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This commit is contained in:
Dario Nieuwenhuis
2022-06-12 22:15:44 +02:00
parent 6199bdea71
commit a8703b7598
340 changed files with 1326 additions and 3020 deletions
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18
embassy-rp/src/clocks.rs
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@ -47,11 +47,9 @@ pub unsafe fn init() {
start_xosc();
// Before we touch PLLs, switch sys and ref cleanly away from their aux sources.
c.clk_sys_ctrl()
.modify(|w| w.set_src(ClkSysCtrlSrc::CLK_REF));
c.clk_sys_ctrl().modify(|w| w.set_src(ClkSysCtrlSrc::CLK_REF));
while c.clk_sys_selected().read() != 1 {}
c.clk_ref_ctrl()
.modify(|w| w.set_src(ClkRefCtrlSrc::ROSC_CLKSRC_PH));
c.clk_ref_ctrl().modify(|w| w.set_src(ClkRefCtrlSrc::ROSC_CLKSRC_PH));
while c.clk_ref_selected().read() != 1 {}
// Configure PLLs
@ -135,9 +133,7 @@ unsafe fn start_xosc() {
.write(|w| w.set_freq_range(pac::xosc::vals::CtrlFreqRange::_1_15MHZ));
let startup_delay = (((XOSC_MHZ * 1_000_000) / 1000) + 128) / 256;
pac::XOSC
.startup()
.write(|w| w.set_delay(startup_delay as u16));
pac::XOSC.startup().write(|w| w.set_delay(startup_delay as u16));
pac::XOSC.ctrl().write(|w| {
w.set_freq_range(pac::xosc::vals::CtrlFreqRange::_1_15MHZ);
w.set_enable(pac::xosc::vals::Enable::ENABLE);
@ -145,13 +141,7 @@ unsafe fn start_xosc() {
while !pac::XOSC.status().read().stable() {}
}
unsafe fn configure_pll(
p: pac::pll::Pll,
refdiv: u32,
vco_freq: u32,
post_div1: u8,
post_div2: u8,
) {
unsafe fn configure_pll(p: pac::pll::Pll, refdiv: u32, vco_freq: u32, post_div1: u8, post_div2: u8) {
let ref_freq = XOSC_MHZ * 1_000_000 / refdiv;
let fbdiv = vco_freq / ref_freq;