seriall data application using PIC16F84A to light up leds | Piclist

A discussion group for the PICMicro microcontroller. Also called the Microchip PIC, this list is dedicated to the use and abuse of this fine, simple, microcontroller. Close to topic posts are welcome, ie. general electronics.

hi... i'm desperately seeking for help...i'm trying to complete this application but i cannot seem to light up the leds...i dunno whether my program is functioning correctly..pls....i desperately need help...the details of my application are given below.... serial data application =========================== pulse--space(on)--pulse--space(on)--pulse---space(on)--pulse _____ _____ _____ _____ | | 1 | | 2 | | 3 | | _____| |___________| |____________| |____________| |_ 0.6ms|0.3ms| 1ms |0.6ms|0.3ms| 1ms |0.6ms|0.3ms| 1ms |0.6ms pulse (space) (space) (space) (1st,2nd,3rd led on) pulse--pulse(off)-pulse--pulse(off)--pulse-space(on)---pulse _____ ____ ____ ____ _____ _____ | | | | | | | | | | | | _____| |___| 1 |___| |___| 2 |____| |______3____| |_ 0.6ms|0.3ms|0.6| 0.3|0.6|0.3 |0.6|0.3 |0.6 | 0.3 | 1ms |0.6 | 0.3 | (1st,2nd off, 3rd on) a pulse is always called signalling the transmission of 16 types of data. when ever an led is to be ON a space(1ms)is called. if the led is to be OFF then another pulse is called after the first pulse and then following that 2nd pulse a third pulse is called to signal the transmission of the next data. these pulses will be inputted to portA, 2 and the corressponding LED is to be connected to RB0-RB7. 2 PICs will be needed for sixteen LEDs using portB to output to the LEDs. i am using PIC16F84A and rc oscillator of 4MHz. please could anyone help me because i am having troubles lighting up my leds. below i have included my program initially used but doesnt output the required results. p/s sw1 and sw2 are registers used to store the data first before outputted to portb of the 2 pics. are there problems with the delay that i have used???? i am open to any suggesttions.........thanx for any help possible

(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )

Sign in

Search piclist

Subscribe to piclist

piclist by Keywords

Sponsor

Ads

Discussion Groups

See Also

Discussion Groups | Piclist | seriall data application using PIC16F84A to light up leds

seriall data application using PIC16F84A to light up leds - rahzdapoj - Jul 20 9:54:00 2003