Add support for Serpente boards

5 files changed, 134 insertions, 0 deletions

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e18be72ae..8492e6fa6 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -135,6 +135,7 @@ jobs:
         - "robohatmm1_m0"
         - "robohatmm1_m4"
         - "sam32"
+        - "serpente"
         - "snekboard"
         - "sparkfun_lumidrive"
         - "sparkfun_nrf52840_mini"
diff --git a/ports/atmel-samd/boards/serpente/board.c b/ports/atmel-samd/boards/serpente/board.c
new file mode 100644
index 000000000..d7e856d61
--- /dev/null
+++ b/ports/atmel-samd/boards/serpente/board.c
@@ -0,0 +1,37 @@
+/*
+ * 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 "boards/board.h"
+
+void board_init(void) {
+}
+
+bool board_requests_safe_mode(void) {
+    return false;
+}
+
+void reset_board(void) {
+}
diff --git a/ports/atmel-samd/boards/serpente/mpconfigboard.h b/ports/atmel-samd/boards/serpente/mpconfigboard.h
new file mode 100644
index 000000000..034e1f6c3
--- /dev/null
+++ b/ports/atmel-samd/boards/serpente/mpconfigboard.h
@@ -0,0 +1,39 @@
+#define MICROPY_HW_BOARD_NAME "Serpente"
+#define MICROPY_HW_MCU_NAME "samd21e18"
+
+#define MICROPY_HW_LED_STATUS   (&pin_PA23)
+
+#define SPI_FLASH_MOSI_PIN          &pin_PA16
+#define SPI_FLASH_MISO_PIN          &pin_PA18
+#define SPI_FLASH_SCK_PIN           &pin_PA17
+#define SPI_FLASH_CS_PIN            &pin_PA15
+
+// These are pins not to reset.
+#define MICROPY_PORT_A        (PORT_PA00 | PORT_PA01)
+#define MICROPY_PORT_B        (0)
+#define MICROPY_PORT_C        (0)
+
+// 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 DEFAULT_I2C_BUS_SCL (&pin_PA09)
+#define DEFAULT_I2C_BUS_SDA (&pin_PA08)
+
+#define DEFAULT_SPI_BUS_SCK (&pin_PA05)
+#define DEFAULT_SPI_BUS_MOSI (&pin_PA04)
+#define DEFAULT_SPI_BUS_MISO (&pin_PA06)
+
+#define DEFAULT_UART_BUS_RX (&pin_PA09)
+#define DEFAULT_UART_BUS_TX (&pin_PA08)
+
+// USB is always used internally so skip the pin objects for it.
+#define IGNORE_PIN_PA24     1
+#define IGNORE_PIN_PA25     1
+
+// Not connected
+#define IGNORE_PIN_PA13     1
+#define IGNORE_PIN_PA28     1
+
diff --git a/ports/atmel-samd/boards/serpente/mpconfigboard.mk b/ports/atmel-samd/boards/serpente/mpconfigboard.mk
new file mode 100644
index 000000000..c8b2dc9f5
--- /dev/null
+++ b/ports/atmel-samd/boards/serpente/mpconfigboard.mk
@@ -0,0 +1,17 @@
+LD_FILE = boards/samd21x18-bootloader-external-flash-crystalless.ld
+USB_VID = 0x239A
+USB_PID = 0x8012
+USB_PRODUCT = "Serpente"
+USB_MANUFACTURER = "arturo182"
+
+CHIP_VARIANT = SAMD21E18A
+CHIP_FAMILY = samd21
+
+SPI_FLASH_FILESYSTEM = 1
+EXTERNAL_FLASH_DEVICE_COUNT = 1
+EXTERNAL_FLASH_DEVICES = GD25Q32C
+LONGINT_IMPL = NONE
+
+ifneq ($(TRANSLATION), en_US)
+CIRCUITPY_SMALL_BUILD = 1
+endif
diff --git a/ports/atmel-samd/boards/serpente/pins.c b/ports/atmel-samd/boards/serpente/pins.c
new file mode 100644
index 000000000..0bf686656
--- /dev/null
+++ b/ports/atmel-samd/boards/serpente/pins.c
@@ -0,0 +1,40 @@
+#include "shared-bindings/board/__init__.h"
+
+STATIC const mp_rom_map_elem_t board_global_dict_table[] = {
+    { MP_ROM_QSTR(MP_QSTR_D0), MP_ROM_PTR(&pin_PA04) },
+    { MP_ROM_QSTR(MP_QSTR_D1), MP_ROM_PTR(&pin_PA05) },
+    { MP_ROM_QSTR(MP_QSTR_D2), MP_ROM_PTR(&pin_PA06) },
+    { MP_ROM_QSTR(MP_QSTR_D3), MP_ROM_PTR(&pin_PA07) },
+    { MP_ROM_QSTR(MP_QSTR_D4), MP_ROM_PTR(&pin_PA08) },
+    { MP_ROM_QSTR(MP_QSTR_D5), MP_ROM_PTR(&pin_PA09) },
+
+    { MP_ROM_QSTR(MP_QSTR_A0), MP_ROM_PTR(&pin_PA04) },
+    { MP_ROM_QSTR(MP_QSTR_A1), MP_ROM_PTR(&pin_PA05) },
+    { MP_ROM_QSTR(MP_QSTR_A2), MP_ROM_PTR(&pin_PA06) },
+    { MP_ROM_QSTR(MP_QSTR_A3), MP_ROM_PTR(&pin_PA07) },
+    { MP_ROM_QSTR(MP_QSTR_A4), MP_ROM_PTR(&pin_PA08) },
+    { MP_ROM_QSTR(MP_QSTR_A5), MP_ROM_PTR(&pin_PA09) },
+
+    { MP_ROM_QSTR(MP_QSTR_LED_G), MP_ROM_PTR(&pin_PA19) },
+    { MP_ROM_QSTR(MP_QSTR_LED_R), MP_ROM_PTR(&pin_PA22) },
+    { MP_ROM_QSTR(MP_QSTR_LED_B), MP_ROM_PTR(&pin_PA23) },
+
+    { MP_ROM_QSTR(MP_QSTR_MOSI), MP_ROM_PTR(&pin_PA04) },
+    { MP_ROM_QSTR(MP_QSTR_MISO), MP_ROM_PTR(&pin_PA06) },
+    { MP_ROM_QSTR(MP_QSTR_SCK), MP_ROM_PTR(&pin_PA05) },
+
+    { MP_ROM_QSTR(MP_QSTR_SCL), MP_ROM_PTR(&pin_PA09) },
+    { MP_ROM_QSTR(MP_QSTR_SDA), MP_ROM_PTR(&pin_PA08) },
+
+    { MP_ROM_QSTR(MP_QSTR_RX), MP_ROM_PTR(&pin_PA09) },
+    { MP_ROM_QSTR(MP_QSTR_TX), MP_ROM_PTR(&pin_PA08) },
+
+    { MP_ROM_QSTR(MP_QSTR_RX2), MP_ROM_PTR(&pin_PA05) },
+    { MP_ROM_QSTR(MP_QSTR_TX2), MP_ROM_PTR(&pin_PA04) },
+
+    { 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);
+