SX48 protoboard programming problem
David B
Posts: 592
I'm having programming problems with a new SX48 prototype board.
Last week I ordered and received two SX48 protoboards. I wired up a few connectors to one board, but when I tried to program
it, it displayed the Windows progress message boxes showing "Erasing...", then "Programming...", then an error message
"SxKey Error Programming Failed".
So I tried to program the second unpopulated protoboard, and it programmed fine. I wired up connectors to the second board
just like the first, and the second board programs and runs fine, but the first repeatedly produces "SxKey Error Programming
Failed". I don't have my project program fully developed yet, but the good board is able to send messages out to a serial
LCD display, so it probably is programming and running perfectly.
I tried both an SX-Key and a SX-Blitz programmer; both give the same results. The voltage on both boards seems healthy, and
nothing seems to be getting hot, so I don't think I accidently shorted the bad board. My connections are only to the IO pins; I didn't touch anything else like MCLR or RTCC. I used a magnifier to see if anything looked loose or shorted around the SX48 chip, and the other mounted parts, but didn't see anything out of order.
I think that a device read of the bad protoboard is succeeding, although I'm not sure I understand what it's reading, and if
it is of any use in debugging the problem.
Does anyone have any ideas?
David
·
Last week I ordered and received two SX48 protoboards. I wired up a few connectors to one board, but when I tried to program
it, it displayed the Windows progress message boxes showing "Erasing...", then "Programming...", then an error message
"SxKey Error Programming Failed".
So I tried to program the second unpopulated protoboard, and it programmed fine. I wired up connectors to the second board
just like the first, and the second board programs and runs fine, but the first repeatedly produces "SxKey Error Programming
Failed". I don't have my project program fully developed yet, but the good board is able to send messages out to a serial
LCD display, so it probably is programming and running perfectly.
I tried both an SX-Key and a SX-Blitz programmer; both give the same results. The voltage on both boards seems healthy, and
nothing seems to be getting hot, so I don't think I accidently shorted the bad board. My connections are only to the IO pins; I didn't touch anything else like MCLR or RTCC. I used a magnifier to see if anything looked loose or shorted around the SX48 chip, and the other mounted parts, but didn't see anything out of order.
I think that a device read of the bad protoboard is succeeding, although I'm not sure I understand what it's reading, and if
it is of any use in debugging the problem.
Does anyone have any ideas?
David
·
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Chris Savage
Parallax Tech Support