From 8180abed4c7f71db343b2d7eb4fecb8a4d1b030e Mon Sep 17 00:00:00 2001
From: Stepan Usatiuk <stepan@usatiuk.com>
Date: Sat, 26 Jul 2025 12:18:52 +0200
Subject: [PATCH] shutdown on 3v

---
 Firmware/main/include/shutdowner.hpp | 1 +
 Firmware/main/src/bat_mon.cpp        | 4 ++++
 Firmware/main/src/shutdowner.cpp     | 9 +++++++--
 3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/Firmware/main/include/shutdowner.hpp b/Firmware/main/include/shutdowner.hpp
index 0f3f089..09345fe 100644
--- a/Firmware/main/include/shutdowner.hpp
+++ b/Firmware/main/include/shutdowner.hpp
@@ -10,6 +10,7 @@ class Shutdowner {
 public:
     static Shutdowner& get();
     void install_isr();
+    void shutdown();
 private:
     Shutdowner();
 };
diff --git a/Firmware/main/src/bat_mon.cpp b/Firmware/main/src/bat_mon.cpp
index 3d41304..17edfd8 100644
--- a/Firmware/main/src/bat_mon.cpp
+++ b/Firmware/main/src/bat_mon.cpp
@@ -10,6 +10,7 @@
 #include "freertos/task.h"
 
 #include "i2c_global.hpp"
+#include "shutdowner.hpp"
 
 static i2c_master_dev_handle_t dev_handle;
 
@@ -105,6 +106,9 @@ void BatMon::pooler() {
         _current = regToCurrent(ReadRegister(0x0B));
         _voltage = regToVoltage(ReadRegister(0x09));
         PowerHelper::get().delay(10000, 1000);
+        if (_voltage < 3.0f) {
+            Shutdowner::get().shutdown();
+        }
     }
 }
 
diff --git a/Firmware/main/src/shutdowner.cpp b/Firmware/main/src/shutdowner.cpp
index 7011d98..fd4b176 100644
--- a/Firmware/main/src/shutdowner.cpp
+++ b/Firmware/main/src/shutdowner.cpp
@@ -14,12 +14,17 @@ Shutdowner& Shutdowner::get() {
     return instance;
 }
 
-static void IRAM_ATTR shutdown(void* arg) {
+static void IRAM_ATTR int_shutdown(void* arg) {
     // printf("Shutting down...\n");
     ESP_ERROR_CHECK(gpio_hold_dis(PWR_KILL));
     ESP_ERROR_CHECK(gpio_set_level(PWR_KILL, 0));
 }
 
+void Shutdowner::shutdown() {
+    ESP_ERROR_CHECK(gpio_hold_dis(PWR_KILL));
+    ESP_ERROR_CHECK(gpio_set_level(PWR_KILL, 0));
+}
+
 Shutdowner::Shutdowner() {
     ESP_ERROR_CHECK(gpio_reset_pin(PWR_KILL));
     ESP_ERROR_CHECK(gpio_set_direction(PWR_KILL, GPIO_MODE_OUTPUT));
@@ -36,4 +41,4 @@ Shutdowner::Shutdowner() {
     // gpio_isr_handler_add(PWR_INT, shutdown, nullptr);
 }
 
-void Shutdowner::install_isr() { gpio_isr_handler_add(PWR_INT, shutdown, nullptr); }
+void Shutdowner::install_isr() { gpio_isr_handler_add(PWR_INT, int_shutdown, nullptr); }