dm368 uart0 测试不通过

TI的技术人员及各位大牛：

小弟在UART0测试的时候遇到一些问题，状态寄存器LSR在putchar之后值不会改变

参数设置如下：

divisor = (24000000 / baudrate) / 16;

uart_handle = ( UART_Handle )&UART_MODULE_0;

uart_handle->regs->PWREMU_MGMT = 0; // Reset UART TX & RX components

_wait( 100 );

uart_handle->regs->DLL = (divisor & 0xff); // Set baud rate
uart_handle->regs->DLH = (divisor >> 8);

uart_handle->regs->FCR = 0x0007; // Clear UART TX & RX FIFOs
uart_handle->regs->FCR = 0x0000; // Non-FIFO mode
uart_handle->regs->IER = 0x0007; // Enable interrupts
uart_handle->regs->LCR = 0x0003; // 8-bit words,
// 1 STOP bit generated,
// No Parity, No Stick paritiy,
// No Break control
uart_handle->regs->MCR = 0x0000; // RTS & CTS disabled,
// Loopback mode disabled,
// Autoflow disabled

//uart_handle->regs->PWREMU_MGMT = 0xE001; // Enable TX & RX componenets
uart_handle->regs->PWREMU_MGMT = 0x6001;

主要程序如下：

while( EVMDM365_UART_xmtReady( uart0 ) ) // Wait for TX ready
{
if ( timeout-- < 0 )
return -1;
}

EVMDM365_UART_putChar( uart0, tx[i] ); // Write 1 byte

/* RX */
timeout = test_timeout;
while( EVMDM365_UART_rcvReady( uart0 ) ) // Wait for Rx ready
{
if ( timeout-- < 0 )
return -1;
}

EVMDM365_UART_getChar( uart0, &rx[i] ); // Read 1 byte