firmware for my Touchscreen E-Paper Input Module for Framework Laptop 16
eepy: add GetTimeMicros syscall
author
arthomnix
date
(Feb 6, 2025, 6:19 PM UTC)
commit
95a717d7
95a717d70060588697b97a9b99e877f849e99d15
parent
0060e136
0060e1361a42aa69f932a044846a3af30d8f8254
+25
-1
+16
eepy-sys/src/misc.rs
+16
eepy-sys/src/misc.rs
···
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pub enum MiscSyscall {
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GetSerial = 0,
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LogMessage = 1,
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GetTimeMicros = 2,
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}
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#[repr(usize)]
···
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pub fn error(message: &str) {
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log(message, LogLevel::Error);
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}
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pub fn get_time_micros() -> u64 {
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let mut low_word: u32;
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let mut high_word: u32;
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unsafe {
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syscall!(
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SyscallNumber::Misc,
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out high_word in MiscSyscall::GetTimeMicros,
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out low_word,
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)
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}
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((high_word as u64) << 32) | low_word as u64
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}
+9
-1
eepy/src/syscall.rs
+9
-1
eepy/src/syscall.rs
···
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use defmt::{debug, error, info, trace, warn};
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use eepy_sys::header::{SLOT_SIZE, XIP_BASE};
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use eepy_sys::misc::{LogLevel, MiscSyscall};
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use crate::SERIAL_NUMBER;
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use fw16_epd_bsp::pac::Peripherals;
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use crate::{SERIAL_NUMBER};
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use super::StackFrame;
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pub(super) fn handle_misc(stack_values: &mut StackFrame) {
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match MiscSyscall::from_repr(stack_values.r0) {
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Some(MiscSyscall::GetSerial) => handle_get_serial(stack_values),
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Some(MiscSyscall::LogMessage) => handle_log_message(stack_values),
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Some(MiscSyscall::GetTimeMicros) => handle_get_time_micros(stack_values),
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None => panic!("illegal syscall"),
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}
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}
···
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LogLevel::Warn => warn!("[PROGRAM:{}] {}", slot_n, s),
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LogLevel::Error => error!("[PROGRAM:{}] {}", slot_n, s),
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}
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}
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fn handle_get_time_micros(stack_values: &mut StackFrame) {
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let timer = unsafe { Peripherals::steal() }.TIMER;
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stack_values.r1 = timer.timelr().read().bits() as usize;
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stack_values.r0 = timer.timehr().read().bits() as usize;
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}
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}
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