Search found 33 matches

I know this is an old post! but just to help anyone trying to use the program memory as EEPROM - check MIN_FLASH_WRITE - for the dsPIC33CH it's 8 so a write of 4 bytes (as shown below) is 'ignored' :o ...

dsPIC33CH128MP202 2-core 200MHz lots of goodies
28-pin SOP - ridiculous Razz

You're correct about the signal integrity - but I'll live with it for now.
It worked OK on the hardware!
I now have the slave sampling continuously and the slave sample rate being changed by the mas ...

I found that bit of the datasheet quite confusing...
I'll try a few configurations on the actual hardware and come back after I've finished 'hacking'

Is it possible to share (internally) an ADC pin in the slave and master code?
e.g. pin1
master:AN1/RA1
slave:S1AN15/S1RA1
Or does the CPRA fuse setting mean that the pin is physically 'master' o ...

All working fine now!
(rise time on the 'scope is well within spec)
Just one gotcha I queried with CCS:
if the oscillator is set in the header file i.e.
#use delay(internal=60MHz)
the compiler i ...

Richard from CCS had some helpful info:
(I'll do some more investigation when I get a chance...)
I reviewed what you have and it is correct to run the device at 60MHz, 15MIPS. From the testing I di ...

all power supply pins and decoupling look good.
PSU good.
I don't think I can output CLKOUT.
I'll just omit the 'fail safe clock monitor' and 'clock switching' fuse since I think it's really intend ...

can also use '#use delay(internal=120MHz)' if I omit '#FUSES CKSFSM'
fast serial comms works OK so now I'm doubtful of the CKSFSM.
Is this one for CCS or do you have any other ideas?

I've now got an extra tant right next to the chip (it's powered by a TSR1-2433)
I have a 4-layer board with good power planes - so I think the hardware is good.
If I include the #FUSES CKSFSM then t ...

Thanks! thinking about it you must be correct. I'll check the PCB (bit more difficult with the customer's one Rolling Eyes

)
I had a play:
If I ask for 30MHz the compiler gets 29922200Hz.
which is PLL x ...

Thanks for the quick reply...
The datasheet says:
'The FRC oscillator is a fast (7.37 MHz ±2% nominal) internal RC oscillator'
So I think I'm specifying it correctly - am I missing something obvio ...

Hi,
I'm using a dsPIC30F3012 which isn't letting me use the PLL!
version 5.115

easiest program I could make:

#include <30F3012.h>
#device ICSP=1

//#use delay(internal=29.48MHz ...

Thanks,
I didn't spot the MAX31855 that's a great one chip solution. I'll get on with the PCB design ASAP!
Al

sorry, forgot to mention my temperatures are up to 300 degrees so I can't use the chip solution.