實時記錄MSP430編程問題
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問題解決了：單片機壞了?。?！內部的LISTEN估計被連上了，這塊單片機只能用來做為發(fā)送端了。
另外，今日還遇到了中斷子程序不作用的情況，網(wǎng)上各種尋找后發(fā)現(xiàn)程序中缺少 _EINT();導致無法運行中斷程序，奇怪的是TI給的示范程序里面都沒有_EINT()，我猜想是因為IAR版本或者所用調試程序不同的原因吧。
現(xiàn)在兩塊單片機已經(jīng)能夠進行簡單的單工通信了，明天再來完善程序。
即：UCA1RXBUF = UCA1TXBUF
Init_Keypad();
Init_LCD();
write_command(0x3f); //打開顯示
clear_LCD();
P5SEL = 0xC0; // P5.6,7 = USCI_A1 TXD/RXD
UCA1CTL1 |= UCSWRST; // **Put state machine in reset**
UCA1CTL1 |= UCSSEL__ACLK; // ACLK
UCA1BR0 = 0x0D; // 2400
UCA1BR1 = 0; //
UCA1MCTL |= UCBRS_6 + UCBRF_0; // Modulation UCBRSx=1, UCBRFx=0
UCA1CTL1 &= ~UCSWRST; // **Initialize USCI state machine**
UCA1IE |= UCRXIE + UCTXIE; // Enable USCI_A0 RX,TX interrupt
_EINT();
while(1)
{
Key_Event(); //讀取鍵值
if(key_Flag == 1)
{
key_Flag = 0;
UCA1TXBUF=key_val;
}
}
__bis_SR_register(LPM0_bits + GIE); // Enter LPM0, interrupts enabled
__no_operation(); // For debugger
}
附上問題程序：
void main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
Init_Keypad();
Init_LCD();
write_command(0x3f); //打開顯示
clear_LCD();
P5SEL = 0xC0; // P5.6,7 = USCI_A1 TXD/RXD
UCA1CTL1 |= UCSWRST; // **Put state machine in reset**
UCA1CTL1 |= UCSSEL__ACLK; // ACLK
UCA1BR0 = 0x0D; // 2400
UCA1BR1 = 0; //
UCA1MCTL |= UCBRS_6 + UCBRF_0; // Modulation UCBRSx=1, UCBRFx=0
UCA1CTL1 &= ~UCSWRST; // **Initialize USCI state machine**
UCA1IE |= UCRXIE + UCTXIE; // Enable USCI_A0 RX,TX interrupt
while(1)
{
Key_Event(); //讀取鍵值
if(key_Flag == 1)
{
key_Flag = 0;
UCA1TXBUF=key_val;
display_16_8((uchar *)&LCD_16_8[UCA1RXBUF][0],2,lie+72);//for debugger
display_16_8((uchar *)&LCD_16_8[UCA1RXBUF][0],4,lie+72);//for debugger
}
}
__bis_SR_register(LPM0_bits + GIE); // Enter LPM0, interrupts enabled
__no_operation(); // For debugger
}
// Echo back RXed character, confirm TX buffer is ready first
#pragma vector=USCI_A1_VECTOR
__interrupt void USCI_A1_ISR(void)
{
switch(__even_in_range(UCA1IV,4))
{
case 0:break; // Vector 0 - no interrupt
case 2: // Vector 2 - RXIFG
display_16_8((uchar *)&LCD_16_8[UCA1RXBUF][0],4,lie+72); // TX -> RXed character
break;
case 4:break; // Vector 4 - TXIFG
default: break;
}
}
成功的程序：
void main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
Init_Keypad();
Init_LCD();
write_command(0x3f); //打開顯示
clear_LCD();
P5SEL = 0xC0; // P5.6,7 = USCI_A1 TXD/RXD
UCA1CTL1 |= UCSWRST; // **Put state machine in reset**
UCA1CTL1 |= UCSSEL__ACLK; // ACLK
UCA1BR0 = 0x0D; // 2400
UCA1BR1 = 0; //
UCA1MCTL |= UCBRS_6 + UCBRF_0; // Modulation UCBRSx=1, UCBRFx=0
UCA1CTL1 &= ~UCSWRST; // **Initialize USCI state machine**
UCA1IE |= UCRXIE + UCTXIE; // Enable USCI_A0 RX,TX interrupt
_EINT();
while(1)
{
Key_Event(); //讀取鍵值
if(key_Flag == 1)
{
key_Flag = 0;
UCA1TXBUF=key_val;
}
}
__bis_SR_register(LPM0_bits + GIE); // Enter LPM0, interrupts enabled
__no_operation(); // For debugger
}
// Echo back RXed character, confirm TX buffer is ready first
#pragma vector=USCI_A1_VECTOR
__interrupt void USCI_A1_ISR(void)
{
switch(UCA1IV)
{
case 0:break; // Vector 0 - no interrupt
case 2: // Vector 2 - RXIFG
if((UCA1RXBUF>=0)&&(UCA1RXBUF<10))
display_16_8((uchar *)&LCD_16_8[UCA1RXBUF][0],4,lie+72); // TX -> RXed character
break;
case 4:
if((UCA1TXBUF>=0)&&(UCA1TXBUF<10))
display_16_8((uchar *)&LCD_16_8[UCA1TXBUF][0],6,lie+72);
break; // Vector 4 - TXIFG
default: break;
}
}
#pragma vector=USCI_A1_VECTOR
__interrupt void USCI_A1_ISR(void)
{
switch(UCA1IV)
{
case 0:break; // Vector 0 - no interrupt
case 2: // Vector 2 - RXIFG
if((UCA1RXBUF>=0)&&(UCA1RXBUF<10))
display_16_8((uchar *)&LCD_16_8[UCA1RXBUF][0],4,lie+72); // TX -> RXed character
break;
case 4:
if((UCA1TXBUF>=0)&&(UCA1TXBUF<10))
display_16_8((uchar *)&LCD_16_8[UCA1TXBUF][0],6,lie+72);
break; // Vector 4 - TXIFG
default: break;
}
}
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