Search found 10 matches

I want to communicating with two PIC 16F873A with RS485. Master containing keys & Slave Contain Zero detect & Phase Control. I have written program from Master as if key1 press it send data if ...

Ttelmah or any can guide to send single byte on RS485 i had gone through example but i am not clear. please guide for master to send data & how to recieve over RS485. i am very confusing. please g ...

I am having problem in RS485 communication I have written my code with the help of example but i have problem. My hardware is ok having PIC 16F873A, 6 Keys & Max 485 IC .
my code as

#include ...

I am having problem in RS485 communication I have written my code with the help of example but i have problem. My hardware is ok having PIC 16F873A, 6 Keys & Max 485 IC .
my code as

#include ...

ya now i modify my code and after zero detect interrupt occur start timer0 for delay for phase angle and give pulse (High) to MOC3021 and after 7ms from zero detect again pulse going to LOW to MOC3021 ...

Dear PCM Programmer I have change interrupt PORTB Change as given by your code
#int_RB
void RB_isr(void) // Zero Cross Detect _ to Pin RB5
{
#byte PortB = getenv&# ...

i am attaching my circuit so it will clear
[img] https://mail-attachment.googleusercontent.com/attachment/?ui=2&ik=f325818cf4&view=att&th=13f346d47201d51c&attid=0.1&disp=inline&am ...

I am using 16F873A Controller for Phase Control & Zero Detect. Using Optocoupler EL817D, I have read Zero detect and output Pulse given to MOC3023 which connect between TRIAC Gate & Microcontr ...

Thanks Ttelmah, its my mistake i will try.
Nothing wrong with the input. Problem is the data definitions....
You are defining key2_data, as a _function_ returning an int8, not as a variable.
Same ...

I am using PIC 16F873A controller 8 keys attached to controller. On PORT_A (6 keys) from Pin A0-A5, and ON Port B (2 keys) Pin B4, & B5. I am writing Port_A make with pullup make Port_A High and r ...