rust/va108xx-rs
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Improve UART CLK calculation #12

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muellerr merged 3 commits from improve-uart-clk-calc into main 2024-07-04 18:33:10 +02:00
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va108xx-hal/src/uart.rs
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@ -370,7 +370,7 @@ impl<UART: Instance> UartBase<UART> {
let frac = ((sys_clk.raw() % (config.baudrate.raw() * 16)) * 64 let frac = ((sys_clk.raw() % (config.baudrate.raw() * 16)) * 64
+ (config.baudrate.raw() * 8)) + (config.baudrate.raw() * 8))
/ (config.baudrate.raw() * 16); / (config.baudrate.raw() * 16);
// Calculations here are derived from chapter 10.4.4 (p.74) of the datasheet. // Calculations here are derived from chapter 4.8.5 (p.79) of the datasheet.
let x = sys_clk.raw() as f32 / (config.baudrate.raw() * baud_multiplier) as f32; let x = sys_clk.raw() as f32 / (config.baudrate.raw() * baud_multiplier) as f32;
let integer_part = x as u32; let integer_part = x as u32;
self.uart.clkscale().write(|w| unsafe { self.uart.clkscale().write(|w| unsafe {