Add custom CPX build for display support

5 files changed, 208 insertions, 0 deletions

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 8492e6fa6..96fc3960e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -82,6 +82,7 @@ jobs:
         - "circuitplayground_bluefruit"
         - "circuitplayground_express"
         - "circuitplayground_express_crickit"
+        - "circuitplayground_express_displayio"
         - "cp32-m4"
         - "datalore_ip_m4"
         - "datum_distance"
diff --git a/ports/atmel-samd/boards/circuitplayground_express_displayio/board.c b/ports/atmel-samd/boards/circuitplayground_express_displayio/board.c
new file mode 100644
index 000000000..578963642
--- /dev/null
+++ b/ports/atmel-samd/boards/circuitplayground_express_displayio/board.c
@@ -0,0 +1,65 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 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 <string.h>
+
+#include "boards/board.h"
+#include "common-hal/microcontroller/Pin.h"
+#include "hal/include/hal_gpio.h"
+#include "shared-bindings/digitalio/DigitalInOut.h"
+#include "shared-bindings/neopixel_write/__init__.h"
+
+void board_init(void)
+{
+}
+
+// Check the status of the two buttons on CircuitPlayground Express. If both are
+// pressed, then boot into user safe mode.
+bool board_requests_safe_mode(void) {
+    gpio_set_pin_function(PIN_PA14, GPIO_PIN_FUNCTION_OFF);
+    gpio_set_pin_direction(PIN_PA14, GPIO_DIRECTION_IN);
+    gpio_set_pin_pull_mode(PIN_PA14, GPIO_PULL_DOWN);
+
+    gpio_set_pin_function(PIN_PA28, GPIO_PIN_FUNCTION_OFF);
+    gpio_set_pin_direction(PIN_PA28, GPIO_DIRECTION_IN);
+    gpio_set_pin_pull_mode(PIN_PA28, GPIO_PULL_DOWN);
+    bool safe_mode = gpio_get_pin_level(PIN_PA14) &&
+        gpio_get_pin_level(PIN_PA28);
+    reset_pin_number(PIN_PA14);
+    reset_pin_number(PIN_PA28);
+    return safe_mode;
+}
+
+void reset_board(void) {
+    uint8_t empty[30];
+    memset(empty, 0, 30);
+    digitalio_digitalinout_obj_t neopixel_pin;
+    common_hal_digitalio_digitalinout_construct(&neopixel_pin, &pin_PB23);
+    common_hal_digitalio_digitalinout_switch_to_output(&neopixel_pin, false,
+        DRIVE_MODE_PUSH_PULL);
+    common_hal_neopixel_write(&neopixel_pin, empty, 30);
+    common_hal_digitalio_digitalinout_deinit(&neopixel_pin);
+}
diff --git a/ports/atmel-samd/boards/circuitplayground_express_displayio/mpconfigboard.h b/ports/atmel-samd/boards/circuitplayground_express_displayio/mpconfigboard.h
new file mode 100644
index 000000000..333fc79f9
--- /dev/null
+++ b/ports/atmel-samd/boards/circuitplayground_express_displayio/mpconfigboard.h
@@ -0,0 +1,48 @@
+#define MICROPY_HW_BOARD_NAME "Adafruit CircuitPlayground Express with displayio"
+#define MICROPY_HW_MCU_NAME "samd21g18"
+
+#define MICROPY_HW_LED_STATUS   (&pin_PA17)
+
+// Don't allow touch on A0 (PA02), because it's connected to the speaker.
+#define PA02_NO_TOUCH       (true)
+
+// Salae reads 12mhz which is the limit even though we set it to the safer 8mhz.
+#define SPI_FLASH_BAUDRATE  (8000000)
+
+// On-board flash
+#define SPI_FLASH_MOSI_PIN          &pin_PA20
+#define SPI_FLASH_MISO_PIN          &pin_PA16
+#define SPI_FLASH_SCK_PIN           &pin_PA21
+#define SPI_FLASH_CS_PIN            &pin_PB22
+
+// These are pins not to reset.
+#define MICROPY_PORT_A        (0)
+#define MICROPY_PORT_B        (0)
+#define MICROPY_PORT_C        (0)
+
+#define SPEAKER_ENABLE_PIN    (&pin_PA30)
+
+// If you change this, then make sure to update the linker scripts as well to
+// make sure you don't overwrite code.
+#define CIRCUITPY_INTERNAL_NVM_SIZE 256
+
+#define BOARD_FLASH_SIZE (0x00040000 - 0x2000 - CIRCUITPY_INTERNAL_NVM_SIZE)
+
+#define CALIBRATE_CRYSTALLESS 1
+
+// Explanation of how a user got into safe mode.
