fix a bug in sysclock calc

1 files changed, 1 insertions, 1 deletions

diff --git a/src/i2c.rs b/src/i2c.rs
index 8904730..8ccf3af 100644
--- a/src/i2c.rs
+++ b/src/i2c.rs
@@ -43,7 +43,7 @@ impl<'a> I2C<'a> {
             SWSR::PLL => {
                 let pllmull = cfgr.pllmul().bits();
                 let pllsource = cfgr.pllsrc();
-                let pllmull = (pllmull as u32 >> 18) + 2;
+                let pllmull = pllmull as u32 + 2;
                 match pllsource {
                     PLLSRCR::INTERNAL => {
                         (HSI_VALUE >> 1) * pllmull