. This will require minor changes to any sketches which include this file and use the Notes[] array. See example programs 3 and 5.

AY3891x Library

Fix Example 7 so it closes files when done.

AY3891x Library

Update example 7 to support pressing a button to advance to next song on SD card.
Add hardware implementation info in extras/hardware folder.

AY3891x Library

Add Examples 6 and 7 - chiptunes players.

AY3891x Library

Updates to examples and READMEs. No changes to library functionality.

AY3891x Library

Add register field definitions, update examples to use the definitions instead of literals. No functional changes to library interface.