import xmltodict import yaml import re import json import os import toml from collections import OrderedDict from glob import glob abspath = os.path.abspath(__file__) dname = os.path.dirname(abspath) os.chdir(dname) # ======= load chips chips = {} for f in sorted(glob('stm32-data/data/chips/*.yaml')): if 'STM32F4' not in f and 'STM32L4' not in f: continue with open(f, 'r') as f: chip = yaml.load(f, Loader=yaml.CSafeLoader) chip['name'] = chip['name'].lower() chip['features'] = set() family = chip["family"].lower().replace('+', 'p') chip['features'].add(f'_{family}') print(chip['name']) chips[chip['name']] = chip # ======= load GPIO AF gpio_afs = {} for f in sorted(glob('stm32-data/data/gpio_af/*.yaml')): name = f.split('/')[-1].split('.')[0] with open(f, 'r') as f: af = yaml.load(f, Loader=yaml.CSafeLoader) gpio_afs[name] = af # ========= Generate pac/mod.rs with open('src/pac/mod.rs', 'w') as f: for chip in chips.values(): f.write( f'#[cfg_attr(feature="{chip["name"]}", path="{chip["name"]}.rs")]\n') f.write('mod chip;\n') f.write('pub use chip::*;\n') # ========= Generate pac/stm32xxx.rs for chip in chips.values(): print(f'generating {chip["name"]}') with open(f'src/pac/{chip["name"]}.rs', 'w') as f: f.write(""" #![allow(dead_code)] #![allow(unused_imports)] #![allow(non_snake_case)] """) af = gpio_afs[chip['gpio_af']] peripheral_names = [] # USART1, PA5, EXTI8 peripheral_versions = {} # usart -> v1, syscfg -> f4 pins = set() # set of all present pins. PA4, PA5... # TODO this should probably come from the yamls? # We don't want to hardcode the EXTI peripheral addr gpio_base = chip['peripherals']['GPIOA']['address'] gpio_stride = 0x400 f.write(f""" pub fn GPIO(n: usize) -> gpio::Gpio {{ gpio::Gpio((0x{gpio_base:x} + 0x{gpio_stride:x}*n) as _) }} """) # ========= peripherals peripheral_names.extend((f'EXTI{x}' for x in range(16))) for (name, peri) in chip['peripherals'].items(): if 'block' not in peri: continue block = peri['block'] block_mod, block_name = block.rsplit('/') block_mod, block_version = block_mod.rsplit('_') block_name = block_name.capitalize() # Check all peripherals have the same version: it's not OK for the same chip to use both usart_v1 and usart_v2 if old_version := peripheral_versions.get(block_mod): if old_version != block_version: raise Exception(f'Peripheral {block_mod} has two versions: {old_version} and {block_version}') peripheral_versions[block_mod] = block_version # Set features chip['features'].add(f'_{block_mod}') chip['features'].add(f'_{block_mod}_{block_version}') f.write(f'pub const {name}: {block_mod}::{block_name} = {block_mod}::{block_name}(0x{peri["address"]:x} as _);') custom_singletons = False if block_mod == 'usart': f.write(f'impl_usart!({name});') for pin, funcs in af.items(): if pin in pins: if func := funcs.get(f'{name}_RX'): f.write(f'impl_usart_pin!({name}, RxPin, {pin}, {func});') if func := funcs.get(f'{name}_TX'): f.write(f'impl_usart_pin!({name}, TxPin, {pin}, {func});') if func := funcs.get(f'{name}_CTS'): f.write(f'impl_usart_pin!({name}, CtsPin, {pin}, {func});') if func := funcs.get(f'{name}_RTS'): f.write(f'impl_usart_pin!({name}, RtsPin, {pin}, {func});') if func := funcs.get(f'{name}_CK'): f.write(f'impl_usart_pin!({name}, CkPin, {pin}, {func});') if block_mod == 'rng': if 'RNG' in chip['interrupts']: f.write(f'impl_rng!({name}, RNG);') else: f.write(f'impl_rng!({name}, HASH_RNG);') if block_mod == 'spi': clock = peri['clock'] f.write(f'impl_spi!