Texas Instruments MSP430

300
*
* Note: ~<BIT> indicates that <BIT> has value zero
*/
BCSCTL2 = SELM_0 | DIVM_0 | DIVS_0;
if (CALBC1_1MHZ != 0xFF)
{
/* Follow recommended flow. First, clear all DCOx and MODx bits. Then
* apply new RSELx values. Finally, apply new DCOx and MODx bit values.
*/
DCOCTL = 0x00;
BCSCTL1 = CALBC1_1MHZ; /* Set DCO to 1MHz */
DCOCTL = CALDCO_1MHZ;
}
/*
* Basic Clock System Control 1
*
* XT2OFF -- Disable XT2CLK
* ~XTS -- Low Frequency
* DIVA_0 -- Divide by 1
*
* Note: ~XTS indicates that XTS has value zero
*/
BCSCTL1 |= XT2OFF | DIVA_0;
/*
* Basic Clock System Control 3
*
* XT2S_0 -- 0.4 - 1 MHz
* LFXT1S_0 -- If XTS = 0, XT1 = 32768kHz Crystal ; If XTS = 1, XT1 = 0.4 - 1-
MHz crystal or resonator
* XCAP_1 -- ~6 pF
*/
BCSCTL3 = XT2S_0 | LFXT1S_0 | XCAP_1;
/* USER CODE START (section: BCSplus_graceInit_epilogue) */
/* User code */
/* USER CODE END (section: BCSplus_graceInit_epilogue) */
}
void USCI_B0_graceInit(void)
{
/* USER CODE START (section: USCI_B0_graceInit_prologue) */
/* User initialization code */
/* USER CODE END (section: USCI_B0_graceInit_prologue) */
/* Disable USCI */
UCB0CTL1 |= UCSWRST;
/*
* Control Register 0
*
* ~UCA10 -- Own address is a 7-bit address
* ~UCSLA10 -- Address slave with 7-bit address
* ~UCMM -- Single master environment. There is no other master in the system.
The address compare unit is disabled
* UCMST -- Master mode