Search found 15 matches

I am trying to make PIN_A4 of a PIC18F252 toggle from low to high but it will not work. I try the same code on PIN_A3 and it works perfectly. What am I doing wrong???

#include <18f252.h> ...

Question: Whether I am communicating in RS232, RS485, or I2C between a master and a slave both of which have a buffer to store data, how can I ensure that the data from buffer[0] of the slave ends up ...

Ok. Thanks. Smile

-Alex

Hi Ben,

Thanks for the quick reply. In my app, data is being processed by an external A/D Converter then saved on the PIC. That part is easy enough. I then need to send the data from one PIC t ...

bkamen: I'm also looking into sending & receiving 16-bit data via RS-232. Do you have a sample I may use as a foundation to my code. It would save me a lot of time. I would appreciate any help. ...

I would like to send and receive 16 bits of data from one PIC to another but I'm not sure how to go about doing this. I was thinking of using fputc from rs232 but I only see in the options the abilit ...

I see from the driver the following line which I think sets the 9th bit.

fputc((int16)0x100|rs485_id, RS485_CD);

I'm not entirely sure how that works, nor do I see how the re ...

Hi,

I am communicating between two PIC18f252 uControllers. They are connected together with two max485 chips. I can send and receive data without problems. Right now the slave is simply oscillati ...

Hi,

You are having a similar problem to what I am having. I was unable to get the rs485_get_message to work properly, but I was able to receive the data I was transmitting using this:

#includ ...

Hello,

I am using the rs485.c library to send data. I have two PIC18f252 and two MAX485 chips. I can send data but additional data is being sent. For example if I send the character 'A', the cha ...

I think i have isolated the problem.

From the RS485.c file I am calling two routines: rs485_init() and rs485_get_message(). When simulating my code I have discovered that it is getting stuck at th ...

while(true)
{
if(rs485_get_message(msg, FALSE))
printf(lcd_putc, "%d ", msg[1]);
}

When I try th ...

PCM Programmer,

Thank you for responding. I tried your suggestions but that still does not solve the problem. I don't understand if my problem is with the way i'm transmitting, the way the HW is ...

I added the "enable = pin_c5" PCM programmer suggested but still I have problems. I will provide my transmitter source code, the reciever source code and the schematics to show the entire p ...

Hi,

I am trying to set up a simple communication between two PIC18f252 using two MAX487. I was able to transmit data but I am unable to receive it using the RS485_get_message function from the RS ...