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Ignore the clock number for enable bit search

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The number has different meanings depending on family:
stm32f0: RCC_APB2ENR - APB peripheral clock enable register 2    CLOCK: APB1
stm32f4: RCC_APB2ENR - RCC APB2 peripheral clock enable register CLOCK: APB2

Ignore the clock number and search all registers for a matching enable bit.
This commit is contained in:
Timo Kröger 2021-07-30 14:30:32 +02:00
parent fba8b86005
commit 4e47b15daf
1 changed files with 14 additions and 4 deletions
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18
stm32-metapac-gen/src/lib.rs
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@ -441,21 +441,31 @@ pub fn gen(options: Options) {
};
if let Some(clock_prefix) = clock_prefix {
// Ignore the numbers in clock name when searching for enable bits because clock
// names do not map cleanly to regsiter names.
// Example:
// stm32f0: RCC_APB2ENR - APB peripheral clock enable register 2 CLOCK: APB1
// stm32f4: RCC_APB2ENR - RCC APB2 peripheral clock enable register CLOCK: APB2
//
// Search for the enable bit in all available registers to support the stm32f0 case.
let search_clock_prefix = clock_prefix.trim_end_matches(char::is_numeric);
// Workaround for clock registers being split on some chip families. Assume fields are
// named after peripheral and look for first field matching and use that register.
let mut en = find_reg_for_field(&rcc, clock_prefix, &format!("{}EN", name));
let mut en =
find_reg_for_field(&rcc, search_clock_prefix, &format!("{}EN", name));
let mut rst =
find_reg_for_field(&rcc, clock_prefix, &format!("{}RST", name));
find_reg_for_field(&rcc, search_clock_prefix, &format!("{}RST", name));
if en.is_none() && name.ends_with("1") {
en = find_reg_for_field(
&rcc,
clock_prefix,
search_clock_prefix,
&format!("{}EN", &name[..name.len() - 1]),
);
rst = find_reg_for_field(
&rcc,
clock_prefix,
search_clock_prefix,
&format!("{}RST", &name[..name.len() - 1]),
);
}