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thanks for your replies. i didnt realise any had been sent at first because i was expecting an email, so sorry i didnt talk back sooner.
im glad to hear that my idea isnt completely stupid. i know antenna theory is a complex subject and all.
i dont want to reduce the range of the system if at...
hello,
i have recently started to fly radio controled helicopters and have discovered that it can be quite difficult to place the reciever's antenna.
there are a lot of metal parts that can shield the signal from certain angles so i was wondering if it would be possible to use the tail boom...
picstart+
i am hoping that someone will be able to advise me on how to program a pic 18f8720 with a picstart plus, or guide me to a referance on how to achieve it.
so far i have tried to map the required pins of the picstart using an osciloscope to find which outputs are used for clock and...
is it possible to competely remove mono part of a stereo signal whilst leaving the sound that is unique to each channel intact and still in the correct channel?
i mean one of the common ways that something like this is done is by mixing
-1(left channel ) + (right channel) = (right channel...
if it is branching to the wrong vector,
check:
IPR1 <5>
this bit tells the interupt hardware whether to treat a USART interupt as a high or low priority interupt and decides which origin the program branches to.
high priority interupts using the "retfie FAST" automatically save and restore...
ok, im just going to throw this idea out into the open. i dont know if it is possible though...
pass an ac current through the structure (200 Hz or something). the current needs to be large ie several amps.
current in a conductor generates a magnetic field which can be measured with sensor...
check the highlighted line
intclean
movf savestatus,w ; get the stored status information
movwf status ;restore status! (bank=original)
swapf savew,f ;restore w from *original* bank
swapf savew,w ;swapf does not affect any flags
make sure that you have the org 0x0018 statement
you...
dont you need to turn on the oscilator before you switch? and what about polling the oscon frequency stable bit [OSCCON<2>&<3>] ?
i know it says it waits for a few clock cycles as it switches but can you safely just change OSCCON to 0x02 and back to 0x00 without it causing glitches?
hi, is anyone able to talk me through the steps required to change the clock source from an external 10 MHz crystal with PLL (ie 40 MHZ clock) down to the 31 KHz internal clock?
it looked simple until i found out that i had to start up oscilators before i could switch sources, now im a bit...
movf RCREG,w ; save received data in W
movlw 08H ; move it from register 1 to w.
movwf LATB ; move it to PORTB to light up the LED
does this:
movf RCREG,w ; move the data from the recieve register to W
>>>movlw 08H <<< ; overwrite the data in W with literal value of 08H...
i2c connect 2 pic
hello,
i was trying to do something that sounds very similar to what you are trying to do not so long ago.
in the end i decided not to use I2C because it is probably the most complex communication method on the chip.
if you are able to i would suggest using USART or EUSART...
ive finally figured it out!!!!
i needed to add the line
global theend
into the first file. it seems to work happily then :D
you were right that i hadnt defined it in the second file, but i wanted it to go to a place in the first file. telling the assembler this bit of info seems to...
i have found the include directive, but its doing something annoying
let me explain with an example
;
main code ;relocateable code section
Main:
goto testsubroutine ;this is in another .asm file
;*******************************************************************
theend
goto $...
one of my recent has reached about 3000 lines including comments and it is a right sod to try to keep track of where everything is when its in one huge list.
is it possible to put different subsections/subroutines into different files whilst still being able to assemble and simulate it?
how...
is it possible to send 0x000 via usart?
im using the 9 bit mode on the 16f877, but with all bits set to 0 the module seems to consider the buffer empty and doesnt send any data.
is it possible to trigger the module by using another command like a swapf or add?
thanks
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