first submission

2023-02-01 14:19:13 +08:00
parent d534aad004
commit b79c6ac80d
3711 changed files with 745432 additions and 2 deletions
@@ -0,0 +1,115 @@
+/********************************** (C) COPYRIGHT *******************************
+ * File Name          : main.c
+ * Author             : WCH
+ * Version            : V1.0.0
+ * Date               : 2021/06/06
+ * Description        : Main program body.
+*********************************************************************************
+* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
+* Attention: This software (modified or not) and binary are used for 
+* microcontroller manufactured by Nanjing Qinheng Microelectronics.
+*******************************************************************************/
+
+/*
+ *@Note
+ Window watchdog routine:
+ This routine demonstrates that the watchdog is fed between the window 0x40 - 0x5f to
+ prevent the watchdog from being reset.
+
+*/
+
+#include "debug.h"
+
+/* Global define */
+#define WWDG_CNT    0X7F
+
+/* Global Variable */
+
+/*********************************************************************
+ * @fn      WWDG_NVIC_Config
+ *
+ * @brief   WWDG INT init.
+ *
+ * @return  none
+ */
+static void WWDG_NVIC_Config(void)
+{
+    NVIC_InitTypeDef NVIC_InitStructure = {0};
+    NVIC_InitStructure.NVIC_IRQChannel = WWDG_IRQn;
+    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
+    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
+    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
+    NVIC_Init(&NVIC_InitStructure);
+}
+
+/*********************************************************************
+ * @fn      WWDG_Config
+ *
+ * @brief   Configure WWDG.
+ *
+ * @param   tr - The value of the decrement counter(0x7f~0x40)
+ *          wr - Window value(0x7f~0x40)
+ *          prv - Prescaler value
+ *            WWDG_Prescaler_1
+ *            WWDG_Prescaler_2
+ *            WWDG_Prescaler_4
+ *            WWDG_Prescaler_8
+ *
+ * @return  none
+ */
+void WWDG_Config(uint8_t tr, uint8_t wr, uint32_t prv)
+{
+    RCC_APB1PeriphClockCmd(RCC_APB1Periph_WWDG, ENABLE);
+
+    WWDG_SetCounter(tr);
+    WWDG_SetPrescaler(prv);
+    WWDG_SetWindowValue(wr);
+    WWDG_Enable(WWDG_CNT);
+    WWDG_ClearFlag();
+    WWDG_NVIC_Config();
+    WWDG_EnableIT();
+}
+
+/*********************************************************************
+ * @fn      WWDG_Feed
+ *
+ * @brief   Feed WWDG.
+ *
+ * @return  none
+ */
+void WWDG_Feed(void)
+{
+    WWDG_SetCounter(WWDG_CNT);
+}
+/*********************************************************************
+ * @fn      main
+ *
+ * @brief   Main program.
+ *
+ * @return  none
+ */
+int main(void)
+{
+    u8 wwdg_tr, wwdg_wr;
+
+    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
+    Delay_Init();
+    USART_Printf_Init(115200);
+    printf("SystemClk:%d\r\n", SystemCoreClock);
+
+    printf("WWDG Test\r\n");
+    WWDG_Config(0x7f, 0x5f, WWDG_Prescaler_8); /* 48M/8/4096 */
+    wwdg_wr = WWDG->CFGR & 0x7F;
+    while(1)
+    {
+        Delay_Ms(10);
+
+        printf("**********\r\n");
+        wwdg_tr = WWDG->CTLR & 0x7F;
+        if(wwdg_tr < wwdg_wr)
+        {
+            WWDG_Feed();
+        }
+        printf("##########\r\n");
+    }
+}