TonBERRY/tonberry-pico
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tonberry-pico/software
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Matthias Blankertz 9357b4d243 rp2_sd: Disable input synchronizer for MISO pin 
The PIO has an internal synchronizer on each GPIO input which adds two
cycles of delay. This prevents metastabilities in the PIO logic (see
RP2040 datasheet p. 374f). For high speed synchronous interfaces such as
SPI this needs to be disabled to reduce input delay.

Signed-off-by: Matthias Blankertz <matthias@blankertz.org>
2025-10-19 16:49:46 +02:00
..
boards/RPI_PICO_W
Switch btree to use mpy stack
2025-08-24 17:51:35 +02:00
lib
Switch btree to use mpy stack
2025-08-24 17:51:35 +02:00
modules
rp2_sd: Disable input synchronizer for MISO pin
2025-10-19 16:49:46 +02:00
src
hwconfig: Fix pad config for SD SPI, move clockrate to hwconfig
2025-10-13 23:38:33 +02:00
tests
Make hardware configurable
2025-10-07 22:12:44 +02:00
tools
rp2_sd: make debug flags accessible through cmake variables.
2025-07-22 21:39:07 +02:00
.clang-format
rp2_sd: Add write support to SD driver
2025-07-22 21:30:27 +02:00
.flake8
Restructure sources
2025-04-01 22:05:30 +02:00
build.sh
Make hardware configurable
2025-10-07 22:12:44 +02:00
CMakeLists.txt
build: Fix check-format and clang-format paths
2025-10-07 22:12:44 +02:00
Dockerfile.build
build: Copy python files to staging dir for littlefs
2025-05-20 22:04:27 +02:00
flash.sh
scripts: Add HW revision support to flash.sh
2025-10-07 22:12:44 +02:00
mypy.ini
Add infrastructure for pytest and mypy
2025-08-27 13:42:08 +02:00
pytest.ini
Add infrastructure for pytest and mypy
2025-08-27 13:42:08 +02:00
update-submodules.sh
micropython: Enable btree module for RPI_PICO_W
2025-08-19 20:05:01 +02:00