From c0fd86d6c68ec5f66a4cd5a5ef36bcda7b9e1c0e Mon Sep 17 00:00:00 2001
From: Matthew Tran <0e4ef622@gmail.com>
Date: Sun, 5 Oct 2025 03:16:18 -0500
Subject: nrf: apply FICR.TRIMCNF values

---
 .../nrf5340/src/bin/nrf5340dk_internal_caps.rs     | 30 ++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 examples/nrf5340/src/bin/nrf5340dk_internal_caps.rs

(limited to 'examples')

diff --git a/examples/nrf5340/src/bin/nrf5340dk_internal_caps.rs b/examples/nrf5340/src/bin/nrf5340dk_internal_caps.rs
new file mode 100644
index 000000000..0b1fb852e
--- /dev/null
+++ b/examples/nrf5340/src/bin/nrf5340dk_internal_caps.rs
@@ -0,0 +1,30 @@
+#![no_std]
+#![no_main]
+
+use defmt::info;
+use embassy_executor::Spawner;
+use embassy_nrf::config::{Config, HfclkSource, LfclkSource, LfxoCapacitance};
+use embassy_nrf::pac;
+use {defmt_rtt as _, panic_probe as _};
+
+fn print_xosc32mcaps() {
+    let value = pac::OSCILLATORS.xosc32mcaps().read();
+    info!("XOSC32MCAPS.ENABLE = {}", value.enable());
+    info!("XOSC32MCAPS.CAPVALUE = {}", value.capvalue());
+}
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    info!("Before init:");
+    print_xosc32mcaps();
+
+    let mut config = Config::default();
+    config.hfclk_source = HfclkSource::Internal;
+    config.lfclk_source = LfclkSource::ExternalXtal;
+    config.internal_capacitors.hfxo = None; // keep the value from the FICR
+    config.internal_capacitors.lfxo = Some(LfxoCapacitance::_7pF);
+    let _p = embassy_nrf::init(config);
+
+    info!("After init:");
+    print_xosc32mcaps();
+}
-- 
cgit