/**********************************************************************//**
* @brief Set function for MCLK frequency.
*
* @param systemClockSpeed Intended frequency of operation - SYSCLK_xxMHZ.
*
* @return none
*************************************************************************/
void halBoardSetSystemClock(unsigned char systemClockSpeed)
{
unsigned char setDcoRange, setVCore;
unsigned int setMultiplier;
halBoardGetSystemClockSettings( systemClockSpeed, &setDcoRange, \
&setVCore, &setMultiplier);
halBoardSetVCore( setVCore );
__bis_SR_register(SCG0); // Disable the FLL control loop
UCSCTL0 = 0x00; // Set lowest possible DCOx, MODx
UCSCTL1 = setDcoRange; // Select suitable range
UCSCTL2 = setMultiplier + FLLD_1; // Set DCO Multiplier
UCSCTL4 = SELA__XT1CLK | SELS__DCOCLKDIV | SELM__DCOCLKDIV ;
__bic_SR_register(SCG0); // Enable the FLL control loop
// Loop until XT1,XT2 & DCO fault flag is cleared
do
{
UCSCTL7 &= ~(XT2OFFG + XT1LFOFFG + XT1HFOFFG + DCOFFG);
// Clear XT2,XT1,DCO fault flags
SFRIFG1 &= ~OFIFG; // Clear fault flags
}while (SFRIFG1&OFIFG); // Test oscillator fault flag
// Worst-case settling time for the DCO when the DCO range bits have been
// changed is n x 32 x 32 x f_FLL_reference. See UCS chapter in 5xx UG
// for optimization.
// 32 x 32 x / f_FLL_reference (32,768 Hz) = .03125 = t_DCO_settle
// t_DCO_settle / (1 / 25 MHz) = 781250 = counts_DCO_settle
__delay_cycles(781250);
}
/************************************************************************
* @brief Set function for MCLK frequency.
*
* @param systemClockSpeed Intended frequency of operation - SYSCLK_xxMHZ.
*
* @return none
*************************************************************************/
void halBoardSetSystemClock(unsigned char systemClockSpeed)
{
unsigned char setDcoRange = 0;
unsigned char setVCore = 0;
unsigned int setMultiplier = 0;
halBoardGetSystemClockSettings( systemClockSpeed, &setDcoRange, \
&setVCore, &setMultiplier);
if (setVCore > (PMMCTL0 & PMMCOREV_3)) // Only change VCore if necessary
halBoardSetVCore( setVCore );
UCSCTL0 = 0x00; // Set lowest possible DCOx, MODx
UCSCTL1 = setDcoRange; // Select suitable range
UCSCTL2 = setMultiplier + FLLD_1; // Set DCO Multiplier
UCSCTL4 = SELA__XT1CLK | SELS__DCOCLKDIV | SELM__DCOCLKDIV ;
// Worst-case settling time for the DCO when the DCO range bits have been
// changed is n x 32 x 32 x f_FLL_reference. See UCS chapter in 5xx UG
// for optimization.
// 32 x 32 x / f_FLL_reference (32,768 Hz) = .03125 = t_DCO_settle
// t_DCO_settle / (1 / 18 MHz) = 562500 = counts_DCO_settle
// __delay_cycles(562500);
int i;
for (i=0;i<10;i++){
__delay_cycles(56250);
}
}
/**********************************************************************//**
* @brief Executes the "PMM-MCLK" menu option in the User Experience
* example code. This menu option allows one to change the frequency
* of operation for the MSP430 and the VCore setting.
*
* @param none
*
* @return none
*************************************************************************/
void menuPMMMCLK( void )
{
unsigned char menuLeftPos = 2, menuRightPos = 0, menuRightMaxAllowed = 5;
unsigned char ledOn, quit = 0;
volatile unsigned int i;
halButtonsInterruptDisable( BUTTON_ALL );
halButtonsInterruptEnable( BUTTON_SELECT + BUTTON_S1 + \
BUTTON_S2 + BUTTON_RIGHT );
halAccelerometerShutDown();
halLcdClearScreen();
halBoardOutputSystemClock();
halLcdPrintLineCol(&VcoreText[0], 0, 1, OVERWRITE_TEXT );
for (i=0;i < MCLK_MENU_MAX+1; i++)
halLcdPrintLineCol(&MCLKText[i*6], i, 12, OVERWRITE_TEXT );
halLcdPrintLineCol(&VcoreText[menuLeftPos*6 + 6], \
menuLeftPos+1, 1, INVERT_TEXT | OVERWRITE_TEXT);
halLcdPrintLineCol(&MCLKText[menuRightPos*6 + 6], \
menuRightPos+1, 12, INVERT_TEXT | OVERWRITE_TEXT);
buttonsPressed = 0;
for (i = menuRightMaxAllowed; i < MCLK_MENU_MAX; i++)
{
halLcdLine(96, 12*(i+1)+6, 136, 12*(i+1)+6, PIXEL_ON);
halLcdLine(96, 12*(i+1)+7, 136, 12*(i+1)+7, PIXEL_ON);
}
ledOn = 0;
halLcdPrintLine(" LED", 6, 0);
halLcdPrintLine(" OFF", 7, 0);
halLcdImage(IMG_RIGHT_FILLED, 4, 32, 10, 75);
halBoardSetVCore(menuLeftPos);
halBoardSetSystemClock(menuRightPos);
while (!quit)
{
// The LED can be enabled to show the relative difference between
// frequencies of operation.
