添加独立硬件开门狗

inc/main.h

@@ -37,4 +37,6 @@ OF SUCH DAMAGE.
 
 // #define DEBUG_VERBOES
 
+void watchdog_init(void);
+
 #endif /* MAIN_H */

src/main.c

@@ -18,6 +18,21 @@
 uint32_t g_temperature_uint32;
 uint32_t g_eddy_current_value_uint32;
 
+void watchdog_init(void) {
+    /* Enable the LSI clock */
+    rcu_osci_on(RCU_IRC40K);
+    rcu_osci_stab_wait(RCU_IRC40K);
+
+    /* Enable the FWDGT clock */
+    // rcu_periph_clock_enable(RCU_FWDGT);
+
+    /* Configure FWDGT counter clock: 40KHz(IRC40K) / 256 = 0.15625 KHz */
+    fwdgt_config(625, FWDGT_PSC_DIV256); // Set timeout to 4 seconds (625 / 0.15625 KHz)
+
+    /* Enable FWDGT */
+    fwdgt_enable();
+}
+
 /*!
     \brief      main function
     \param[in]  none
@@ -40,13 +55,17 @@ int main(void) {
     /* configure LDC1612 */
     ldc1612_single_ch0_config();
 
+    /* Initialize watchdog */
+    watchdog_init();
+
     while (1) {
-        delay_ms(100);
+        delay_ms(99);
         g_eddy_current_value_uint32 = 0;
         g_temperature_uint32 = 0;
         g_eddy_current_value_uint32 = ldc1612_get_raw_channel_result(CHANNEL_0);
         g_temperature_uint32 = tmp112a_get_raw_channel_result();
         // printf("1");
+        fwdgt_counter_reload();
     }
 }