P2SEL = BIT4+BIT5; // P2.4,5 = USART0 TXD/RXD
P5DIR |= BIT1; // Set P5.1 to output direction
// SetupUSCI0:
UCA0CTL1 = UCSWRST; // To set hold the module in reset
UCA0CTL1 = UCSSEL0; // ACLK
UCA0BR0 = 13; // 32k - 2400 baudrate control setting
UCA0BR1 = 0;
UCA0MCTL = UCBRS2+UCBRS1; // Second modulation stage values
UCA0STAT = UCFE+UCOE+UCPE+UCBRK+UCRXERR;
// RTC
RTCCTL = RTCBCD+RTCHOLD+RTCMODE_3+RTCTEV_0+RTCIE;
// RTC enable, BCD mode,
// alarm every Minute,
// enable RTC interrupt
// Init time
RTCSEC = 0x00; // Set Seconds
RTCMIN = 0x58; // Set Minutes
RTCHOUR = 0x08; // Set Hours
// Init date
RTCDOW = 0x02; // Set DOW
RTCDAY = 0x23; // Set Day
RTCMON = 0x08; // Set Month
RTCYEAR = 0x2005; // Set Year
RTCCTL &= ~RTCHOLD; // Enable RTC
while (1)
{
//__bis_SR_register(LPM3_bits + GIE); // Enter LPM3 w/ interrupt
__no_operation(); // Required for debugger
tx_char((RTCHOUR>>4)+0x30); // Send high nibble of hour
tx_char((RTCHOUR&0x0F)+0x30); // Send low nibble of hour
tx_char(':'); // Send ':'
tx_char((RTCMIN>>4)+0x30); // Send high nibble of minute
tx_char((RTCMIN&0x0F)+0x30); // Send low nibble of minute
tx_char('\n'); // Send new line
}
}
void tx_char(char c)
{
while ((IFG2 & UCA0TXIFG)==0){} // wait till TXbuf empty
UCA0TXBUF = c; // TX char
}
// Basic Timer interrupt service routine
#pragma vector=BASICTIMER_VECTOR
__interrupt void basic_timer(void)
{
P5OUT ^= BIT1; // Toggle P5.1 using exclusive-OR
LPM3_EXIT; // Exit LPM after interrupt
}
作者: 飞机翻筋斗 时间: 2020-3-16 14:25
你这程序rtc初始化是没问题的，USCI串口我记得配置完要将UCSWRST复位的。
总中断也没开....
最后如果两个模块都不熟悉先一个个来 作者: f556 时间: 2020-3-30 16:43
RTCYEAR = 0x2005; // Set Year
0x2005不是2005年，是8197年，不知道万年历算法能支持到8000年不作者: f556 时间: 2020-3-31 10:39
RTCHOLD是这样说的：The counter can be stopped by setting the RTCHOLD bit.带有HOLD的说法一般是保持、停止。
RTCCTL = RTCBCD+RTCHOLD+RTCMODE_3+RTCTEV_0+RTCIE;这句中不对，RTCHOLD默认rw（1）了。
改成这样试试：
RTCCTL = RTCBCD+RTCMODE_3+RTCTEV_0+RTCIE;
RTCCTL &= ~RTCHOLD;