Add support for Puya PY25Q128HA flash chip

[sensei-hacker]

User description

Summary

Adds detection and support for the Puya PY25Q128HA flash chip, a W25Q128-compatible 128Mbit (16MB) SPI NOR flash commonly found on flight controllers.

Changes

Driver Support (flash_m25p16.c:102-104)

• Added JEDEC ID entry (0x856018) to m25p16FlashConfig[] array for automatic chip detection

Documentation (Blackbox.md:123)

• Added PY25Q128HA to the list of supported flash chips

Technical Details

• JEDEC ID: 0x856018
  • Manufacturer: 0x85 (Puya Semiconductor)
  • Memory Type: 0x60
  • Capacity: 0x18 (128Mbit)
• Geometry: 256 sectors × 256 pages × 256 bytes = 16 MByte
• Command Set: Standard W25Q128-compatible (no driver changes needed)

Testing

The PY25Q128HA uses an identical command set to the W25Q128 and other supported flash chips. The existing M25P16-compatible driver already supports all necessary operations:

• JEDEC ID detection (0x9F)
• Read/write/erase operations
• Standard timing parameters

Compatibility

This is a backwards-compatible change:

• Adds new chip detection only
• No changes to existing driver logic
• No impact on boards without this chip
• Boards with PY25Q128HA will now auto-detect the chip at boot

Files Changed

• src/main/drivers/flash_m25p16.c - Added JEDEC ID entry
• docs/Blackbox.md - Updated documentation

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PR Type

Enhancement

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Description

• Adds JEDEC ID detection for Puya PY25Q128HA flash chip

• Enables automatic chip recognition during initialization

• Updates documentation with new supported flash chip

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Diagram Walkthrough

flowchart LR
  A["Puya PY25Q128HA<br/>JEDEC ID: 0x856018"] -- "Added to detection table" --> B["flash_m25p16FlashConfig[]"]
  B -- "Auto-detection at boot" --> C["Chip Support Enabled"]
  D["Documentation Updated"] -- "Lists supported chips" --> E["Blackbox.md"]

File Walkthrough

	Relevant files
Enhancement	flash_m25p16.c Add Puya PY25Q128HA JEDEC ID to flash config                          src/main/drivers/flash_m25p16.c Added Puya PY25Q128HA JEDEC ID entry (0x856018) to m25p16FlashConfig[] array Included datasheet reference link for the chip Configured with 256 sectors and 256 pages matching W25Q128 geometry +3/-0
Documentation	Blackbox.md Document Puya PY25Q128HA support                                                  docs/Blackbox.md Added Puya PY25Q128HA to the list of supported flash chips Documented chip capacity as 128 Mbit / 16 MByte Maintains consistent formatting with existing chip entries +1/-0

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