void clockConfiguration(void)
{
CS_setExternalClockSource( LF_CRYSTAL_FREQUENCY_IN_HZ, HF_CRYSTAL_FREQUENCY_IN_HZ );
/*
* Initialize LFXT crystal oscillator without timeout. In case of failure
* the code remains 'stuck' in this function.
*/
CS_turnOnLFXT( CS_LFXT_DRIVE_0 );
// Set DCO to run at 8MHz
CS_setDCOFreq( CS_DCORSEL_1, CS_DCOFSEL_3 );
// Set ACLK to use LFXT as its oscillator source (32KHz)
CS_initClockSignal( CS_ACLK, CS_LFXTCLK_SELECT, CS_CLOCK_DIVIDER_1 );
// Set SMCLK to use DCO as its oscillator source
CS_initClockSignal( CS_SMCLK, CS_DCOCLK_SELECT, CS_CLOCK_DIVIDER_1 );
// Set MCLK to use DCO as its oscillator source
CS_initClockSignal( CS_MCLK, CS_DCOCLK_SELECT, CS_CLOCK_DIVIDER_1 );
#if DEBUG
MCLK = CS_getMCLK();
SMCLK = CS_getSMCLK();
ACLK = CS_getACLK();
__no_operation();
#endif
}
static void prvConfigureClocks( void )
{
/* The full demo configures the clocks for maximum frequency, wheras the
blinky demo uses a slower clock as it also uses low power features. Maximum
freqency also needs more voltage.
From the datashee: For AM_LDO_VCORE1 and AM_DCDC_VCORE1 modes, the maximum
CPU operating frequency is 48 MHz and maximum input clock frequency for
peripherals is 24 MHz. */
PCM_setCoreVoltageLevel( PCM_VCORE1 );
CS_setDCOCenteredFrequency( CS_DCO_FREQUENCY_48 );
CS_initClockSignal( CS_HSMCLK, CS_DCOCLK_SELECT, CS_CLOCK_DIVIDER_1 );
CS_initClockSignal( CS_SMCLK, CS_DCOCLK_SELECT, CS_CLOCK_DIVIDER_1 );
CS_initClockSignal( CS_MCLK, CS_DCOCLK_SELECT, CS_CLOCK_DIVIDER_1 );
CS_initClockSignal( CS_ACLK, CS_REFOCLK_SELECT, CS_CLOCK_DIVIDER_1 );
}
static void prvSetupHardware( void )
{
/* Stop Watchdog timer. */
WDT_A_hold( __MSP430_BASEADDRESS_WDT_A__ );
/* Set all GPIO pins to output and low. */
GPIO_setOutputLowOnPin( GPIO_PORT_P1, GPIO_PIN0 | GPIO_PIN1 | GPIO_PIN2 | GPIO_PIN3 | GPIO_PIN4 | GPIO_PIN5 | GPIO_PIN6 | GPIO_PIN7 );
GPIO_setOutputLowOnPin( GPIO_PORT_P2, GPIO_PIN0 | GPIO_PIN1 | GPIO_PIN2 | GPIO_PIN3 | GPIO_PIN4 | GPIO_PIN5 | GPIO_PIN6 | GPIO_PIN7 );
GPIO_setOutputLowOnPin( GPIO_PORT_P3, GPIO_PIN0 | GPIO_PIN1 | GPIO_PIN2 | GPIO_PIN3 | GPIO_PIN4 | GPIO_PIN5 | GPIO_PIN6 | GPIO_PIN7 );
GPIO_setOutputLowOnPin( GPIO_PORT_P4, GPIO_PIN0 | GPIO_PIN1 | GPIO_PIN2 | GPIO_PIN3 | GPIO_PIN4 | GPIO_PIN5 | GPIO_PIN6 | GPIO_PIN7 );
GPIO_setOutputLowOnPin( GPIO_PORT_PJ, GPIO_PIN0 | GPIO_PIN1 | GPIO_PIN2 | GPIO_PIN3 | GPIO_PIN4 | GPIO_PIN5 | GPIO_PIN6 | GPIO_PIN7 | GPIO_PIN8 | GPIO_PIN9 | GPIO_PIN10 | GPIO_PIN11 | GPIO_PIN12 | GPIO_PIN13 | GPIO_PIN14 | GPIO_PIN15 );
GPIO_setAsOutputPin( GPIO_PORT_P1, GPIO_PIN0 | GPIO_PIN1 | GPIO_PIN2 | GPIO_PIN3 | GPIO_PIN4 | GPIO_PIN5 | GPIO_PIN6 | GPIO_PIN7 );
