This c++ code is given how would i change it so that it loops the SOS signal in a red color on the LED. (SOS is three short light bursts followed by three long and then three short then a pause)

#include #include "../inc/tm4c123gh6pm.h"

unsigned long In; // input from PF4 unsigned long Out; // output to PF2 (blue LED) // Function Prototypes void PortF_Init(void); // 3. Subroutines Section // MAIN: Mandatory for a C Program to be executable int main(void){ // initialize PF0 and PF4 and make them inputs PortF_Init(); // make PF3-1 out (PF3-1 built-in LEDs) while(1){ In = GPIO_PORTF_DATA_R&0x10; // read PF4 into Sw1 In = In>>2; // shift into position PF2 Out = GPIO_PORTF_DATA_R; Out = Out&0xFB; Out = Out|In; GPIO_PORTF_DATA_R = Out; // output } } // Subroutine to initialize port F pins for input and output // PF4 is input SW1 and PF2 is output Blue LED // Inputs: None // Outputs: None // Notes: ... void PortF_Init(void){ volatile unsigned long delay; SYSCTL_RCGC2_R |= 0x00000020; // 1) activate clock for Port F delay = SYSCTL_RCGC2_R; // allow time for clock to start GPIO_PORTF_LOCK_R = 0x4C4F434B; // 2) unlock GPIO Port F GPIO_PORTF_CR_R = 0x1F; // allow changes to PF4-0 // only PF0 needs to be unlocked, other bits can't be locked GPIO_PORTF_AMSEL_R = 0x00; // 3) disable analog on PF GPIO_PORTF_PCTL_R = 0x00000000; // 4) PCTL GPIO on PF4-0 GPIO_PORTF_DIR_R = 0x0E; // 5) PF4,PF0 in, PF3-1 out GPIO_PORTF_AFSEL_R = 0x00; // 6) disable alt funct on PF7-0 GPIO_PORTF_PUR_R = 0x11; // enable pull-up on PF0 and PF4 GPIO_PORTF_DEN_R = 0x1F; // 7) enable digital I/O on PF4-0 }