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Add power management watchdog,

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rework interrupts
This commit is contained in:
Alexander Neuhäuser
2025-12-26 13:48:22 +01:00
parent 36bc1f3315
commit 384c548557
10 changed files with 361 additions and 110 deletions
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34
src/peripherals/gpio.rs
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@@ -1,5 +1,6 @@
use core::result::Result;
use core::result::Result::Ok;
use core::sync::atomic::{compiler_fence, Ordering};
use crate::timer::{delay_nops, sleep_ms};
use crate::{mmio_read, mmio_write};
@@ -8,10 +9,11 @@ const GPFSEL_BASE: u32 = 0x3F20_0000;
const GPSET_BASE: u32 = 0x3F20_001C;
const GPCLR_BASE: u32 = 0x3F20_0028;
const GPLEV_BASE: u32 = 0x3F20_0034;
const GPEDS_BASE: u32 = 0x3F20_0040;
const GPFEN_BASE: u32 = 0x3F20_0058;
const GPPUD: u32 = 0x3F20_0094;
const GPPUDCLK_BASE: u32 = 0x3F20_0098;
const GPREN_BASE: u32 = 0x3F20_004C;
const GPFEN_BASE: u32 = 0x3F20_0058;
#[repr(u8)]
pub enum SpecificGpio {
@@ -48,7 +50,8 @@ pub fn set_gpio_function(gpio: u8, state: GPIOFunction) -> Result<(), &'static s
/// Set the GPIO to high
///
/// Should be used when GPIO function is set to `OUTPUT` via `set_gpio_function`
/// Should be used when GPIO function is set to `OUTPUT` via `set_gpio_function`,
/// otherwise setting is ignored
pub fn gpio_high(gpio: u8) -> Result<(), &'static str> {
let register_index = gpio / 32;
let register_offset = gpio % 32;
@@ -119,7 +122,7 @@ fn gpio_pull_up_down(gpio: u8, val: u32) {
mmio_write(register_addr, 0);
}
/// Get the current status if falling edge detection is set
/// Get the current status of the falling edge detection
pub fn read_falling_edge_detect(gpio: u8) -> bool {
let register_addr = GPFEN_BASE + 4 * (gpio as u32 / 32);
let register_offset = gpio % 32;
@@ -128,7 +131,7 @@ pub fn read_falling_edge_detect(gpio: u8) -> bool {
((current >> register_offset) & 0b1) != 0
}
/// Get the current status if falling edge detection is set
/// Get the current status of the rising edge detection
pub fn read_rising_edge_detect(gpio: u8) -> bool {
let register_addr = GPREN_BASE + 4 * (gpio as u32 / 32);
let register_offset = gpio % 32;
@@ -170,6 +173,29 @@ pub fn set_rising_edge_detect(gpio: u8, enable: bool) {
mmio_write(register_addr, new_val);
}
/// Returns with the interrupt status of an GPIO.
///
/// GPEDS register is used to record level and edge events on the GPIO pins.
/// When an event is triggered by the GPIO, the corresponding bit will be set to 1.
pub fn read_gpio_event_detect_status(id: u32) -> bool {
let register = GPEDS_BASE + (id / 32) * 4;
let register_offset = id % 32;
let val = mmio_read(register) >> register_offset;
(val & 0b1) != 0
}
/// Resets current interrupt status of a GPIO pin.
pub fn reset_gpio_event_detect_status(id: u32) {
let register = GPEDS_BASE + (id / 32) * 4;
let register_offset = id % 32;
mmio_write(register, 0b1 << register_offset);
compiler_fence(Ordering::SeqCst);
}
// TODO: GPHEN,GPLEN,GPAREN,GPAFEN
pub fn blink_gpio(gpio: u8, duration_ms: u64) {
let _ = gpio_high(gpio);