This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

LPC1114 GPIO P1.0~P1.3 doesn't work

I'm not able to make it work the GPIO P1.0-P1.3 of LPC1114. Both in hardware as in keil debug the GPIO's P1.0 dont clear.

int main()
{
        /* Enable AHB clock to the GPIO domain. */
        LPC_SYSCON->SYSAHBCLKCTRL |= (0x1UL << 16);  /* enable clock for IOCON      */
        LPC_SYSCON->SYSAHBCLKCTRL |= (0x1UL << 6);  /* enable clock for GPIO      */

        LPC_IOCON->R_PIO1_0 |= 0x01; /* P1.0 as GPIO      */
        LPC_GPIO1->DIR  |= (1UL <<  0);                /* P1.0 as GPIO      */
        LPC_GPIO1->DATA &= ~(1UL <<  0);   /* Clear P1.0      */ //*********Don't work

        while(1);
}

what's wrong with this code?

Parents
  • PIO1_0/AD1/CT32B1_CAP0/TMS 33
    PIO1_1/AD2/CT32B1_MAT0/TDO 34
    PIO1_2/AD3/CT32B1_MAT1/TRST/ 35
    PIO1_3/AD4/CT32B1_MAT2/SWD 39
    PIO1_4/AD5/CT32B1_MAT3/WAKEUP

    The MCB1000 schematic shows the functions of the pins.

    Does your board use a JTAG connector.. Is it possible that these pins are tied to
    Jtag. The MCB1000 does not have a jtag. but pin PIO1_3 goes to a Debug connector and
    to a header or socket.

Reply
  • PIO1_0/AD1/CT32B1_CAP0/TMS 33
    PIO1_1/AD2/CT32B1_MAT0/TDO 34
    PIO1_2/AD3/CT32B1_MAT1/TRST/ 35
    PIO1_3/AD4/CT32B1_MAT2/SWD 39
    PIO1_4/AD5/CT32B1_MAT3/WAKEUP

    The MCB1000 schematic shows the functions of the pins.

    Does your board use a JTAG connector.. Is it possible that these pins are tied to
    Jtag. The MCB1000 does not have a jtag. but pin PIO1_3 goes to a Debug connector and
    to a header or socket.

Children