5370afb1eb
* Build examples in debug mode * Allow building psram examples in debug mode in CI * Don't rebuild tests, try to avoid rebuilding dependencies
56 lines
1.3 KiB
Rust
56 lines
1.3 KiB
Rust
//! This shows how to use PSRAM as heap-memory via esp-alloc
|
|
//!
|
|
//! You need an ESP32, ESP32-S2 or ESP32-S3 with at least 2 MB of PSRAM memory.
|
|
|
|
//% CHIPS: esp32 esp32s2 esp32s3
|
|
//% FEATURES: psram-2m
|
|
|
|
#![no_std]
|
|
#![no_main]
|
|
|
|
extern crate alloc;
|
|
|
|
use alloc::{string::String, vec::Vec};
|
|
|
|
use esp_backtrace as _;
|
|
use esp_hal::{prelude::*, psram};
|
|
use esp_println::println;
|
|
|
|
#[global_allocator]
|
|
static ALLOCATOR: esp_alloc::EspHeap = esp_alloc::EspHeap::empty();
|
|
|
|
fn init_psram_heap() {
|
|
unsafe {
|
|
ALLOCATOR.init(psram::psram_vaddr_start() as *mut u8, psram::PSRAM_BYTES);
|
|
}
|
|
}
|
|
|
|
#[cfg(is_not_release)]
|
|
compile_error!("PSRAM example must be built in release mode!");
|
|
|
|
#[entry]
|
|
fn main() -> ! {
|
|
let peripherals = esp_hal::init(esp_hal::Config::default());
|
|
|
|
psram::init_psram(peripherals.PSRAM);
|
|
init_psram_heap();
|
|
|
|
println!("Going to access PSRAM");
|
|
let mut large_vec = Vec::<u32>::with_capacity(500 * 1024 / 4);
|
|
|
|
for i in 0..(500 * 1024 / 4) {
|
|
large_vec.push((i & 0xff) as u32);
|
|
}
|
|
|
|
println!("vec size = {} bytes", large_vec.len() * 4);
|
|
println!("vec address = {:p}", large_vec.as_ptr());
|
|
println!("vec[..100] = {:?}", &large_vec[..100]);
|
|
|
|
let string = String::from("A string allocated in PSRAM");
|
|
println!("'{}' allocated at {:p}", &string, string.as_ptr());
|
|
|
|
println!("done");
|
|
|
|
loop {}
|
|
}
|