adafruit · tannewt · Feb 4, 2026 · Jan 13, 2026 · Jan 24, 2026 · Jan 24, 2026
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
@@ -28,7 +28,7 @@ repos:
             lib/mbedtls_errors/generate_errors.diff
           )
   - repo: https://github.com/codespell-project/codespell
-    rev: v2.2.4
+    rev: v2.4.1
     hooks:
       - id: codespell
         args: [-w]

diff --git a/extmod/vfs_blockdev.c b/extmod/vfs_blockdev.c
@@ -63,7 +63,16 @@ void mp_vfs_blockdev_init(mp_vfs_blockdev_t *self, mp_obj_t bdev) {
     #endif
     #if CIRCUITPY_SDIOIO
     if (mp_obj_get_type(bdev) == &sdioio_SDCard_type) {
-        // TODO: Enable native blockdev for SDIO too.
+        self->flags |= MP_BLOCKDEV_FLAG_NATIVE | MP_BLOCKDEV_FLAG_HAVE_IOCTL;
+        self->readblocks[0] = mp_const_none;
+        self->readblocks[1] = bdev;
+        self->readblocks[2] = (mp_obj_t)sdioio_sdcard_readblocks; // native version
+        self->writeblocks[0] = mp_const_none;
+        self->writeblocks[1] = bdev;
+        self->writeblocks[2] = (mp_obj_t)sdioio_sdcard_writeblocks; // native version
+        self->u.ioctl[0] = mp_const_none;
+        self->u.ioctl[1] = bdev;
+        self->u.ioctl[2] = (mp_obj_t)sdioio_sdcard_ioctl; // native version
     }
     #endif
     if (self->u.ioctl[0] != MP_OBJ_NULL) {

diff --git a/locale/circuitpython.pot b/locale/circuitpython.pot
@@ -119,7 +119,8 @@ msgstr ""
 #: ports/raspberrypi/common-hal/rp2pio/StateMachine.c
 #: ports/raspberrypi/common-hal/usb_host/Port.c
 #: shared-bindings/digitalio/DigitalInOut.c
-#: shared-bindings/microcontroller/Pin.c shared-module/max3421e/Max3421E.c
+#: shared-bindings/i2cioexpander/IOPin.c shared-bindings/microcontroller/Pin.c
+#: shared-module/max3421e/Max3421E.c
 msgid "%q in use"
 msgstr ""
 
@@ -132,7 +133,7 @@ msgid "%q indices must be integers, not %s"
 msgstr ""
 
 #: ports/analog/common-hal/busio/SPI.c ports/analog/common-hal/busio/UART.c
-#: shared-module/bitbangio/SPI.c
+#: shared-bindings/digitalio/DigitalInOutProtocol.c
 msgid "%q init failed"
 msgstr ""
 
@@ -235,6 +236,14 @@ msgstr ""
 msgid "%q must be power of 2"
 msgstr ""
 
+#: shared-bindings/digitalio/DigitalInOutProtocol.c
+msgid "%q object missing '%q' attribute"
+msgstr ""
+
+#: shared-bindings/digitalio/DigitalInOutProtocol.c
+msgid "%q object missing '%q' method"
+msgstr ""
+
 #: shared-bindings/wifi/Monitor.c
 msgid "%q out of bounds"
 msgstr ""
@@ -304,7 +313,7 @@ msgstr ""
 msgid "'%q' argument required"
 msgstr ""
 
-#: py/proto.c
+#: py/proto.c shared-bindings/digitalio/DigitalInOutProtocol.c
 msgid "'%q' object does not support '%q'"
 msgstr ""
 
@@ -766,6 +775,10 @@ msgstr ""
 msgid "Cannot create a new Adapter; use _bleio.adapter;"
 msgstr ""
 
+#: shared-module/i2cioexpander/IOExpander.c
+msgid "Cannot deinitialize board IOExpander"
+msgstr ""
+
 #: shared-bindings/displayio/Bitmap.c
 #: shared-bindings/memorymonitor/AllocationSize.c
 #: shared-bindings/pulseio/PulseIn.c
@@ -800,6 +813,7 @@ msgid "Cannot remount path when visible via USB."
 msgstr ""
 
