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doc: fix clocks extended usage xosc order

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camrbuss 2022-08-21 02:51:53 -04:00
parent f8bf06cb7f
commit fea35b48bb
1 changed files with 5 additions and 4 deletions
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9
rp2040-hal/src/clocks/mod.rs
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@ -22,13 +22,14 @@
//! let mut watchdog = Watchdog::new(peripherals.WATCHDOG); //! let mut watchdog = Watchdog::new(peripherals.WATCHDOG);
//! const XOSC_CRYSTAL_FREQ: u32 = 12_000_000; // Typically found in BSP crates //! const XOSC_CRYSTAL_FREQ: u32 = 12_000_000; // Typically found in BSP crates
//! //!
//! // Start tick in watchdog
//! watchdog.enable_tick_generation(XOSC_CRYSTAL_FREQ as u8);
//!
//! let mut clocks = ClocksManager::new(peripherals.CLOCKS);
//! // Enable the xosc //! // Enable the xosc
//! let xosc = setup_xosc_blocking(peripherals.XOSC, XOSC_CRYSTAL_FREQ.Hz()).map_err(InitError::XoscErr)?; //! let xosc = setup_xosc_blocking(peripherals.XOSC, XOSC_CRYSTAL_FREQ.Hz()).map_err(InitError::XoscErr)?;
//! //!
//! // Start tick in watchdog
//! watchdog.enable_tick_generation((XOSC_CRYSTAL_FREQ / 1_000_000) as u8);
//!
//! let mut clocks = ClocksManager::new(peripherals.CLOCKS);
//!
//! // Configure PLLs //! // Configure PLLs
//! // REF FBDIV VCO POSTDIV //! // REF FBDIV VCO POSTDIV
//! // PLL SYS: 12 / 1 = 12MHz * 125 = 1500MHZ / 6 / 2 = 125MHz //! // PLL SYS: 12 / 1 = 12MHz * 125 = 1500MHZ / 6 / 2 = 125MHz