From 2f26c3c5f1380535c5fdd74cd39962338ed51204 Mon Sep 17 00:00:00 2001
From: xoviat <xoviat@users.noreply.github.com>
Date: Wed, 5 Nov 2025 07:13:15 -0600
Subject: tests: disable rtc for h563 on non-stop

---
 embassy-stm32/Cargo.toml     |  1 +
 embassy-stm32/src/rtc/mod.rs | 15 ++++++++++++++-
 tests/stm32/Cargo.toml       |  2 +-
 tests/stm32/src/bin/rtc.rs   |  4 ++++
 tests/stm32/src/bin/stop.rs  |  1 +
 tests/stm32/src/common.rs    |  2 ++
 6 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/embassy-stm32/Cargo.toml b/embassy-stm32/Cargo.toml
index 7c243b350..7c64c3e17 100644
--- a/embassy-stm32/Cargo.toml
+++ b/embassy-stm32/Cargo.toml
@@ -313,6 +313,7 @@ single-bank = []
 
 ## internal use only
 _split-pins-enabled = []
+_allow-disable-rtc = []
 
 ## internal use only
 _dual-core = []
diff --git a/embassy-stm32/src/rtc/mod.rs b/embassy-stm32/src/rtc/mod.rs
index cbb904fd3..116b3c7ed 100644
--- a/embassy-stm32/src/rtc/mod.rs
+++ b/embassy-stm32/src/rtc/mod.rs
@@ -175,13 +175,21 @@ pub struct RtcConfig {
     ///
     /// A high counter frequency may impact stop power consumption
     pub frequency: Hertz,
+
+    #[cfg(feature = "_allow-disable-rtc")]
+    /// Allow disabling the rtc, even when stop is configured
+    pub _disable_rtc: bool,
 }
 
 impl Default for RtcConfig {
     /// LSI with prescalers assuming 32.768 kHz.
     /// Raw sub-seconds in 1/256.
     fn default() -> Self {
-        RtcConfig { frequency: Hertz(256) }
+        RtcConfig {
+            frequency: Hertz(256),
+            #[cfg(feature = "_allow-disable-rtc")]
+            _disable_rtc: false,
+        }
     }
 }
 
@@ -372,6 +380,11 @@ trait SealedInstance {
 
 #[cfg(feature = "low-power")]
 pub(crate) fn init_rtc(cs: CriticalSection, config: RtcConfig) {
+    #[cfg(feature = "_allow-disable-rtc")]
+    if config._disable_rtc {
+        return;
+    }
+
     crate::time_driver::get_driver().set_rtc(cs, Rtc::new_inner(config));
 
     trace!("low power: stop with rtc configured");
diff --git a/tests/stm32/Cargo.toml b/tests/stm32/Cargo.toml
index e75a4ebb1..b92b47be2 100644
--- a/tests/stm32/Cargo.toml
+++ b/tests/stm32/Cargo.toml
@@ -73,7 +73,7 @@ teleprobe-meta = "1"
 embassy-sync = { version = "0.7.2", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.9.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "defmt"] }
 embassy-time = { version = "0.5.0", path = "../../embassy-time", features = ["defmt", "tick-hz-131_072", "defmt-timestamp-uptime"] }
-embassy-stm32 = { version = "0.4.0", path = "../../embassy-stm32", features = [ "defmt", "unstable-pac", "memory-x", "time-driver-any"]  }
+embassy-stm32 = { version = "0.4.0", path = "../../embassy-stm32", features = [ "defmt", "unstable-pac", "memory-x", "time-driver-any", "_allow-disable-rtc"]  }
 embassy-futures = { version = "0.1.2", path = "../../embassy-futures" }
 embassy-stm32-wpan = { version = "0.1.0", path = "../../embassy-stm32-wpan", optional = true, features = ["defmt", "stm32wb55rg", "ble"] }
 embassy-net = { version = "0.7.1", path = "../../embassy-net", features = ["defmt",  "tcp", "udp", "dhcpv4", "medium-ethernet"] }
diff --git a/tests/stm32/src/bin/rtc.rs b/tests/stm32/src/bin/rtc.rs
index 43cf4a411..eb27af4ca 100644
--- a/tests/stm32/src/bin/rtc.rs
+++ b/tests/stm32/src/bin/rtc.rs
@@ -19,6 +19,10 @@ use embassy_time::Timer;
 async fn main(_spawner: Spawner) {
     let mut config = config();
     config.rcc.ls = LsConfig::default_lse();
+    #[cfg(feature = "stop")]
+    {
+        config.rtc._disable_rtc = false;
+    }
 
     let p = init_with_config(config);
     info!("Hello World!");
diff --git a/tests/stm32/src/bin/stop.rs b/tests/stm32/src/bin/stop.rs
index 4b3a775bb..1fe65d867 100644
--- a/tests/stm32/src/bin/stop.rs
+++ b/tests/stm32/src/bin/stop.rs
@@ -49,6 +49,7 @@ async fn async_main(spawner: Spawner) {
 
     let mut config = Config::default();
     config.rcc.ls = LsConfig::default_lse();
+    config.rtc._disable_rtc = false;
 
     // System Clock seems cannot be greater than 16 MHz
     #[cfg(any(feature = "stm32h563zi", feature = "stm32h503rb"))]
diff --git a/tests/stm32/src/common.rs b/tests/stm32/src/common.rs
index 2bd934d6f..096cce947 100644
--- a/tests/stm32/src/common.rs
+++ b/tests/stm32/src/common.rs
@@ -468,6 +468,8 @@ pub fn config() -> Config {
         config.rcc.apb3_pre = APBPrescaler::DIV1;
         config.rcc.sys = Sysclk::PLL1_P;
         config.rcc.voltage_scale = VoltageScale::Scale0;
+
+        config.rtc._disable_rtc = true;
     }
 
     #[cfg(feature = "stm32h503rb")]
-- 
cgit