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 +1,62 @@
+/********************************** (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
+ Get system-HCLK-AHB1-AHB2 clock routine:
+ MCO(PA8)
+ This example demonstrates MCO(PA8) pin output system clock and get clock;
+    -RCC_GetClocksFreq() function to get systemclk-HCLK-AHB1-AHB2 clock
+    -SystemCoreClockUpdate() function to get HCLK clock
+    -Configure the HSE two-way frequency division as the PLL source in
+    the system_ch32v20x.c file (applicable only to CH32V20x_D8W)
+
+*/
+
+#include "debug.h"
+
+/*********************************************************************
+ * @fn      main
+ *
+ * @brief   Main program.
+ *
+ * @return  none
+ */
+int main(void)
+{
+    GPIO_InitTypeDef  GPIO_InitStructure={0};
+    RCC_ClocksTypeDef RCC_ClocksStatus={0};
+
+    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);
+    USART_Printf_Init(115200);
+    SystemCoreClockUpdate();
+    printf("SystemClk:%d\r\n",SystemCoreClock);
+
+    RCC_GetClocksFreq(&RCC_ClocksStatus);
+    printf("SYSCLK_Frequency-%d\r\n", RCC_ClocksStatus.SYSCLK_Frequency);
+    printf("HCLK_Frequency-%d\r\n", RCC_ClocksStatus.HCLK_Frequency);
+    printf("PCLK1_Frequency-%d\r\n", RCC_ClocksStatus.PCLK1_Frequency);
+    printf("PCLK2_Frequency-%d\r\n", RCC_ClocksStatus.PCLK2_Frequency);
+
+
+    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
+
+    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
+    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
+    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+    GPIO_Init(GPIOA, &GPIO_InitStructure);
+
+    /* MCO Output GPIOA 8 */
+    RCC_MCOConfig( RCC_MCO_SYSCLK );
+
+    while(1);
+}