Initial import of STM32 IoT sensor node

2026-10-19 15:47:18 +08:00
commit a51794b022
100 changed files with 46274 additions and 0 deletions
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+#include "iwdg.h"
+
+// 独立看门狗初始化，参数为重置的时长 ms
+void iwdg_init(int ms)
+{
+    // 开启看门狗，向键寄存器写入 0x5555
+    IWDG->KR = 0x5555;
+    // 设置预分频器为 64 分频
+    IWDG->PR = IWDG_Prescaler_64;
+    // 设置重加载值 ms
+    IWDG->RLR = 40000 / 64 * ms / 1000;
+    // 让看门狗重加载计数值
+    IWDG->KR = 0xAAAA;
+    // 启动看门狗计数
+    IWDG->KR = 0xCCCC;
+
+}
+
+// 喂狗函数
+void iwdg_feed_dog(void)
+{
+    // 让看门狗重加载计数值
+    IWDG->KR = 0xAAAA;
+}
+