HELP WITH THE TODOs'

#include

typedef enum {baud9600, baud19200, baud38400, baud57600} UARTBaudRate_t;

#define no_API 1

#if no_API

int main(void) {

WDT_A_hold(WDT_A_BASE);

eUSCI_UART_Config uartConfig = { EUSCI_A_UART_CLOCKSOURCE_SMCLK, // SMCLK Clock Source = 3MHz 19, // UCBR = 19 8, // UCBRF = 8 0x55, // UCBRS = 0x55 (table lookup for 0.5) EUSCI_A_UART_NO_PARITY, // No Parity EUSCI_A_UART_LSB_FIRST, // LSB First EUSCI_A_UART_ONE_STOP_BIT, // One stop bit EUSCI_A_UART_MODE, // UART mode EUSCI_A_UART_OVERSAMPLING_BAUDRATE_GENERATION // Oversampling };

UART_initModule(EUSCI_A0_BASE, &uartConfig); UART_enableModule(EUSCI_A0_BASE); GPIO_setAsPeripheralModuleFunctionInputPin(GPIO_PORT_P1, GPIO_PIN2 | GPIO_PIN3, GPIO_PRIMARY_MODULE_FUNCTION);

char rChar, tChar; int i=0; while (1) { if (UART_getInterruptStatus (EUSCI_A0_BASE, EUSCI_A_UART_RECEIVE_INTERRUPT_FLAG) == EUSCI_A_UART_RECEIVE_INTERRUPT_FLAG) { rChar = UART_receiveData(EUSCI_A0_BASE); i++;

// Depending on if the received char is a Number, a Letter, or Otherwise, the transmit char is N, L or O if (('0'<=rChar) && (rChar <= '9')) tChar = 'N'; else if ((('a'<=rChar) && (rChar <= 'z')) || (('A'<=rChar) && (rChar <= 'Z'))) tChar = 'L'; else tChar = 'O';

if (UART_getInterruptStatus (EUSCI_A0_BASE, EUSCI_A_UART_TRANSMIT_INTERRUPT_FLAG) == EUSCI_A_UART_TRANSMIT_INTERRUPT_FLAG) UART_transmitData(EUSCI_A0_BASE, tChar); }

switch (i) { // After analyzing 5 characters, it switches the speed to 19600 case 5: uartConfig.clockPrescalar = 9; uartConfig.firstModReg = 12; uartConfig.secondModReg = 0x22; // table lookup for 0.25 UART_initModule(EUSCI_A0_BASE, &uartConfig); UART_enableModule(EUSCI_A0_BASE); i++; break;

// TODO #1: (10 points) // add code here to support the other two baudrates enumarted in this program (at the top) case 10:

i++; break;

case 15: break; } }

}

#else

// TODO #2: (10 points) write a comment above each function briefly describing what it does. // TODO #3: (30 points) write the body of all the functions

void InitUART(uint32_t moduleInstance, const eUSCI_UART_Config *uartConfig_p, uint_fast8_t selectedPort, uint_fast16_t selectedPins) { }

void UpdateUART(uint32_t moduleInstance, const eUSCI_UART_Config *uartConfig_p) { }

bool UARTHasChar(uint32_t moduleInstance) { }

uint8_t UARTGetChar(uint32_t moduleInstance) { }

bool UARTCanSend(uint32_t moduleInstance) { }

void UARTPutChar(uint32_t moduleInstance, uint8_t tChar) { }

void UARTSetBaud(uint32_t moduleInstance, eUSCI_UART_Config *uartConfig_p, UARTBaudRate_t newBaud) { }

int main(void) { WDT_A_hold(WDT_A_BASE);

eUSCI_UART_Config uartConfig = { EUSCI_A_UART_CLOCKSOURCE_SMCLK, // SMCLK Clock Source = 3MHz 19, // UCBR = 19 8, // UCBRF = 8 0xAA, // UCBRS = 0xAA EUSCI_A_UART_NO_PARITY, // No Parity EUSCI_A_UART_LSB_FIRST, // LSB First EUSCI_A_UART_ONE_STOP_BIT, // One stop bit EUSCI_A_UART_MODE, // UART mode EUSCI_A_UART_OVERSAMPLING_BAUDRATE_GENERATION // Oversampling };

InitUART(EUSCI_A0_BASE, &uartConfig, GPIO_PORT_P1, GPIO_PIN2 | GPIO_PIN3);

uint8_t rChar, tChar; int i = 0; while (1) { if (UARTHasChar(EUSCI_A0_BASE)) { rChar = UARTGetChar(EUSCI_A0_BASE); i++;

// Depending on if the received char is a Number, a Letter, or Otherwise, // the transmit char is N, L or O if (('0'<=rChar) && (rChar <= '9')) tChar = 'N'; else if ((('a'<=rChar) && (rChar <= 'z')) || (('A'<=rChar) && (rChar <= 'Z'))) tChar = 'L'; else tChar = 'O';

if (UARTCanSend(EUSCI_A0_BASE)) UARTPutChar(EUSCI_A0_BASE, tChar); }

switch (i) { // After analyzing 5 characters, it switches the speed to 19600 case 5: UARTSetBaud(EUSCI_A0_BASE, &uartConfig, baud19200); i++; break;

case 10: UARTSetBaud(EUSCI_A0_BASE, &uartConfig, baud38400); i++; break; case 15: UARTSetBaud(EUSCI_A0_BASE, &uartConfig, baud57600); } } } #endif