Stub out the non-sequential parallel bus constructor

.. most boards can't support non-sequential pins, so share the
implementation of the error routine so we get an identical message.

Author: jepler

locale/circuitpython.pot

@@ -586,7 +586,6 @@ msgstr ""
 msgid "Buffer incorrect size. Should be %d bytes."
 msgstr ""
 
-#: shared-bindings/displayio/Display.c
 #: shared-bindings/framebufferio/FramebufferDisplay.c
 msgid "Buffer is not a bytearray."
 msgstr ""
@@ -2194,6 +2193,12 @@ msgstr ""
 msgid "The sample's signedness does not match the mixer's"
 msgstr ""
 
+#: shared-module/paralleldisplay/ParallelBus.c
+msgid ""
+"This microcontroller only supports data0=, not data_pins=, because it "
+"requires contiguous pins."
+msgstr ""
+
 #: shared-bindings/displayio/TileGrid.c
 msgid "Tile height must exactly divide bitmap height"
 msgstr ""

py/circuitpy_defns.mk

@@ -551,6 +551,7 @@ SRC_SHARED_MODULE_ALL = \
 	onewireio/__init__.c \
 	onewireio/OneWire.c \
 	os/__init__.c \
+	paralleldisplay/ParallelBus.c \
 	qrio/__init__.c \
 	qrio/QRDecoder.c \
 	rainbowio/__init__.c \

shared-module/paralleldisplay/ParallelBus.c

@@ -0,0 +1,37 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "shared-bindings/paralleldisplay/ParallelBus.h"
+#include "py/runtime.h"
+
+// If non-sequential pins aren't supported, then this default (weak)
+// implementation will raise an exception for you.
+__attribute__((weak))
+void common_hal_paralleldisplay_parallelbus_construct_nonsequential(paralleldisplay_parallelbus_obj_t *self,
+    uint8_t n_pins, mcu_pin_obj_t **data_pins, const mcu_pin_obj_t *command, const mcu_pin_obj_t *chip_select,
+    const mcu_pin_obj_t *write, const mcu_pin_obj_t *read, const mcu_pin_obj_t *reset, uint32_t frequency) {
+    mp_raise_NotImplementedError(translate("This microcontroller only supports data0=, not data_pins=, because it requires contiguous pins."));
+}