Content originally posted in LPCWare by milspect18 on Fri Nov 14 14:50:04 MST 2014 I am new to using the LPC1114FN28/102 and am having some issues with basic GPIO functionality. I have written a very simple program to toggle all of the GPIO0 pins on and off and GPIO0_4 and GPIO0_5 do not seem to be working, though all others seem to be fine.
The program code is as follows:
#include "lpc111x.h"
// prototypes
void Delay();
int main()
{
GPIO0DIR = 0x0FFF; // set the GPIO0_0 through GPIO0_11 bits for output
while (1)
{
GPIO0DATA = 0x0FFF; // set GPIO0_0..11
Delay(); // delay for visual effect
GPIO0DATA = 0x0000; // clear GPIO0_0..11
Delay(); // delay for visual effect
}
return 0;
}
//*****************************************************************************
// @brief: this is just an empty while loop to eat processor cycles and control
// flow of the program. counter is volatile for optimization
// portability
//*****************************************************************************
void Delay()
{
int volatile counter = 0;
while (counter < 250000)
{
counter++;
}
}
I have tried to set the bits in the alternate function registers as these pins share I2C functions... I also tried to set just these bits individually, yet I cannot seem to get these to work...
I have the chip in a minimal environment on a breadboard with a 3.3v supply and an FTDI USB to Serial adapter for flashing. I tried another chip I had here and got the same results...
Content originally posted in LPCWare by milspect18 on Fri Nov 14 15:13:40 MST 2014 I am now trying to calculate the appropriate force to apply from my palm to my face... Thank you for the reply!!
