ARM serial port basic operation function test (based on LPC2134)-EEWORLD

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/****************************************************************************
# * File name: UART0.h
# * Function: declare related global functions about UART0
# * Version: 1.0
# * Author: jianqi2010
# ****************************************************************************/
void UART_Init(void);
void UART_Send_Byte(char ch);
void UART_Send_String(char* p);
/****************************************************************************
# * File name: UART0.c
# * Function: define global functions related to UART0
# * Version: 1.0
# * Author: jianqi2010
# ****************************************************************************/
#include"UART0.h"
#include"config.h"
#define BAUD 9600 //Baud rate
void UART_Init(void)
{
uint16 Fdiv;
U0LCR = 0x83; // related check bit, data length, etc., DLAB = 1, baud rate can be set
Fdiv=(Fpclk/16)/BAUD;
U0DLM=Fdiv/256;
U0DLL=Fdiv%256;
U0LCR=0X03;
}
/****************************************************************************
# * Name: UART_Send_Char
# * Function: UART0 sends byte function
# * Entry parameters: bytes waiting to be sent
# * Export parameters: None
# ****************************************************************************/
void UART_Send_Byte(char ch)
{
U0THR = ch;
while((U0LSR&0x40)==0); //Wait for data to be sent
}
/****************************************************************************
# * Name: UART_Send_String
# * Function: UART0 sends string function
# * Entry parameter: string to be sent
# * Export parameters: None
# ****************************************************************************/
void UART_Send_String(char* p)
{
while (*p!='/0')
{
UART_Send_Byte(*p++);
}
}
/****************************************************************************
# * File name: main.c
# * Function: Test the sending program of UART0
# * Version: 1.0
# * Author: jianqi2010
# ****************************************************************************/
#include"config.h"
#include"UART0.h"
//Test function
int main(void)
{
BRUSH0=0X05;
IO0DIR = 0x01;
UART_Init();
UART_Send_String("HellowWord");
return 0;
}

Keywords：ARM Reference address：ARM serial port basic operation function test (based on LPC2134)

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