Fix REF_TICK value

esp-rs · Apr 10, 2024 · 2426e2a · 2426e2a
1 parent 0d052c3
commit 2426e2a
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Showing 3 changed files with 8 additions and 2 deletions.
diff --git a/esp-hal/src/soc/esp32/mod.rs b/esp-hal/src/soc/esp32/mod.rs
@@ -28,6 +28,8 @@ pub(crate) mod constants {
 
     pub const SOC_DRAM_LOW: u32 = 0x3FFA_E000;
     pub const SOC_DRAM_HIGH: u32 = 0x4000_0000;
+
+    pub const REF_TICK: fugit::HertzU32 = fugit::HertzU32::MHz(1);
 }
 
 /// Function initializes ESP32 specific memories (RTC slow and fast) and

diff --git a/esp-hal/src/soc/esp32s2/mod.rs b/esp-hal/src/soc/esp32s2/mod.rs
@@ -32,6 +32,8 @@ pub(crate) mod constants {
 
     pub const SOC_DRAM_LOW: u32 = 0x3FFB_0000;
     pub const SOC_DRAM_HIGH: u32 = 0x4000_0000;
+
+    pub const REF_TICK: fugit::HertzU32 = fugit::HertzU32::MHz(1);
 }
 
 /// Function initializes ESP32 specific memories (RTC slow and fast) and

diff --git a/esp-hal/src/uart.rs b/esp-hal/src/uart.rs
@@ -88,6 +88,8 @@ const UART_FIFO_SIZE: u16 = 128;
 
 #[cfg(not(any(esp32, esp32s2)))]
 use crate::soc::constants::RC_FAST_CLK;
+#[cfg(any(esp32, esp32s2))]
+use crate::soc::constants::REF_TICK;
 
 /// UART Error
 #[derive(Debug, Clone, Copy, PartialEq)]
@@ -987,8 +989,8 @@ where
     fn change_baud_internal(&self, baudrate: u32, clock_source: ClockSource, clocks: &Clocks) {
         let clk = match clock_source {
             ClockSource::Apb => clocks.apb_clock.to_Hz(),
-            ClockSource::RefTick => 1, /* ESP32(/-S2) TRM, section 3.2.4.2 (6.2.4.2 for S2)
-                                        * (RefTick) */
+            ClockSource::RefTick => REF_TICK.to_Hz(), /* ESP32(/-S2) TRM, section 3.2.4.2
+                                                       * (6.2.4.2 for S2) */
         };
 
         T::register_block().conf0().modify(|_, w| {