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//*****************************************************************************
// crp.c
//
// Source file to create CRP word expected by LPCXpresso IDE linker
//*****************************************************************************
//
// Copyright(C) NXP Semiconductors, 2013
// All rights reserved.
//
// Software that is described herein is for illustrative purposes only
// which provides customers with programming information regarding the
// LPC products. This software is supplied " AS IS " without any warranties of
// any kind, and NXP Semiconductors and its licensor disclaim any and
// all warranties, express or implied, including all implied warranties of
// merchantability, fitness for a particular purpose and non-infringement of
// intellectual property rights. NXP Semiconductors assumes no responsibility
// or liability for the use of the software, conveys no license or rights under any
// patent, copyright, mask work right, or any other intellectual property rights in
// or to any products. NXP Semiconductors reserves the right to make changes
// in the software without notification. NXP Semiconductors also makes no
// representation or warranty that such application will be suitable for the
// specified use without further testing or modification.
//
// Permission to use, copy, modify, and distribute this software and its
// documentation is hereby granted, under NXP Semiconductors' and its
// licensor's relevant copyrights in the software, without fee, provided that it
// is used in conjunction with NXP Semiconductors microcontrollers. This
// copyright, permission, and disclaimer notice must appear in all copies of
// this code.
//*****************************************************************************
#if defined (__CODE_RED)
#include & lt; NXP/crp.h & gt;
// Variable to store CRP value in. Will be placed automatically
// by the linker when " Enable Code Read Protect " selected.
// See crp.h header for more information
__CRP const unsigned int CRP_WORD = CRP_NO_CRP ;
#endif
//*****************************************************************************
// +--+
// | ++----+
// +-++ |
// | |
// +-+--+ |
// | +--+--+
// +----+ Copyright (c) 2009 Code Red Technologies Ltd.
//
// UART example header file
//
// Software License Agreement
//
// The software is owned by Code Red Technologies and/or its suppliers, and is
// protected under applicable copyright laws. All rights are reserved. Any
// use in violation of the foregoing restrictions may subject the user to criminal
// sanctions under applicable laws, as well as to civil liability for the breach
// of the terms and conditions of this license.
//
// THIS SOFTWARE IS PROVIDED " AS IS " . NO WARRANTIES, WHETHER EXPRESS, IMPLIED
// OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
// USE OF THIS SOFTWARE FOR COMMERCIAL DEVELOPMENT AND/OR EDUCATION IS SUBJECT
// TO A CURRENT END USER LICENSE AGREEMENT (COMMERCIAL OR EDUCATIONAL) WITH
// CODE RED TECHNOLOGIES LTD.
//
//*****************************************************************************
#ifndef UART_H_
#define UART_H_
// ***********************
// Function to set up UART
void UART0_Init(int baudrate);
// ***********************
// Function to send character over UART
void UART0_Sendchar(char c);
// ***********************
// Function to get character from UART
char UART0_Getchar();
// ***********************
// Function to prints the string out over the UART
void UART0_PrintString(char *pcString);
#endif /*UART_H_*/
//*****************************************************************************
// +--+
// | ++----+
// +-++ |
// | |
// +-+--+ |
// | +--+--+
// +----+ Copyright (c) 2010 Code Red Technologies Ltd.
//
// retarget.c - provides stub routines to allow printf/scanf from Redlib C library
// to carry out I/O over UART
//
// Software License Agreement
//
// The software is owned by Code Red Technologies and/or its suppliers, and is
// protected under applicable copyright laws. All rights are reserved. Any
// use in violation of the foregoing restrictions may subject the user to criminal
// sanctions under applicable laws, as well as to civil liability for the breach
// of the terms and conditions of this license.
//
// THIS SOFTWARE IS PROVIDED " AS IS " . NO WARRANTIES, WHETHER EXPRESS, IMPLIED
// OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
// USE OF THIS SOFTWARE FOR COMMERCIAL DEVELOPMENT AND/OR EDUCATION IS SUBJECT
// TO A CURRENT END USER LICENSE AGREEMENT (COMMERCIAL OR EDUCATIONAL) WITH
// CODE RED TECHNOLOGIES LTD.
