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stm32 i2c v2: rename freq to frequency

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This commit is contained in:
Süha Ünüvar 2025-08-08 23:14:08 +08:00
parent 8b65101a7c
commit d5bf29a303
1 changed files with 5 additions and 5 deletions
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10
embassy-stm32/src/i2c/v2.rs
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@ -1320,9 +1320,9 @@ struct Timings {
}
impl Timings {
fn new(i2cclk: Hertz, freq: Hertz) -> Self {
fn new(i2cclk: Hertz, frequency: Hertz) -> Self {
let i2cclk = i2cclk.0;
let freq = freq.0;
let frequency = frequency.0;
// Refer to RM0433 Rev 7 Figure 539 for setup and hold timing:
//
// t_I2CCLK = 1 / PCLK1
@ -1332,13 +1332,13 @@ impl Timings {
//
// t_SYNC1 + t_SYNC2 > 4 * t_I2CCLK
// t_SCL ~= t_SYNC1 + t_SYNC2 + t_SCLL + t_SCLH
let ratio = i2cclk / freq;
let ratio = i2cclk / frequency;
// For the standard-mode configuration method, we must have a ratio of 4
// or higher
assert!(ratio >= 4, "The I2C PCLK must be at least 4 times the bus frequency!");
let (presc_reg, scll, sclh, sdadel, scldel) = if freq > 100_000 {
let (presc_reg, scll, sclh, sdadel, scldel) = if frequency > 100_000 {
// Fast-mode (Fm) or Fast-mode Plus (Fm+)
// here we pick SCLL + 1 = 2 * (SCLH + 1)
@ -1352,7 +1352,7 @@ impl Timings {
let sclh = ((ratio / presc) - 3) / 3;
let scll = (2 * (sclh + 1)) - 1;
let (sdadel, scldel) = if freq > 400_000 {
let (sdadel, scldel) = if frequency > 400_000 {
// Fast-mode Plus (Fm+)
assert!(i2cclk >= 17_000_000); // See table in datsheet