 #: shared-bindings/digitalio/DigitalInOut.c
+#: shared-bindings/i2cioexpander/IOPin.c
 msgid "Cannot set value when direction is input."
 msgstr ""
 
@@ -939,6 +953,7 @@ msgid "Done"
 msgstr ""
 
 #: shared-bindings/digitalio/DigitalInOut.c
+#: shared-bindings/i2cioexpander/IOPin.c
 msgid "Drive mode not used when direction is input."
 msgstr ""
 
@@ -1277,8 +1292,8 @@ msgstr ""
 #: ports/raspberrypi/common-hal/picodvi/Framebuffer_RP2040.c py/argcheck.c
 #: shared-bindings/digitalio/DigitalInOut.c
 #: shared-bindings/epaperdisplay/EPaperDisplay.c
-#: shared-bindings/mipidsi/Display.c shared-bindings/pwmio/PWMOut.c
-#: shared-bindings/supervisor/__init__.c
+#: shared-bindings/i2cioexpander/IOPin.c shared-bindings/mipidsi/Display.c
+#: shared-bindings/pwmio/PWMOut.c shared-bindings/supervisor/__init__.c
 #: shared-module/aurora_epaper/aurora_framebuffer.c
 #: shared-module/lvfontio/OnDiskFont.c
 msgid "Invalid %q"
@@ -1880,6 +1895,7 @@ msgid "Publishers can only be created from a parent node"
 msgstr ""
 
 #: shared-bindings/digitalio/DigitalInOut.c
+#: shared-bindings/i2cioexpander/IOPin.c
 msgid "Pull not used when direction is output."
 msgstr ""
 
@@ -2539,6 +2555,10 @@ msgstr ""
 msgid "a bytes-like object is required"
 msgstr ""
 
+#: shared-bindings/i2cioexpander/IOExpander.c
+msgid "address out of range"
+msgstr ""
+
 #: shared-bindings/i2ctarget/I2CTarget.c
 msgid "addresses is empty"
 msgstr ""
@@ -3814,6 +3834,10 @@ msgstr ""
 msgid "not supported for input types"
 msgstr ""
 
+#: shared-bindings/i2cioexpander/IOExpander.c
+msgid "num_pins must be 8 or 16"
+msgstr ""
+
 #: extmod/ulab/code/numpy/create.c
 msgid "number of points must be at least 2"
 msgstr ""
@@ -3827,6 +3851,10 @@ msgstr ""
 msgid "object '%s' isn't a tuple or list"
 msgstr ""
 
+#: shared-bindings/digitalio/DigitalInOutProtocol.c
+msgid "object does not support DigitalInOut protocol"
+msgstr ""
+
 #: py/obj.c
 msgid "object doesn't support item assignment"
 msgstr ""

diff --git a/ports/analog/common-hal/busio/I2C.c b/ports/analog/common-hal/busio/I2C.c
@@ -187,7 +187,7 @@ void common_hal_busio_i2c_unlock(busio_i2c_obj_t *self) {
 }
 
 // Write data to the device selected by address
-uint8_t common_hal_busio_i2c_write(busio_i2c_obj_t *self, uint16_t addr,
+mp_negative_errno_t common_hal_busio_i2c_write(busio_i2c_obj_t *self, uint16_t addr,
     const uint8_t *data, size_t len) {
 
     int ret;
@@ -202,14 +202,14 @@ uint8_t common_hal_busio_i2c_write(busio_i2c_obj_t *self, uint16_t addr,
     };
     ret = MXC_I2C_MasterTransaction(&wr_req);
     if (ret) {
-        return MP_EIO;
+        return -MP_EIO;
     }
 
     return 0;
 }
 
 // Read into buffer from the device selected by address
-uint8_t common_hal_busio_i2c_read(busio_i2c_obj_t *self,
+mp_negative_errno_t common_hal_busio_i2c_read(busio_i2c_obj_t *self,
     uint16_t addr,
     uint8_t *data, size_t len) {
 
