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2026-08-16 13:13:45 +02:00 · 2022-08-06 13:35:32 +08:00
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+/********************************** (C) COPYRIGHT  *******************************
+ * File Name          : debug.c
+ * Author             : WCH
+ * Version            : V1.0.0
+ * Date               : 2019/10/15
+ * Description        : This file contains all the functions prototypes for UART
+ *                      Printf , Delay functions.
+ * Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
+ * SPDX-License-Identifier: Apache-2.0
+ *******************************************************************************/
+#include "debug.h"
+
+/* Support Printf Function Definition */
+//struct __FILE 
+//{ 
+//	int handle; 
+//}; 
+
+//FILE __stdout;
+
+
+static u8  p_us=0;								   
+static u16 p_ms=0;					
+
+/*********************************************************************
+ * @fn      Delay_Init
+ *
+ * @brief   Initializes Delay Funcation.
+ *
+ * @return  none
+ */	
+void Delay_Init(void)
+{
+	SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK_Div8);	
+	p_us=SystemCoreClock/8000000;			  
+	p_ms=(u16)p_us*1000;					   
+}								    
+
+/*********************************************************************
+ * @fn      Delay_Us
+ *
+ * @brief   Microsecond Delay Time.
+ *
+ * @param   n - Microsecond number.
+ *
+ * @return  None
+ */
+void Delay_Us(u32 n)
+{		
+	u32 i;	
+	
+	SysTick->LOAD=n*p_us; 						  		 
+	SysTick->VAL=0x00;        					
+	SysTick->CTRL|=SysTick_CTRL_ENABLE_Msk ;
+	
+	do
+	{
+		i=SysTick->CTRL;
+	}while((i&0x01)&&!(i&(1<<16)));
+	
+	SysTick->CTRL&=~SysTick_CTRL_ENABLE_Msk;	
+	SysTick->VAL =0X00;     	 
+}
+
+/*********************************************************************
+ * @fn      Delay_Ms
+ *
+ * @brief   Millisecond Delay Time.
+ *
+ * @param   n - Millisecond number.
+ *
+ * @return  None
+ */
+void Delay_Ms(u16 n)
+{	 		  	  
+	u32 i;	
+	
+	SysTick->LOAD=(u32)n*p_ms;				
+	SysTick->VAL =0x00;							
+	SysTick->CTRL|=SysTick_CTRL_ENABLE_Msk ;
+	
+	do
+	{
+		i=SysTick->CTRL;
+	}while((i&0x01)&&!(i&(1<<16)));	
+	
+	SysTick->CTRL&=~SysTick_CTRL_ENABLE_Msk;	
+	SysTick->VAL =0X00;        	    
+} 
+
+
+/*********************************************************************
+ * @fn      fputc
+ *
+ * @brief   Support Printf Function 
+ *
+ * @param   data - UART send Data.
+ *          
+ * @return  data - UART send Data.
+ */
+int fputc(int data, FILE *f)
+{
+#if (DEBUG == DEBUG_UART1)
+  while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);
+	USART_SendData(USART1, (u8) data);
+#elif (DEBUG == DEBUG_UART2)
+  while (USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET);
+  USART_SendData(USART2, (u8) data);	
+#elif (DEBUG == DEBUG_UART3)
+  while (USART_GetFlagStatus(USART3, USART_FLAG_TC) == RESET);	
+  USART_SendData(USART3, (u8) data);	
+#endif
+	
+  return data;
+}
+
+/*********************************************************************
+ * @fn      USART_Printf_Init
+ *
+ * @brief   Initializes the USARTx peripheral.
+ *
+ * @param   baudrate - USART communication baud rate.
+ *
+ * @return  None
+ */
+void USART_Printf_Init(u32 baudrate)
+{
+  GPIO_InitTypeDef GPIO_InitStructure;
+  USART_InitTypeDef USART_InitStructure;
+	
+#if (DEBUG == DEBUG_UART1)	
+  RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA, ENABLE);	
+  
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; 
+  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;	
+  GPIO_Init(GPIOA, &GPIO_InitStructure);
+	
+#elif (DEBUG == DEBUG_UART2)
+  RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
+  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);	
+  
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; 
+  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;	
+  GPIO_Init(GPIOA, &GPIO_InitStructure);
+	
+#elif (DEBUG == DEBUG_UART3)	
+  RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
+  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);	
+  
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; 
+  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;	
+  GPIO_Init(GPIOB, &GPIO_InitStructure);
+	
+#endif	
+   
+  USART_InitStructure.USART_BaudRate = baudrate;
+  USART_InitStructure.USART_WordLength = USART_WordLength_8b;
+  USART_InitStructure.USART_StopBits = USART_StopBits_1;
+  USART_InitStructure.USART_Parity = USART_Parity_No;
+  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
+  USART_InitStructure.USART_Mode = USART_Mode_Tx;
+
+#if (DEBUG == DEBUG_UART1)	
+  USART_Init(USART1, &USART_InitStructure); 
+  USART_Cmd(USART1, ENABLE);  
+	
+#elif (DEBUG == DEBUG_UART2)	
+  USART_Init(USART2, &USART_InitStructure); 
+  USART_Cmd(USART2, ENABLE);
+	
+#elif (DEBUG == DEBUG_UART3)
+  USART_Init(USART3, &USART_InitStructure); 
+  USART_Cmd(USART3, ENABLE);
+	
+#endif	
+}
+
+