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| author |  Ryan Ascheman <rascheman@groupon.com> | 2016-10-18 12:42:02 -0700 |
|---|---|---|
| committer | Ryan Ascheman <rascheman@groupon.com> | 2016-10-18 12:42:02 -0700 |
| commit | 55b8b8477cc6aee82dfe6792eea4e589cac433d5 (patch) | |
| tree | ce5bfbd1b0ee59dbffdc2044bcf90c89614392ed /doc/FUSE.txt | |
| parent | d1c70328f8d8ded6ce1e5422b468fc41ef315e7d (diff) | |
| parent | 04df74f6360464661bcc1e6794e9fd3549084390 (diff) | |
| download | qmk_firmware-55b8b8477cc6aee82dfe6792eea4e589cac433d5.tar.gz | |
Merge remote-tracking branch 'upstream/master'
* upstream/master: (1239 commits)
Update ez.c
removes planck/rev3 temporarily
Move hand_swap_config to ez.c, removes error for infinity
Update Makefile
ergodox: Update algernon's keymap to v1.9
Added VS Code dir to .gitignore
Support the Pegasus Hoof controller.
[Jack & Erez] Simplifies and documents TO
add readme
use wait_ms instead of _delay_ms
add messenger
init keymap
Add example keymap
Adding whiskey_tango_foxtrot_capslock ergodox keymap
Unicode map framework. Allow unicode up to 0xFFFFF using separate mapping table
CIE 1931 dim curve
Apply the dim curve to the RGB output
Update the Cluecard readme files
Tune snake and knight intervals for Cluecard
Tunable RGB light intervals
...
Diffstat (limited to 'doc/FUSE.txt')
| -rw-r--r-- | doc/FUSE.txt | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/doc/FUSE.txt b/doc/FUSE.txt new file mode 100644 index 000000000..99ddd2d18 --- /dev/null +++ b/doc/FUSE.txt @@ -0,0 +1,50 @@ +Atmega32u4 Fuse/Lock Bits for Planck/Atomic/Preonic +========================= + + Low Fuse: 0x5E + High Fuse: 0x99 + Extended Fuse: 0xF3 + Lock Byte: 0xFF + + +ATMega168P Fuse/Lock Bits +========================= +This configuration is from usbasploader's Makefile. + + HFUSE 0xD6 + LFUSE 0xDF + EFUSE 0x00 + LOCK 0x3F(intact) + +#--------------------------------------------------------------------- +# ATMega168P +#--------------------------------------------------------------------- +# Fuse extended byte: +# 0x00 = 0 0 0 0 0 0 0 0 <-- BOOTRST (boot reset vector at 0x1800) +# \+/ +# +------- BOOTSZ (00 = 2k bytes) +# Fuse high byte: +# 0xd6 = 1 1 0 1 0 1 1 0 +# ^ ^ ^ ^ ^ \-+-/ +# | | | | | +------ BODLEVEL 0..2 (110 = 1.8 V) +# | | | | + --------- EESAVE (preserve EEPROM over chip erase) +# | | | +-------------- WDTON (if 0: watchdog always on) +# | | +---------------- SPIEN (allow serial programming) +# | +------------------ DWEN (debug wire enable) +# +-------------------- RSTDISBL (reset pin is enabled) +# Fuse low byte: +# 0xdf = 1 1 0 1 1 1 1 1 +# ^ ^ \ / \--+--/ +# | | | +------- CKSEL 3..0 (external >8M crystal) +# | | +--------------- SUT 1..0 (crystal osc, BOD enabled) +# | +------------------ CKOUT (if 0: Clock output enabled) +# +-------------------- CKDIV8 (if 0: divide by 8) + + +# Lock Bits +# 0x3f = - - 1 1 1 1 1 1 +# \ / \-/ \-/ +# | | +----- LB 2..1 (No memory lock features enabled) +# | +--------- BLB0 2..1 (No restrictions for SPM or LPM accessing the Application section) +# +--------------- BLB1 2..1 (No restrictions for SPM or LPM accessing the Boot Loader section) + |