1  use alloc::string::String as AllocString;
 2  use core::fmt::Write;
 3  
 4  pub fn run() -> AllocString {
 5      let mut out = AllocString::new();
 6      let used = esp_alloc::HEAP.used();
 7      let free = esp_alloc::HEAP.free();
 8      let total = used + free;
 9      let pct = if total > 0 { (used * 100) / total } else { 0 };
10  
11      let _ = write!(out, "\r\n");
12      let _ = write!(
13          out,
14          "  \x1b[33m{:<12}\x1b[0m {:<12} {:<12} {:<12}\r\n",
15          "", "total", "used", "free"
16      );
17      let _ = write!(
18          out,
19          "  \x1b[33m{:<12}\x1b[0m {:<12.1} {:<12.1} {:<12.1}\r\n",
20          "Heap (KiB)",
21          total as f32 / 1024.0,
22          used as f32 / 1024.0,
23          free as f32 / 1024.0,
24      );
25      let _ = write!(out, "  \x1b[33m{:<12}\x1b[0m {}%\r\n", "Usage", pct);
26      let _ = write!(out, "\r\n");
27      out
28  }