NULL

2026-03-20 21:16:58 +08:00
parent 286ff98b8e
commit 90c3d919df
248 changed files with 94554 additions and 0 deletions
--- a/user/MCU/lhl_i2c_soft.c
+++ b/user/MCU/lhl_i2c_soft.c
@@ -0,0 +1,117 @@
+#include "../main/SystemInclude.h"
+
+//##############################################################################
+void SI2C_Init(void)
+{ 
+  SCL_OUT();      
+  SDA_OUT(); 
+  SET_SCL();
+  SET_SDA();
+}
+
+/******************************************************************************/
+void SI2C_Start(void)
+{
+  SCL_OUT();      
+  SDA_OUT();  
+	
+  SET_SDA();                  
+	SET_SCL(); 
+	
+  CLR_SDA(); 
+	
+  SI2C_Delay();                
+	CLR_SCL();
+}
+
+/******************************************************************************/
+void SI2C_Stop(void)
+{
+	CLR_SCL();
+  SI2C_Delay();
+  CLR_SDA(); 
+  SI2C_Delay();                
+	SET_SCL(); 
+  SET_SDA();  
+}
+
+/******************************************************************************/
+void SI2C_Ack(void)
+{
+  CLR_SDA();  
+  SI2C_Delay();         
+	SET_SCL();
+  SI2C_Delay();        
+	CLR_SCL();
+  SI2C_Delay();           
+  SET_SDA();  
+}
+
+/******************************************************************************/
+void SI2C_NoAck(void)
+{
+  SET_SDA();  
+  SI2C_Delay();           
+	SET_SCL();
+  SI2C_Delay();        
+	CLR_SCL();
+}
+
+/******************************************************************************/
+u8 SI2C_TestAck(void)
+{
+  u8 ack;
+
+  SDA_IN();
+	
+	SET_SCL(); 
+  SI2C_Delay(); 
+  ack = READ_SDA();  
+	CLR_SCL();
+  SDA_OUT();
+	
+	if(ack != 0) return 1;
+  return 0;   
+}
+
+/******************************************************************************/
+u8 SI2C_Write(u8 writeData)
+{
+  u32 temp;
+  
+  for(temp=0; temp<8; temp++)
+  {
+		
+    if((writeData & 0x80) == 0) CLR_SDA(); 
+    else                        SET_SDA(); 
+    
+	  SET_SCL();
+    SI2C_Delay();
+    writeData = writeData << 1;
+	  CLR_SCL();
+    SI2C_Delay();
+  }
+  
+  return SI2C_TestAck();
+}
+
+/******************************************************************************/
+u8 SI2C_Read(void)
+{
+  u8 reedByte=0;
+  u32 temp;
+  
+  SDA_IN();  
+  for(temp=0; temp<8; temp++) {
+	  SET_SCL();
+    SI2C_Delay();
+    reedByte <<= 1;
+    
+    if(READ_SDA() != 0) reedByte |= 0x01;
+  	CLR_SCL();
+    SI2C_Delay();
+  }
+  SDA_OUT();
+  
+  return(reedByte);
+}