djsundog/circuitpython
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110 Commits

Author SHA1 Message Date
Sean Cross
6885ffc9af litex: mphalport: add fake mp_hal_delay_us 
Add a mp_hal_delay_us, which is required by some of the modules,
that simply calls mp_hal_delay_ms / 1000.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-04-16 09:26:08 +08:00
Scott Shawcroft
b580b34cbf
Merge remote-tracking branch 'adafruit/master' into lower_power 2020-04-14 17:14:44 -07:00
Scott Shawcroft
d0a25ca9ac
Tweaks based on dhalberts feedback 2020-04-08 10:49:46 -07:00
Sean Cross
9845a064ad ports: fomu: move more functions into ram for stability 
The SPI flash on current Fomu firmware is slow.  Circuitpython runs
XIP from SPI flash, and so execution time can also be slow.  Ordinarily
this isn't a problem, however certain operations are time-sensitive.

In particular, USB function needs to be handled quickly in order to
prevent the host from re-enumerating the device.

Place several critical TinyUSB structures into RAM, as well as several
hot functions that are frequently called.  This reduces execution time
at the expense of system memory, and greatly improves system stability.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-04-02 11:21:22 +08:00
Scott Shawcroft
77562a2acd
Update the supported ports 2020-03-31 18:27:55 -07:00
Scott Shawcroft
75b7f583d2
Update LiteX APIs for new tick 2020-03-31 17:52:23 -07:00
Sean Cross
c69f7f8657 ports: litex: use dfu.py instead of dfu-suffix.py 
dfu.py now generates proper dfu suffixes without the nonstandard prefix.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-03-31 13:04:59 +08:00
Sean Cross
34ea140783 ports: fomu: build dfu as part of Makefile 
Now that we have a replacement for `dfu-suffix`, construct a dfu
image rather than a UF2 image.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-03-31 11:42:55 +08:00
Sean Cross
065441e58c ports: litex: enable itcm region for fomu 
This adds a new command line flag -DFOMU to indicate we're building
for a Fomu board.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-03-31 09:40:38 +08:00
Sean Cross
786e79ebc9 ports: litex: add port and fomu board 
This adds support for Litex, along with support for the Fomu FPGA board.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-03-31 09:40:38 +08:00