Search found 14 matches

Hi,

I'm usign a PIC18F4550 at full-speed USB. I compiled the bulk transfer example with a little changes in order to measure the speed rates and it is about 88kpbs. (330000 bytes in 30 seconds).
...

Hi,

I have a problem using int32 arrays. I want to load an array each time #int_ext is executed. Then, I print it pressing RB7.

If I use a variable as index as in program below it doesn't work. ...

Hi,

I want to use two external counters through timer0 and timer1.
I have a PIC18F452 with RA4 and RC0 pull-down through 10k resistors to GND. I want to count every rising edge of the external clo ...

Sorry, the input signal is a 5v pulse and it occurs when somebody cut the beam of each sensor. I'll have 12 sensors and its could interrupt each 10ms aprox. I need to detect each interrupt of each sen ...

Yes, I say "real time" because this events can occurs simultaneously, so I think it would be a hardware solution instead of some kind of software loop checking input ports.

About 74HCXX's chips, I ...

Hi,

I need to check the status of between 12 or 16 events of infrared barriers sensors. This must be in real time and all of them can appear at the some time.
Then, I'll fire an alarm if the amou ...

Hi,

I have made a sine wave from a PIC16F628 and a DAC0808. My problem is that it is (0-5V) range sine wave and I need an AC sine wave (-2.5v, +2.5v).

Im trying to test the inductive properties ...

Hi,

I am trying to make a chronometer. I am using timer1 each a millisecond, but he is not very exact.

#define COUNTER1 60585

setup_counters(RTCC_INTERNAL,RTCC_DIV_1);
set_rtcc( ...

Hi,

I think I have a conversion problem. I just want to fill a int32 array named "test" with external eeprom data. When it dont get me the correct values I tried with a flat variable "tmp" and it ...

Hi,

My program has a "not enough RAM for all variables". But just when I put a comment "//" in char k definition (1st of main) instead of when I get out this comment. I guest when i put a comment ...

thank you again.

Im trying to improve the GlcdText57 function from graphics.c driver.
It receive a char pointer with the string to print, then it print each byte.
But, you must to declare the bu ...

Thank you. i'll try as you say. But, I ask me how will the compiler do to compile printf("Hello world").

thanks anyway.

Hi,

I want to create a function like this.

void PrintStr( char *StringData )
{
}

When I perform this function: PrintStr("Hello World"), the compiler say:

Attempt to create a pointer to ...

Hello,

I'm using 24256.c driver to read a previously saved content on IC eeprom. I use the read_ext_eeprom function but sometimes it read ok and sometimes it read dirty characters.
I'm readling 2 ...