Update support for Cynthion boards

- Rename LUNA to Cynthion
- Add support for newer revisions (>=0.6)
- Bootloader (saturn-v) default size is now 2K

Author: mndza

docs/reference/supported.rst

@@ -175,7 +175,7 @@ SAMD11 & SAMD21
 -  `Adafruit Feather M0 Express <https://www.adafruit.com/product/3403>`__
 -  `Adafruit ItsyBitsy M0 Express <https://www.adafruit.com/product/3727>`__
 -  `Adafruit Metro M0 Express <https://www.adafruit.com/product/3505>`__
--  `Great Scott Gadgets LUNA <https://greatscottgadgets.com/luna/>`__
+-  `Great Scott Gadgets Cynthion <https://greatscottgadgets.com/cynthion/>`__
 -  `Microchip SAMD11 Xplained Pro <https://www.microchip.com/developmenttools/ProductDetails/atsamd11-xpro>`__
 -  `Microchip SAMD21 Xplained Pro <https://www.microchip.com/DevelopmentTools/ProductDetails/ATSAMD21-XPRO>`__
 -  `Seeeduino Xiao <https://www.seeedstudio.com/Seeeduino-XIAO-Arduino-Microcontroller-SAMD21-Cortex-M0+-p-4426.html>`__

hw/bsp/samd11/boards/luna_d11/board.h renamed to hw/bsp/samd11/boards/cynthion_d11/board.h

@@ -36,7 +36,13 @@
 #define LED_STATE_ON          0
 
 // Button
+#if ((_BOARD_REVISION_MAJOR_ == 0) && (_BOARD_REVISION_MINOR_ < 6))
 #define BUTTON_PIN            PIN_PA16 // pin PB22
+#define BUTTON_PULL_MODE      GPIO_PULL_UP
+#else
+#define BUTTON_PIN            PIN_PA02
+#define BUTTON_PULL_MODE      GPIO_PULL_OFF
+#endif
 #define BUTTON_STATE_ACTIVE   0
 
 #ifdef __cplusplus

hw/bsp/samd11/boards/cynthion_d11/board.mk

@@ -0,0 +1,22 @@
+BOARD_REVISION_MAJOR ?= 1
+BOARD_REVISION_MINOR ?= 0
+
+CFLAGS += -D__SAMD11D14AM__ \
+	-D_BOARD_REVISION_MAJOR_=$(BOARD_REVISION_MAJOR) \
+	-D_BOARD_REVISION_MINOR_=$(BOARD_REVISION_MINOR)
+
+# All source paths should be relative to the top level.
+LD_FILE = $(BOARD_PATH)/samd11d14am_flash.ld
+
+# Default bootloader size is now 2K, allow to specify other
+ifeq ($(BOOTLOADER_SIZE), )
+	BOOTLOADER_SIZE := 0x800
+endif
+LDFLAGS += -Wl,--defsym=BOOTLOADER_SIZE=$(BOOTLOADER_SIZE)
+
+# For flash-jlink target
+JLINK_DEVICE = ATSAMD11D14
+
+# flash using dfu-util
+flash: $(BUILD)/$(PROJECT).bin
+	dfu-util -a 0 -d 1d50:615c -D $< || dfu-util -a 0 -d 16d0:05a5 -D $<

hw/bsp/samd11/boards/luna_d11/samd11d14am_flash.ld renamed to hw/bsp/samd11/boards/cynthion_d11/samd11d14am_flash.ld

@@ -35,7 +35,7 @@ SEARCH_DIR(.)
 /* Memory Spaces Definitions */
 MEMORY
 {
-  rom      (rx)  : ORIGIN = 0x00000000 + 4K, LENGTH = 0x00004000 - 4K
+  rom      (rx)  : ORIGIN = 0x00000000 + BOOTLOADER_SIZE, LENGTH = 0x00004000 - BOOTLOADER_SIZE
   ram      (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00001000
 }
 

hw/bsp/samd11/boards/luna_d11/board.mk

@@ -38,6 +38,7 @@
 // Button
 #define BUTTON_PIN            PIN_PA14 // pin PB22
 #define BUTTON_STATE_ACTIVE   0
+#define BUTTON_PULL_MODE      GPIO_PULL_UP
 
 #ifdef __cplusplus
  }

hw/bsp/samd11/boards/samd11_xplained/board.h

@@ -78,7 +78,7 @@ void board_init(void)
 
   // Button init
   gpio_set_pin_direction(BUTTON_PIN, GPIO_DIRECTION_IN);
-  gpio_set_pin_pull_mode(BUTTON_PIN, GPIO_PULL_UP);
+  gpio_set_pin_pull_mode(BUTTON_PIN, BUTTON_PULL_MODE);
 
   /* USB Clock init
    * The USB module requires a GCLK_USB of 48 MHz ~ 0.25% clock

hw/bsp/samd11/family.c

@@ -2,6 +2,12 @@ CFLAGS += -D__SAMD21G18A__ -DCFG_EXAMPLE_VIDEO_READONLY
 
 LD_FILE = $(BOARD_PATH)/samd21g18a_flash.ld
 
+# Default bootloader size is now 2K, allow to specify other
+ifeq ($(BOOTLOADER_SIZE), )
+	BOOTLOADER_SIZE := 0x800
+endif
+LDFLAGS += -Wl,--defsym=BOOTLOADER_SIZE=$(BOOTLOADER_SIZE)
+
 # For flash-jlink target
 JLINK_DEVICE = ATSAMD21G18
 

hw/bsp/samd21/boards/luna_d21/board.h renamed to hw/bsp/samd21/boards/cynthion_d21/board.h

@@ -35,7 +35,7 @@ SEARCH_DIR(.)
 /* Memory Spaces Definitions */
 MEMORY
 {
-  rom      (rx)  : ORIGIN = 0x00000000 + 4K, LENGTH = 0x00040000 - 4K
+  rom      (rx)  : ORIGIN = 0x00000000 + BOOTLOADER_SIZE, LENGTH = 0x00040000 - BOOTLOADER_SIZE
   ram      (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008000
 }