STM8L051F3 寄存器版串口驅動

ID:46381 · 發表于 2019-3-9 20:25

#include "Config.h"

u8 Uart_Receive_Flag=0;
u8 Uart_Send_len=0;
u16 Uart_Receive_len=0;
u8 Uart_Receive_Ack_len=0;    //期望接收到的ACK 長茺
u8 Uart_Send_Buf[UART_SEND_LEN];
u8 Uart_Receive_Buf[UART_RECEIVE_LEN];

void UART1_IO_Config(void)
{

  PA_DDR_DDR3 =0;//輸入
  PA_CR1_C13  =1;//上拉輸入
  PA_CR2_C23 =0;

  PA_ODR_ODR2 =1;
  PA_CR1_C12  =1;//推挽輸出
  PA_CR2_C22  =1;//輸出擺率10M
  PA_DDR_DDR2 =1;//輸出高電平，TX空閑狀態為高電平，如果不設置，會莫名奇妙的發送0x00

//開啟引腳的UART功能

//00: USART1_TX on PC3 and USART1_RX on PC2

//01: USART1_TX on PA2 and USART1_RX on PA3

//10: USART1_TX on PC5 and USART1_RX on PC6

SYSCFG_RMPCR1_USART1TR_REMAP =1;//PC2，PC3    這個要搞懂
//如果需要使用其他引腳作為串口發送接收引腳，請在這里選擇

}
void UART1_CLK_EN()
{
  CLK_PCKENR1_PCKEN15=1;//開啟USART外設時鐘
}
void UART1_CLK_DIS()
{
  CLK_PCKENR1_PCKEN15=0;//開啟USART外設時鐘
}
void UART1_Mode_Config()
{

//設置串口工作方式

USART1_CR1_M =0;//1 start bit，8 data bit，n stop bit

USART1_CR3_STOP0=0;USART1_CR3_STOP1=0;//1 stop bit

//設置波特率

//波特率設置為9600

// 2000000/9600=208 //2000000是此時系統的主時鐘頻率，默認8分頻，16M/8=2M

//208(DEC)=00D0(HEX)

USART1_BRR2 =0x03;//the BRR2 should be programmed before BRR1

USART1_BRR1 =0x68;

USART1_CR2_TEN=1;//使能發送
// USART1_CR2_TIEN=0;//打開發送中斷
USART1_CR2_REN=1;//使能接收.
USART1_CR2_RIEN=1;//打開接收中斷

}
void UART1_NVID_Config()
{

}

void UART1_Config()
{
  UART1_IO_Config();
  UART1_CLK_EN();
  UART1_Mode_Config();// 9600 8 1  發送接收接收中斷
  UART1_NVID_Config();
}
void Uart1_Send_Data(unsigned char  data)
{
  while(0    ==    USART1_SR_TXE);       //判斷發送數據寄存器是否為空
  USART1_DR    =    data;             //向發送寄存器寫入數據
}
void Uart1_Send_String(u8 *data,u8 len,u8 enter_en)
{

u8 i=0;

for(i=0;i<len;i++)
{
  Uart1_Send_Data(data[i]);
}
if(ENTER_EN       ==    enter_en )
{
  Uart1_Send_Data(0x0D);
  Uart1_Send_Data(0x0A);
}
}
void UART_Receive_Buf_Clear()
{

  Uart_Receive_len    =    0;
  Uart_Receive_Flag    =    0;
}
void Send_ADC_Value(void)
{
  Uart1_Send_String("val= ",5,ENTER_DIS);
  Uart1_Send_Data(VDD_Value1/10 +0x30);
  Uart1_Send_Data(VDD_Value1%10 +0x30);
  Uart1_Send_String("V",1,ENTER_EN);
}

#pragma vector=USART_T_TXE_vector

__interrupt void USART_TX_ISR (void)

{
  if(USART1_SR_TC==1);

}

#pragma vector=USART_R_RXNE_vector

__interrupt void USART_RX_ISR(void)

{
  u8 ch;
  if(1  ==    USART1_SR_RXNE)

  {
   Uart_Receive_Flag       |=    TRUE;
   if(0x8000 !=    (Uart_Receive_len&0x8000))
   {
      Uart_Receive_Buf[Uart_Receive_len++]       =    USART1_DR;
      if((Uart_Receive_len>=UART_RECEIVE_LEN)||(Uart_Receive_len>=Uart_Receive_Ack_len))
      {
      Uart_Receive_len    |=    0x8000;
      }
   }
   else
   {
   ch       =    USART1_DR;
   }
  }

}

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STM8L051F3 寄存器版 串口驅動

STM8L051F3 寄存器版串口驅動