//
//*****************************************************************************
#include " uart0.h "
// Include stdio.h to pull in __REDLIB_INTERFACE_VERSION__
#include & lt; stdio.h & gt;
#if (__REDLIB_INTERFACE_VERSION__ & gt; = 20000)
// We are using new Redlib_v2 semihosting interface
#define WRITEFUNC __sys_write
#define READFUNC __sys_readc
#else
// We are using original Redlib semihosting interface
#define WRITEFUNC __write
#define READFUNC __readc
#endif
// Function __write() / __sys_write
//
// Called by bottom level of printf routine within RedLib C library to write
// a character. With the default semihosting stub, this would write the character
// to the debugger console window . But this version writes
// the character to the LPC1768/RDB1768 UART.
int WRITEFUNC (int iFileHandle, char *pcBuffer, int iLength)
{
unsigned int i;
for (i = 0; i & lt; iLength; i++)
{
UART0_Sendchar(pcBuffer[i]); // print each character
}
return iLength;
}
// Function __readc() / __sys_readc
//
// Called by bottom level of scanf routine within RedLib C library to read
// a character. With the default semihosting stub, this would read the character
// from the debugger console window (which acts as stdin). But this version reads
// the character from the LPC1768/RDB1768 UART.
int READFUNC (void)
{
char c = UART0_Getchar();
return (int)c;
}
//*****************************************************************************
// +--+
// | ++----+
// +-++ |
// | |
// +-+--+ |
// | +--+--+
// +----+ Copyright (c) 2009-12 Code Red Technologies Ltd.
//
// Microcontroller Startup code for use with Red Suite
//
// Version : 120126
//
// Software License Agreement
//
// The software is owned by Code Red Technologies and/or its suppliers, and is
// protected under applicable copyright laws. All rights are reserved. Any
// use in violation of the foregoing restrictions may subject the user to criminal
// sanctions under applicable laws, as well as to civil liability for the breach
// of the terms and conditions of this license.
//
// THIS SOFTWARE IS PROVIDED " AS IS " . NO WARRANTIES, WHETHER EXPRESS, IMPLIED
// OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
// USE OF THIS SOFTWARE FOR COMMERCIAL DEVELOPMENT AND/OR EDUCATION IS SUBJECT
// TO A CURRENT END USER LICENSE AGREEMENT (COMMERCIAL OR EDUCATIONAL) WITH
// CODE RED TECHNOLOGIES LTD.
//
//*****************************************************************************
#if defined (__cplusplus)
#ifdef __REDLIB__
#error Redlib does not support C++
#else
//*****************************************************************************
//
// The entry point for the C++ library startup
//
//*****************************************************************************
extern " C " {
extern void __libc_init_array(void);
}
#endif
#endif
#define WEAK __attribute__ ((weak))
#define ALIAS(f) __attribute__ ((weak, alias (#f)))
// Code Red - if CMSIS is being used, then SystemInit() routine
// will be called by startup code rather than in application's main()
#if defined (__USE_CMSIS)
#include " system_LPC17xx.h "
#endif
//*****************************************************************************
#if defined (__cplusplus)
extern " C " {
#endif
//*****************************************************************************
//
// Forward declaration of the default handlers. These are aliased.
