Texas Instruments MSP430

288
* SELM_0 -- DCOCLK
* DIVM_0 -- Divide by 1
* ~SELS -- DCOCLK
* DIVS_0 -- Divide by 1
* ~DCOR -- DCO uses internal resistor
*
* 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_2 -- If XTS = 0, XT1 = VLOCLK ; If XTS = 1, XT1 = 3 - 16-MHz crystal
or resonator
* XCAP_1 -- ~6 pF
*/
BCSCTL3 = XT2S_0 | LFXT1S_2 | XCAP_1;
/* USER CODE START (section: BCSplus_graceInit_epilogue) */
/* User code */
/* USER CODE END (section: BCSplus_graceInit_epilogue) */
}
void USI_graceInit(void)
{
/* USER CODE START (section: USI_graceInit_prologue) */
/* User initialization code */
/* USER CODE END (section: USI_graceInit_prologue) */
/* Disable USI */
USICTL0 |= USISWRST;
/*
* USI Control Register 0
*
* USIPE7 -- USI function enabled