Uploading firmware to LPC11c14, What can I set for converting high level output to low level as initial condition.

[lpcware]

Content originally posted in LPCWare by ctchen on Fri Aug 21 20:15:59 MST 2015
Dear everyone.

When I upload the firmware to LPC11C14, Digital output ports are always high level.

So, application test is inconvenient.

What can I do something in order to solve this problem that is converting high level to low level as initial condition ?

My development environment :
(1) LPC11C14
(2) IAR EWARM 5.5
(3) Segger J-LINK

[lpcware]

Content originally posted in LPCWare by R2D2 on Mon Aug 24 23:01:29 MST 2015
I'm not sure what you are trying to do in detail  :~

Default pin status is input / high, so if that's a problem during downloading / reset you have to add a pulldown resistor or inverter...

[lpcware]

Content originally posted in LPCWare by ctchen on Mon Aug 24 18:38:12 MST 2015
Despite of your kine, I'm so sorry for late reply because of my other work.

My simplified source code is bellow

void GpioInit(void)
{
  // Set to inputs
  GPIO0DIR = \
  GPIO1DIR = \
  GPIO2DIR = \
  GPIO3DIR = 0;
 
  // Reset all GPIO pins to default primary function
  IOCON_PIO2_6 = \
  IOCON_PIO2_0 = \
  IOCON_RESET_PIO0_0 = \
  //IOCON_PIO0_1 = 0x12 ;// Enable CT32B0_MAT2, Pull-Up
  IOCON_PIO1_8 = \
  IOCON_PIO0_2 = 0x10 ;   // Low Side Enable for Sol-A
  IOCON_PIO2_7 = \
  IOCON_PIO2_8 = \
  IOCON_PIO2_1 = \
  IOCON_PIO0_3 = 0x10 ;   // Low Side Enable for Sol-B
  IOCON_PIO1_9 = \
  IOCON_PIO2_4 = \
  IOCON_PIO2_5 = \
  IOCON_PIO0_6 = \
  IOCON_PIO0_7 = \
  IOCON_PIO2_9 = \
  IOCON_PIO2_10 = \
  IOCON_PIO2_2 = \
  IOCON_PIO0_8 = \
  IOCON_SWCLK_PIO0_10 = \
  IOCON_PIO2_11 = \
  IOCON_PIO3_0 = \
  IOCON_PIO3_1 = \
  IOCON_PIO2_3 = \
  IOCON_PIO3_2 = \
  IOCON_PIO1_5 = \
  IOCON_PIO3_3 = 0x50 ;
  IOCON_R_PIO1_0 = \
  IOCON_PIO0_4 = \
  IOCON_PIO0_5 = 0x00;
}


void InitClock(Int32U clock, Int32U ahbdiv)
{
    SYSOSCCLTRL = (MAIN_OSC_FREQ>(20MHZ))?(0x2):(0x0);        // Sys Ocilator Enable, 12MHz
    PDRUNCFG_bit.SYSOSC_PD = 0;                               // Power Up SYS Oscilator
    PDRUNCFG_bit.IRC_PD = 0;                                  // Enable Internal RC oscilator
    /*Select internal RC oscilator for
    Sys clock source*/
    MAINCLKUEN = 0;
    MAINCLKSEL = 0;
    MAINCLKUEN = 1;
    /*Configure SYS PLL*/
    /*Power Down SYS PLL*/
    PDRUNCFG_bit.SYSPLL_PD = 1;
    /*Select Sys Oscilator for
    SYS PLL source*/
    SYSPLLCLKUEN = 0;
    SYSPLLCLKSEL = 1;
    SYSPLLCLKUEN = 1;
    /*Calc M*/
    Int32U m = clock/MAIN_OSC_FREQ - 1 ;
   
    assert(m<32);
    /*Configure PLL frequency*/
    SYSPLLCTRL =  (m)    /*MSEL*/
             |  (1<<5) /*PSEL = 1*/ // original value 0<<5
             |  (0<<7) /*DIRECT = 0*/
             |  (0<<8); /*BYPASS=0*/
   
