chore: snapshot before shared RS485 bus integration

components/evse/evse_manager.c

@@ -22,6 +22,8 @@
 #include "loadbalancer_events.h"
 #include "ocpp_events.h"
 #include "scheduler_events.h"
+#include "evse_link_events.h"
+
 
 static const char *TAG = "EVSE_Manager";
 
@@ -61,6 +63,72 @@ bool evse_sched_is_allowed(void)
     return v;
 }
 
+static void on_evse_link_event(void *arg, esp_event_base_t base, int32_t id, void *data)
+{
+    (void)arg;
+
+    if (base != EVSE_LINK_EVENTS || id != LINK_EVENT_CURRENT_LIMIT_APPLIED || data == NULL)
+        return;
+
+    uint16_t current = *(const uint16_t *)data;
+
+    ESP_LOGI(TAG, "[EVSE-LINK] current limit applied: %uA", current);
+
+    if (current == 0)
+    {
+        bool prev_auth = evse_state_get_authorized();
+
+        portENTER_CRITICAL(&s_mgr_mux);
+        lb_paused = true;
+        lb_prev_authorized = prev_auth;
+        portEXIT_CRITICAL(&s_mgr_mux);
+
+        if (prev_auth)
+        {
+            ESP_LOGI(TAG, "[EVSE-LINK] limit=0A → paused by master");
+            evse_state_set_authorized(false);
+        }
+
+        return;
+    }
+
+    evse_set_runtime_charging_current(current);
+
+    bool was_paused;
+    bool prev_auth;
+    bool local_auth_enabled;
+
+    portENTER_CRITICAL(&s_mgr_mux);
+    was_paused = lb_paused;
+    prev_auth = lb_prev_authorized;
+    local_auth_enabled = auth_enabled;
+    lb_paused = false;
+    lb_prev_authorized = false;
+    portEXIT_CRITICAL(&s_mgr_mux);
+
+    if (was_paused)
+    {
+        bool can_resume =
+            (evse_get_error() == 0) &&
+            evse_config_is_available() &&
+            evse_config_is_enabled() &&
+            evse_sched_is_allowed() &&
+            !evse_is_limit_reached();
+
+        if (!can_resume)
+        {
+            ESP_LOGW(TAG, "[EVSE-LINK] limit=%uA → cannot resume", current);
+            return;
+        }
+
+        if (!local_auth_enabled || prev_auth)
+        {
+            ESP_LOGI(TAG, "[EVSE-LINK] limit=%uA → resuming after master pause", current);
+            evse_state_set_authorized(true);
+        }
+    }
+}
+
 static void evse_manager_handle_auth_on_tick(void)
 {
     bool sched_allowed = evse_sched_is_allowed();
@@ -423,6 +491,10 @@ void evse_manager_init(void)
     ESP_ERROR_CHECK(esp_event_handler_register(LOADBALANCER_EVENTS, ESP_EVENT_ANY_ID, &on_loadbalancer_event, NULL));
     ESP_ERROR_CHECK(esp_event_handler_register(OCPP_EVENTS, ESP_EVENT_ANY_ID, &on_ocpp_event, NULL));
     ESP_ERROR_CHECK(esp_event_handler_register(SCHED_EVENTS, ESP_EVENT_ANY_ID, &on_sched_event, NULL));
+    ESP_ERROR_CHECK(esp_event_handler_register(EVSE_LINK_EVENTS,
+                                           ESP_EVENT_ANY_ID,
+                                           &on_evse_link_event,
+                                           NULL));
 
     ESP_LOGI(TAG, "EVSE Manager inicializado.");