J
[email protected]
- Jan 1, 1970
- 0
OK, you do have a scope on hand.
This is too busy to trouble shoot hardware with.
Try this:
while( TRUE)
{
output_low(PIN_B4);
delay_ms(1);
output_high(PIN_B4);
printf("A"); // replace this line with a serial_char_out('A');
delay_ms(1);
}
On your two channel scope, put one channel on PIN_B4 and the other
channel on the serial out pin.
Sync your scope on the raising edge of PIN-B4.
It should look something like:
B4 +---------------------------------------------------+
______| |____________
------+start+-01--+ 02 04 08 10 20 +-40--+ 80 +stop-.---
Sout |_____| |_____._____._____._____._____| |____|
Here is the scope output:
http://www.bitzphoto.com/ECE445/scope.png
PS: I haven't looked at the old messages, but it this hardware your own
design and construction ??
If you are referring to the USB to serial, no it is a sparkfun part:
http://www.sparkfun.com/commerce/product_info.php?products_id=198
The overall circuit for our intended project is our design; however
right now it has been stripped down to PIC-MAX-CONVERTER-PC blocks
until we find out our problem. It is right now just a breadboard
implementation.