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Diffstat (limited to 'FAQ.md')
| -rw-r--r-- | FAQ.md | 6 |
1 files changed, 4 insertions, 2 deletions
@@ -181,8 +181,10 @@ Pressing any key during sleep should wake host. Arduino leonardo and micro have **ATMega32U4** and can be used for TMK, though Arduino bootloader may be a problem. -## Using PF4-7 pins of USB AVR(ATMega32U* or AT90USB*)? -You need to set JTD bit of MCUCR yourself to use PF4-7 as GPIO. Those pins are configured to serve JTAG function by default. If you are using Teensy this isn't needed. Teensy is shipped with JTAGEN fuse bit unprogrammed to disable the function. +## Using PF4-7 pins of USB AVR? +You need to set JTD bit of MCUCR yourself to use PF4-7 as GPIO. Those pins are configured to serve JTAG function by default. MCUs like ATMega*U* or AT90USB* are affeteced with this. + +If you are using Teensy this isn't needed. Teensy is shipped with JTAGEN fuse bit unprogrammed to disable the function. See this code. ``` |