From 83a764889c3b14f0a4c7b8485df75b06fa583017 Mon Sep 17 00:00:00 2001
From: linuswck <linuswck@m-labs.hk>
Date: Thu, 13 Jun 2024 15:37:41 +0800
Subject: [PATCH] ld_pwr_exc_protector: set smpr to be slowest - reduce noise
 on the analog watchdog

---
 src/laser_diode/ld_pwr_exc_protector.rs | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/laser_diode/ld_pwr_exc_protector.rs b/src/laser_diode/ld_pwr_exc_protector.rs
index 7dfbddf..2b2aa8c 100644
--- a/src/laser_diode/ld_pwr_exc_protector.rs
+++ b/src/laser_diode/ld_pwr_exc_protector.rs
@@ -125,9 +125,10 @@ impl LdPwrExcProtector {
         });
         // Set the Conversion Sequence to include Pd Mon Pin
         pac_adc.sqr3.write(|w| w.sq1().variant(PD_MON_ADC_CH_ID));
-        // Set all sampling channels to have fastest sampling interval
-        pac_adc.smpr1.reset();
-        pac_adc.smpr2.reset();
+
+        // Set all sampling channels to have slowest sampling interval
+        pac_adc.smpr1.write(|w| unsafe { w.bits(0xFFFF) });
+        pac_adc.smpr2.write(|w| unsafe { w.bits(0xFFFF) });
 
         // Set the higher threshold to be max value initially
         pac_adc.htr.write(|w| w.ht().variant(MAX_SAMPLE));