    /*Power Up PLL*/
    PDRUNCFG_bit.SYSPLL_PD = 0;
    /*Set Sys AHB Clock devider*/
    SYSAHBCLKDIV_bit.DIV = ahbdiv;
    /*Wain until PLL locks*/
    while(!(SYSPLLSTAT_bit.LOCK));
    /*Select Sys PLL Output for
    Sys clock source*/
    MAINCLKUEN = 0;
    MAINCLKSEL = 3;
    MAINCLKUEN = 1;
}


/* PWM Generation using TMR32B0 & TMR32B1 */
void _PWM32BIT_INIT()
{
    IOCON_PIO0_1 = 0x0 ;
    IOCON_PIO0_1 = 0x12 ;// Enable CT32B0_MAT2, Pull-Up
    IOCON_PIO0_2 = 0x10 ;   // Low Side Enable for Sol-A (Pull-Up)

    IOCON_R_PIO1_1 = 0x0 ;
    IOCON_R_PIO1_1 = 0x13 ;  // Enable CT32B0_MAT3, Pull-up
    IOCON_PIO0_3 = 0x10 ;   // Low Side Enable for Sol-B (Pull-Up)

    GPIO0DIR = 1<<2 | 1<<3 ;    // Define as output
    GPIO0DATA = 1<<2 | 1<<3 ;   // Enable Output PIO0_2 & PIO0_3
   
    SYSAHBCLKCTRL_bit.CT32B0 = 1 ;        //  Enable TIMER 0 clocks
    SYSAHBCLKCTRL_bit.CT32B1 = 1 ;        //  Enable TIMER 1 clocks

    TMR32B0MR3 = Max_Duty ;  //period, 9600 : 5kHz, 4800000 : 10Hz
    TMR32B1MR3 = Max_Duty ;  //period, 9600 : 5kHz, 4800000 : 10Hz
   
    // Match Control Register for MR2 & MR3
    TMR32B0MCR_bit.MR3I = 0;   // Enable Interrupt on MR3
    TMR32B0MCR_bit.MR3R = 1;   // Enable reset on MR3
    TMR32B0MCR_bit.MR3S = 0;   // Disable stop on MR3
   
    TMR32B1MCR_bit.MR3I = 0;   // Enable Interrupt on MR2
    TMR32B1MCR_bit.MR3R = 1;   // Enable reset on MR2
    TMR32B1MCR_bit.MR3S = 0;   // Disable stop on MR2
   
    TMR32B0TC = 0 ;
    TMR32B1TC = 0 ;
   
    // PWM Control Register
    TMR32B0PWMC_bit.PWM2ENA = 1 ;     // Enable PWM ch2
    TMR32B1PWMC_bit.PWM0ENA = 1 ;     // Enable PWM ch0
   
    // Timer Control Register
    TMR32B0TCR_bit.CE = 1 ;
    TMR32B1TCR_bit.CE = 1 ;
}

inline void _PWM_SIG_INITIALIZATION(Int32U duty_A, Int32U duty_B)
{
  unsigned int dumy_cnt = 0 ;
  for(dumy_cnt = 0; dumy_cnt < 5000; dumy_cnt++)
  {
    TMR32B0MR2 = Max_Duty - duty_A ;
    TMR32B1MR0 = Max_Duty - duty_B ;
  }
}

int main(void)
{
    SYSAHBCLKCTRL_bit.GPIO = 1 ;     // Enable GPIO Clock
    SYSAHBCLKCTRL_bit.IOCON = 1 ;     // Enable IOCON Clock
   
    InitClock(48MHZ, 1) ;            // Init clock, 132MHz / 3 = 48MHz
    GpioInit();                       // Set all pins as input ports except some part
    _PWM32BIT_INIT() ;              // Meaning of function input, Enable Timer. Ticks 10 times per second
   
    while(1)
    {
          _PWM_SIG_INITIALIZATION(5000, 5000) ;
    }
}

[lpcware]

Content originally posted in LPCWare by Badman on Sat Aug 22 03:07:13 MST 2015
Show your code.