+#define BOARD_USER_SAFE_MODE_ACTION "pressing both buttons at start up"
+
+#define DEFAULT_I2C_BUS_SCL (&pin_PB03)
+#define DEFAULT_I2C_BUS_SDA (&pin_PB02)
+
+#define DEFAULT_SPI_BUS_SCK (&pin_PA05)
+#define DEFAULT_SPI_BUS_MOSI (&pin_PA07)
+#define DEFAULT_SPI_BUS_MISO (&pin_PA06)
+
+#define DEFAULT_UART_BUS_RX (&pin_PB09)
+#define DEFAULT_UART_BUS_TX (&pin_PB08)
+
+// USB is always used internally so skip the pin objects for it.
+#define IGNORE_PIN_PA24     1
+#define IGNORE_PIN_PA25     1
diff --git a/ports/atmel-samd/boards/circuitplayground_express_displayio/mpconfigboard.mk b/ports/atmel-samd/boards/circuitplayground_express_displayio/mpconfigboard.mk
new file mode 100644
index 000000000..f0c9c6b8c
--- /dev/null
+++ b/ports/atmel-samd/boards/circuitplayground_express_displayio/mpconfigboard.mk
@@ -0,0 +1,31 @@
+LD_FILE = boards/samd21x18-bootloader-external-flash-crystalless.ld
+USB_VID = 0x239A
+USB_PID = 0x8019
+USB_PRODUCT = "CircuitPlayground Express with displayio"
+USB_MANUFACTURER = "Adafruit Industries LLC"
+
+CHIP_VARIANT = SAMD21G18A
+CHIP_FAMILY = samd21
+
+SPI_FLASH_FILESYSTEM = 1
+EXTERNAL_FLASH_DEVICE_COUNT = 2
+EXTERNAL_FLASH_DEVICES = "S25FL216K, GD25Q16C"
+
+# Turn off features and optimizations for Crickit build to make room for additional frozen libs.
+LONGINT_IMPL = NONE
+CIRCUITPY_BITBANGIO = 0
+CIRCUITPY_FREQUENCYIO = 0
+CIRCUITPY_I2CSLAVE = 0
+CIRCUITPY_PIXELBUF = 0
+CIRCUITPY_GAMEPAD = 0
+CIRCUITPY_RTC = 0
+
+SUPEROPT_GC = 0
+CFLAGS_INLINE_LIMIT = 55
+
+# Include these Python libraries in firmware.
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_BusDevice
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_CircuitPlayground
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_LIS3DH
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_NeoPixel
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Thermistor
diff --git a/ports/atmel-samd/boards/circuitplayground_express_displayio/pins.c b/ports/atmel-samd/boards/circuitplayground_express_displayio/pins.c
new file mode 100644
index 000000000..6fc46bd21
--- /dev/null
+++ b/ports/atmel-samd/boards/circuitplayground_express_displayio/pins.c
@@ -0,0 +1,63 @@
+#include "shared-bindings/board/__init__.h"
+
+STATIC const mp_rom_map_elem_t board_global_dict_table[] = {
+    { MP_ROM_QSTR(MP_QSTR_A0), MP_ROM_PTR(&pin_PA02) },
+    { MP_ROM_QSTR(MP_QSTR_D12), MP_ROM_PTR(&pin_PA02) },
+    { MP_ROM_QSTR(MP_QSTR_SPEAKER), MP_ROM_PTR(&pin_PA02) },
+    { MP_ROM_QSTR(MP_QSTR_A1), MP_ROM_PTR(&pin_PA05) },
+    { MP_ROM_QSTR(MP_QSTR_D6), MP_ROM_PTR(&pin_PA05) },
+    { MP_ROM_QSTR(MP_QSTR_A2), MP_ROM_PTR(&pin_PA06) },
+    { MP_ROM_QSTR(MP_QSTR_D9), MP_ROM_PTR(&pin_PA06) },
+    { MP_ROM_QSTR(MP_QSTR_A3), MP_ROM_PTR(&pin_PA07) },
