RTOS/AM3352: RTOS/AM3352 call UART_open() API crash

Part Number:AM3352

Tool/software: TI-RTOS

Dear sir:

    I designed a example for test uart5,I modify xxx_pinmux_data.c and xxx_pinmux.c,

on xxx_pinmux_data.c,I add :

static pinmuxPerCfg_t gUart5PinCfg[] =
{
{
/* MyUART1 -> uart5_rxd -> V4 */
PIN_LCD_DATA14, 0, \
( \
PIN_MODE(4) | \
((PIN_RX_ACTIVE) & (~PIN_PULL_UD_EN & ~PIN_PULL_TYPE_SEL)) \
) \
},
{
/* MyUART1 -> uart5_txd -> H18 */
PIN_RMII1_REFCLK, 0, \
( \
PIN_MODE(3) | \
((0x38) & (~PIN_PULL_UD_EN & ~PIN_PULL_TYPE_SEL & ~PIN_RX_ACTIVE)) \
) \
},
{PINMUX_INVALID_PIN}
};
static pinmuxPerCfg_t gUart0PinCfg[] =
{
{
/* UART 0 -> uart0_rxd -> E15 */
PIN_UART0_RXD, 0, \
( \
PIN_MODE(0) | \
((PIN_PULL_TYPE_SEL | PIN_RX_ACTIVE) & (~PIN_PULL_UD_EN)) \
) \
},
{
/* UART 0 -> uart0_txd -> E16 */
PIN_UART0_TXD, 0, \
( \
PIN_MODE(0) | \
((PIN_PULL_TYPE_SEL) & (~PIN_PULL_UD_EN & ~PIN_RX_ACTIVE)) \
) \
},
{PINMUX_INVALID_PIN}
};

static pinmuxModuleCfg_t gUartPinCfg[] =
{
{0, TRUE, gUart0PinCfg},
{5, TRUE, gUart5PinCfg},
{CHIPDB_INVALID_INSTANCE_NUM}
};

and on xxx_pinmux.c,I modify on function Board_pinmuxConfig :

status = PINMUXModuleConfig(CHIPDB_MOD_ID_UART, 0U, NULL);

if(S_PASS == status)
{
status = PINMUXModuleConfig(CHIPDB_MOD_ID_UART, 5U, NULL);
}

and then I gmake the borad_lib.

after this,on my test project,

I use below methord to call UART_open();

UART_HwAttrs uart_cfg;
UART_Params params;
UART_Handle uart_handle_5 = NULL;

UART_socGetInitCfg (5, &uart_cfg);
UART_socSetInitCfg (5, &uart_cfg);

UART_Params_init(&params);

uart_handle_5 = UART_open(5,&params);

when execut to UART_open();

the ccs tips:

CortxA8: Unhandled ADP_Stopped exception 0x80024890

I don't know what cause this issue,please help me to resolve .

thanks!