Texas Instruments MSP430

233
// 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_8MHZ; /* Set DCO to 8MHz */
DCOCTL = CALDCO_8MHZ;
}
/*
* 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_A0_graceInit(void)
{
/* USER CODE START (section: USCI_A0_graceInit_prologue) */
/* User initialization code */
/* USER CODE END (section: USCI_A0_graceInit_prologue) */
/* Disable USCI */
/* Disable USCI */
UCA0CTL1 |= UCSWRST;
/*
* Control Register 0
*
* UCCKPH -- Data is captured on the first UCLK edge and changed on the
following edge
* ~UCCKPL -- Inactive state is low
* UCMSB -- MSB first
* ~UC7BIT -- 8-bit
* UCMST -- Master mode
* UCMODE_1 -- 4-Pin SPI with UCxSTE active high: slave enabled when UCxSTE =
1
* UCSYNC -- Synchronous Mode
*
* Note: ~<BIT> indicates that <BIT> has value zero
*/