// When the application defines a handler (with the same name), this will
// automatically take precedence over these weak definitions
//
//*****************************************************************************
void ResetISR(void);
WEAK void NMI_Handler(void);
WEAK void HardFault_Handler(void);
WEAK void MemManage_Handler(void);
WEAK void BusFault_Handler(void);
WEAK void UsageFault_Handler(void);
WEAK void SVC_Handler(void);
WEAK void DebugMon_Handler(void);
WEAK void PendSV_Handler(void);
WEAK void SysTick_Handler(void);
WEAK void IntDefaultHandler(void);
//*****************************************************************************
//
// Forward declaration of the specific IRQ handlers. These are aliased
// to the IntDefaultHandler, which is a 'forever' loop. When the application
// defines a handler (with the same name), this will automatically take
// precedence over these weak definitions
//
//*****************************************************************************
void WDT_IRQHandler(void) ALIAS(IntDefaultHandler);
void TIMER0_IRQHandler(void) ALIAS(IntDefaultHandler);
void TIMER1_IRQHandler(void) ALIAS(IntDefaultHandler);
void TIMER2_IRQHandler(void) ALIAS(IntDefaultHandler);
void TIMER3_IRQHandler(void) ALIAS(IntDefaultHandler);
void UART0_IRQHandler(void) ALIAS(IntDefaultHandler);
void UART1_IRQHandler(void) ALIAS(IntDefaultHandler);
void UART2_IRQHandler(void) ALIAS(IntDefaultHandler);
void UART3_IRQHandler(void) ALIAS(IntDefaultHandler);
void PWM1_IRQHandler(void) ALIAS(IntDefaultHandler);
void I2C0_IRQHandler(void) ALIAS(IntDefaultHandler);
void I2C1_IRQHandler(void) ALIAS(IntDefaultHandler);
void I2C2_IRQHandler(void) ALIAS(IntDefaultHandler);
void SPI_IRQHandler(void) ALIAS(IntDefaultHandler);
void SSP0_IRQHandler(void) ALIAS(IntDefaultHandler);
void SSP1_IRQHandler(void) ALIAS(IntDefaultHandler);
void PLL0_IRQHandler(void) ALIAS(IntDefaultHandler);
void RTC_IRQHandler(void) ALIAS(IntDefaultHandler);
void EINT0_IRQHandler(void) ALIAS(IntDefaultHandler);
void EINT1_IRQHandler(void) ALIAS(IntDefaultHandler);
void EINT2_IRQHandler(void) ALIAS(IntDefaultHandler);
void EINT3_IRQHandler(void) ALIAS(IntDefaultHandler);
void ADC_IRQHandler(void) ALIAS(IntDefaultHandler);
void BOD_IRQHandler(void) ALIAS(IntDefaultHandler);
void USB_IRQHandler(void) ALIAS(IntDefaultHandler);
void CAN_IRQHandler(void) ALIAS(IntDefaultHandler);
void DMA_IRQHandler(void) ALIAS(IntDefaultHandler);
void I2S_IRQHandler(void) ALIAS(IntDefaultHandler);
void ENET_IRQHandler(void) ALIAS(IntDefaultHandler);
void RIT_IRQHandler(void) ALIAS(IntDefaultHandler);
void MCPWM_IRQHandler(void) ALIAS(IntDefaultHandler);
void QEI_IRQHandler(void) ALIAS(IntDefaultHandler);
void PLL1_IRQHandler(void) ALIAS(IntDefaultHandler);
void USBActivity_IRQHandler(void) ALIAS(IntDefaultHandler);
void CANActivity_IRQHandler(void) ALIAS(IntDefaultHandler);
//*****************************************************************************
//
// The entry point for the application.
// __main() is the entry point for Redlib based applications
// main() is the entry point for Newlib based applications
//
//*****************************************************************************
#if defined (__REDLIB__)
extern void __main(void);
#endif
extern int main(void);
//*****************************************************************************
//
// External declaration for the pointer to the stack top from the Linker Script
//
//*****************************************************************************
extern void _vStackTop(void);
//*****************************************************************************
#if defined (__cplusplus)
} // extern " C "
#endif
//*****************************************************************************
//
// The vector table.
// This relies on the linker script to place at correct location in memory.
