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Use generic boot loader for arduino nano connect

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Fixes #503
This commit is contained in:
Jan Niehusmann 2022-11-28 11:30:52 +00:00
parent 0055dbaf87
commit 1c6a816182
1 changed files with 15 additions and 3 deletions
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18
boards/arduino_nano_connect/src/lib.rs
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@ -5,13 +5,25 @@ pub extern crate rp2040_hal as hal;
#[cfg(feature = "rt")]
pub use rp2040_hal::entry;
//// The linker will place this boot block at the start of our program image. We
//// need this to help the ROM bootloader get our code up and running.
/// The linker will place this boot block at the start of our program image. We
/// need this to help the ROM bootloader get our code up and running.
///
/// According to
/// https://store.arduino.cc/products/arduino-nano-rp2040-connect
/// the board should contain a AT25SF128A flash chip. But
/// there are reports of board with different flash chips,
/// where the boot loader BOOT_LOADER_AT25SF128A does not
/// work. (https://github.com/rp-rs/rp-hal/issues/503)
///
/// Therefore, the generic boot loader is used by default. For a specific
/// board, the flash performance can be increased by switching to the
/// matching boot loader.
#[cfg(feature = "boot2")]
#[link_section = ".boot2"]
#[no_mangle]
#[used]
pub static BOOT2_FIRMWARE: [u8; 256] = rp2040_boot2::BOOT_LOADER_AT25SF128A;
pub static BOOT2_FIRMWARE: [u8; 256] = rp2040_boot2::BOOT_LOADER_GENERIC_03H;
// pub static BOOT2_FIRMWARE: [u8; 256] = rp2040_boot2::BOOT_LOADER_AT25SF128A;
pub use hal::pac;