Programming LPC 2388

Did you remember to configure all port pins to be outputs? Right now, it sounds like they are configured as inputs, and that you have managed to turn off the internal weak pull-up that they normally have directly from reset.

Thank you for the reply, well initially PINMODE registers were all zero and i used the same but when, no output was seen, i changed the value of PINMODE registers, my IODIR0, IODIR1, FIO2DIR, FIO3DIR,FIO4DIR are all with the values FFFFFFFF in the begining thats means i ahve even chaged the direction....ok one sec what i will do is i will put my program here...

#include <LPC23xx.H>

void delay_sec(unsigned int a);

int main()

{
PINSEL0 = 0x00000000; // p0.0 to p0.15 made as GPIO
PINSEL1 = 0x00000000; //p0.16 to p0.31 made as GPIO
PINSEL2 = 0x00000000; // p0.0 to p0.15 made as GPIO
PINSEL3 = 0x00000000; //p0.16 to p0.31 made as GPIO
PINSEL4 = 0x00000000; // p0.0 to p0.15 made as GPIO
PINSEL5 = 0x00000000; //p0.16 to p0.31 made as GPIO
PINSEL6 = 0x00000000; // p0.0 to p0.15 made as GPIO
PINSEL7 = 0x00000000; //p0.16 to p0.31 made as GPIO
PINSEL8 = 0x00000000; // p0.0 to p0.15 made as GPIO
PINSEL9 = 0x00000000; //p0.16 to p0.31 made as GPIO
PINSEL10 = 0x00000000; //p0.16 to p0.31 made as GPIO

PINMODE0 = 0xaaaaaaaa;
PINMODE1 = 0xaaaaaaaa;
PINMODE2 = 0xaaaaaaaa;
PINMODE3 = 0xaaaaaaaa;
PINMODE4 = 0xaaaaaaaa;
PINMODE5 = 0xaaaaaaaa;
PINMODE6 = 0xaaaaaaaa;
PINMODE7 = 0xaaaaaaaa;
PINMODE8 = 0xaaaaaaaa;
PINMODE9 = 0xaaaaaaaa;

FIO2DIR = 0xffffffff;
FIO3DIR = 0xffffffff;
FIO4DIR = 0xffffffff;
IODIR0 = 0xffffffff;
IODIR1 = 0xffffffff;

while(1)
{ FIO2CLR = 0xffffffff;
FIO3CLR = 0xffffffff;
FIO4CLR = 0xffffffff;
IOCLR0 = 0xffffffff;
IOCLR1 = 0xffffffff;

}
} please let me know if some thing is wrong in here...

It looks like you're mixing calls to legacy IO and Fast IO registers. I would enable fast IO registers for PORT0 and 1, by setting GPIOM in SCS (on the 2368, your chip may be different).

Also, check your FIOMASK registers and make sure they are 0'd. They should be by default on reset, but it doesn't hurt to check.

You may also consider toggling the pins, that way if you can look at them on a scope you might be able to see something move around, and it will help you determine if you have pull-up/down issues.

ND

Thank You very much for your reply, well, to set PORT0 and 1 to fast GPIO the instruction is same but then i feel it wont make a difference and what you said is very true there is no harm in making everything sure...I shall do it right away... Earlier i thought of toggling PINS i had even connected LEDs to see them blinking but when nothing happened i got desperate and thought let me check if it is even making it low...LOL

well any way...i got one more doubt its about hardware, when i download the program through serial port, the chip is in the ISP mode, once the program is downloaded i press reset to run the user program,but next time when i again click start on Flash Magic without even pressing reset key , its starts downloading, so does this mean, the controller is still in ISP mode and it is unable to come out of ISP mode, how do i make sure that controller is out of ISP mode?

I would appreciate the kind responses
Thank you in advance.

According to the LPC23XX User manual:

UM10211
LPC23XX User manual
Rev. 01 - 11 March 2008 User manual

Chapter 29: LPC23XX Flash memory programming firmware

4. Boot process flowchart

Fig 131. Boot process flowchart

Enter ISP MODE? (P2.10=LOW)

Hello all,

i have exactly the same problem.
I also have 2.3v on pins.

Is your oscillator running.
Here on my board it isnt and i dont know why.
(Resetpin is high resetout and ISP (p2.10) are high too)

Have you solved your problem already? Im very intrested in getting my controller running.

Thanks in advance!

Note that when the LPC23xx processors boots, they don't know if there is an external oscillator or not. The LPC23xx chips does not have any configuration fuses for specifying the oscillator.

If the chip is unprogrammed (invalid checksum for interrupt vector table), or it is unlocked and you are forcing it to enter the monitor program, then it will enter the monitor and continue to run with the built-in RC oscillator until you use FlashMagic and sends info about the clock frequency of any external crystal.

If the chip is locked, it may ignore the P2.10 pin. If it is programmed with a broken firmware, that doesn't turn on the oscillator, then you will not see any external oscillator, since the processor will either hang, or process garbage instructions using the internal RC oscillator.

Hello Per,

thanks a lot for replying so fast.

Hmm...ok i only have experiance with the lpc2129.
Its oscillator runs when powering it up with no code on it.

So maybe you can help me to get my controller running.
What i did so far:
I have set up a new project with the the keil µvision 3.85 eval. I have chosen the lpc2388 controller.

It asked me if i would like to copy the philips lpc2300 startup file to the project. i have chosen "yes"

i created a "main.c" with exactly the same code posted above.

I flashed the hexfile with FlashMagic but controller is not running.

What could be wrong?

in the startupfile there is a comment:
---
; * NO_CLOCK_SETUP: when set the startup code will not initialize Clock
; * (used mostly when clock is already initialized from script .ini
; * file).
---

What does this mean and where is this script .ini file?

Thank you in advance...

Script ini files is something you write, where you let the debugger run a script - for example to load your code into RAM (instead of to flash) and the move PC to the start of the program.

But the script ini files are only meaningful for RAM debugging. For a real program flashed into the chip, there will not be any debugger that may modify any processor registers. Unless your aim is to run with the built-in RC oscillator, your code - either the assembler startup file you got from Keil, or C code called from main() - must configure which oscillator to use, and optionally configure and turn on the PLL.

If you open the startup file, you will notice in the bottom left that it has two tabs. Switch to the wizard tab, and go through the configuration options available for the startup file. For configuring the PLL, NXP has an Excel sheet available on the product page.

By the way - have you tried to download and run the Blinky project?

Hello,

thank you for your explainations and for the tip with the Configuration wizard, i didnt know that.

I just tried the blinky project from the Keil\ARM\Boards\Keil\MCB2300\Blinky directory.

I changed the target from lpc2376 to lpc2388 but it is not running too...still the same pins 2.3v osc not running... :-((

hmm the setup of the pll seems to fit...xtal = 12MHz

i would be happy if you have any more ideas what to do...

Thank you very much...