//
//*****************************************************************************
extern void (* const g_pfnVectors[])(void);
__attribute__ ((section( " .isr_vector " )))
void (* const g_pfnVectors[])(void) = {
// Core Level - CM3
& _vStackTop, // The initial stack pointer
ResetISR, // The reset handler
NMI_Handler, // The NMI handler
HardFault_Handler, // The hard fault handler
MemManage_Handler, // The MPU fault handler
BusFault_Handler, // The bus fault handler
UsageFault_Handler, // The usage fault handler
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
SVC_Handler, // SVCall handler
DebugMon_Handler, // Debug monitor handler
0, // Reserved
PendSV_Handler, // The PendSV handler
SysTick_Handler, // The SysTick handler
// Chip Level - LPC17
WDT_IRQHandler, // 16, 0x40 - WDT
TIMER0_IRQHandler, // 17, 0x44 - TIMER0
TIMER1_IRQHandler, // 18, 0x48 - TIMER1
TIMER2_IRQHandler, // 19, 0x4c - TIMER2
TIMER3_IRQHandler, // 20, 0x50 - TIMER3
UART0_IRQHandler, // 21, 0x54 - UART0
UART1_IRQHandler, // 22, 0x58 - UART1
UART2_IRQHandler, // 23, 0x5c - UART2
UART3_IRQHandler, // 24, 0x60 - UART3
PWM1_IRQHandler, // 25, 0x64 - PWM1
I2C0_IRQHandler, // 26, 0x68 - I2C0
I2C1_IRQHandler, // 27, 0x6c - I2C1
I2C2_IRQHandler, // 28, 0x70 - I2C2
SPI_IRQHandler, // 29, 0x74 - SPI
SSP0_IRQHandler, // 30, 0x78 - SSP0
SSP1_IRQHandler, // 31, 0x7c - SSP1
PLL0_IRQHandler, // 32, 0x80 - PLL0 (Main PLL)
RTC_IRQHandler, // 33, 0x84 - RTC
EINT0_IRQHandler, // 34, 0x88 - EINT0
EINT1_IRQHandler, // 35, 0x8c - EINT1
EINT2_IRQHandler, // 36, 0x90 - EINT2
EINT3_IRQHandler, // 37, 0x94 - EINT3
ADC_IRQHandler, // 38, 0x98 - ADC
BOD_IRQHandler, // 39, 0x9c - BOD
USB_IRQHandler, // 40, 0xA0 - USB
CAN_IRQHandler, // 41, 0xa4 - CAN
DMA_IRQHandler, // 42, 0xa8 - GP DMA
I2S_IRQHandler, // 43, 0xac - I2S
ENET_IRQHandler, // 44, 0xb0 - Ethernet
RIT_IRQHandler, // 45, 0xb4 - RITINT
MCPWM_IRQHandler, // 46, 0xb8 - Motor Control PWM
QEI_IRQHandler, // 47, 0xbc - Quadrature Encoder
PLL1_IRQHandler, // 48, 0xc0 - PLL1 (USB PLL)
USBActivity_IRQHandler, // 49, 0xc4 - USB Activity interrupt to wakeup
CANActivity_IRQHandler, // 50, 0xc8 - CAN Activity interrupt to wakeup
};
//*****************************************************************************
// Functions to carry out the initialization of RW and BSS data sections. These
// are written as separate functions rather than being inlined within the
// ResetISR() function in order to cope with MCUs with multiple banks of
// memory.
//*****************************************************************************
__attribute__ ((section( " .after_vectors " )))
void data_init(unsigned int romstart, unsigned int start, unsigned int len) {
unsigned int *pulDest = (unsigned int*) start;
unsigned int *pulSrc = (unsigned int*) romstart;
unsigned int loop;
for (loop = 0; loop & lt; len; loop = loop + 4)
*pulDest++ = *pulSrc++;
}
__attribute__ ((section( " .after_vectors " )))
void bss_init(unsigned int start, unsigned int len) {
unsigned int *pulDest = (unsigned int*) start;
unsigned int loop;
for (loop = 0; loop & lt; len; loop = loop + 4)
*pulDest++ = 0;
}
#ifndef USE_OLD_STYLE_DATA_BSS_INIT
//*****************************************************************************
// The following symbols are constructs generated by the linker, indicating
// the location of various points in the " Global Section Table " . This table is
// created by the linker via the Code Red managed linker script mechanism. It
// contains the load address, execution address and length of each RW data
// section and the execution and length of each BSS (zero initialized) section.
//*****************************************************************************
extern unsigned int __data_section_table;
extern unsigned int __data_section_table_end;
extern unsigned int __bss_section_table;
extern unsigned int __bss_section_table_end;
#else
//*****************************************************************************
// The following symbols are constructs generated by the linker, indicating
// the load address, execution address and length of the RW data section and
// the execution and length of the BSS (zero initialized) section.
// Note that these symbols are not normally used by the managed linker script
// mechanism in Red Suite/LPCXpresso 3.6 (Windows) and LPCXpresso 3.8 (Linux).
// They are provide here simply so this startup code can be used with earlier
// versions of Red Suite which do not support the more advanced managed linker
// script mechanism introduced in the above version. To enable their use,
// define " USE_OLD_STYLE_DATA_BSS_INIT " .
//*****************************************************************************
extern unsigned int _etext;
extern unsigned int _data;
extern unsigned int _edata;
extern unsigned int _bss;
extern unsigned int _ebss;
#endif
//*****************************************************************************
// Reset entry point for your code.
