sawyer/picocalc-os-rs
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add syscall to get time in ms since application start

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sawyer bristol
2025-10-06 18:23:31 -06:00
parent 76c7870a79
commit 38cdfcd549
4 changed files with 36 additions and 15 deletions
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29
abi_sys/src/lib.rs
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@@ -8,20 +8,21 @@ use embedded_graphics::{
use embedded_sdmmc::DirEntry;
use strum::EnumIter;
pub const ABI_CALL_TABLE_COUNT: usize = 9;
pub const ABI_CALL_TABLE_COUNT: usize = 10;
#[derive(Clone, Copy, EnumIter)]
#[repr(u8)]
pub enum CallAbiTable {
PrintString = 0,
SleepMs = 1,
LockDisplay = 2,
DrawIter = 3,
GetKey = 4,
GenRand = 5,
ListDir = 6,
ReadFile = 7,
FileLen = 8,
GetMs = 2,
LockDisplay = 3,
DrawIter = 4,
GetKey = 5,
GenRand = 6,
ListDir = 7,
ReadFile = 8,
FileLen = 9,
}
pub type EntryFn = fn();
@@ -39,15 +40,23 @@ pub extern "C" fn print(ptr: *const u8, len: usize) {
f(ptr, len);
}
pub type SleepAbi = extern "C" fn(ms: u64);
pub type SleepMsAbi = extern "C" fn(ms: u64);
#[unsafe(no_mangle)]
pub extern "C" fn sleep(ms: u64) {
let f: SleepAbi =
let f: SleepMsAbi =
unsafe { core::mem::transmute(CALL_ABI_TABLE[CallAbiTable::SleepMs as usize]) };
f(ms);
}
pub type GetMsAbi = extern "C" fn() -> u64;
#[unsafe(no_mangle)]
pub extern "C" fn get_ms() -> u64 {
let f: GetMsAbi = unsafe { core::mem::transmute(CALL_ABI_TABLE[CallAbiTable::GetMs as usize]) };
f()
}
pub type LockDisplay = extern "C" fn(lock: bool);
#[unsafe(no_mangle)]