@@ -226,14 +226,14 @@ uint8_t common_hal_busio_i2c_read(busio_i2c_obj_t *self,
     ret = MXC_I2C_MasterTransaction(&rd_req);
     if (ret) {
         // Return I/O error
-        return MP_EIO;
+        return -MP_EIO;
     }
 
     return 0;
 }
 
 // Write the bytes from out_data to the device selected by address
-uint8_t common_hal_busio_i2c_write_read(busio_i2c_obj_t *self, uint16_t addr,
+mp_negative_errno_t common_hal_busio_i2c_write_read(busio_i2c_obj_t *self, uint16_t addr,
     uint8_t *out_data, size_t out_len,
     uint8_t *in_data, size_t in_len) {
 
@@ -249,7 +249,7 @@ uint8_t common_hal_busio_i2c_write_read(busio_i2c_obj_t *self, uint16_t addr,
     };
     ret = MXC_I2C_MasterTransaction(&wr_rd_req);
     if (ret) {
-        return MP_EIO;
+        return -MP_EIO;
     }
 
     return 0;

diff --git a/ports/atmel-samd/Makefile b/ports/atmel-samd/Makefile
@@ -169,7 +169,7 @@ LIBS += -lm
 endif
 
 ifeq ($(CHIP_FAMILY), samd21)
-LDFLAGS += -mthumb -mcpu=cortex-m0plus -Lasf/thirdparty/CMSIS/Lib/GCC/
+LDFLAGS += -mthumb -mcpu=cortex-m0plus -Lasf/thirdparty/CMSIS/Lib/GCC/ # codespell:ignore thirdparty
 BOOTLOADER_SIZE := 0x2000
 else ifeq ($(CHIP_FAMILY), samd51)
 LDFLAGS += -mthumb -mcpu=cortex-m4

diff --git a/ports/atmel-samd/asf4_conf/samd21/hpl_sercom_config.h b/ports/atmel-samd/asf4_conf/samd21/hpl_sercom_config.h
@@ -431,7 +431,7 @@
 // <0x2=>8x arithmetic
 // <0x3=>8x fractional
 // <0x3=>3x
-// <i> How many over-sampling bits used when samling data state
+// <i> How many over-sampling bits used when sampling data state
 // <id> usart_arch_sampr
 #ifndef CONF_SERCOM_2_USART_SAMPR
 #define CONF_SERCOM_2_USART_SAMPR 0x0

diff --git a/ports/atmel-samd/asf4_conf/samd51/hpl_sercom_config.h b/ports/atmel-samd/asf4_conf/samd51/hpl_sercom_config.h
@@ -431,7 +431,7 @@
 // <0x2=>8x arithmetic
 // <0x3=>8x fractional
 // <0x3=>3x
-// <i> How many over-sampling bits used when samling data state
+// <i> How many over-sampling bits used when sampling data state
 // <id> usart_arch_sampr
 #ifndef CONF_SERCOM_2_USART_SAMPR
 #define CONF_SERCOM_2_USART_SAMPR 0x0

diff --git a/ports/atmel-samd/asf4_conf/same51/hpl_sercom_config.h b/ports/atmel-samd/asf4_conf/same51/hpl_sercom_config.h
@@ -431,7 +431,7 @@
 // <0x2=>8x arithmetic
 // <0x3=>8x fractional
 // <0x3=>3x
-// <i> How many over-sampling bits used when samling data state
+// <i> How many over-sampling bits used when sampling data state
 // <id> usart_arch_sampr
 #ifndef CONF_SERCOM_2_USART_SAMPR
 #define CONF_SERCOM_2_USART_SAMPR 0x0

diff --git a/ports/atmel-samd/asf4_conf/same54/hpl_sercom_config.h b/ports/atmel-samd/asf4_conf/same54/hpl_sercom_config.h
@@ -431,7 +431,7 @@
 // <0x2=>8x arithmetic
 // <0x3=>8x fractional
 // <0x3=>3x
-// <i> How many over-sampling bits used when samling data state
+// <i> How many over-sampling bits used when sampling data state
 // <id> usart_arch_sampr
 #ifndef CONF_SERCOM_2_USART_SAMPR
 #define CONF_SERCOM_2_USART_SAMPR 0x0

