add tinyusb

tinyusb/hw/bsp/nrf/boards/arduino_nano33_ble/arduino_nano33_ble.ld

@@ -0,0 +1,32 @@
+/* Linker script to configure memory regions. */
+
+SEARCH_DIR(.)
+GROUP(-lgcc -lc -lnosys)
+
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x10000, LENGTH = 0xf0000
+  RAM_NVIC (rwx) : ORIGIN = 0x20000000, LENGTH = 0x100
+  RAM_CRASH_DATA (rwx) : ORIGIN = (0x20000000 + 0x100), LENGTH = 0x100
+  RAM (rwx) : ORIGIN = ((0x20000000 + 0x100) + 0x100), LENGTH = (0x40000 - (0x100 + 0x100))
+}
+
+SECTIONS
+{
+  . = ALIGN(4);
+  .svc_data :
+  {
+    PROVIDE(__start_svc_data = .);
+    KEEP(*(.svc_data))
+    PROVIDE(__stop_svc_data = .);
+  } > RAM
+  
+  .fs_data :
+  {
+    PROVIDE(__start_fs_data = .);
+    KEEP(*(.fs_data))
+    PROVIDE(__stop_fs_data = .);
+  } > RAM
+} INSERT AFTER .data;
+
+INCLUDE "nrf52_common.ld"

tinyusb/hw/bsp/nrf/boards/arduino_nano33_ble/board.h

@@ -0,0 +1,52 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020, Ha Thach (tinyusb.org)
+ *
+ * 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.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#define _PINNUM(port, pin)    ((port)*32 + (pin))
+
+// LED
+#define LED_PIN               _PINNUM(0, 24)
+#define LED_STATE_ON          0
+
+// Button
+#define BUTTON_PIN            _PINNUM(1, 11) // D2
+#define BUTTON_STATE_ACTIVE   0
+
+// UART
+#define UART_RX_PIN           _PINNUM(1, 10)
+#define UART_TX_PIN           _PINNUM(1, 3)
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */

tinyusb/hw/bsp/nrf/boards/arduino_nano33_ble/board.mk

@@ -0,0 +1,13 @@
+MCU_VARIANT = nrf52840
+CFLAGS += -DNRF52840_XXAA
+
+LD_FILE = $(BOARD_PATH)/$(BOARD).ld
+
+# flash using bossac (as part of Nano33 BSP tools)
+# can be found in arduino15/packages/arduino/tools/bossac/
+# Add it to your PATH or change BOSSAC variable to match your installation
+BOSSAC = bossac
+
+flash: $(BUILD)/$(PROJECT).bin
+	@:$(call check_defined, SERIAL, example: SERIAL=/dev/ttyACM0)
+	$(BOSSAC) --port=$(SERIAL) -U -i -e -w $^ -R