Hi

Maybe you might want to look at this thread.

http://forums.hardwarezone.com.sg/showthread.php?p=49091874

Hi Mike

I'm having some trouble with a bit of PIC assembly code running on a PIC16F722.  I am trying to use the Timer0 interrupt and the SSP module, in SPI mode.  The SSP module is communicating with an MCP23S17.

The affected sections of the code are

          movlw     0x87                                 ;Put 0x87 in the working register

          movwf     OPTION_REG                   ;Copy the working register to the options register, Port B pull-ups disabled, Timer0 pre-scaler set to 256

and

SPI_Byte_Out:

          bcf          INTCON, GIE                    ;Disable all interrupts while transmitting
          movwf      SSPBUF                         ;Copy the working register to SSPBUF
          bsf          STATUS, RP0                  ;Access memory bank 1
          btfss       SSPSTAT, BF                  ;Check buffer full bit for end of transmission
          goto        $-1                                  ;Go to previous instruction until transmission is complete
          bcf          STATUS, RP0                  ;Access memory bank 0

          bsf          INTCON, GIE                   ;Re-enable all interrupts after transmission

          return

When the first part of the code shown is commented out, or if the GIE bit is cleared, the SSP module functions reliably.  However when this part of the code is included, the SSP module doesn't function properly, with nothing output on the SO pin and the code hanging at the Buffer Full bit test.

Have your encountered this before, or can you see what I'm doing wrong?

Hi Mohasin,

Do you use the latest Microchip Application Libraries containing the TCP/IP v5.25 or > ?

It is essential to use the latest ones with your WiFi module as it contains updated firmware.

After installing the libraries, you'll find several WiFi projects in the C:\Microchip Solutions v2010-08-04\ directory.

There are some online webseminars on the TCPIP stack which you may want to listen to in order to understand how to interface your application with the TCP/IP stack.

Another option is to attend the Microchip training dedicated to TCP/IP (webserver) ref COM4201 in one of the Microchip Regional Training Centers

regards

hi

i need to know the difference between  DM240001DM240001DM240002.DM240002.

Does the DM240002.DM240002. support dspic as PIM or it  just for PIM PIC

if it does not support how i can use dspic with DM240002.DM240002.

See my reply to your original post.

thanks

Hi according to the Microchip website the  DM240001DM240001 caters for the 100pin PIMs be it PIC24 or dspic etc and the DM240002.DM240002. caters for the lower pin count 44 Pin PIMS as below:

"The Explorer 16 Development Board is a low-cost modular development system for Microchips 16-bit microcontrollers It comes in two versions  DM240001DM240001 ships with the 100-pin PIMs and DM240002.DM240002. ships with the lower pin-count 44-pin PIMs"

I hope this helps

Carl

My notebook gone due to the break in, are there any application for tracking notebook or tv use microchip, lucky, they are not interesting my develop kit.

Hi Mike:

This code works good in simulation but in the real situation not works,the GP0 and GP1 is 0 V,Can you help me?. The compiler is CCS.

thanks

#include <12f629.h>
#fuses HS,NOWDT,NOPROTECT,NOPUT                                   
#use fast_io(a)
#use delay(clock=20000000)
void main()
{
set_tris_a(0b111100);
output_a(0x00);
while(1){
output_high(PIN_A0);
output_low(PIN_A1);
delay_us(200);
output_low(PIN_A0);
output_low(PIN_A1);
delay_us(300);
output_low(PIN_A0);
output_high(PIN_A1);
delay_us(200);
output_low(PIN_A0);
output_low(PIN_A1);
delay_us(300);
}
}

hi i want to buy the explorer 16 development board ...is it Necessary  to buy pickit2  which is part #DV164121

im interested to control the whole board with pic18LF4550 (using USB )