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-rw-r--r--Makefile3
-rw-r--r--jump_bootloader.c35
-rw-r--r--jump_bootloader.h6
-rw-r--r--mykey.c12
-rw-r--r--usb_keyboard.h10
5 files changed, 63 insertions, 3 deletions
diff --git a/Makefile b/Makefile
index 7473d3c31..c9c668d41 100644
--- a/Makefile
+++ b/Makefile
@@ -51,7 +51,8 @@ SRC = $(TARGET).c \
usb_device.c \
usb_keyboard.c \
usb_debug.c \
- print.c
+ print.c \
+ jump_bootloader.c
# MCU name, you MUST set this to match the board you are using
diff --git a/jump_bootloader.c b/jump_bootloader.c
new file mode 100644
index 000000000..f60c3596a
--- /dev/null
+++ b/jump_bootloader.c
@@ -0,0 +1,35 @@
+// this code from:
+// http://www.pjrc.com/teensy/jump_to_bootloader.html
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+
+void jump_bootloader() {
+ cli();
+ // disable watchdog, if enabled
+ // disable all peripherals
+ UDCON = 1;
+ USBCON = (1<<FRZCLK); // disable USB
+ UCSR1B = 0;
+ _delay_ms(5);
+#if defined(__AVR_AT90USB162__) // Teensy 1.0
+ DDRB = 0; DDRC = 0; DDRD = 0;
+ TIMSK0 = 0; TIMSK1 = 0;
+ asm volatile("jmp 0x1F00");
+#elif defined(__AVR_ATmega32U4__) // Teensy 2.0
+ DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0;
+ TIMSK0 = 0; TIMSK1 = 0; TIMSK3 = 0; TIMSK4 = 0;
+ ADCSRA = 0;
+ asm volatile("jmp 0x3F00");
+#elif defined(__AVR_AT90USB646__) // Teensy++ 1.0
+ DDRA = 0; DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0;
+ TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; TIMSK3 = 0;
+ ADCSRA = 0;
+ asm volatile("jmp 0x7E00");
+#elif defined(__AVR_AT90USB1286__) // Teensy++ 2.0
+ DDRA = 0; DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0;
+ TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; TIMSK3 = 0;
+ ADCSRA = 0;
+ asm volatile("jmp 0xFE00");
+#endif
+}
diff --git a/jump_bootloader.h b/jump_bootloader.h
new file mode 100644
index 000000000..9e923e8ab
--- /dev/null
+++ b/jump_bootloader.h
@@ -0,0 +1,6 @@
+#ifndef JUMP_BOOTLOADER_H
+#define JUMP_BOOTLOADER_H 1
+
+void jump_bootloader(void);
+
+#endif
diff --git a/mykey.c b/mykey.c
index 317629848..dcb0852ec 100644
--- a/mykey.c
+++ b/mykey.c
@@ -34,6 +34,7 @@
#include "print.h"
#include "matrix.h"
#include "keymap.h"
+#include "jump_bootloader.h"
#define LED_CONFIG (DDRD |= (1<<6))
#define LED_ON (PORTD &= ~(1<<6))
@@ -111,6 +112,13 @@ int main(void)
}
}
+ // run bootloader when 4 left modifier keys down
+ if (keyboard_modifier_keys == (MOD_LCTRL | MOD_LSHIFT | MOD_LALT | MOD_LGUI)) {
+ print("jump to bootloader...\n");
+ _delay_ms(1000);
+ jump_bootloader();
+ }
+
if (key_index > 6) {
//Rollover
}
@@ -128,7 +136,7 @@ int main(void)
// print matrix state for debug
if (modified) {
- print("r/c 01234567\n");
+ print("\nr/c 01234567\n");
for (row = 0; row < MATRIX_ROWS; row++) {
phex(row); print(": ");
pbin_reverse(matrix[row]);
@@ -159,6 +167,6 @@ ISR(TIMER0_OVF_vect)
idle_count++;
if (idle_count > 61 * 8) {
idle_count = 0;
- //print("Timer Event :)\n");
+ print(".");
}
}
diff --git a/usb_keyboard.h b/usb_keyboard.h
index 3a9e51ce4..cd8ec4a9d 100644
--- a/usb_keyboard.h
+++ b/usb_keyboard.h
@@ -10,6 +10,16 @@
#define KEYBOARD_SIZE 8
#define KEYBOARD_BUFFER EP_DOUBLE_BUFFER
+// modifier bits
+#define MOD_LCTRL (1<<0)
+#define MOD_LSHIFT (1<<1)
+#define MOD_LALT (1<<2)
+#define MOD_LGUI (1<<3)
+#define MOD_RCTRL (1<<4)
+#define MOD_RSHIFT (1<<5)
+#define MOD_RALT (1<<6)
+#define MOD_RGUI (1<<7)
+
extern uint8_t keyboard_modifier_keys;
extern uint8_t keyboard_keys[6];