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hi all.
if any body having the sample code for modbus communication with msp430 controllers? or any one please guide me regarding how to do the modbus communication with msp430controllers??
hi all.
i tried to interface my controller with PC by means of MOBDUS communication.. for that i googled and got the demo code from net .now the problem is my demo code containing some header files so i include the header file by...
now i found that mistakes if i tie my analog reference gnd that is VREF/Ve REF- pin number 11 in msp430f2618 TO gnd am getting voltage reduction on my port.. but as per data sheet in order to use external analog reference for ADC operation i need to tie that pin to gnd.. so what is the problem...
initially i got this problem in the pin which is connected to the external DAC.. so i thought to check the unconnected pin
i.e here i connected port 4 and port 5 to the external DAC and port 1 is un connected to any where..
i am getting the same problem in all the port pin
ya it would work if i give directly like lsignal2 = -2*1410/500+1024; .. but here i will get the lsig value during my run time based on the previous calculations. so it may vary from -4,-6,0,2,4,5 etc.. like that . so here am getting error on my calculation if the lsig value assigned for...
if i test the same ic by de-soldering the and placed in my ic socket means the port pins are working properly.. so now i found that the problem is in my pcb.. can you say what kind of the possibilities to reduce the port pin voltage ?? so it would help me to trouble shout my pcb??
hi all am using msp430f2618 controller .. in my coding some arithmetic calculations is there that is
lSignal2 = lSig*1410/wSa1+1024;
in this code lsig = -2;
wSa1 =500;
as per the manual calculation the answer should be lSignal2 = 1018 but am getting lSignal2 =-183787...
ya am only making the logic to high . but the problem is the as per data sheet the high level output voltage should be (vcc-0.2)v .vcc=3.25v. so the minimum output should be 3v but am getting only 2.6v
hi am using msp430f2618 controller i made my own pcb now the problem is if am setting my P1.5 as a output port means am getting only 2.68v on that pin since my vcc is3.22v only.and i did t connect any pull up resistor on that pin...?? and am getting the same problem for other port pins also...
ok dora. i agree with your reply.. but after finishing the total project code with the help of compiler is there any thing possible to know my code size and memory utilization of my code ..(am a beginner that's why asking this kind of questions)
[/COLOR]thanks lot dora.. its working properly and not taking too much time as like array... one more thing now am selecting the micro controller having 8k internal RAM..whether its enoughy for my 1024 samples ??how can i verify this?? and how can we check it in compiler how much memory...
hi ..
I tried the coding by means of array its working properly but the problem is if my array size is 1000 value means after reading the one value from FIFO i need to swap the array location .. so for this it s taking large time.. so i thought to use external fifo...
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