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Remove superfluous JTAG disable code (#6445)

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* Remove superfluous JTAG disable code

* 32A has differently named register

* Accidentally some operators

* 32A also has different JTAG pins

* Wrap disable_jtag() in an ifndef

* Document this new define

* Rename the define, it conflicts with a LUFA thing

Also, move the ifndef wrapping to the call in keyboard_setup()
This commit is contained in:
fauxpark 2019-08-21 15:18:52 +10:00 • committed by Drashna Jaelre
parent 977c316eb1
commit f2c179de58
19 changed files with 15 additions and 94 deletions
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17
docs/zh-cn/faq_debug.md
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@ -173,23 +173,6 @@ EXTRAKEY_ENABLE = yes # 音频控制和系统控制
Arduino Leonardo和micro使用**ATMega32U4**，该芯片TMK可用，但Arduino的bootloader会导致问题。
## 在USB AVR使用PF4-7针脚?
你要置位MCUCR寄存器JTD位来将PF4-7设置为GPIO。这些针脚默认是JTAG功能。 像ATMega*U* or AT90USB*这样的MCU会受影响。
如果是用Teensy的话就不需要了。Tennsy自带JTAGEN位未编程来失能该功能。
<!--翻译问题：上句可能有错，原文为：Teensy is shipped with JTAGEN fuse bit unprogrammed to disable the function. -->
代码如下。
```
// F接口JTAG失能。在四个周期内写入两次JTD位。
MCUCR |= (1<<JTD);
MCUCR |= (1<<JTD);
```
https://github.com/tmk/tmk_keyboard/blob/master/keyboard/hbkb/matrix.c#L67
阅读ATMega32U4的datasheet中的**26.5.1 MCU Control Register – MCUCR**。
## 为锁定键添加指示灯
你要自制CapsLock, ScrollLock 和 NumLock指示灯？见下文。