// Sets up a simple runtime environment and initializes the C/C++
// library.
//*****************************************************************************
__attribute__ ((section( " .after_vectors " )))
void
ResetISR(void) {
#ifndef USE_OLD_STYLE_DATA_BSS_INIT
//
// Copy the data sections from flash to SRAM.
//
unsigned int LoadAddr, ExeAddr, SectionLen;
unsigned int *SectionTableAddr;
// Load base address of Global Section Table
SectionTableAddr = & __data_section_table;
// Copy the data sections from flash to SRAM.
while (SectionTableAddr & lt; & __data_section_table_end) {
LoadAddr = *SectionTableAddr++;
ExeAddr = *SectionTableAddr++;
SectionLen = *SectionTableAddr++;
data_init(LoadAddr, ExeAddr, SectionLen);
}
// At this point, SectionTableAddr = & __bss_section_table;
// Zero fill the bss segment
while (SectionTableAddr & lt; & __bss_section_table_end) {
ExeAddr = *SectionTableAddr++;
SectionLen = *SectionTableAddr++;
bss_init(ExeAddr, SectionLen);
}
#else
// Use Old Style Data and BSS section initialization.
// This will only initialize a single RAM bank.
unsigned int * LoadAddr, *ExeAddr, *EndAddr, SectionLen;
// Copy the data segment from flash to SRAM.
LoadAddr = & _etext;
ExeAddr = & _data;
EndAddr = & _edata;
SectionLen = (void*)EndAddr - (void*)ExeAddr;
data_init((unsigned int)LoadAddr, (unsigned int)ExeAddr, SectionLen);
// Zero fill the bss segment
ExeAddr = & _bss;
EndAddr = & _ebss;
SectionLen = (void*)EndAddr - (void*)ExeAddr;
bss_init ((unsigned int)ExeAddr, SectionLen);
#endif
#ifdef __USE_CMSIS
SystemInit();
#endif
#if defined (__cplusplus)
//
// Call C++ library initialisation
//
__libc_init_array();
#endif
#if defined (__REDLIB__)
// Call the Redlib library, which in turn calls main()
__main() ;
#else
main();
#endif
//
// main() shouldn't return, but if it does, we'll just enter an infinite loop
//
while (1) {
;
}
}
//*****************************************************************************
// Default exception handlers. Override the ones here by defining your own
// handler routines in your application code.
//*****************************************************************************
__attribute__ ((section( " .after_vectors " )))
void NMI_Handler(void)
{
while(1)
{
}
}
__attribute__ ((section( " .after_vectors " )))
void HardFault_Handler(void)
{
while(1)
{
}
}
__attribute__ ((section( " .after_vectors " )))
void MemManage_Handler(void)
{
while(1)
{
}
}
__attribute__ ((section( " .after_vectors " )))
void BusFault_Handler(void)
{
while(1)
{
}
}
__attribute__ ((section( " .after_vectors " )))
void UsageFault_Handler(void)
{
while(1)
{
}
}
__attribute__ ((section( " .after_vectors " )))
void SVC_Handler(void)
{
while(1)
{
}
}
__attribute__ ((section( " .after_vectors " )))
void DebugMon_Handler(void)
{
while(1)
{
}
}
__attribute__ ((section( " .after_vectors " )))
void PendSV_Handler(void)
{
while(1)
{
}
}
__attribute__ ((section( " .after_vectors " )))
void SysTick_Handler(void)
{
while(1)
{
}
}
//*****************************************************************************
//
// Processor ends up here if an unexpected interrupt occurs or a specific
// handler is not present in the application code.
//
//*****************************************************************************
__attribute__ ((section( " .after_vectors " )))
void IntDefaultHandler(void)
{
while(1)
{
}
}
/*
===============================================================================
Name : main.c
Author : $(author)
Version :
Copyright : $(copyright)
Description : main definition
===============================================================================
*/
#ifdef __USE_CMSIS
#include " LPC17xx.h "
#endif
#include " uart0.h "
#include & lt; stdio.h & gt;
#include & lt; cr_section_macros.h & gt;
int main(void) {
UART0_Init(57600);
printf ( " hello\n " );
volatile static int i = 0 ;
// Enter an infinite loop, just incrementing a counter
while(1) {
i++ ;
}
return 0 ;
}
//*****************************************************************************
// +--+
// | ++----+
// +-++ |
// | |
// +-+--+ |
// | +--+--+
// +----+ Copyright (c) 2009 Code Red Technologies Ltd.
