void main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
P3SEL |= 0x30; // P3.4,5 = USART0 TXD/RXD
BCSCTL1 |= DIVA_3; // ACLK= LFXT1CLK/8
Set_DCO(); // Set DCO
ME1 |= UTXE0 + URXE0; // Enabled USART0 TXD/RXD
UCTL0 |= CHAR; // 8-bit character, SWRST = 1
UTCTL0 |= SSEL1 + SSEL0 + URXSE; // UCLK = SMCLK, start edge detect
UBR00 = 0xD0; // 9600 from 2Mhz
UBR10 = 0x00;
UMCTL0 = 0x00; // No modulation
UCTL0 &= ~SWRST; // Initialize USART state machine
IE1 |= URXIE0; // Enable USART0 RX interrupt
for (;;)
{
while (!(UTCTL0 & TXEPT)); // Confirm no TXing before --> LPM3
_DINT(); // Disable interrupts for flag test
_NOP();
if (!(UTCTL0 & SSEL0))
_BIS_SR(LPM0_bits + GIE); // RX'ing char, enter LPM0, int's active
else
_BIS_SR(LPM3_bits + GIE); // Enter LPM3, int's active
}
}
int main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
for (i = 0; i < 0xfffe; i++); // Delay for XTAL stabilization
P1OUT = 0x00; // Clear P1 output latches
P1DIR = 0x01; // P1.0 output
P2SEL |= 0x02; // P2.1 SMCLK output
P2DIR |= 0x02; // P2.1 output
j = 0; // Reset pointer
Set_DCO(DELTA_16MHZ); // Set DCO and obtain constants
CAL_DATA[j++] = DCOCTL;
CAL_DATA[j++] = BCSCTL1;
Set_DCO(DELTA_12MHZ); // Set DCO and obtain constants
CAL_DATA[j++] = DCOCTL;
CAL_DATA[j++] = BCSCTL1;
Set_DCO(DELTA_8MHZ); // Set DCO and obtain constants
CAL_DATA[j++] = DCOCTL;
CAL_DATA[j++] = BCSCTL1;
Set_DCO(DELTA_1MHZ); // Set DCO and obtain constants
CAL_DATA[j++] = DCOCTL;
CAL_DATA[j++] = BCSCTL1;
Flash_ptrA = (char *)0x10C0; // Point to beginning of seg A
FCTL2 = FWKEY + FSSEL0 + FN1; // MCLK/3 for Flash Timing Generator
FCTL1 = FWKEY + ERASE; // Set Erase bit
FCTL3 = FWKEY + LOCKA; // Clear LOCK & LOCKA bits
*Flash_ptrA = 0x00; // Dummy write to erase Flash seg A
FCTL1 = FWKEY + WRT; // Set WRT bit for write operation
Flash_ptrA = (char *)0x10F8; // Point to beginning of cal consts
for (j = 0; j < 8; j++)
*Flash_ptrA++ = CAL_DATA[j]; // re-flash DCO calibration data
FCTL1 = FWKEY; // Clear WRT bit
FCTL3 = FWKEY + LOCKA + LOCK; // Set LOCK & LOCKA bit
while (1)
{
P1OUT ^= 0x01; // Toggle LED
for (i = 0; i < 0x4000; i++); // SW Delay
}
}
void main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
for (i = 0; i < 0xfffe; i++); // Delay for XTAL stabilization
P1DIR |= 0x10; // P1.4 output
P1SEL |= 0x10; // P1.4 SMCLK output
Set_DCO(); // Set DCO
__bis_SR_register(LPM0_bits + GIE); // Enter LPM0 w/ interrupt
}
void main (void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer
BCSCTL1 |= DIVA_3; // ACLK = LFXT1CLK/8
Set_DCO(); // Set DCO
CCTL0 = OUT; // TXD Idle as Mark
TACTL = TASSEL_2 + MC_2; // SMCLK, continuous mode
P1SEL = TXD; // P1.1/TA0 for TXD function
P1DIR = TXD; // TXD output on P1
P2SEL = RXD; // P2.2/TA0 as RXD input
// Mainloop
for (;;)
{
RX_Ready(); // UART ready to RX one Byte
_BIS_SR(LPM3_bits + GIE); // Enter LPM3 w/ interr until char RXed
TX_Byte(); // TX Back RXed Byte Received
}
}
