DSPIC30F4012 v230 Source Code

[6666]

After a lot of messing around I have finally got a verify complete on moodz hex file on a 4012

The pickit3 is plugged into a direct usb port and I had to breadboard an adaptor for the 4012 as the icsp board does not come with a 28 pin zif socket for a 4012. I have ordered a nice 28 pin adaptor off fleabay.
Now to see if any pulses are coming out of the chip.

[moodz]

After a lot of messing around I have finally got a verify complete on moodz hex file on a 4012

The pickit3 is plugged into a direct usb port and I had to breadboard an adaptor for the 4012 as the icsp board does not come with a 28 pin zif socket for a 4012. I have ordered a nice 28 pin adaptor off fleabay.
Now to see if any pulses are coming out of the chip.

Thats the most comfortable workbench I have seen for a while ... you may have a problem seeing pulses as you have no LCD display or rotary to set the TX period which I think is set to 0 after you program the chip. The last hex file published needs the 10 Mhz crystal also. There is a serial port however it works only with the pickit2 UART tool .... the pickit3 does not have this feature as far as i know. I suppose I could publish a hex file with "default" Tx and sample pulses set so you can test ... I will look into it tonight.

moodz.

[6666]

Hi moodz
yes its a comfy work bench
well I connected only pins 13,20,28 and 8,19,27 and 1 and 10,11,12 and 6,7

but no pulses,

I used the first hex code no xtal just to get it going
but i see you say it needs the lcd and rotary switch to set the tx pulse and samples from zero.
I was just about to ask if the code has default values but you read my mind

if its possible to have a default code that would be very handy thanks


I used the hex code from post 20
and remembered this

"ALSO NOTE ... you must wire the ZERO button though .... the code expects you to press this once to commence operation after first power up .... if people dont like this I will remove this "feature"

just dabbed an earth on pin 12 (the zero button) but no pulses, guess its set to zero in code


regarding the 10 meg xtal, when did the 4012 code need that ?, I know you changed the 4011 code for the xtal
I have not tried the TX HI and LOW files yet
6666

[moodz]

Hi moodz
yes its a comfy work bench
well I connected only pins 13,20,28 and 8,19,27 and 1 and 10,11,12 and 6,7

but no pulses,

I used the first hex code no xtal just to get it going
but i see you say it needs the lcd and rotary switch to set the tx pulse and samples from zero.
I was just about to ask if the code has default values but you read my mind

if its possible to have a default code that would be very handy thanks


I used the hex code from post 20
and remembered this

"ALSO NOTE ... you must wire the ZERO button though .... the code expects you to press this once to commence operation after first power up .... if people dont like this I will remove this "feature"

just dabbed an earth on pin 12 (the zero button) but no pulses, guess its set to zero in code


regarding the 10 meg xtal, when did the 4012 code need that ?, I know you changed the 4011 code for the xtal
I have not tried the TX HI and LOW files yet
6666

The latest hex code does not need the zero button press. The satlock button is discontinued ... you need it for the crystal connection. The crystal was added due to TX jitter ... the default TX period is set to 0 after flashing so you wont get any pulses ... I will investigate an update .. you should think about getting an LCD and a rotary or an RS232 interface ..... or you cant change the sample pulse timing.

moodz

[6666]

Thanks for the update
I went back over the other thread and realised I missed this about the 4012 'DOH"

"I have added a 10 Mhz crystal to both the 4011 and the 4012 "

my LCD has arrived but no switches.
10mhz xtal like this ?

[moodz]

Thanks for the update
I went back over the other thread and realised I missed this about the 4012 'DOH"

"I have added a 10 Mhz crystal to both the 4011 and the 4012 "

my LCD has arrived but no switches.
10mhz xtal like this ?

you got it ... the chip is running a little beyond spec at this speed and power consumption is up but you do get nice timing steps of 25 nanoseconds and faster processing.

[moodz]

you got it ... the chip is running a little beyond spec at this speed and power consumption is up but you do get nice timing steps of 25 nanoseconds and faster processing.

Here is the hex file for 2 khz TX default and 50 us tx pulse period.
Unless you have the serial port or LCD you wont be able to adjust the sample pulses tho.
moodz

H20111018.zip

[6666]

cool thanks moodz, will do asap

[6666]

I have programed my chip with H20111018.zip
I got the message program verify
so I assume the chip is ok
knocked up the cct on breadboard (with and without lcd), but at 4.8 volts
it only draws around 8 ma, and no pulses with or without lcd

the breadboard connections all seem firm and ok
not sure what to try next, maybe make a real pcb

[moodz]

I have programed my chip with H20111018.zip
I got the message program verify
so I assume the chip is ok
knocked up the cct on breadboard (with and without lcd), but at 4.8 volts
it only draws around 8 ma, and no pulses with or without lcd

the breadboard connections all seem firm and ok
not sure what to try next, maybe make a real pcb

Please post hi res photo of top and bottom of board and I will see what I can do for you.

moodz

[6666]

Hi Moodz
the breadboard is just the plugin type
so only one side

I will knock up a vero board
that should be all soldered connections
and see what happens
this is such a simple project
it should be working by now

found some info on how to test the LCD
so will do that to , to check if its ok

edit good news the lcd tests ok

I should test the xtal to

Moodz can I just check something with you
what should be on pin 12, (the old zero button)
should it have a 10k R on it or not
seeing the software is not looking for an earth to start it ?

[moodz]

Hi Moodz
the breadboard is just the plugin type
so only one side

I will knock up a vero board
that should be all soldered connections
and see what happens
this is such a simple project
it should be working by now

found some info on how to test the LCD
so will do that to , to check if its ok

edit good news the lcd tests ok

I should test the xtal to

Those CPUs have more than one ground and +5 volt supply pin ... make sure all are connected or it wont work.

tie the pushbutton input pins high to +5 also if just testing.

moodz.

[6666]

I connected pins +4.8v 13,20,28 and Gnd 8,19,27 and R9 pin1 and R1 pin11, r2 pin 12 ,
R4 and 5 to pins 6,7, and the xtal to pins 9,10

it should work,

does it need the full 5v to work ?

i'll knock up a cct to test the xtal

[mickstv]

I connected pins +4.8v 13,20,28 and Gnd 8,19,27 and R9 pin1 and R1 pin11, r2 pin 12 ,
R4 and 5 to pins 6,7, and the xtal to pins 9,10

it should work,

does it need the full 5v to work ?

i'll knock up a cct to test the xtal

Have you got the 22pf ceramic caps installed on the crystal pin9 to gnd and pin10 to gnd.



Mick

[moodz]

I connected pins +4.8v 13,20,28 and Gnd 8,19,27 and R9 pin1 and R1 pin11, r2 pin 12 ,
R4 and 5 to pins 6,7, and the xtal to pins 9,10

it should work,

does it need the full 5v to work ?

i'll knock up a cct to test the xtal

If you are relying on the Pickit to supply the +5 it probably will not work ... the supply from the programmer is not clean enough ... thats what I found anyway.

moodz