initialiazation of arm

hi,
I also modified initialization of PLL of lpc2214 as following way till i got same result.

         void init(void)
         {
                // Initial PLL & VPB Clock For ET-ARM7 STAMP LPC2119
                // Start of Initial PLL for Generate Processor Clock
                // PLL Configuration Setup
                // X-TAL =      11.0592
                // M(Multiply) = 3                3
                // P(Divide) = 2                  2
                // Processor Clock(cclk) = M x OSC
                //                       =      3*11.0592
                //                       =      33.1776
                // FCCO = cclk x 2 x P
                //      = 132.7104
                // VPB Clock(pclk) = 16.5888
                // Start of Initial PLL for Generate Processor Clock
                PLLCFG &= 0xE0;    // Reset MSEL0:4
                PLLCFG |= 0x02;    // MSEL(PLL Multiply) = 3
                PLLCFG &= 0x9F;    // Reset PSEL0:1
                PLLCFG |= 0x20;    // PSEL(PLL Devide) = 2
                PLLCON &= 0xFC;    // Reset PLLC,PLLE
                PLLCON |= 0x01;    // PLLE = 1 = Enable PLL

                PLLFEED = 0xAA;    // Start Update PLL Config
                PLLFEED = 0x55;
                while (!(PLLSTAT & 0x00000400));  // Wait PLL Lock bit
                PLLCON |= 0x02;    // PLLC = 1 (Connect PLL Clock)
                PLLFEED = 0xAA;     // Start Update PLL Config
                PLLFEED = 0x55;
                VPBDIV &= 0xFC;    // Reset VPBDIV
                VPBDIV |= 0x01;    // VPB Clock(pclk) = cclk / 1
                // End of Initial PLL for Generate Processor Clock

                // Start of Initial MAM Function
                MAMCR = 0x00;     // Disable MAM Function
                MAMTIM = 0x03;     // MAM Timing = 3 Cycle of cclk
                MAMCR = 0x02;     // Enable MAM = Full Function
                // End of Initial MAM Function
                // Start of Main Function Here
         }

Please help,
Girish

hi,
I also modified initialization of PLL of lpc2214 as following way till i got same result.

         void init(void)
         {
                // Initial PLL & VPB Clock For ET-ARM7 STAMP LPC2119
                // Start of Initial PLL for Generate Processor Clock
                // PLL Configuration Setup
                // X-TAL =      11.0592
                // M(Multiply) = 3                3
                // P(Divide) = 2                  2
                // Processor Clock(cclk) = M x OSC
                //                       =      3*11.0592
                //                       =      33.1776
                // FCCO = cclk x 2 x P
                //      = 132.7104
                // VPB Clock(pclk) = 16.5888
                // Start of Initial PLL for Generate Processor Clock
                PLLCFG &= 0xE0;    // Reset MSEL0:4
                PLLCFG |= 0x02;    // MSEL(PLL Multiply) = 3
                PLLCFG &= 0x9F;    // Reset PSEL0:1
                PLLCFG |= 0x20;    // PSEL(PLL Devide) = 2
                PLLCON &= 0xFC;    // Reset PLLC,PLLE
                PLLCON |= 0x01;    // PLLE = 1 = Enable PLL

                PLLFEED = 0xAA;    // Start Update PLL Config
                PLLFEED = 0x55;
                while (!(PLLSTAT & 0x00000400));  // Wait PLL Lock bit
                PLLCON |= 0x02;    // PLLC = 1 (Connect PLL Clock)
                PLLFEED = 0xAA;     // Start Update PLL Config
                PLLFEED = 0x55;
                VPBDIV &= 0xFC;    // Reset VPBDIV
                VPBDIV |= 0x01;    // VPB Clock(pclk) = cclk / 1
                // End of Initial PLL for Generate Processor Clock

                // Start of Initial MAM Function
                MAMCR = 0x00;     // Disable MAM Function
                MAMTIM = 0x03;     // MAM Timing = 3 Cycle of cclk
                MAMCR = 0x02;     // Enable MAM = Full Function
                // End of Initial MAM Function
                // Start of Main Function Here
         }

Please help,
Girish

I haven't looked into the individual steps you use when setting up the PLL, but the user manual clearly describes the requried steps. And it's important that the PLL constants also are correctly selected.

But back to the oscillator - note that the frequency is not the only parameter for a crystal.

hi,

As you suggested i tested crystal.The waveform and voltage across crystal are according to specs.
The PLL setting is done as given in user manual.which is also written in comment in above code.
so is there is any issue of mode of arm like user,Data Abort,udef,IRq,supervisory etc
& if so it is how to sort out this issue?
Thanks
Girish

You tested the crystal? You have equpiment to measure, and characterize, a crystal?

What results did you get?

What inductances did you measure?
What static capacitance?
What motional capacitance?
What load capacitance?
What drive level?
What equivalent series resistance?
What operating mode - fundamental or third overtone?
What cut?
What temperature range?
...

A crystal really is not just a magic device with a stamped frequency on the case. With wrong type of crystal and/or wrong burden capacitors in relation to processor, you can get into lots of troubles with oscillators that never starts, or starts sometimes, who only start within specific temperature ranges or depending on of voltage and noise levels etc.

So the startup code should match the recommended code from the processor documentation, but the capacitors, trace layout and crystal should also match the recommendations. And different processors are more or less sensitive to variations. Some processors can handle almost everything, while other processors have very narrow windows where the oscillator will work well - or at all.

Dear Sir,

As early stated i didn't went so deeply for testing crystal.
I checked voltage across crystal and waveform of crystal.It was OK.
If Agreed the crystal is faulty then the issue is if i program the hex file of old programmer in same IC it works successfully.
Only if i program the same ic with hex file of my program then i have to touch the probe of oscilloscope to one of crystal pin then it starts working.
How i can convinced to my senior on this issue?

I also grounded body of crystal.
will you please help for sorting out this,

Thanks in advance,

Girish

I checked voltage across crystal and waveform of crystal.It was OK.
yes, you said that already, to have "checked voltage across crystal" you have touched it with a scope probe

With Proper grounding and power traces as this board is of commercial product.
that is no guarantee there are many shoddy "commercial products" how long are the traces to xtal and burden caps? how long traces to and what are the Vdd decoupling caps?

Erik

Another thing - does your processor always make use of an external oscillator, or does it boot with an internal RC oscillator like 23xx does? In that case - what code do you have that turns on the external oscillator and waits for it to stabilize before it may be connected for use by the core?

You post code for the PLL (seems to be different PLL settings for the two codes) but the PLL needs input. Is the oscillator spun up correcly before connected?

Just show him/her!

Get him/her to help you: he/she knows you, knows your project, can see your hardware, can probe it him/herself, can see your software, etc, etc - nobody on a forum has any of those advantages!