+    { MP_ROM_QSTR(MP_QSTR_D10), MP_ROM_PTR(&pin_PA07) },
+    { MP_ROM_QSTR(MP_QSTR_A4), MP_ROM_PTR(&pin_PB03) },
+    { MP_ROM_QSTR(MP_QSTR_D3), MP_ROM_PTR(&pin_PB03) },
+    { MP_ROM_QSTR(MP_QSTR_SCL), MP_ROM_PTR(&pin_PB03) },
+    { MP_ROM_QSTR(MP_QSTR_A5), MP_ROM_PTR(&pin_PB02) },
+    { MP_ROM_QSTR(MP_QSTR_D2), MP_ROM_PTR(&pin_PB02) },
+    { MP_ROM_QSTR(MP_QSTR_SDA), MP_ROM_PTR(&pin_PB02) },
+    { MP_ROM_QSTR(MP_QSTR_A6), MP_ROM_PTR(&pin_PB09) },
+    { MP_ROM_QSTR(MP_QSTR_D0), MP_ROM_PTR(&pin_PB09) },
+    { MP_ROM_QSTR(MP_QSTR_RX), MP_ROM_PTR(&pin_PB09) },
+    { MP_ROM_QSTR(MP_QSTR_A7), MP_ROM_PTR(&pin_PB08) },
+    { MP_ROM_QSTR(MP_QSTR_D1), MP_ROM_PTR(&pin_PB08) },
+    { MP_ROM_QSTR(MP_QSTR_TX), MP_ROM_PTR(&pin_PB08) },
+    { MP_ROM_QSTR(MP_QSTR_LIGHT), MP_ROM_PTR(&pin_PA11) },
+    { MP_ROM_QSTR(MP_QSTR_A8), MP_ROM_PTR(&pin_PA11) },
+    { MP_ROM_QSTR(MP_QSTR_TEMPERATURE), MP_ROM_PTR(&pin_PA09) },
+    { MP_ROM_QSTR(MP_QSTR_A9), MP_ROM_PTR(&pin_PA09) },
+
+    { MP_ROM_QSTR(MP_QSTR_BUTTON_A), MP_ROM_PTR(&pin_PA28) },
+    { MP_ROM_QSTR(MP_QSTR_D4), MP_ROM_PTR(&pin_PA28) },
+    { MP_ROM_QSTR(MP_QSTR_BUTTON_B), MP_ROM_PTR(&pin_PA14) },
+    { MP_ROM_QSTR(MP_QSTR_D5), MP_ROM_PTR(&pin_PA14) },
+    { MP_ROM_QSTR(MP_QSTR_SLIDE_SWITCH), MP_ROM_PTR(&pin_PA15) },
+    { MP_ROM_QSTR(MP_QSTR_D7), MP_ROM_PTR(&pin_PA15) },
+    { MP_ROM_QSTR(MP_QSTR_NEOPIXEL), MP_ROM_PTR(&pin_PB23) },
+    { MP_ROM_QSTR(MP_QSTR_D8), MP_ROM_PTR(&pin_PB23) },
+
+    { MP_ROM_QSTR(MP_QSTR_D13), MP_ROM_PTR(&pin_PA17) },
+
+    { MP_ROM_QSTR(MP_QSTR_REMOTEIN),  MP_ROM_PTR(&pin_PA12) },
+    { MP_ROM_QSTR(MP_QSTR_IR_RX),  MP_ROM_PTR(&pin_PA12) },
+    { MP_ROM_QSTR(MP_QSTR_REMOTEOUT),  MP_ROM_PTR(&pin_PA23) },
+    { MP_ROM_QSTR(MP_QSTR_IR_TX),  MP_ROM_PTR(&pin_PA23) },
+    { MP_ROM_QSTR(MP_QSTR_IR_PROXIMITY), MP_ROM_PTR(&pin_PA04) },
+
+    { MP_ROM_QSTR(MP_QSTR_MICROPHONE_CLOCK), MP_ROM_PTR(&pin_PA10) },
+    { MP_ROM_QSTR(MP_QSTR_MICROPHONE_DATA), MP_ROM_PTR(&pin_PA08) },
+
+    { MP_ROM_QSTR(MP_QSTR_ACCELEROMETER_INTERRUPT), MP_ROM_PTR(&pin_PA13) },
+    { MP_ROM_QSTR(MP_QSTR_ACCELEROMETER_SDA),   MP_ROM_PTR(&pin_PA00) },
+    { MP_ROM_QSTR(MP_QSTR_ACCELEROMETER_SCL),   MP_ROM_PTR(&pin_PA01) },
+
+    { MP_ROM_QSTR(MP_QSTR_SPEAKER_ENABLE), MP_ROM_PTR(&pin_PA30) },
+
+    { MP_ROM_QSTR(MP_QSTR_SCK),  MP_ROM_PTR(&pin_PA05) },
+    { MP_ROM_QSTR(MP_QSTR_MOSI), MP_ROM_PTR(&pin_PA07) },
+    { MP_ROM_QSTR(MP_QSTR_MISO), MP_ROM_PTR(&pin_PA06) },
+    { MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },
+    { MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&board_spi_obj) },
+    { MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&board_uart_obj) },
+};
+MP_DEFINE_CONST_DICT(board_module_globals, board_global_dict_table);