Hi ,
I am using the following code with LPC2378 as Target, As on debugging this code , I should be able to read RTC_HOUR,RTC_MIN register. But as it reaches printf (bold) code lines. I am not able to do so. I am first time using RTC. Please Suggest how to read RTC and throw its value on UART.
As per my observation , there should be something which should be able to bring print control to UART 1 again after RTC initialization. And some variable which save the RTC register at a particular time instance. And Its an RTC, it should continuously show the time increment.
Please Suggest.
=============================================================================================== Code for RTC implementation ===============================================================================================
#include <LPC23xx.H> #include <stdio.h>
void Init_UART(void); void Init_RTC(void);
int main (void) { /* -------------Main----------------------------*/ Init_UART(); /* ----- Initializing UART-------------*/ Init_RTC(); /* ----- Initializing RTC-------------*/
printf("\n Real Time Clock "); printf("\n HOUR :%d",RTC_HOUR); printf("\n MIN :%d",RTC_MIN);
while(1) { /*-------------Infinite Loop-------*/ }
}
void Init_UART() {
/* UART 2 Enable */ PINSEL0 |= 0x40000000; /* Enable TxD1 in P0.15 */
PINSEL1 |= 0x00000001; /* Enable RxD1 in P0.16 */
U1LCR = 0x83; /* 8 bits, no Parity, 1 Stop bit */
U1DLL = 78; /* 9600 Baud Rate @ 12.0 MHZ PCLK */
U1LCR = 0x03; /* DLAB = 0 */
printf("\n ***** UART Initialized ***** \n"); }
void Init_RTC(void) {
/*RTC Clock Intialization*/
PCONP = 0X00000200; /* RTC power enabled*/
RTC_PREINT = 0X0000016E; /* for Xtal @12MHZ */
RTC_PREFRAC = 0X0000001E;
RTC_CCR = 0X00000011;
RTC_ILR =0X1; /*clears the counter increment interrupt*/
RTC_HOUR=12;
RTC_MIN=45;
RTC_SEC=59;
RTC_DOM=21;
RTC_MONTH=12;
RTC_YEAR=2011;
printf("\n HOUR :%d",RTC_HOUR); printf("\n MIN :%d",RTC_MIN); }
Best Regards,
Vinay. Kumar
Hi Per Westermark,
Now I am able to get output on UART1
As Output is like this. To make this I created one if else and(++) based conditions.
If I am not USING this if else then RTC stops after displaying printf output.
Not able to see the Counter happening which is happening in RTC without printf.
I want to set RTC COUNTER and Output on every counter increment in sec,min,hour and Day,month and year.
Just give me idea, I will try to implement it my own.
***** UART Initialized *****
Digital Date and Time Clock DAY::MONTH::YEAR 21 / 12 / 2011
------------------------------------------
****** HOUR::MIN::SEC********** 12::46::0 ****** HOUR::MIN::SEC********** 12::46::1 ****** HOUR::MIN::SEC********** 12::46::2 ****** HOUR::MIN::SEC********** 12::46::3 ****** HOUR::MIN::SEC********** 12::46::4 ****** HOUR::MIN::SEC********** 12::46::5 ****** HOUR::MIN::SEC********** 12::46::6 ****** HOUR::MIN::SEC********** 12::46::7 ****** HOUR::MIN::SEC********** 12::46::8 ****** HOUR::MIN::SEC********** 12::46::9 ****** HOUR::MIN::SEC********** 12::46::10 ****** HOUR::MIN::SEC********** 12::46::11 ---------------------------------------------
Best Regards