Created
April 4, 2023 13:31
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basic PAC blinky for ch32v003
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[package] | |
name = "hello-wch" | |
version = "0.1.0" | |
edition = "2021" | |
[dependencies] | |
panic-halt = "0.2.0" | |
riscv-rt = "0.11.0" | |
embedded-hal = "0.2.7" | |
[patch.crates-io] | |
riscv-rt = { git = "https://github.com/9names/riscv-rt", branch = "rv32e" } | |
[dependencies.ch32v0] | |
version = "0.1.6" | |
features = ["ch32v003", "critical-section"] | |
[dependencies.riscv] | |
version = "0.10.1" | |
features = ["critical-section-single-hart"] | |
[profile.dev] | |
codegen-units = 1 | |
opt-level = "z" | |
debug-assertions = false | |
incremental = false | |
overflow-checks = false | |
[profile.release] | |
codegen-units = 1 | |
opt-level = "z" | |
debug-assertions = false | |
incremental = false | |
overflow-checks = false | |
lto = 'fat' |
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[build] | |
target = "riscv32ec-unknown-none-elf" | |
[target.riscv32ec-unknown-none-elf] | |
rustflags = [ | |
"-C", "linker=ld.lld", | |
] | |
# we can't afford much space for debug messages, panic_immediate_abort helps | |
# [unstable] | |
# build-std = ["core", "compiler_builtins"] | |
# build-std-features = ["panic_immediate_abort"] |
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#![no_std] | |
#![no_main] | |
use ch32v0::ch32v003; | |
use panic_halt as _; | |
use riscv_rt::entry; | |
#[entry] | |
fn main() -> ! { | |
// not using take() saves us a panic and some program space | |
// let peripherals = ch32v003::Peripherals::take().unwrap(); | |
let peripherals = unsafe {ch32v003::Peripherals::steal()}; | |
let gpioc = peripherals.GPIOC; | |
let gpiod = peripherals.GPIOD; | |
let rcc = peripherals.RCC; | |
let mut mcycle = riscv::delay::McycleDelay::new(48_000_000); | |
unsafe { | |
// Enable clocks to GPIO banks C and D | |
rcc.apb2pcenr.write_with_zero(|w| { | |
w.iopcen().set_bit(); | |
w.iopden().set_bit(); | |
w | |
}); | |
// Set GPIOs as push-pull outputs, low drive strength | |
gpioc.cfglr.write_with_zero(|w| { | |
w.cnf1().bits(0b00); | |
w.mode1().bits(0b01); | |
w | |
}); | |
// led is on PD6 on nanoch32v003. the debug pin is PD1, if you do a write you'll clear it's mode. | |
// using modify will preserve its value | |
gpiod.cfglr.modify(|_, w| { | |
w.cnf6().bits(0b00); | |
w.mode6().bits(0b01); | |
w | |
}); | |
loop { | |
gpioc.outdr.write_with_zero(|w| w.odr1().set_bit()); | |
// Set GPIO D pin 6 high | |
gpiod.outdr.write_with_zero(|w| w.odr6().set_bit()); | |
riscv::asm::delay(1_000_000); | |
// Set GPIO C pin 1 low | |
gpioc.outdr.write_with_zero(|w| w.odr1().clear_bit()); | |
// Set GPIO D pin 1 low | |
gpiod.outdr.write_with_zero(|w| w.odr6().clear_bit()); | |
riscv::asm::delay(1_000_000); | |
} | |
} | |
} |
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