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  Topic: Convert Hexadecimal to Decimal
John Ilicitean

Replies: 2
Views: 11096

PostForum: General CCS C Discussion   Posted: Thu Mar 09, 2006 11:15 am   Subject: Convert Hexadecimal to Decimal
Thank's!! Now, I see in display a decimal number.

But I want to manipulate this data. I'm doing a digital thermometer using a PTR.
I simulate the PTR with a potentiometer. When I change of value ...
  Topic: Convert Hexadecimal to Decimal
John Ilicitean

Replies: 2
Views: 11096

PostForum: General CCS C Discussion   Posted: Thu Mar 09, 2006 6:25 am   Subject: Convert Hexadecimal to Decimal
Hello!!!
I 'm connect a AD7788 of 16 bits to PIC16F877. The AD7788 send the output register with the data of conversion. I keep the data with a variable "long" call result.

result=make32(spi_r ...
  Topic: SPI comunication problem
John Ilicitean

Replies: 6
Views: 11859

PostForum: General CCS C Discussion   Posted: Fri Feb 24, 2006 6:13 am   Subject: SPI comunication problem
Hello!!!
Ttelmah thank's for to help me Wink .I proved your code. In the SCLK line I see the pulses of CLK ,four trains of pulses of 8 bits,like in the figure 16.
In the first train of pulses I se ...
  Topic: SPI comunication problem
John Ilicitean

Replies: 6
Views: 11859

PostForum: General CCS C Discussion   Posted: Wed Feb 22, 2006 9:51 am   Subject: SPI comunication problem
I went to buy the converter that you said to me, and they said that I send
to me in a month.I cannot wait for as much time. For this reason I buy the AD7789.

Single I need aid, like everybody.
  Topic: SPI comunication problem
John Ilicitean

Replies: 6
Views: 11859

PostForum: General CCS C Discussion   Posted: Wed Feb 22, 2006 6:08 am   Subject: SPI comunication problem
Hi!!
The AD is the AD7789. In the datasheet show in the "Continuous Read Mode" if I send the "0x3c" for DIN , in DOUT is put the data register.

I have a digital storage oscilloscope to be able ...
  Topic: SPI comunication problem
John Ilicitean

Replies: 6
Views: 11859

PostForum: General CCS C Discussion   Posted: Wed Feb 22, 2006 4:42 am   Subject: SPI comunication problem
Hello to EveryONE!

I connect a PIC16f877 to AD with the bus SPI. This is my first code of SPI. For the line DOUT I want to send the data "3c". The AD have a CS active a "0".
I connect: the DIN of ...
  Topic: Show the temperature in LCD 16X2
John Ilicitean

Replies: 0
Views: 3564

PostForum: General CCS C Discussion   Posted: Thu Feb 16, 2006 4:26 am   Subject: Show the temperature in LCD 16X2
Hi!!!!!!!

I am designing a digital thermometer with a PIC16F877.The circuit of measurement ,measures the difference of voltage between the LDR. This difference of voltage I send to conversor AD and ...
  Topic: Looking for a new AD!!!!!!!!
John Ilicitean

Replies: 5
Views: 9623

PostForum: General CCS C Discussion   Posted: Tue Feb 14, 2006 12:25 pm   Subject: Looking for a new AD!!!!!!!!
Thank's for help me!!!
Very Happy Very Happy Very Happy
  Topic: Looking for a new AD!!!!!!!!
John Ilicitean

Replies: 5
Views: 9623

PostForum: General CCS C Discussion   Posted: Mon Feb 06, 2006 2:13 pm   Subject: Looking for a new AD!!!!!!!!
You are right!!
I have seen the characteristics of LTC2420 and it seems to me a good AD!!
I use a PIC16F877, my question is , I need a driver for to comunicate the PIC with LTC2420???
  Topic: Looking for a new AD!!!!!!!!
John Ilicitean

Replies: 5
Views: 9623

PostForum: General CCS C Discussion   Posted: Mon Feb 06, 2006 10:05 am   Subject: Looking for a new AD!!!!!!!!
Hello!!!

After my failure to work a PIC with a conversor ADS1100. I look for a conversor A/D of 13 bits or more, with a bus SPI or I2C.

If somebody has worked with a PIC and a conversor of this ...
  Topic: ACK or not ACK??this is the question.
John Ilicitean

Replies: 15
Views: 23788

PostForum: General CCS C Discussion   Posted: Thu Feb 02, 2006 10:41 am   Subject: ACK or not ACK??this is the question.
Hi everyone!!!

rwyoung wrote:

And your PIC code timing EXACTLY matches that of the PC program's?


The timings of the PC program's is more slow.For example :
Tstart=120usg ------------------ ...
  Topic: ACK or not ACK??this is the question.
John Ilicitean

Replies: 15
Views: 23788

PostForum: General CCS C Discussion   Posted: Thu Feb 02, 2006 6:07 am   Subject: ACK or not ACK??this is the question.
Hello!!!

I tested the power pins. The Pin 5 Vdd=5.1V and the Pin 2 GND=0.00V.

I'm sure what the pins of SDA and SCL are corretly connected.

I have three ADS1100 , two AD2 and one AD0 (the AD ...
  Topic: ACK or not ACK??this is the question.
John Ilicitean

Replies: 15
Views: 23788

PostForum: General CCS C Discussion   Posted: Wed Feb 01, 2006 11:46 am   Subject: ACK or not ACK??this is the question.
Hi!!!
First, thank you very much!!! Wink

I have programmed your code and the Pin_A1 has been put '1'.

1) You have both an AD0 and AD2 chip. Did you perform this last test with the AD2 chip? ...
  Topic: ACK or not ACK??this is the question.
John Ilicitean

Replies: 15
Views: 23788

PostForum: General CCS C Discussion   Posted: Wed Feb 01, 2006 5:29 am   Subject: ACK or not ACK??this is the question.
Hi!!!

I programed the PIC with this code:


#include <16F877.h>
#use delay(clock=20000000)
#fuses HS,NOWDT,NOPROTECT,NOLVP,NOCPD,NOWRT
#use i2c(Master,fast,sda=PIN_C4,scl ...
  Topic: ACK or not ACK??this is the question.
John Ilicitean

Replies: 15
Views: 23788

PostForum: General CCS C Discussion   Posted: Tue Jan 31, 2006 10:39 am   Subject: ACK or not ACK??this is the question.

I have proven the sequences to READ and WRITE,so and as they indicate the manual to me

First, I followed the datasheet, and don't work the ADS1100.

After, I proved another one secuence, as si ...
 
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