Arduino Leonardo and micro have **ATMega32U4** and can be used for TMK, though Arduino bootloader may be a problem.
+## Enabling JTAG
-## 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 affected with this.
+By default, the JTAG debugging interface is disabled as soon as the keyboard starts up. JTAG-capable MCUs come from the factory with the `JTAGEN` fuse set, and it takes over certain pins of the MCU that the board may be using for the switch matrix, LEDs, etc.
-If you are using Teensy this isn't needed. Teensy is shipped with JTAGEN fuse bit unprogrammed to disable the function.
+If you would like to keep JTAG enabled, just add the following to your `config.h`:
-See this code.
+```c
+#define NO_JTAG_DISABLE
```
- // JTAG disable for PORT F. write JTD bit twice within four cycles.
- MCUCR |= (1<<JTD);
- MCUCR |= (1<<JTD);
-```
-https://github.com/tmk/tmk_keyboard/blob/master/keyboard/hbkb/matrix.c#L67
-
-And read **26.5.1 MCU Control Register – MCUCR** of ATMega32U4 datasheet.
-
## Adding LED Indicators of Lock Keys
You need your own LED indicators for CapsLock, ScrollLock and NumLock? See this post.
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。
#ifdef UART_RGB_ENABLE
uart_rgb_init();
#endif
- // disable JTAG
- MCUCR = _BV(JTD);
- MCUCR = _BV(JTD);
// 85 REST
DDRD |= _BV(PD7);
// put your keyboard start-up code here
// runs once when the firmware starts up
matrix_init_user();
-
- // JTAG disable for PORT F. write JTD bit twice within four cycles.
- MCUCR |= (1<<JTD);
- MCUCR |= (1<<JTD);
};
void led_set_kb(uint8_t usb_led) {
// runs once when the firmware starts up
matrix_init_user();
led_init_ports();
-
- // JTAG disable for PORT F. write JTD bit twice within four cycles.
- MCUCR |= (1<<JTD);
- MCUCR |= (1<<JTD);
}
// runs once when the firmware starts up
matrix_init_user();
led_init_ports();
-
- // JTAG disable for PORT F. write JTD bit twice within four cycles.
- MCUCR |= (1<<JTD);
- MCUCR |= (1<<JTD);
}
void matrix_init(void)
{
- // disable JTAG
- MCUCR = (1<<JTD);
- MCUCR = (1<<JTD);
-
unselect_rows();
init_cols();
}
void matrix_init(void) {
-
- // To use PORTF disable JTAG with writing JTD bit twice within four cycles.
- #if (defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__) || defined(__AVR_ATmega32U4__))
- MCUCR |= _BV(JTD);
- MCUCR |= _BV(JTD);
- #endif
-
// initialize row and col
unselect_rows();
init_cols();
void rn42_init(void)
{
- // JTAG disable for PORT F. write JTD bit twice within four cycles.
- MCUCR |= (1<<JTD);
- MCUCR |= (1<<JTD);
-
// PF7: BT connection control(high: connect, low: disconnect)
rn42_autoconnect();
void matrix_init(void)
{
- // To use PORTF disable JTAG with writing JTD bit twice within four cycles.
- MCUCR |= (1<<JTD);
- MCUCR |= (1<<JTD);
-
// initialize row and col
setup_io_pins();
setup_leds();
void matrix_init(void)
{
- // disable JTAG
- MCUCR = (1<<JTD);
- MCUCR = (1<<JTD);
-
unselect_rows();
init_cols();
#include "launchpad.h"
void matrix_init_kb(void) {
-
- // JTAG disable for PORT F. write JTD bit twice within four cycles.
- MCUCR |= (1<<JTD);
- MCUCR |= (1<<JTD);
-
// Undo init of RX LED, we use that port currently
//DDRB &= ~(1<<0);
matrix_init_user();
-};
\ No newline at end of file
+};
#pragma once
-#define DISABLE_JTAG // The keyboard uses PF4 and PF7, which are used by JTAG.
#include "lets_split.h"
//#define EE_HANDS
#define I2C_MASTER_LEFT
//#define I2C_MASTER_RIGHT
-
-#define DISABLE_JTAG
}
void matrix_init(void) {
-
- /* To use PORTF disable JTAG with writing JTD bit twice within four cycles. */
- #if (defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__) || defined(__AVR_ATmega32U4__))
- MCUCR |= _BV(JTD);
- MCUCR |= _BV(JTD);
- #endif
-
mcp23018_status = true;
/* initialize row and col */
void matrix_init(void)
{
-#ifdef DISABLE_JTAG
- // JTAG disable for PORT F. write JTD bit twice within four cycles.
- MCUCR |= (1<<JTD);
- MCUCR |= (1<<JTD);
-#endif
-
// initialize row and col
#if (DIODE_DIRECTION == COL2ROW)
unselect_rows();
#ifndef REV1_H
#define REV1_H
-#define DISABLE_JTAG // The keyboard uses PF4, PF5 and PF7, which are used by JTAG.
#define EE_HANDS // This isn't optional for the vitamins included
#include QMK_KEYBOARD_H
#endif
void disable_jtag(void) {
-// To use PORTF disable JTAG with writing JTD bit twice within four cycles.
-#if (defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__) || defined(__AVR_ATmega32U4__))
+// To use PF4-7 (PC2-5 on ATmega32A), disable JTAG by writing JTD bit twice within four cycles.
+#if (defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || \
+ defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__) || \
+ defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__))
MCUCR |= _BV(JTD);
MCUCR |= _BV(JTD);
+#elif defined(__AVR_ATmega32A__)
+ MCUCSR |= _BV(JTD);
+ MCUCSR |= _BV(JTD);
#endif
}
* FIXME: needs doc
*/
void keyboard_setup(void) {
+#ifndef NO_JTAG_DISABLE
disable_jtag();
+#endif
matrix_setup();
keyboard_pre_init_kb();
}
.time = (timer_read() | 1) \
}
-void disable_jtag(void);
-
/* it runs once at early stage of startup before keyboard_init. */
void keyboard_setup(void);
/* it runs once after initializing host side protocol, debug and MCU peripherals. */
projects / qmk_firmware.git / commitdiff