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holy shit i think it's deep sleeping

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sigil-03 2025-08-30 13:54:13 -06:00
parent cb73b71ffe
commit 83c2a64f12
1 changed files with 119 additions and 36 deletions
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155
ch32v-insert-coin/src/main.rs
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@ -84,6 +84,73 @@ pub enum SystemState {
Active,
}
/// enter standby (SLEEPDEEP) mode, with WFE enabled.
/// from CH32V003 reference manual 2.3.1:
/// entry:
/// 1. configure core register control bit: SLEEPDEEP=1 | PDDS = 1
/// 2. configure external interrupt register to mask all but EXTI7_0
/// 3. execute WFI or WFE (optionally SEVONPEND) and SLEEPONEXIT
/// * (probably WFI?)
/// exit:
/// 1. any interrupt/event (set in external interrupt register)
unsafe fn enter_standby(pin: usize) {
critical_section::with(|_| {
use hal::pac::Interrupt;
use qingke_rt::CoreInterrupt;
// configure core register control bit (SLEEPDEEP=1 | PDDS=1)
let pfic = &hal::pac::PFIC;
pfic.sctlr().modify(|w| {
// we only want to wake on enabled interrupts
w.set_sevonpend(true);
// we want to enable deep sleep
w.set_sleepdeep(true);
w.set_wfitowfe(true);
w.set_sleeponexit(false);
});
// // disable all exti interrupts
// let exti = &hal::pac::EXTI;
// exti.intenr().write(| w| {
// w.0 = 0x00000000;
// // w.set_mr(pin, true);
// // w.set_mr(pin, true);
// });
// // clear all pending exti interrupts
// let bits = 0xFFFFFFFF;
// exti.intfr().write(|w| w.0 = bits);
// // enable all exti interrupts
// let exti = &hal::pac::EXTI;
// exti.intenr().write(| w| {
// w.0 = 0x00FFFFFF;
// // w.set_mr(pin, true);
// // w.set_mr(pin, true);
// });
unsafe {
// qingke::pfic::disable_interrupt(Interrupt::EXTI7_0 as u8);
// qingke::pfic::disable_interrupt(CoreInterrupt::SysTick as u8);
// qingke::pfic::disable_interrupt(CoreInterrupt::SysTick as u8);
qingke::pfic::enable_interrupt(Interrupt::EXTI7_0 as u8);
}
// execute WFI
println!("WFI CONFIGURED HOPEFULLY");
// core::arch::asm!("wfi");
// pfic.
// qingke::pfic::
});
}
unsafe fn init_gpio_irq(pin: u8, port: u8, rising: bool, falling: bool) {
critical_section::with(|_| {
println!("init_gpio_irq");
@ -135,7 +202,11 @@ fn clear_interrupt (coin_pin: u8, button_pin: u8) {
// Clear pending - Clears the EXTI's line pending bits.
exti.intfr().write(|w| w.0 = bits);
exti.intenr().modify(|w| w.0 = w.0 & !bits);
use hal::pac::Interrupt;
unsafe { qingke::pfic::unpend_interrupt(Interrupt::EXTI7_0 as u8); };
// exti.intenr().modify(|w| w.0 = w.0 & !bits);
exti.intenr().modify(|w| w.set_mr(coin_pin, true)); // enable interrupt
exti.intenr().modify(|w| w.set_mr(button_pin, true)); // enable interrupt
}
@ -297,8 +368,13 @@ fn main() -> ! {
unsafe {
use hal::pac::Interrupt;
// use qingke_rt::CoreInterrupt;
// qingke::pfic::unpend_interrupt(Interrupt::EXTI7_0 as u8);
clear_interrupt(4, 6);
qingke::pfic::enable_interrupt(Interrupt::EXTI7_0 as u8);
// qingke::pfic::enable_interrupt(CoreInterrupt::SysTick as u8);
}
@ -312,41 +388,6 @@ fn main() -> ! {
println!("begin");
loop {
match system_state {
SystemState::DeepSleep => {
// TODO: make this REALLY deep sleep
riscv::asm::wfi();
},
SystemState::Idle => {
},
SystemState::Active => {
tt0.tick();
tt1.tick();
if tt0.need_service() {
interfaces.led0.set_amplitude(led0_dcs[led0_index]);
led0_index += 1;
if led0_index > led0_dcs.len() - 1 {
led0_index = 0;
}
tt0.service();
}
if tt1.need_service() {
interfaces.led1.set_amplitude(led1_dcs[led1_index]);
led1_index += 1;
if led1_index > led1_dcs.len() - 1 {
led1_index = 0;
}
tt1.service()
}
interfaces.service();
},
}
{
// system input servicing
unsafe {
@ -431,6 +472,48 @@ fn main() -> ! {
}
}
match system_state {
SystemState::DeepSleep => {
// TODO: make this REALLY deep sleep
unsafe{enter_standby(4)};
loop {
riscv::asm::wfi();
unsafe{
if INPUT_FLAGS.coin_flag {
break;
}
};
}
},
SystemState::Idle => {
},
SystemState::Active => {
tt0.tick();
tt1.tick();
if tt0.need_service() {
interfaces.led0.set_amplitude(led0_dcs[led0_index]);
led0_index += 1;
if led0_index > led0_dcs.len() - 1 {
led0_index = 0;
}
tt0.service();
}
if tt1.need_service() {
interfaces.led1.set_amplitude(led1_dcs[led1_index]);
led1_index += 1;
if led1_index > led1_dcs.len() - 1 {
led1_index = 0;
}
tt1.service()
}
interfaces.service();
},
}
delay.delay_us(tick_interval_us as u32);
}
}