bool PCM_gotoLPM3InterruptSafe(void)
{
bool lpmHappenedCorrect;
/* Disabling master interrupts. In Cortex M, if an interrupt is enabled but
master interrupts are disabled and a WFI happens the WFI will
immediately exit. */
Interrupt_disableMaster();
lpmHappenedCorrect = PCM_gotoLPM3();
/* Enabling and Disabling Interrupts very quickly so that the
processor catches any pending interrupts */
Interrupt_enableMaster();
Interrupt_disableMaster();
return lpmHappenedCorrect;
}
//------------------------------------------------------------------------------
// Send colors to the strip and show them. Disables interrupts while processing.
void showStrip()
{
// __bic_SR_register(GIE); // disable interrupts
Interrupt_disableMaster();
// send RGB color for every LED
int i, j;
for (i = 0; i < NUM_LEDS; i++){
u_char rgb[4] = {leds[i].green, leds[i].red, leds[i].blue, leds[i].white}; // get RGB color for this LED
// send green, then red, then blue, then white
for (j = 0; j < 4; j++){
u_char mask = 0x80; // b1000000
// check each of the 8 bits
while(mask != 0){
while ((UCB1IFG&0x0002)==0x0000); // wait until empty to transmit
if (rgb[j] & mask)
{ // most significant bit first
// SPI_transmitData(EUSCI_B1_MODULE, HIGH_CODE);
UCB1TXBUF = HIGH_CODE; // send 1
}
else
{
// SPI_transmitData(EUSCI_B1_MODULE, LOW_CODE);
UCB1TXBUF = LOW_CODE; // send 0
}
mask >>= 1; // check next bit
}
}
}
// send RES code for at least 50 us
_delay_cycles(800);
// __bis_SR_register(GIE); // enable interrupts
Interrupt_enableMaster();
}
int main(void)
{
/* Halting WDT */
WDT_A_holdTimer();
Interrupt_enableSleepOnIsrExit();
/* Initializing ADC (MCLK/1/1) */
ADC14_enableModule();
ADC14_initModule(ADC_CLOCKSOURCE_MCLK, ADC_PREDIVIDER_1, ADC_DIVIDER_1,
0);
/* Configuring ADC Memory (ADC_MEM0 A0/A1 Differential) in repeat mode
* with use of external references */
ADC14_configureSingleSampleMode(ADC_MEM0, true);
ADC14_configureConversionMemory(ADC_MEM0, ADC_VREFPOS_EXTPOS_VREFNEG_EXTNEG,
ADC_INPUT_A0, true);
/* Setting up GPIO pins as analog inputs (and references) */
GPIO_setAsPeripheralModuleFunctionInputPin(GPIO_PORT_P5,
GPIO_PIN6 | GPIO_PIN5 | GPIO_PIN4, GPIO_TERTIARY_MODULE_FUNCTION);
/* Enabling sample timer in auto iteration mode and interrupts*/
ADC14_enableSampleTimer(ADC_AUTOMATIC_ITERATION);
ADC14_enableInterrupt(ADC_INT0);
/* Enabling Interrupts */
Interrupt_enableInterrupt(INT_ADC14);
Interrupt_enableMaster();
/* Triggering the start of the sample */
ADC14_enableConversion();
ADC14_toggleConversionTrigger();
/* Going to sleep */
while (1)
{
PCM_gotoLPM0();
}
}
int
CLI_Read(unsigned char *pBuff)
{
if(pBuff == NULL)
return -1;
#ifdef _USE_CLI_
cli_have_cmd = 0;
g_ucUARTBuffer = pBuff;
UCA0IE |= UCRXIE;
Interrupt_enableMaster();
Interrupt_enableInterrupt(INT_EUSCIA0);
PCM_gotoLPM0();
// __bis_SR_register(LPM0_bits + GIE);
while(cli_have_cmd == 0);
UCA0IE &= ~UCRXIE;
return strlen((const char *)pBuff);
#else
return 0;
#endif
}
int main(void)
{
WDT_A_holdTimer();
//Configure Timer
unsigned int dcoFrequency = 3E+6;
MAP_CS_setDCOFrequency(dcoFrequency);
MAP_CS_initClockSignal(CS_SMCLK, CS_DCOCLK_SELECT, CS_CLOCK_DIVIDER_1); // ( 3Mhz / 64 ) / (Period = 46875) = 1 second
//Set LED's as outputs and turn off
MAP_GPIO_setAsOutputPin(GPIO_PORT_P1,GPIO_PIN0);
MAP_GPIO_setAsOutputPin(GPIO_PORT_P2,GPIO_PIN0);
MAP_GPIO_setOutputLowOnPin(GPIO_PORT_P1, GPIO_PIN0);
