Makefiles and library modified to add a new F_CLOCK constant to give the unprescaled...

[pub/USBasp.git] / Bootloaders / DFU / makefile

diff --git a/Bootloaders/DFU/makefile b/Bootloaders/DFU/makefile
index 5a8e4ee..5a26b7e 100644 (file)
--- a/Bootloaders/DFU/makefile
+++ b/Bootloaders/DFU/makefile
@@ -90,6 +90,20 @@ BOARD  = USBKEY
 F_CPU = 8000000\r
 \r
 \r
+# Input clock frequency.\r
+#     This will define a symbol, F_CLOCK, in all source code files equal to the \r
+#     input clock frequency (before any prescaling is performed). This value may\r
+#     differ from F_CPU if prescaling is used on the latter, and is required as the\r
+#     raw input clock is fed directly to the PLL sections of the AVR for high speed\r
+#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'\r
+#     at the end, this will be done automatically to create a 32-bit value in your\r
+#     source code.\r
+#\r
+#     If no clock division is performed on the input clock inside the AVR (via the\r
+#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.\r
+F_CLOCK = 8000000\r
+\r
+\r
 # Output format. (can be srec, ihex, binary)\r
 FORMAT = ihex\r
 \r
@@ -162,10 +176,12 @@ BOOT_START = 0x1E000
 \r
 \r
 # Place -D or -U options here for C sources\r
-CDEFS  = -DF_CPU=$(F_CPU)UL -DBOARD=BOARD_$(BOARD) -DUSE_NONSTANDARD_DESCRIPTOR_NAMES -DSTATIC_ENDPOINT_CONFIGURATION\r
-CDEFS += -DUSB_DEVICE_ONLY -DUSE_STATIC_OPTIONS="(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)"\r
-CDEFS += -DUSE_RAM_DESCRIPTORS -DBOOT_START_ADDR=$(BOOT_START)UL -DFIXED_CONTROL_ENDPOINT_SIZE=32 -DUSE_SINGLE_DEVICE_CONFIGURATION\r
-CDEFS += -DNO_CLEARSET_FEATURE_REQUEST\r
+CDEFS  = -DF_CPU=$(F_CPU)UL -DF_CLOCK=$(F_CLOCK)UL -DBOARD=BOARD_$(BOARD)\r
+CDEFS += -DUSB_DEVICE_ONLY -DUSE_NONSTANDARD_DESCRIPTOR_NAMES -DNO_CLEARSET_FEATURE_REQUEST\r
+CDEFS += -DSTATIC_ENDPOINT_CONFIGURATION -DFIXED_CONTROL_ENDPOINT_SIZE=32\r
+CDEFS += -DUSE_STATIC_OPTIONS="(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)"\r
+CDEFS += -DUSE_RAM_DESCRIPTORS -DBOOT_START_ADDR=$(BOOT_START)UL -DUSE_SINGLE_DEVICE_CONFIGURATION\r
+\r
 \r
 # Place -D or -U options here for ASM sources\r
 ADEFS = -DF_CPU=$(F_CPU)\r