Modify the source code to make the tri-color LED2 to cycle through three colors only: Red, Green, and Blue.

In your report, explain your source code.

source code:

#include //exact-width integer types

#include //driver library

#define DCO_FREQ 48e6 //unit: Hz

void main(void)

{

uint32_t n;

uint16_t p2_data = 0;

WDT_A_holdTimer(); //stop watchdog timer

//Enable FPU for DCO Frequency calculation.

FPU_enableModule();

//Change VCORE to 1 to support a frequency higher than 24MHz.

//See data sheet for Flash wait-state requirement for a given frequency.

PCM_setCoreVoltageLevel(PCM_VCORE1);

FlashCtl_setWaitState(FLASH_BANK0, 1);

FlashCtl_setWaitState(FLASH_BANK1, 1);

//Set the DCO Frequency.

//DCO nominal frequencies: 1.5, 3, 6, 12, 24, 48 MHz.

CS_setDCOFrequency(DCO_FREQ);

//Init clock signals: MCLK, HSMCLK, SMCLK.

//Can be divided by 1, 2, 4, 8, 16, 32, 64, or 128.

CS_initClockSignal(CS_MCLK, CS_DCOCLK_SELECT, CS_CLOCK_DIVIDER_1);

CS_initClockSignal(CS_HSMCLK, CS_DCOCLK_SELECT, CS_CLOCK_DIVIDER_8);

CS_initClockSignal(CS_SMCLK, CS_DCOCLK_SELECT, CS_CLOCK_DIVIDER_16);

//Configure P1.0, P2.0, P2.1, P2.2 as output.

//P1.0 is connected to a red LED on LaunchPad.

//P2.0, P2.1, P2.2 are connected to a RGB tri-color LED on LaunchPad.

GPIO_setAsOutputPin(GPIO_PORT_P1, GPIO_PIN0);

GPIO_setAsOutputPin(GPIO_PORT_P2, GPIO_PIN0|GPIO_PIN1|GPIO_PIN2);

while(1)

{

//simple delay loop

for(n=0; n<1000000; n++)

{

//do nothing

}

GPIO_toggleOutputOnPin(GPIO_PORT_P1, GPIO_PIN0);

GPIO_setOutputLowOnPin(GPIO_PORT_P2, (~p2_data)&0x07);

GPIO_setOutputHighOnPin(GPIO_PORT_P2, p2_data);

p2_data++;

if(p2_data >= 0x08)

{

p2_data = 0;

}

} //end of while

}