Nimi2440 bare metal LED program Problems

Nimi2440 bare metal LED program problems-general Linux technology-Linux technology and application information, the following is a detailed description. I am a beginner. This is the code I wrote. There is no syntax error, but it is a logic error and cannot implement the desired result. Please advise !!

# Define GPBCON (* (volatile unsigned long *) 0x56000010)
# Define GPBDAT (* (volatile unsigned long *) 0x56000014)

# Define LED1_BCL (3 <(2*5 ))
# Define LED2_BCL (3 <(2*6 ))
# Define LED3_BCL (3 <(2*7 ))
# Define LED4_BCL (3 <(2*8 ))

# Define ledshortout (1 <(2*5 ))
# Define LED2_OUT (1 <(2*6 ))
# Define LED3_OUT (1 <(2*7 ))
# Define LED4_OUT (1 <(2*8 ))


# Define ledbench ON ~ (1 <5)
# Define LED2_ON ~ (1 <6)
# Define LED3_ON ~ (1 <7)
# Define LED4_ON ~ (1 <8)

# Define led0000off (1 <5)
# Define LED2_OFF (1 <6)
# Define LED3_OFF (1 <7)
# Define LED4_OFF (1 <8)

# Define BEEP_OFF ~ (1 <0)

Void delay (unsigned long MS)
{
For (; ms> 0; ms --);
}

Int main (void)
{
/* Set the led gpcon as the output */
GPBCON & = ~ (LED1_BCL | LED2_BCL | LED3_BCL | LED4_BCL );
GPBCON | = (led0000out | LED2_OUT | LED3_OUT | LED4_OUT );

/* Light LED1, delay for a period of time, and then extinguish LED1 */
GPBDAT = ledbench on & BEEP_OFF; // By the way, the sound of the buzzer is disabled, indicating that BEEP 1 is on and 0 is off.
Delay (1000 );
GPBDAT | = led0000off;
/*
GPBDAT = LED2_ON & BEEP_OFF;
Delay (10 );
GPBDAT | = LED2_OFF;

GPBDAT = LED3_ON & BEEP_OFF;
Delay (10 );
GPBDAT | = LED3_OFF;

GPBDAT = LED4_ON & BEEP_OFF;
Delay (10 );
GPBDAT | = LED4_OFF;
*/
Return 0;
}


My question is, why does the LED1 light no longer go out after the delay ?? Is the result different from the program I wrote ??