while (!buttonsPressed)
if (ledOn)
{
LED_PORT_OUT ^= LED_1;
for (i=0; i < 0xFFFF; i++)
if (buttonsPressed)
break;
}
else
{
// To emulate a real application instead of continuous jumps, use nops
__no_operation();
__no_operation();
__no_operation();
__no_operation();
__no_operation();
__no_operation();
__no_operation();
__no_operation();
__no_operation();
}
if (buttonsPressed & BUTTON_S1)
{
/*
* Disabled for MSP430F5438 RTM Silicon
halLcdPrintLineCol(&VcoreText[menuLeftPos*6 + 6], menuLeftPos+1, \
1, OVERWRITE_TEXT);
if (++ menuLeftPos >= VCORE_MENU_MAX)
{
menuLeftPos = 0;
menuRightMaxAllowed = MAX_MCLK_ALLOWED[ menuLeftPos ];
if (menuRightPos >= menuRightMaxAllowed)
{
halLcdPrintLineCol(&MCLKText[menuRightPos*6 + 6], menuRightPos+1, \
12, OVERWRITE_TEXT);
menuRightPos = menuRightMaxAllowed - 1;
halLcdPrintLineCol(&MCLKText[menuRightPos*6 + 6], menuRightPos+1, \
12, INVERT_TEXT | OVERWRITE_TEXT);
}
for (i = menuRightMaxAllowed; i < MCLK_MENU_MAX; i++)
{
halLcdLine(96, 12*(i+1)+6, 136, 12*(i+1)+6, PIXEL_ON);
halLcdLine(96, 12*(i+1)+7, 136, 12*(i+1)+7, PIXEL_ON);
}
}
else
{
for (i=menuRightMaxAllowed+1; i< MAX_MCLK_ALLOWED[menuLeftPos]+1; i ++)
halLcdPrintLineCol(&MCLKText[i*6], i, 12, OVERWRITE_TEXT );
menuRightMaxAllowed = MAX_MCLK_ALLOWED[menuLeftPos];
}
halLcdPrintLineCol(&VcoreText[menuLeftPos*6 + 6], menuLeftPos+1, \
1, INVERT_TEXT | OVERWRITE_TEXT);
*/
}
if ( buttonsPressed & BUTTON_S2 )
{
halLcdPrintLineCol(&MCLKText[menuRightPos*6 + 6], \
menuRightPos+1, 12, OVERWRITE_TEXT);
if ( ++menuRightPos >= menuRightMaxAllowed )
menuRightPos = 0;
halLcdPrintLineCol(&MCLKText[menuRightPos*6 + 6], \
menuRightPos+1, 12, INVERT_TEXT| OVERWRITE_TEXT);
}
if ( buttonsPressed & BUTTON_RIGHT )
{
ledOn = 1 - ledOn;
if ( ledOn )
halLcdPrintLineCol("ON ", 7, 6, OVERWRITE_TEXT);
else
{
halLcdPrintLineCol("OFF", 7, 6, OVERWRITE_TEXT);
LED_PORT_OUT &= ~LED_1;
}
}
if ( buttonsPressed & (BUTTON_S1 | BUTTON_S2) )
{
halBoardSetVCore(menuLeftPos);
halBoardSetSystemClock(menuRightPos);
//halBoardDisableSVS();
}
if ( buttonsPressed & BUTTON_SELECT )
quit = 1;
buttonsPressed = 0;
}
halBoardSetSystemClock( SYSCLK_16MHZ );
halBoardStopOutputSystemClock();
LED_PORT_OUT &= ~LED_1;
}