diff --git a/ports/atmel-samd/boards/hallowing_m0_express/board.c b/ports/atmel-samd/boards/hallowing_m0_express/board.c
@@ -54,9 +54,9 @@ void board_init(void) {
     common_hal_busio_spi_never_reset(spi);
     common_hal_fourwire_fourwire_construct(bus,
         spi,
-        &pin_PA28, // Command or data
-        &pin_PA01, // Chip select
-        &pin_PA27, // Reset
+        MP_OBJ_FROM_PTR(&pin_PA28), // Command or data
+        MP_OBJ_FROM_PTR(&pin_PA01), // Chip select
+        MP_OBJ_FROM_PTR(&pin_PA27), // Reset
         12000000, // Baudrate
         0, // Polarity
         0); // Phase

diff --git a/ports/atmel-samd/boards/hallowing_m4_express/board.c b/ports/atmel-samd/boards/hallowing_m4_express/board.c
@@ -35,9 +35,9 @@ void board_init(void) {
     bus->base.type = &fourwire_fourwire_type;
     common_hal_fourwire_fourwire_construct(bus,
         spi,
-        &pin_PB31, // TFT_DC Command or data
-        &pin_PA27, // TFT_CS Chip select
-        &pin_PB30, // TFT_RST Reset
+        MP_OBJ_FROM_PTR(&pin_PB31), // TFT_DC Command or data
+        MP_OBJ_FROM_PTR(&pin_PA27), // TFT_CS Chip select
+        MP_OBJ_FROM_PTR(&pin_PB30), // TFT_RST Reset
         60000000, // Baudrate
         0, // Polarity
         0); // Phase

diff --git a/ports/atmel-samd/boards/monster_m4sk/board.c b/ports/atmel-samd/boards/monster_m4sk/board.c
@@ -35,9 +35,9 @@ void board_init(void) {
     bus->base.type = &fourwire_fourwire_type;
     common_hal_fourwire_fourwire_construct(bus,
         spi,
-        &pin_PA07, // TFT_DC Command or data
-        &pin_PA06, // TFT_CS Chip select
-        &pin_PA04, // TFT_RST Reset
+        MP_OBJ_FROM_PTR(&pin_PA07), // TFT_DC Command or data
+        MP_OBJ_FROM_PTR(&pin_PA06), // TFT_CS Chip select
+        MP_OBJ_FROM_PTR(&pin_PA04), // TFT_RST Reset
         60000000, // Baudrate
         0, // Polarity
         0); // Phase

diff --git a/ports/atmel-samd/boards/openbook_m4/board.c b/ports/atmel-samd/boards/openbook_m4/board.c
@@ -44,9 +44,9 @@ void board_init(void) {
     bus->base.type = &fourwire_fourwire_type;
     common_hal_fourwire_fourwire_construct(bus,
         spi,
-        &pin_PB05, // EPD_DC Command or data
-        &pin_PB07, // EPD_CS Chip select
-        &pin_PA00, // EPD_RST Reset
+        MP_OBJ_FROM_PTR(&pin_PB05), // EPD_DC Command or data
+        MP_OBJ_FROM_PTR(&pin_PB07), // EPD_CS Chip select
+        MP_OBJ_FROM_PTR(&pin_PA00), // EPD_RST Reset
         1000000, // Baudrate
         0, // Polarity
         0); // Phase

diff --git a/ports/atmel-samd/boards/pewpew_lcd/board.c b/ports/atmel-samd/boards/pewpew_lcd/board.c
@@ -54,9 +54,9 @@ void board_init(void) {
     bus->base.type = &fourwire_fourwire_type;
     common_hal_fourwire_fourwire_construct(bus,
         spi,
-        &pin_PA19, // TFT_DC Command or data
-        &pin_PA17, // TFT_CS Chip select
-        &pin_PA18, // TFT_RST Reset
+        MP_OBJ_FROM_PTR(&pin_PA19), // TFT_DC Command or data
+        MP_OBJ_FROM_PTR(&pin_PA17), // TFT_CS Chip select
+        MP_OBJ_FROM_PTR(&pin_PA18), // TFT_RST Reset
         60000000, // Baudrate
         0, // Polarity
         0); // Phase