//
// UART example project for RDB1768 development board
//
// Software License Agreement
//
// The software is owned by Code Red Technologies and/or its suppliers, and is
// protected under applicable copyright laws. All rights are reserved. Any
// use in violation of the foregoing restrictions may subject the user to criminal
// sanctions under applicable laws, as well as to civil liability for the breach
// of the terms and conditions of this license.
//
// THIS SOFTWARE IS PROVIDED " AS IS " . NO WARRANTIES, WHETHER EXPRESS, IMPLIED
// OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
// USE OF THIS SOFTWARE FOR COMMERCIAL DEVELOPMENT AND/OR EDUCATION IS SUBJECT
// TO A CURRENT END USER LICENSE AGREEMENT (COMMERCIAL OR EDUCATIONAL) WITH
// CODE RED TECHNOLOGIES LTD.
//
//*****************************************************************************
#include " LPC17xx.h "
// PCUART0
#define PCUART0_POWERON (1 & lt; & lt; 3)
#define PCLK_UART0 6
#define PCLK_UART0_MASK (3 & lt; & lt; 6)
#define IER_RBR 0x01
#define IER_THRE 0x02
#define IER_RLS 0x04
#define IIR_PEND 0x01
#define IIR_RLS 0x03
#define IIR_RDA 0x02
#define IIR_CTI 0x06
#define IIR_THRE 0x01
#define LSR_RDR 0x01
#define LSR_OE 0x02
#define LSR_PE 0x04
#define LSR_FE 0x08
#define LSR_BI 0x10
#define LSR_THRE 0x20
#define LSR_TEMT 0x40
#define LSR_RXFE 0x80
// ***********************
// Function to set up UART
void UART0_Init(int baudrate)
{
int pclk;
unsigned long int Fdiv;
// PCLK_UART0 is being set to 1/4 of SystemCoreClock
pclk = SystemCoreClock / 4;
// Turn on power to UART0
LPC_SC- & gt; PCONP |= PCUART0_POWERON;
// Turn on UART0 peripheral clock
LPC_SC- & gt; PCLKSEL0 & = ~(PCLK_UART0_MASK);
LPC_SC- & gt; PCLKSEL0 |= (0 & lt; & lt; PCLK_UART0); // PCLK_periph = CCLK/4
// Set PINSEL0 so that P0.2 = TXD0, P0.3 = RXD0
LPC_PINCON- & gt; PINSEL0 & = ~0xf0;
LPC_PINCON- & gt; PINSEL0 |= ((1 & lt; & lt; 4) | (1 & lt; & lt; 6));
LPC_UART0- & gt; LCR = 0x83; // 8 bits, no Parity, 1 Stop bit, DLAB=1
Fdiv = ( pclk / 16 ) / baudrate ; // Set baud rate
LPC_UART0- & gt; DLM = Fdiv / 256;
LPC_UART0- & gt; DLL = Fdiv % 256;
LPC_UART0- & gt; LCR = 0x03; // 8 bits, no Parity, 1 Stop bit DLAB = 0
LPC_UART0- & gt; FCR = 0x07; // Enable and reset TX and RX FIFO
}
// ***********************
// Function to send character over UART
void UART0_Sendchar(char c)
{
while( (LPC_UART0- & gt; LSR & LSR_THRE) == 0 ); // Block until tx empty
LPC_UART0- & gt; THR = c;
}
// ***********************
// Function to get character from UART
char UART0_Getchar()
{
char c;
while( (LPC_UART0- & gt; LSR & LSR_RDR) == 0 ); // Nothing received so just block
c = LPC_UART0- & gt; RBR; // Read Receiver buffer register
return c;
}
// ***********************
// Function to prints the string out over the UART
void UART0_PrintString(char *pcString)
{
int i = 0;
// loop through until reach string's zero terminator
while (pcString[i] != 0) {
UART0_Sendchar(pcString[i]); // print each character
i++;
}
}