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| author | Dean Camera <dean@fourwalledcubicle.com> | 2009-02-26 05:48:47 +0000 |
|---|---|---|
| committer | Dean Camera <dean@fourwalledcubicle.com> | 2009-02-26 05:48:47 +0000 |
| commit | 99145a8d7c88d9af065cfb7f5e8507d5b65ff811 (patch) | |
| tree | 80b407b9114c1fe6727b40e7b7e0caf6fefc0ea1 /Demos/Mouse | |
| parent | fa456ce531b75e2dd3c7c0ecb971e3ede36f5d35 (diff) | |
| download | lufa-99145a8d7c88d9af065cfb7f5e8507d5b65ff811.tar.gz lufa-99145a8d7c88d9af065cfb7f5e8507d5b65ff811.tar.bz2 lufa-99145a8d7c88d9af065cfb7f5e8507d5b65ff811.zip | |
Makefiles and library modified to add a new F_CLOCK constant to give the unprescaled master input clock frequency, so that the correct PLL mask can be determined even when the CPU (F_CPU) clock rate is prescaled outside the normal input range of the PLL.
Started to clean up the AVRISP Programmer project code, donated by Opendous Inc.
Diffstat (limited to 'Demos/Mouse')
| -rw-r--r-- | Demos/Mouse/makefile | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/Demos/Mouse/makefile b/Demos/Mouse/makefile index 329423f5d..0f20dca63 100644 --- a/Demos/Mouse/makefile +++ b/Demos/Mouse/makefile @@ -90,6 +90,20 @@ BOARD = USBKEY F_CPU = 8000000
+# Input clock frequency.
+# This will define a symbol, F_CLOCK, in all source code files equal to the
+# input clock frequency (before any prescaling is performed). This value may
+# differ from F_CPU if prescaling is used on the latter, and is required as the
+# raw input clock is fed directly to the PLL sections of the AVR for high speed
+# clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
+# at the end, this will be done automatically to create a 32-bit value in your
+# source code.
+#
+# If no clock division is performed on the input clock inside the AVR (via the
+# CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
+F_CLOCK = 8000000
+
+
# Output format. (can be srec, ihex, binary)
FORMAT = ihex
@@ -159,8 +173,9 @@ CSTANDARD = -std=gnu99 # Place -D or -U options here for C sources
-CDEFS = -DF_CPU=$(F_CPU)UL -DBOARD=BOARD_$(BOARD) -DUSE_NONSTANDARD_DESCRIPTOR_NAMES -DNO_STREAM_CALLBACKS
-CDEFS += -DUSB_DEVICE_ONLY -DUSE_STATIC_OPTIONS="(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)"
+CDEFS = -DF_CPU=$(F_CPU)UL -DF_CLOCK=$(F_CLOCK)UL -DBOARD=BOARD_$(BOARD)
+CDEFS += -DUSE_NONSTANDARD_DESCRIPTOR_NAMES -DNO_STREAM_CALLBACKS -DUSB_DEVICE_ONLY
+CDEFS += -DUSE_STATIC_OPTIONS="(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)"
# Place -D or -U options here for ASM sources
|