MAP_GPIO_setOutputLowOnPin(GPIO_PORT_P2, GPIO_PIN0);
////////////////////////////////////////////////////////////////////////////////////////////////////
// ADC INITILIZATION P5.5
////////////////////////////////////////////////////////////////////////////////////////////////////
/* Initializing ADC */
MAP_ADC14_enableModule();
GPIO_setAsPeripheralModuleFunctionInputPin(GPIO_PORT_P5, GPIO_PIN5, GPIO_TERTIARY_MODULE_FUNCTION); //writes 0's in PXSEL registers for pins 1.2 and 1.3
MAP_ADC14_setResolution(ADC_10BIT); // initialize to use a 10 Bit ADC
MAP_ADC14_initModule(ADC_CLOCKSOURCE_SMCLK, ADC_PREDIVIDER_1, ADC_DIVIDER_1,0);
/* Configuring ADC Memory */
MAP_ADC14_configureSingleSampleMode(ADC_MEM0, false); //put results in this 16 bit register location to hold results, false means we are manually triggering
MAP_ADC14_configureConversionMemory(ADC_MEM0, ADC_VREFPOS_AVCC_VREFNEG_VSS, ADC_INPUT_A0, false); //pin 5.5 is tied to channel 0 (A0)
/* Configuring Sample Timer */
MAP_ADC14_enableSampleTimer(ADC_MANUAL_ITERATION);
//Timer A setup
MAP_Timer_A_configureUpMode(TIMER_A0_MODULE, &upConfig0);
Interrupt_enableInterrupt(INT_TA0_0);
Timer_A_startCounter(TIMER_A0_MODULE, TIMER_A_UP_MODE);
/* Enabling/Toggling Conversion */
MAP_ADC14_enableConversion();
MAP_ADC14_toggleConversionTrigger();
////////////////////////////////////////////////////////////////////////////////////////////////////
// END ADC
////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////
// Timer A 2 and PWM on P5.6
////////////////////////////////////////////////////////////////////////////////////////////////////
GPIO_setAsPeripheralModuleFunctionOutputPin(GPIO_PORT_P5, GPIO_PIN6, GPIO_PRIMARY_MODULE_FUNCTION); //writes 0's in PXSEL registers for pins 1.2 and 1.3
// Set Timer A period (PWM signal period)
TA2CCR0 = 10000 ; // i think i wrote this wring, his example he showed in class is is 10000
// Set Duty cycle
TA2CCR1 = DUTY_CYCLE * 10000; //inital DutyCycle of 0%.. Duty_Cycle is macro
// Set output mode to Reset/Set
TA2CCTL1 = OUTMOD_7 ; // Macro which is equal to 0x00e0, defined in msp432p401r.h
// Initialize Timer A
TA2CTL = TASSEL__SMCLK | MC__UP | TACLR ; // this bitwise or’s multiple settings at the same time (this just sets different bits in the register to set these functionalities/settings)
//Does this start the timer?? (is next line necessary?)
Timer_A_startCounter(TIMER_A2_MODULE, TIMER_A_UP_MODE);
////////////////////////////////////////////////////////////////////////////////////////////////////
// END Timer A 2 and PWM on 5.6
////////////////////////////////////////////////////////////////////////////////////////////////////
Interrupt_enableMaster() ;
while(1){
while(MAP_ADC14_isBusy()==0){ // poll the busy flag. we have a conversion going bc we already triggerted it above, so we are waiting for the conversion to be done, when it is, we are going to call the get result function. this just returns the 16 bit value rsults
ADC_result = (uint16_t)MAP_ADC14_getResult(ADC_MEM0); //just goes to memory location takes results and returns the 16 bit value... this just continues to get repopulted.
MAP_ADC14_toggleConversionTrigger(); ////once we got the result we start a new conversion and we go back to top and begin wiaitng until its dones again
}//end nested while
}//end inf while
}//end main