GPIO_setAsOutputPin( GPIO_PORT_P2, GPIO_PIN0 | GPIO_PIN1 | GPIO_PIN2 | GPIO_PIN3 | GPIO_PIN4 | GPIO_PIN5 | GPIO_PIN6 | GPIO_PIN7 );
GPIO_setAsOutputPin( GPIO_PORT_P3, GPIO_PIN0 | GPIO_PIN1 | GPIO_PIN2 | GPIO_PIN3 | GPIO_PIN4 | GPIO_PIN5 | GPIO_PIN6 | GPIO_PIN7 );
GPIO_setAsOutputPin( GPIO_PORT_P4, GPIO_PIN0 | GPIO_PIN1 | GPIO_PIN2 | GPIO_PIN3 | GPIO_PIN4 | GPIO_PIN5 | GPIO_PIN6 | GPIO_PIN7 );
GPIO_setAsOutputPin( GPIO_PORT_PJ, GPIO_PIN0 | GPIO_PIN1 | GPIO_PIN2 | GPIO_PIN3 | GPIO_PIN4 | GPIO_PIN5 | GPIO_PIN6 | GPIO_PIN7 | GPIO_PIN8 | GPIO_PIN9 | GPIO_PIN10 | GPIO_PIN11 | GPIO_PIN12 | GPIO_PIN13 | GPIO_PIN14 | GPIO_PIN15 );
/* Configure P2.0 - UCA0TXD and P2.1 - UCA0RXD. */
GPIO_setOutputLowOnPin( GPIO_PORT_P2, GPIO_PIN0 );
GPIO_setAsOutputPin( GPIO_PORT_P2, GPIO_PIN0 );
GPIO_setAsPeripheralModuleFunctionInputPin( GPIO_PORT_P2, GPIO_PIN1, GPIO_SECONDARY_MODULE_FUNCTION );
GPIO_setAsPeripheralModuleFunctionOutputPin( GPIO_PORT_P2, GPIO_PIN0, GPIO_SECONDARY_MODULE_FUNCTION );
/* Set PJ.4 and PJ.5 for LFXT. */
GPIO_setAsPeripheralModuleFunctionInputPin( GPIO_PORT_PJ, GPIO_PIN4 + GPIO_PIN5, GPIO_PRIMARY_MODULE_FUNCTION );
/* Set DCO frequency to 8 MHz. */
CS_setDCOFreq( CS_DCORSEL_0, CS_DCOFSEL_6 );
/* Set external clock frequency to 32.768 KHz. */
CS_setExternalClockSource( 32768, 0 );
/* Set ACLK = LFXT. */
CS_initClockSignal( CS_ACLK, CS_LFXTCLK_SELECT, CS_CLOCK_DIVIDER_1 );
/* Set SMCLK = DCO with frequency divider of 1. */
CS_initClockSignal( CS_SMCLK, CS_DCOCLK_SELECT, CS_CLOCK_DIVIDER_1 );
/* Set MCLK = DCO with frequency divider of 1. */
CS_initClockSignal( CS_MCLK, CS_DCOCLK_SELECT, CS_CLOCK_DIVIDER_1 );
/* Start XT1 with no time out. */
CS_turnOnLFXT( CS_LFXT_DRIVE_0 );
/* Disable the GPIO power-on default high-impedance mode. */
PMM_unlockLPM5();
}
static void prvConfigureClocks( void )
{
/* The full demo configures the clocks for maximum frequency, wheras this
blinky demo uses a slower clock as it also uses low power features.
From the datasheet: For AM_LDO_VCORE0 and AM_DCDC_VCORE0 modes, the maximum
CPU operating frequency is 24 MHz and maximum input clock frequency for
peripherals is 12 MHz. */
FlashCtl_setWaitState( FLASH_BANK0, 2 );
FlashCtl_setWaitState( FLASH_BANK1, 2 );
CS_setDCOCenteredFrequency( CS_DCO_FREQUENCY_3 );
CS_initClockSignal( CS_HSMCLK, CS_DCOCLK_SELECT, CS_CLOCK_DIVIDER_1 );
CS_initClockSignal( CS_SMCLK, CS_DCOCLK_SELECT, CS_CLOCK_DIVIDER_1 );
CS_initClockSignal( CS_MCLK, CS_DCOCLK_SELECT, CS_CLOCK_DIVIDER_1 );
CS_initClockSignal( CS_ACLK, CS_REFOCLK_SELECT, CS_CLOCK_DIVIDER_1 );
/* The lower frequency allows the use of CVORE level 0. */
PCM_setCoreVoltageLevel( PCM_VCORE0 );
}
