CC2530: 使用串口UART1配置ALT.1作为发送接收，串口助手收不到数据

我在使用CC2530串口UART1时，使用的是ALT.1，P0_4和P0_5作为发送和接收。

预编译配置为HAL_DMA       HAL_UART_DMA=2       ZTOOL_P2

配置完成后，串口助手接收不到数据。哪位大佬可以帮忙解决一下？

uint8 UART_Init(uint8 port)
{
halUARTCfg_t uartConfig;

uartConfig.configured = TRUE;
uartConfig.baudRate = HAL_UART_BR_9600;
uartConfig.flowControl = HAL_UART_FLOW_OFF;
uartConfig.rx.maxBufSize = 128;
uartConfig.tx.maxBufSize = 128;
uartConfig.flowControlThreshold = 64;
uartConfig.idleTimeout = 6;
uartConfig.intEnable = TRUE;
uartConfig.callBackFunc = UART_CallBack; //回调函数

return HalUARTOpen (port, &uartConfig);

}

void UART_CallBack(uint8 port, uint8 event)
{
uint8 data_TxLen = 0;
uint8 data_TxBuf[64] = {0};

if ((event & (HAL_UART_RX_FULL | HAL_UART_RX_ABOUT_FULL
| HAL_UART_RX_TIMEOUT)) && !data_TxLen)
{
data_TxLen = HalUARTRead( port, data_TxBuf, 80);

if(data_TxLen)
{
if(data_TxLen>64)
data_TxLen = 64;
memcpy(data_TxBuf, data_TxBuf, data_TxLen);

HalUARTWrite( port, data_TxBuf, data_TxLen);

memset(data_TxBuf, 0, 64);
data_TxLen = 0;
}
}
}

UART_Init(0x01);
HalUARTWrite(0x01, "UART1 can be used\n", sizeof("UART1 can be used\n"));