feat(swan_r5): UF2 support, with UF2 family IDs assigned to stm32 chipsets.

Author: m-mcgowan

ports/stm/Makefile

@@ -302,11 +302,11 @@ $(BUILD)/firmware.hex: $(BUILD)/firmware.elf
 
 $(BUILD)/firmware.uf2: $(BUILD)/firmware.hex
 	$(ECHO) "Create $@"
-	$(PYTHON) $(TOP)/tools/uf2/utils/uf2conv.py -f 0x57755a57 -b $(BOOTLOADER_OFFSET) -c -o "$(BUILD)/firmware.uf2" $^
+	$(PYTHON) $(TOP)/tools/uf2/utils/uf2conv.py -f $(UF2_FAMILY_ID) -b $(BOOTLOADER_OFFSET) -c -o "$(BUILD)/firmware.uf2" $^
 
 flash: $(BUILD)/firmware.bin
 	$(ECHO) "Writing $< to the board"
-	dfu-util -a 0 --dfuse-address 0x08000000 -D $(BUILD)/firmware.bin
+	dfu-util -a 0 --dfuse-address $(BOOTLOADER_OFFSET) -D $(BUILD)/firmware.bin
 
 include $(TOP)/py/mkrules.mk
 

ports/stm/boards/swan_r5/mpconfigboard.mk

@@ -14,6 +14,7 @@ LD_DEFAULT = boards/STM32L4R5_default.ld
 # UF2 boot option
 LD_BOOT = boards/STM32L4R5_boot.ld
 UF2_OFFSET = 0x8010000
+UF2_BOOTLOADER ?= 1
 
 # Turn all of the below off while trying to get the thing to run
 # These modules are implemented in ports/<port>/common-hal:

ports/stm/mpconfigport.mk

@@ -8,6 +8,7 @@ ifeq ($(MCU_VARIANT),$(filter $(MCU_VARIANT),STM32F405xx STM32F407xx))
         CIRCUITPY_SDIOIO ?= 1
         # Number of USB endpoint pairs.
         USB_NUM_ENDPOINT_PAIRS = 4
+        UF2_FAMILY_ID ?= 0x6d0922fa
 endif
 
 ifeq ($(MCU_SERIES),F4)
@@ -25,6 +26,7 @@ ifeq ($(MCU_SERIES),F4)
         CIRCUITPY_ROTARYIO ?= 0
         CIRCUITPY_RTC ?= 0
         USB_NUM_ENDPOINT_PAIRS = 4
+        UF2_FAMILY_ID ?= 0x57755a57
 endif
 
 ifeq ($(MCU_SERIES),H7)
@@ -43,6 +45,7 @@ ifeq ($(MCU_SERIES),H7)
         CIRCUITPY_RTC ?= 0
 
         USB_NUM_ENDPOINT_PAIRS = 9
+        UF2_FAMILY_ID ?= 0x6db66082
 endif
 
 ifeq ($(MCU_SERIES),F7)
@@ -59,6 +62,7 @@ ifeq ($(MCU_SERIES),F7)
         CIRCUITPY_RTC ?= 0
 
         USB_NUM_ENDPOINT_PAIRS = 6
+        UF2_FAMILY_ID ?= 0x53b80f00
 endif
 
 ifeq ($(MCU_SERIES),L4)
@@ -77,6 +81,7 @@ ifeq ($(MCU_SERIES),L4)
         # This slide deck https://www.st.com/content/ccc/resource/training/technical/product_training/98/89/c8/6c/3e/e9/49/79/STM32L4_Peripheral_USB.pdf/files/STM32L4_Peripheral_USB.pdf/jcr:content/translations/en.STM32L4_Peripheral_USB.pdf
         # cites 16 endpoints, 8 endpoint pairs, while section 3.39 of the L4R5 datasheet states 6 endpoint pairs.
         USB_NUM_ENDPOINT_PAIRS = 6
+        UF2_FAMILY_ID ?= 0x00ff6919
 endif
 
 CIRCUITPY_PARALLELDISPLAY := 0