Best way to use USART/HSERIN

[Demon]

Check the Lab X1 schematic, I'm pretty sure there was a jumper for this. It handled all the LEDs at once.

[RossWaddell]

Check the Lab X1 schematic, I'm pretty sure there was a jumper for this. It handled all the LEDs at once.

Is this what you're referring to Robert?

LED Bargraph

8 programmable LEDs connected to PORTD and 2 power LEDs are provided by
the LED bargraph. Resistor pack RP4 provides the current limit series
resistors for the LEDs. The LED bargraph may be inserted in the socket so
that the LEDs are lit when the PICmicro MCU pin is in either its high or low
state.

To make the LEDs light up when a PICmicro MCU pin is high, insert the LED
bargraph into the socket with pin 1 toward the edge of the board (this will
also line it up with pin 1 on the socket and is the default placement).
Jumper JP2 must have pins 2 and 3 connected (jumper on the top 2 JP2 pins).
When the LAB-X1 is powered up, the leftmost LED will light up to show that
power is on. To make an LED light up, set the appropriate PORTD pin to
output high.

To make the LEDs light up when a PICmicro MCU pin is low, insert the LED
bargraph into the socket with pin 1 toward the center of the board. Jumper
JP2 must have pins 1 and 2 connected (jumper on the bottom 2 JP2 pins). When
the LAB-X1 is powered up, the second to the leftmost LED will light up to
show that power is on. To make an LED light up, set the appropriate PORTD
pin to output low.

The LED bargraph shares PORTD with the LCD module data lines. If the
program is not using the LCD module, it can effectively be ignored. If the
LCD module is also being used, it may leave the LEDs in a different state
than it found them in. If the LCD is operating on a 4-bit data bus, only the
top 4 LEDs, 4 - 8, will be affected. If the LCD is using an 8-bit data bus,
all 8 LEDs will be affected. The proper LED state will need to be reset
after each LCD access.

See BLINKX.BAS for a programming example.

I'll check the jumpers tonight, but it seems like it's an all-or-nothing thing - on my board, the leftmost LED lights up when powered on and the ERROR LED from my code does blink, but a few of the other ones are always on.

[Demon]

Yup, JP2, that's the one.

[RossWaddell]

Looking at the board with the power jack on the left and the 16F8777A on the bottom, the JP2 jumper has the top two pins tied together. The LED bargraph has the writing towards me. That would seem to be the pick-pin-HIGH-LED-On scenario described above, so I don't get why the LEDs which aren't referenced are on. <Sigh>

[Demon]

Dumb question, did you assign initial values to the pins, ADC, CONFIGs, etc?

[RossWaddell]

Not a dumb question, Robert - I did not. Think I should add 'PORTD =0'?

[Demon]

I'd use the variables.

Why the renaming?

led1 var PORTD.1
led2 var PORTD.2
led7 var PORTD.7

ERROR_LED VAR led7 ' rename the LED's
LATE_LED VAR led2t
HEART_LED VAR led0

[RossWaddell]

Problem solved:

':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
'   Variable definition
':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

ERROR_LED  VAR PORTD.1            ' rename the LED's
LATE_LED   VAR PORTD.2
HEART_LED  VAR PORTD.0

PORTD = 0