The CP-JR ARM7 LPC2368 Board Vs. SD/MMC card

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FatFs Generic FAT File System Module และ Interfacing ARM controllers with Memory-Cards

RTC + interrupt for LPC2368

/****************************************************/

/* Compiler : Keil Realview MDK V4.13a */

/* Target MCU : Philips ARM7-LPC2368 */

/* : X-TAL : 12.00 MHz */

/* : PLL Setup = MSEL(12),NSEL(1) */

/* Create By : Eddy */

/* Last Update : 22/April/2011 */

/* Function : Example Use RCT */

/****************************************************/

// Read/Write Internal RTC of LPC2368

// Display Result on UART0(115200,N,8,1)

#include "LPC23xx.H" // LPC2368 MPU Register

#include // For Used Function printf

#define MASKSEC 0x0000003F // Second 00..59 000000000:00000000:00000000:00xxxxxx

#define MASKMIN 0x00003F00 // Minute 00..59 000000000:00000000:00xxxxxx:00000000

#define MASKHR 0x001F0000 // Hour 00..23 000000000:000xxxxx:00000000:00000000

#define MASKWEEK 0x7000000 // Week 00..6 000000xxx:00000000:00000000:00000000

// Pin I/O LED Control Maskbit

#define LED1 0x02000000 // P3.25(0000 00x0 0000 0000 0000 0000 0000 0000)

#define LED2 0x04000000 // P3.26(0000 0x00 0000 0000 0000 0000 0000 0000)

#define LED1_ON() FIO3CLR = LED1 // LED1 Pin = 0 (ON LED)

#define LED1_OFF() FIO3SET = LED1 // LED1 Pin = 1 (OFF LED)

#define LED2_ON() FIO3CLR = LED2 // LED2 Pin = 0 (ON LED)

#define LED2_OFF() FIO3SET = LED2 // LED2 Pin = 1 (OFF LED)

char alarm=0,sec_change=0;

// UART Buffer

char uart0_buf[]; // "sprint" UART[0] Buffer

/* pototype section */

void init_serial0 (void); // Initil UART-0

void putchar0(char ch); // Put Char To UART-0

char getchar0(void); // Get Char From UART-0

void print_uart0(void); // Print String to UART0

void delay(unsigned long int); // Delay Time Function

void RTC_isr(void) __irq

{

unsigned char Week,Hour,Minute,Second,Last_Second; // RTC Buffer Data

unsigned led;

if (RTC_ILR & 0x00000001)

{

led = FIO3PIN;

FIO3CLR = led&LED1;

FIO3SET = ~led&LED1;

do // Repeat Get Second until Second Change

{

Week = (RTC_CTIME0 & MASKWEEK)>>24; // Read Week

Hour = (RTC_CTIME0 & MASKHR)>>16; // Read Hour

Minute = (RTC_CTIME0 & MASKMIN)>>8; // Read Minute

Second = RTC_CTIME0 & MASKSEC; // Read Second

}

while(Last_Second == Second); // Repeat if Second Not Change

Last_Second = Second; // Update Current Second

//************************************//

// Display Clock = Hour:Minute:Second //

//************************************//

sprintf(uart0_buf,"\r\nReal Time Clock = %2d : %2d : %2d : %2d",Week,Hour,Minute,Second); // Print Message String

print_uart0();

if (Second != 0x00000003)

{

sprintf(uart0_buf,"\nIRQ");

print_uart0();

}

//sec_change=1;

RTC_ILR = 0x00000001;

}

if (RTC_ILR & 0x00000002)

{

//alarm=1;

sprintf(uart0_buf,"\nalarm");

print_uart0();

FIO3SET = LED2;

RTC_ILR = 0x00000002;

}

VICVectAddr = 0x00000000;

}

int main(void)

{

// unsigned char Week,Hour,Minute,Second,Last_Second; // RTC Buffer Data

init_serial0(); // Initilial UART0 = 9600,N,8,1

/*Config Pin GPIO3[26:25]*/

PINSEL7 &= 0xFFC3FFFF; // P3[26:25] = GPIO Function(xxxx xxxx xx00 00xx xxxx xxxx xxxx xxxx)

PINMODE7 &= 0xFFC3FFFF; // Enable Puul-Up on P3[26:25]

FIO3DIR |= LED1; // Set GPIO-3[26:25] = Output(xxxx x11x xxxx xxxx xxxx xxxx xxxx xxxx)

FIO3DIR |= LED2;

RTC_DOW = 3; // Setup Day of Week

RTC_HOUR = 22; // Setup Hour

RTC_MIN = 19; // Setup Minute

RTC_SEC = 5; // Setup Second

RTC_CCR = 0; // Reset All Bit Control

RTC_CCR |= 0x00000010; // CLKSRC = 1 = Used EXT 32.768 KHz

RTC_CCR |= 0x00000002; // Reset Clock

RTC_CCR &= 0xFFFFFFFD; // Release Reset

RTC_CIIR = 0x000000001; // Enable seconds counter interrupt

RTC_ALSEC = 0x00000003; // Set alarm register for 3 seconds

RTC_AMR = 0x000000FE; // Enable seconds Alarm

RTC_CCR |= 0x00000001; // Start RTC Clock

VICVectAddr13 = (unsigned)RTC_isr; //Set the timer ISR vector address

VICVectPriority13 = 0x0000002D; //Set channel

VICIntEnable = 0x00002000; //Enable the interrupt

}

/********************************/

/* Initial UART0 = 115200,N,8,1 */

/********************************/

void init_serial0 (void)

{

PINSEL0 &= 0xFFFFFF0F; // Reset P0.2,P0.3 Pin Config

PINSEL0 |= 0x00000010; // Select P0.2 = TxD(UART0)

PINSEL0 |= 0x00000040; // Select P0.3 = RxD(UART0)

U0LCR = 0x83; // 8 bits, no Parity, 1 Stop bit

U0DLL = 3; // Baud 115200BPS for 12MHz PCLK Clock

U0FDR = 0x67; // Fractional Divider

U0LCR = 0x03; // DLAB = 0

}

/******************************/

/* Write Character To UART[0] */

/******************************/

void putchar0 (char ch)

{

if (ch == '\n')

{

while (!(U0LSR & 0x20)); // Wait TXD Buffer Empty

U0THR = 0x0D; // Write CR

}

while (!(U0LSR & 0x20)); // Wait TXD Buffer Empty

U0THR = ch;

}

/******************************/

/* Get character From UART[0] */

/******************************/

char getchar0()

{

while (!(U0LSR & 0x01)); // Wait RXD Receive Data Ready

return (U0RBR); // Get Receice Data & Return

}

/***************************/

/* Print String to UART[0] */

/***************************/

void print_uart0(void)

{

char *p; // Pointer Buffer

p = uart0_buf; // UART Buffer

do // Get char & Print Until null

{

putchar0(*p); // Write char to UART

p++; // Next char

}

while(*p != '\0'); // End of ASCII (null)

return;

}

void delay(unsigned long int count1)

{

while(count1 > 0) {count1--;} // Loop Decrease Counter

}

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AYARAFUN

http://www.electoday.com/bbs/viewthread.php?tid=11823&extra=page%3D1

Serial Port RS-232

Thanks: ฝากรูป

อ้างอิง : www.ind.cru.in.th/atikhom/files/Serialport.ppt

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