【分享TI LM3S811开发板使用心得通过无线模块AP220通讯】

2万 · 2011-12-14 15:01

AP220无线模块，是很稳定的套件包括收发模块和一个USB转串模块，这样就可直接同电脑通讯了。
资料传下：

dfrobot-apc220-manual1.pdf (213.52 KB)
中文资料：

APC220.pdf (340.24 KB)

用LM3S811的串口1，通读数率为9600，

程序如下：
//*****************************************************************************
//
// Configure the UART and perform reads and writes using polled I/O.
//
//*****************************************************************************
int
main(void)
{

//
// Set the clocking to run directly from the external crystal/oscillator.
// TODO: The SYSCTL_XTAL_ value must be changed to match the value of the
// crystal on your board.
//
SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_OSC | SYSCTL_OSC_MAIN |
               SYSCTL_XTAL_6MHZ);
//
// Enable the peripherals used by this example.
// The UART itself needs to be enabled, as well as the GPIO port
// containing the pins that will be used.
//
SysCtlPeripheralEnable(SYSCTL_PERIPH_UART1);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
//
// Configure the GPIO pin muxing for the UART function.
// This is only necessary if your part supports GPIO pin function muxing.
// Study the data sheet to see which functions are allocated per pin.
// TODO: change this to select the port/pin you are using
//
GPIOPinConfigure(GPIO_PD2_U1RX);
GPIOPinConfigure(GPIO_PD3_U1TX);
//
// Since GPIO D2 and D3 are used for the UART function, they must be
// configured for use as a peripheral function (instead of GPIO).
// TODO: change this to match the port/pin you are using
//
GPIOPinTypeUART(GPIO_PORTD_BASE, GPIO_PIN_2 | GPIO_PIN_3);
//
// Configure the UART for 9600, 8-N-1 operation.
// This function uses SysCtlClockGet() to get the system clock
// frequency.  This could be also be a variable or hard coded value
// instead of a function call.
//
UARTConfigSetExpClk(UART1_BASE, SysCtlClockGet(), 9600,
                     (UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |
                     UART_CONFIG_PAR_NONE));
//
// Put a character to show start of example.  This will display on the
// terminal.
//
while(1)
{
UARTCharPut(UART1_BASE, 0xAA);
}
//

//return(0);
}

工程文件打包：

21ICUART.rar (1.37 MB)

最终效果：