embassy/embassy-stm32/gen.py

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import sys
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import yaml
import re
import os
import re
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try:
from yaml import CSafeLoader as SafeLoader
except ImportError:
from yaml import SafeLoader
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abspath = os.path.abspath(__file__)
dname = os.path.dirname(abspath)
os.chdir(dname)
data_path = '../stm32-data/data'
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try:
_, chip_name, output_file = sys.argv
except:
raise Exception("Usage: gen.py STM32F429ZI path/to/generated.rs")
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# ======= load chip
chip_name = chip_name.upper()
with open(f'{data_path}/chips/{chip_name}.yaml', 'r') as f:
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chip = yaml.load(f, Loader=SafeLoader)
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# ======= load GPIO AF
with open(f'{data_path}/gpio_af/{chip["gpio_af"]}.yaml', 'r') as f:
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af = yaml.load(f, Loader=SafeLoader)
# ======= Generate!
with open(output_file, 'w') as f:
singletons = [] # USART1, PA5, EXTI8
exti_interrupts = [] # EXTI IRQs, EXTI0, EXTI4_15 etc.
pins = set() # set of all present pins. PA4, PA5...
# ========= peripherals
singletons.extend((f'EXTI{x}' for x in range(16)))
num_dmas = 0
for (name, peri) in chip['peripherals'].items():
if 'block' not in peri:
continue
block = peri['block']
block_mod, block_name_unparsed = block.rsplit('/')
block_mod, block_version = block_mod.rsplit('_')
block_name = ''
for b in block_name_unparsed.split('_'):
block_name += b.capitalize()
custom_singletons = False
if block_mod == 'gpio':
custom_singletons = True
port = name[4:]
port_num = ord(port) - ord('A')
for pin_num in range(16):
pin = f'P{port}{pin_num}'
pins.add(pin)
singletons.append(pin)
if block_mod == 'dma':
custom_singletons = True
for ch_num in range(8):
channel = f'{name}_CH{ch_num}'
singletons.append(channel)
if not custom_singletons:
singletons.append(name)
f.write(f"embassy_extras::peripherals!({','.join(singletons)});")