TIM4C123G蓝牙小车是一款集成了TIM4C123G微控制器和蓝牙通信功能的小型智能车辆。用户可通过手机APP控制其行驶，实现远程操控与编程教育等功能。
```c
#include stdio.h
#include stdint.h
#include stdbool.h
#include inc/tm4c123gh6pm.h
#include inc/hw_memmap.h
#include inc/hw_types.h
#include driverlib/pwm.h
#include driverlib/gpio.h
#include driverlib/sysctl.h
#include driverlib/pin_map.h
#include driverlib/uart.h
#include driverlib/interrupt.h
#include inc/hw_gpio.h
#include inc/hw_ints.h
int uartmain(void) {
int i;
char thischar;
SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_XTAL_16MHZ | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN);
// Enable UART and GPIO peripherals
SysCtlPeripheralEnable(SYSCTL_PERIPH_UART1);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
GPIOPinConfigure(GPIO_PB0_U1RX);
GPIOPinConfigure(GPIO_PB1_U1TX);
// Configure the pins for UART operation
GPIOPinTypeUART(GPIO_PORTB_BASE, GPIO_PIN_0 | GPIO_PIN_1);
// Set up UART configuration with a baud rate of 9600 and other settings
UARTConfigSetExpClk(UART1_BASE, SysCtlClockGet(), 9600, (UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE | UART_CONFIG_PAR_NONE));
thischar = UARTCharGet(UART1_BASE);
// Check the received character and set i accordingly
if(thischar == a) { // 前进
i = 123;
} else if (thischar == b) { // 后退
i = 789;
} else if (thischar == s) { // 左转
i = 456;
} else if(thischar == n){// 右转
i=258;
}
UARTCharPut(UART1_BASE, thischar);
return i;
}
```
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