Commit Graph

5 Commits

Author SHA1 Message Date
Scott Shawcroft 5bb8a7a7c6
Improve iMX RT performance
* Enable dcache for OCRAM where the VM heap lives.
* Add CIRCUITPY_SWO_TRACE for pushing program counters out over the
  SWO pin via the ITM module in the CPU. Exempt some functions from
  instrumentation to reduce traffic and allow inlining.
* Place more functions in ITCM to handle errors using code in RAM-only
  and speed up CP.
* Use SET and CLEAR registers for digitalio. The SDK does read, mask
  and write.
* Switch to 2MiB reserved for CircuitPython code. Up from 1MiB.
* Run USB interrupts during flash erase and write.
* Allow storage writes from CP if the USB drive is disabled.
* Get perf bench tests running on CircuitPython and increase timeouts
  so it works when instrumentation is active.
2023-03-14 12:30:58 -07:00
Jeff Epler 01a1cdf13a update flash chip comment 2021-03-19 09:50:26 -05:00
microDev a52eb88031
run code formatting script 2021-03-15 19:27:36 +05:30
Scott Shawcroft 40118bcf57
Add `board_deinit` for use with sleep
This changes lots of files to unify `board.h` across ports. It adds
`board_deinit` when CIRCUITPY_ALARM is set. `main.c` uses it to
deinit the board before deep sleeping (even when pretending.)

Deep sleep is now a two step process for the port. First, the
port should prepare to deep sleep based on the given alarms. It
should set alarms for both deep and pretend sleep. In particular,
the pretend versions should be set immediately so that we don't
miss an alarm as we shutdown. These alarms should also wake from
`port_idle_until_interrupt` which is used when pretending to deep
sleep.

Second, when real deep sleeping, `alarm_enter_deep_sleep` is called.
The port should set any alarms it didn't during prepare based on
data it saved internally during prepare.

ESP32-S2 sleep is a bit reorganized to locate more logic with
TimeAlarm. This will help it scale to more alarm types.

Fixes #3786
2020-12-08 10:52:25 -08:00
Scott Shawcroft 09bc415751
Unify iMX flash config and add Metro M7 1011
This unifies the flash config to the settings used by the Boot ROM.
This makes the config unique per board which allows for changing
quad enable and status bit differences per flash device. It also
allows for timing differences due to the board layout.

This change also tweaks linker layout to leave more ram space for
the CircuitPython heap.
2020-10-07 15:23:47 -07:00