diff --git a/src/adc.rs b/src/adc.rs
index eaabcae..d79418b 100644
--- a/src/adc.rs
+++ b/src/adc.rs
@@ -1,12 +1,10 @@
-//! ADC
-//!
-//! Max clock: 14MHz for CHFV2x_V3x
+//! ADC, Analog to Digital Converter
 
 #![macro_use]
 
-use ch32_metapac::adc::vals;
 use embassy_sync::waitqueue::AtomicWaker;
 
+use crate::pac::adc::vals;
 pub use crate::pac::adc::vals::SampleTime;
 use crate::{into_ref, peripherals, Peripheral};
 
diff --git a/src/i2c.rs b/src/i2c.rs
index 1277d99..fb1e136 100644
--- a/src/i2c.rs
+++ b/src/i2c.rs
@@ -138,8 +138,6 @@ impl<'d, T: Instance, TXDMA, RXDMA> I2c<'d, T, TXDMA, RXDMA> {
         // CH32V2, CH32V3
         scl.set_as_af_output(AFType::OutputOpenDrain, Speed::High);
         sda.set_as_af_output(AFType::OutputOpenDrain, Speed::High);
-        //sda.set_as_af_output(AFType::OutputPushPull, Speed::High);
-        //scl.set_as_af_output(AFType::OutputPushPull, Speed::High);
 
         let mut this = Self {
             _peri: peri,