From baeebe930d7bab2bf059796fa3f97a094b080b93 Mon Sep 17 00:00:00 2001
From: Neucrack <CZD666666@gmail.com>
Date: Wed, 13 Aug 2025 20:03:01 +0800
Subject: [PATCH] make sure sys.cpu_freq have return value cpu0

---
 components/basic/src/maix_sys.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/components/basic/src/maix_sys.cpp b/components/basic/src/maix_sys.cpp
index 5697f3bf..32d8e895 100644
--- a/components/basic/src/maix_sys.cpp
+++ b/components/basic/src/maix_sys.cpp
@@ -567,7 +567,9 @@ namespace maix::sys
 
     std::map<std::string, unsigned long> cpu_freq()
     {
+        static unsigned long last_freq = 0;
         std::map<std::string, unsigned long> res;
+        res["cpu0"] = last_freq;
 #if PLATFORM_MAIXCAM
         /* format:
                                  enable  prepare  protect                                duty
@@ -631,12 +633,15 @@ namespace maix::sys
             }
         }
 #endif
+        last_freq = res["cpu0"];
         return res;
     }
 
     std::map<std::string, float> cpu_temp()
     {
+        static unsigned long last_temp = 0;
         std::map<std::string, float> res;
+        res["cpu"] = last_temp;
         FILE *file = fopen("/sys/class/thermal/thermal_zone0/temp", "r");
         if (!file)
         {
@@ -650,6 +655,7 @@ namespace maix::sys
         }
         fclose(file);
         res["cpu"] = temp / 1000.0;
+        last_temp = res["cpu"];
         return res;
     }