/************************Initialize real-time clock********************************************/
void RTCInit(void)
{
YEAR = 2011; // Initial year
MONTH = 12; // Initial month
DOM = 6; // Initialization date
HOUR = 12;
MIN = 59;
SEC = 50;
//If the day of the week is used, initialize it correctly here: DOW = (value 0~6)
CIIR = 0x01; // Set the increment of the second value to generate an interrupt
CCR = 0x11; // Use independent oscillator to start RTC. (0x01, 0x10, 0x13 are not displayed)
}
void SendTimeRtc(void) // incorrect week number
{
U32 times;
U8 bak;
times = CTIME0; // Read complete clock register 0
/*
bak = (times>>24)&0x07; // Get the value of the week
Send_BUF[2] = bak/10+'0';
Send_BUF[3] = bak%10+'0';
// Send_BUF[4] = ':';
DataDisp(bak/10,2,0); //Display the day of the week Why is the day of the week incorrect?
Delay(4);
DataDisp(bak%10,3,0);
Delay(2);*/
bak = (times>>8)&0x3F; // Get the value of the score
Send_BUF[0] = bak/10+'0';
Send_BUF[1] = bak%10+'0';
Send_BUF[2] = ':';
DataDisp(bak/10,0,0); //Display minutes
Delay(4);
DataDisp(bak%10,1,1);
Delay(2);
bak = times&0x3F; // Get the value of seconds
Send_BUF[3] = bak/10+'0';
Send_BUF[4] = bak%10+'0';
Send_BUF[5] = ' ';
DataDisp(bak/10,2,0); //Display minutes
Delay(4);
DataDisp(bak%10,3,0);
Delay(2);
}
After working for a long time, the week was always wrong. Finally I figured it out, it turned out that the clock was not initialized in RTCInit().
Remember: If you want to get the day of the week, the day of the week register must be initialized, and then ARM will automatically calculate the day of the week data.
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