diff --git a/ports/atmel-samd/boards/pewpew_m4/board.c b/ports/atmel-samd/boards/pewpew_m4/board.c
@@ -83,9 +83,9 @@ void board_init(void) {
     bus->base.type = &fourwire_fourwire_type;
     common_hal_fourwire_fourwire_construct(bus,
         spi,
-        &pin_PA16, // TFT_DC Command or data
-        &pin_PA11, // TFT_CS Chip select
-        &pin_PA17, // TFT_RST Reset
+        MP_OBJ_FROM_PTR(&pin_PA16), // TFT_DC Command or data
+        MP_OBJ_FROM_PTR(&pin_PA11), // TFT_CS Chip select
+        MP_OBJ_FROM_PTR(&pin_PA17), // TFT_RST Reset
         60000000, // Baudrate
         0, // Polarity
         0); // Phase

diff --git a/ports/atmel-samd/boards/pybadge/board.c b/ports/atmel-samd/boards/pybadge/board.c
@@ -56,9 +56,9 @@ void board_init(void) {
     bus->base.type = &fourwire_fourwire_type;
     common_hal_fourwire_fourwire_construct(bus,
         spi,
-        &pin_PB05, // TFT_DC Command or data
-        &pin_PB07, // TFT_CS Chip select
-        &pin_PA00, // TFT_RST Reset
+        MP_OBJ_FROM_PTR(&pin_PB05), // TFT_DC Command or data
+        MP_OBJ_FROM_PTR(&pin_PB07), // TFT_CS Chip select
+        MP_OBJ_FROM_PTR(&pin_PA00), // TFT_RST Reset
         60000000, // Baudrate
         0, // Polarity
         0); // Phase

diff --git a/ports/atmel-samd/boards/pygamer/board.c b/ports/atmel-samd/boards/pygamer/board.c
@@ -57,9 +57,9 @@ void board_init(void) {
     bus->base.type = &fourwire_fourwire_type;
     common_hal_fourwire_fourwire_construct(bus,
         spi,
-        &pin_PB05, // TFT_DC Command or data
-        &pin_PB12, // TFT_CS Chip select
-        &pin_PA00, // TFT_RST Reset
+        MP_OBJ_FROM_PTR(&pin_PB05), // TFT_DC Command or data
+        MP_OBJ_FROM_PTR(&pin_PB12), // TFT_CS Chip select
+        MP_OBJ_FROM_PTR(&pin_PA00), // TFT_RST Reset
         60000000, // Baudrate
         0, // Polarity
         0); // Phase

diff --git a/ports/atmel-samd/boards/seeeduino_wio_terminal/board.c b/ports/atmel-samd/boards/seeeduino_wio_terminal/board.c
@@ -52,9 +52,9 @@ void board_init(void) {
     bus->base.type = &fourwire_fourwire_type;
     common_hal_fourwire_fourwire_construct(bus,
         spi,
-        &pin_PC06, // TFT_DC Command or data
-        &pin_PB21, // TFT_CS Chip select
-        &pin_PC07, // TFT_RST Reset
+        MP_OBJ_FROM_PTR(&pin_PC06), // TFT_DC Command or data
+        MP_OBJ_FROM_PTR(&pin_PB21), // TFT_CS Chip select
+        MP_OBJ_FROM_PTR(&pin_PC07), // TFT_RST Reset
         60000000, // Baudrate
         0, // Polarity
         0); // Phase

diff --git a/ports/atmel-samd/boards/ugame10/board.c b/ports/atmel-samd/boards/ugame10/board.c
@@ -53,9 +53,9 @@ void board_init(void) {
     busio_spi_obj_t *spi = common_hal_board_create_spi(0);
     common_hal_fourwire_fourwire_construct(bus,
         spi,
-        &pin_PA09, // Command or data
-        &pin_PA08, // Chip select
-        NULL, // Reset
+        MP_OBJ_FROM_PTR(&pin_PA09), // Command or data
+        MP_OBJ_FROM_PTR(&pin_PA08), // Chip select
+        MP_OBJ_NULL, // Reset
         24000000, // Baudrate
         0, // Polarity
         0); // Phase