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Repartitioned flash and improved how firmwares are loaded when flashed seperately

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This commit is contained in:
Dreaded_X 2023-09-01 19:54:13 +02:00
parent 7cda449922
commit ff40ad796f
Signed by: Dreaded_X
GPG Key ID: FA5F485356B0D2D4
4 changed files with 47 additions and 13 deletions
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1
Cargo.lock generated
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@ -1320,6 +1320,7 @@ checksum = "e5ea92a5b6195c6ef2a0295ea818b312502c6fc94dde986c5553242e18fd4ce2"
name = "rp"
version = "0.1.0"
dependencies = [
"cfg-if",
"cortex-m",
"cortex-m-rt",
"crc16",

6
Cargo.toml
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@ -67,6 +67,7 @@ rand = { version = "0.8.5", features = [
"std_rng",
], default-features = false }
serde-json-core = "0.5.1"
cfg-if = "1.0.0"
[patch.crates-io]
embassy-executor = { git = "https://github.com/embassy-rs/embassy" }
@ -82,5 +83,10 @@ rust-mqtt = { path = "../rust-mqtt" }
[build-dependencies]
dotenvy = "0.15"
[features]
# With this feature enabled the cyw43 fiwmares are not included in the build and need to be manually flashed
# This helps speed up development
exclude_firmwares = []
[profile.release]
debug = true

11
memory.x
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@ -1,5 +1,10 @@
MEMORY {
BOOT2 : ORIGIN = 0x10000000, LENGTH = 0x100
FLASH : ORIGIN = 0x10000100, LENGTH = 1024K - 0x100
RAM : ORIGIN = 0x20000000, LENGTH = 256K
BOOT2 : ORIGIN = 0x10000000, LENGTH = 0x100
FLASH : ORIGIN = 0x10000100, LENGTH = 2048K - 0x100 - 256k -8k
FW : ORIGIN = 0x101BE000, LENGTH = 256k
CLM : ORIGIN = 0x101FE000, LENGTH = 8k
RAM : ORIGIN = 0x20000000, LENGTH = 256K
}
__fw_start = ORIGIN(FW);
__clm_start = ORIGIN(CLM);

42
src/main.rs
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@ -131,6 +131,36 @@ async fn uart_rx_task(
}
}
/// Get the cyw43 firmware blobs
///
/// # Safety
/// When building with `exclude_firmwares` make sure to flash the firmwares using the following
/// commands:
/// ```bash
/// probe-rs download firmware/43439A0.bin --format bin --chip RP2040 --base-address 0x101BE000
/// probe-rs download firmware/43439A0_clm.bin --format bin --chip RP2040 --base-address 0x101FE000
/// ```
unsafe fn get_firmware() -> (&'static [u8], &'static [u8]) {
cfg_if::cfg_if! {
if #[cfg(feature = "exclude_firmwares")] {
// TODO: It would be nice if it could automatically get the correct size
extern "C" {
#[link_name = "__fw_start"]
static fw: [u8; 230321];
#[link_name = "__clm_start"]
static clm: [u8; 4752];
}
(&fw, &clm)
} else {
let fw = include_bytes!("../firmware/43439A0.bin");
let clm = include_bytes!("../firmware/43439A0_clm.bin");
(fw, clm)
}
}
}
#[embassy_executor::main]
async fn main(spawner: Spawner) {
info!("Starting...");
@ -148,16 +178,6 @@ async fn main(spawner: Spawner) {
spawner.spawn(uart_rx_task(rx, channel.sender())).unwrap();
// === WIFI ===
// To make flashing faster for development, you may want to flash the firmwares independently
// at hardcoded addresses, instead of baking them into the program with `include_bytes!`:
// probe-rs download firmware/43439A0.bin --format bin --chip RP2040 --base-address 0x10100000
// probe-rs download firmware/43439A0_clm.bin --format bin --chip RP2040 --base-address 0x10140000
let fw = unsafe { core::slice::from_raw_parts(0x10100000 as *const u8, 230321) };
let clm = unsafe { core::slice::from_raw_parts(0x10140000 as *const u8, 4752) };
// let fw = include_bytes!("../firmware/43439A0.bin");
// let clm = include_bytes!("../firmware/43439A0_clm.bin");
let pwr = Output::new(p.PIN_23, Level::Low);
let cs = Output::new(p.PIN_25, Level::High);
@ -172,6 +192,8 @@ async fn main(spawner: Spawner) {
p.DMA_CH0,
);
let (fw, clm) = unsafe { get_firmware() };
let state = make_static!(cyw43::State::new());
let (net_device, mut control, runner) = cyw43::new(state, pwr, spi, fw).await;
spawner.spawn(wifi_task(runner)).unwrap();