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-rw-r--r--Bootloaders/CDC/makefile6
1 files changed, 4 insertions, 2 deletions
diff --git a/Bootloaders/CDC/makefile b/Bootloaders/CDC/makefile
index 3e43a168d..3b2e2db0b 100644
--- a/Bootloaders/CDC/makefile
+++ b/Bootloaders/CDC/makefile
@@ -86,11 +86,13 @@ F_CLOCK = $(F_CPU)
# Starting byte address of the bootloader, as a byte address - computed via the formula
-# BOOT_START = ((TOTAL_FLASH_BYTES - BOOTLOADER_SECTION_SIZE_BYTES) * 1024)
+# BOOT_START = ((FLASH_SIZE_KB - BOOT_SECTION_SIZE_KB) * 1024)
#
# Note that the bootloader size and start address given in AVRStudio is in words and not
# bytes, and so will need to be doubled to obtain the byte address needed by AVR-GCC.
-BOOT_START = 0x1E000
+FLASH_SIZE_KB = 128
+BOOT_SECTION_SIZE_KB = 4
+BOOT_START = 0x$(shell echo "obase=16; ($(FLASH_SIZE_KB) - $(BOOT_SECTION_SIZE_KB)) * 1024" | bc)
# Output format. (can be srec, ihex, binary)