embedded - PIC16F887 PORT won't work with XC8 C compiler -

-

i'm pretty new pic programming , i'm trying use c (compiled microchip's xc8 free in mplabx) make simple "input output" program.
problem i'm having ra2, ra3 , ra5 input pins not working when programming in c.
it's not hardware problem, because when programming in ladder pins work fine.
i've searched around on internet while , couldn't find same problem yet.

the program i'm trying burn onto pic follows: 

#define _xtal_freq 20000000  #include <xc.h>  // begin config #pragma config fosc = hs // oscillator selection bits (hs oscillator) #pragma config wdte = on // watchdog timer enable bit (wdt enabled) #pragma config pwrte = off // power-up timer enable bit (pwrt disabled) #pragma config boren = on // brown-out reset enable bit (bor enabled) #pragma config lvp = off // low-voltage (single-supply) in-circuit serial programming enable bit (rb3 digital i/o, hv on mclr must used programming) #pragma config cpd = off // data eeprom memory code protection bit (data eeprom code protection off) #pragma config wrt = off // flash program memory write enable bits (write protection off; program memory may written eecon control) #pragma config cp = off // flash program memory code protection bit (code protection off) //end config  int main() {   trisb = 0x00;   trise = 0x00;   trisc = 0x00;   trisd = 0xff;   trisa = \           _trisa_trisa2_mask |\           _trisa_trisa3_mask |\           _trisa_trisa4_mask |\           _trisa_trisa5_mask;   portd = 0x00;   porta = 0x00;   portb = 0x00;   porte = 0x00;   portc = 0x00;    while(1){     portb = porta;   }   return 0; }

i output on portb if set ra4 high, not ra2, ra3 nor ra5. believe might problem configuration bits or something, i'm not sure.

hardware being used:

  • microchip pic16f887

  • flexis plus board (sorry no english manual, in page 8 , 9 there board schematics)

software being used:

i think problem specific pins analog inputs adc module, have configure them digital i/o use them. try setting ansel = 0x00 @ beginning of program.

you can see in datasheet default value of ansel on por 0xff analog pins configured analog inputs default.


Comments

Post a Comment

Popular posts from this blog

python - No exponential form of the z-axis in matplotlib-3D-plots -

-
Image
i have similar problem described in how prevent numbers being changed exponential form in python matplotlib figure : i don't want (in special case) weird scientific formatting of axis. problem different have problem @ z -axis. 2-d plots can use ax.get_yaxis().get_major_formatter().set_useoffset(false) . , there no function ax.get_zaxis() what use format z -axis same way? edit: example: from mpl_toolkits.mplot3d import axes3d import numpy np import sys import matplotlib import matplotlib.pyplot pyplot def func(xi, ti): res = 10e3 + np.cos(ti) * np.sin(xi) return res if __name__ == '__main__': timespacing = 20 timestart = 0 timeend = 1 time = np.linspace(timestart, timeend, timespacing) widthspacing = 50 widthstart = 0 widthend = 3 width = np.linspace(widthstart, widthend, widthspacing) reslist = [] matplotlib.rcparams['legend.fontsize'] = 10 fig = pyplot.figure() ax = fig.gca(projection = '3d...
Read more

php - Best Light server (Linux + Web server + Database) for Raspberry Pi -

-
i install web server database on raspberry pi (little computer). computer has 1gb ram. i want know best combination: linux distribution , web server , dbms run local server multiple users minimal latency, use php on server. , best settings performance , not have bugs (memory usage, disable plugin, disable service, etc)? i thought light debian , lighttpd server , sqlite database. solution? i think lighttpd + sqlite great choice. linux distro, debian @ centos or tiny core linux , although i'm not sure of compatibility pi. obviously, can't go wrong raspbian if want use in production , more stable performance, few more pi's , set them in cluster .
Read more

c# - "Newtonsoft.Json.JsonSerializationException unable to find constructor to use for types" error when deserializing class -

-
i developing app in xamarin android. have splash screen serialize class , pass mainactivity using intent . when try deserialize in mainactivity error message : "serializationexception unable find constructor use types" serialization : void loaddata() { currency currency = new currency(this); intent = new intent(this, typeof(mainactivity)); intent.putextra("currency", newtonsoft.json.jsonconvert.serializeobject(currency)); startactivity(intent); } deserialization : cur = newtonsoft.json.jsonconvert.deserializeobject<currency> (intent.getstringextra("currency")); // error here class constructor : public currency(context context) { thiscontext = context; } i began experiencing problem after added parameter context context constructor. has caused this? how can solve it? possible serialize/deserialize class has parameters? you need have empty constructor in currency class in order deserialize it. ...
Read more