embassy-rp

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rp235xa

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embassy_rp::rom_data

Function flash_enter_cmd_xip

Source
pub unsafe extern "C" fn flash_enter_cmd_xip()
Expand description

Configure the QMI to generate a standard 03h serial read command, with 24 address bits, upon each XIP access.

This is a slow XIP configuration, but is widely supported. CLKDIV is set to 12. The debugger may call this function to ensure that flash is readable following a program/erase operation.

Note that the same setup is performed by flash_exit_xip(), and the RP2350 flash program/erase functions do not leave XIP in an inaccessible state, so calls to this function are largely redundant. It is provided for compatibility with RP2040.

Supported architectures: ARM-S, RISC-V

ยงSafety

This is a low-level C function. It may be difficult to call safely from Rust. If in doubt, check the rp235x datasheet for details and do your own safety evaluation.