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bump MSC buffer for RP2040 boards exposing SD-over-USB #10964

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bump MSC buffer for RP2040 boards exposing SD-over-USB #10964

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12 changes: 11 additions & 1 deletion ports/raspberrypi/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -200,10 +200,20 @@ CFLAGS += \
-DCFG_TUD_CDC_RX_BUFSIZE=256 \
-DCFG_TUD_MIDI_TX_BUFSIZE=128 \
-DCFG_TUD_CDC_TX_BUFSIZE=256 \
-DCFG_TUD_MSC_BUFSIZE=1024 \
-DPICO_RP2040_USB_DEVICE_UFRAME_FIX=1 \
-DPICO_RP2040_USB_DEVICE_ENUMERATION_FIX=1 \

# CFG_TUD_MSC_BUFSIZE: 1024 bytes is enough for internal flash MSC but
# causes macOS bulk-IN endpoint stalls on RP2040 during multi-sector
# SD card READ(10) probes. Bump to 16 KB only for RP2040 boards that
# actually expose an SD card over MSC. Other chips and non-SD boards
# stay at the small default. Root cause tracked at hathach/tinyusb.
ifeq ($(CHIP_VARIANT)_$(CIRCUITPY_SDCARDIO),RP2040_1)
CFLAGS += -DCFG_TUD_MSC_BUFSIZE=16384
else
CFLAGS += -DCFG_TUD_MSC_BUFSIZE=1024
endif

# option to override default optimization level, set in boards/$(BOARD)/mpconfigboard.mk
CFLAGS += $(OPTIMIZATION_FLAGS)

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