({name}, {clock});') for pin, funcs in af.items(): if pin in pins: if func := funcs.get(f'{name}_SCK'): f.write(f'impl_spi_pin!({name}, SckPin, {pin}, {func});') if func := funcs.get(f'{name}_MOSI'): f.write(f'impl_spi_pin!({name}, MosiPin, {pin}, {func});') if func := funcs.get(f'{name}_MISO'): f.write(f'impl_spi_pin!({name}, MisoPin, {pin}, {func});') if block_mod == 'gpio': custom_singletons = True port = name[4:] port_num = ord(port) - ord('A') assert peri['address'] == gpio_base + gpio_stride*port_num for pin_num in range(16): pin = f'P{port}{pin_num}' pins.add(pin) peripheral_names.append(pin) f.write(f'impl_gpio_pin!({pin}, {port_num}, {pin_num}, EXTI{pin_num});') if block_mod == 'dma': custom_singletons = True for ch_num in range(8): channel = f'{name}_CH{ch_num}' peripheral_names.append(channel) f.write(f'impl_dma_channel!({channel}, {name}, {ch_num});') if not custom_singletons: peripheral_names.append(name) for mod, version in peripheral_versions.items(): f.write(f'pub use regs::{mod}_{version} as {mod};') f.write(f""" mod regs; pub use regs::generic; use embassy_extras::peripherals; peripherals!({','.join(peripheral_names)}); """) # ========= interrupts irq_variants = [] irq_vectors = [] irq_fns = [] irq_declares = [] irqs = {num: name for name, num in chip['interrupts'].items()} irq_count = max(irqs.keys()) + 1 for num, name in irqs.items(): irq_variants.append(f'{name} = {num},') irq_fns.append(f'fn {name}();') irq_declares.append(f'declare!({name});') for num in range(irq_count): if name := irqs.get(num): irq_vectors.append(f'Vector {{ _handler: {name} }},') else: irq_vectors.append(f'Vector {{ _reserved: 0 }},') f.write(f""" pub mod interrupt {{ pub use cortex_m::interrupt::{{CriticalSection, Mutex}}; pub use embassy::interrupt::{{declare, take, Interrupt}}; pub use embassy_extras::interrupt::Priority4 as Priority; #[derive(Copy, Clone, Debug, PartialEq, Eq)] #[allow(non_camel_case_types)] enum InterruptEnum {{ {''.join(irq_variants)} }} unsafe impl cortex_m::interrupt::InterruptNumber for InterruptEnum {{ #[inline(always)] fn number(self) -> u16 {{ self as u16 }} }} {''.join(irq_declares)} }} mod interrupt_vector {{ extern "C" {{ {''.join(irq_fns)} }} pub union Vector {{ _handler: unsafe extern "C" fn(), _reserved: u32, }} #[link_section = ".vector_table.interrupts"] #[no_mangle] pub static __INTERRUPTS: [Vector; {irq_count}] = [ {''.join(irq_vectors)} ]; }} """) # ========= Update Cargo features feature_optional_deps = {} feature_optional_deps['_rng'] = ['rand_core'] features = {} extra_features = set() for name, chip in chips.items(): features[name] = sorted(list(chip['features'])) for feature in chip['features']: extra_features.add(feature) for feature in sorted(list(extra_features)): features[feature] = feature_optional_deps.get(feature) or [] SEPARATOR_START = '# BEGIN GENERATED FEATURES\n' SEPARATOR_END = '# END GENERATED FEATURES\n' with open('Cargo.toml', 'r') as f: cargo = f.read() before, cargo = cargo.split(SEPARATOR_START, maxsplit=1) _, after = cargo.split(SEPARATOR_END, maxsplit=1) cargo = before + SEPARATOR_START + toml.dumps(features) + SEPARATOR_END + after with open('Cargo.toml', 'w') as f: f.write(cargo) # ========= Generate pac/regs.rs os.system('cargo run --manifest-path ../../svd2rust/Cargo.toml -- generate --dir stm32-data/data/registers') os.system('mv lib.rs src/pac/regs.rs') # ========= Update Cargo features os.system('rustfmt src/pac/*')