diff options
Diffstat (limited to 'hw1/README')
| -rw-r--r-- | hw1/README | 21 |
1 files changed, 14 insertions, 7 deletions
@@ -7,10 +7,17 @@ cheap FX2based logic analysers, allowing automatic tests to be written that use sigrok to check that the signals on the wire match expectations. -TODO: -Check i2c conns to target board! (drop the unused one!) -VCC routing (and recommended mic5504 routing) -ground pours in kicad -reshuffle LA conn -gerber generation? - +Notes on assembly hw1-a: +* 16Mhz crystal, 15pf load caps, and 3k7 i2c pullups + (why don't I have 4k7 0603 resistors lying around? who knows!) +* A power LED wouldn't hurt. +* Adding a red/green user led wouldn't hurt for test pass/fail, even though + it's meant to be autotest +* maybe a fet to turn on/off the i2c pull ups programatically? + (maybe just a single jumper? is there really any need for individual control + of the pullups?) +* move stlink connector 90° or just down and tuck it in, so we can pull the + edge in. It overlaps the buttons on the nucleos, and requires longer + pins than necessary otherwise. +* Add some ground pads for test points, just in general. Test points good, + more test points better. |