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Add compile error if too many endpoints are defined for the ATmega32U4.

This commit is contained in:
Joe Wasson 2017-08-19 20:35:41 -07:00 committed by Jack Humbert
parent fc70c9ac9e
commit bdc0880ca5
2 changed files with 3 additions and 2 deletions
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2
docs/stenography.md
View File

@ -30,7 +30,7 @@ GeminiPR encodes 42 keys into a 6-byte packet. While TX Bolt contains everything
## Configuring QMK for Steno
Firstly, enable steno in your keymap's Makefile. You should also diable mousekeys to prevent conflicts.
Firstly, enable steno in your keymap's Makefile. You may also need disable mousekeys, extra keys, or another USB endpoint to prevent conflicts. The builtin USB stack for some processors only supports a certain number of USB endpoints and the virtual serial port needed for steno fills 3 of them.
```Makefile
STENO_ENABLE = yes

3
tmk_core/protocol/lufa/descriptor.h
View File

@ -238,7 +238,8 @@ typedef struct
# define CDC_OUT_EPNUM MIDI_STREAM_OUT_EPNUM
#endif
#if defined(__AVR_ATmega32U2__) && CDC_OUT_EPNUM > 4
#if (defined(__AVR_ATmega32U2__) && CDC_OUT_EPNUM > 4) || \
(defined(__AVR_ATmega32U4__) && CDC_OUT_EPNUM > 6)
# error "Endpoints are not available enough to support all functions. Remove some in Makefile.(MOUSEKEY, EXTRAKEY, CONSOLE, NKRO, MIDI, SERIAL)"
#endif