From cbedd72993dc2e7b32e32a9c8243a8dffa9016aa Mon Sep 17 00:00:00 2001
From: Kevin Brosius <cobra@compuserve.com>
Date: Sun, 23 Feb 2025 18:52:17 -0500
Subject: [PATCH] Seeed ESP32S3 - enable button sleep, stopRadio at sleep to
 sleep sx1262 also.

---
 Boards.h           |  6 ++++--
 RNode_Firmware.ino |  3 ++-
 sx126x.cpp         | 12 +++++++-----
 3 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/Boards.h b/Boards.h
index 112d2c9..f93790f 100644
--- a/Boards.h
+++ b/Boards.h
@@ -620,8 +620,10 @@
       #define HAS_EEPROM true
 
       #define HAS_INPUT true
-      #define HAS_SLEEP false
-      
+      #define HAS_SLEEP true
+      #define PIN_WAKEUP GPIO_NUM_21
+      #define WAKEUP_LEVEL 0
+
 //      #define PMU_IRQ 40
 //      #define I2C_SCL 41
 //      #define I2C_SDA 42
diff --git a/RNode_Firmware.ino b/RNode_Firmware.ino
index c2b9886..79bff2f 100644
--- a/RNode_Firmware.ino
+++ b/RNode_Firmware.ino
@@ -1612,7 +1612,7 @@ void loop() {
 void sleep_now() {
   #if HAS_SLEEP == true
     #if PLATFORM == PLATFORM_ESP32
-      #if BOARD_MODEL == BOARD_T3S3
+      #if BOARD_MODEL == BOARD_T3S3 || BOARD_MODEL == BOARD_SEEED_XIAO_ESP32S3
         display_intensity = 0;
         update_display(true);
       #endif
@@ -1626,6 +1626,7 @@ void sleep_now() {
           delay(100);
         }
       #endif
+      stopRadio();
       esp_sleep_enable_ext0_wakeup(PIN_WAKEUP, WAKEUP_LEVEL);
       esp_deep_sleep_start();
     #elif PLATFORM == PLATFORM_NRF52
diff --git a/sx126x.cpp b/sx126x.cpp
index ebbde43..68bf7b1 100644
--- a/sx126x.cpp
+++ b/sx126x.cpp
@@ -122,17 +122,19 @@ sx126x::sx126x() :
 { setTimeout(0); }
 
 bool sx126x::preInit() {
-//        delay(300);
-        //LoRa->reset();
-//        reset();
-//        delay(100);
+  #if BOARD_MODEL == BOARD_SEEED_XIAO_ESP32S3
+    // Improve wakeup from sleep
+    delay(300);
+    reset();
+    delay(100);
+  #endif
 
   pinMode(_ss, OUTPUT);
   digitalWrite(_ss, HIGH);
   
   #if BOARD_MODEL == BOARD_T3S3 || BOARD_MODEL == BOARD_HELTEC32_V3 || BOARD_MODEL == BOARD_TDECK
     SPI.begin(pin_sclk, pin_miso, pin_mosi, pin_cs);
-  #elif BOARD_MODEL == BOARD_TECHO  // || BOARD_MODEL == BOARD_SEEED_XIAO_ESP32S3
+  #elif BOARD_MODEL == BOARD_TECHO
     SPI.setPins(pin_miso, pin_sclk, pin_mosi);
     SPI.begin();
   #else