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authortmk <nobody@nowhere>2012-06-30 14:44:14 +0900
committertmk <nobody@nowhere>2012-06-30 14:44:14 +0900
commit6d79e6579f1b769f3547856b8af56bd357580adf (patch)
tree68e235f3802d21ac40541446c2c23fdbbeb5c18f /common
parent2c5d3ac76f0ef3c72aa0416aef8b775864b50eb1 (diff)
Add support of USBasp bootloader.
Diffstat (limited to 'common')
-rw-r--r--common/bootloader.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/common/bootloader.c b/common/bootloader.c
index e45295cd5f..612b949648 100644
--- a/common/bootloader.c
+++ b/common/bootloader.c
@@ -24,12 +24,22 @@
void bootloader_jump(void) {
cli();
+
+ //
+ //Teensy
+ //
+#if defined(__AVR_AT90USB162__) || defined(__AVR_ATmega32U4__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
// disable watchdog, if enabled
// disable all peripherals
UDCON = 1;
USBCON = (1<<FRZCLK); // disable USB
UCSR1B = 0;
_delay_ms(5);
+#else
+ // This makes custom USBasploader come up.
+ MCUSR = 0;
+#endif
+
#if defined(__AVR_AT90USB162__)
EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0;
TIMSK0 = 0; TIMSK1 = 0; UCSR1B = 0;
@@ -52,6 +62,26 @@ void bootloader_jump(void) {
PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
#endif
+
+ //
+ //USBasp
+ //
+#if defined(__AVR_ATmega168__) || defined(__AVR_ATmega168P__) || defined(__AVR_ATmega328P)
+ // This makes custom USBasploader come up.
+ MCUSR = 0;
+
+ // initialize ports
+ PORTB = 0; PORTC= 0; PORTD = 0;
+ DDRB = 0; DDRC= 0; DDRD = 0;
+
+ // disable interrupts
+ EIMSK = 0; EECR = 0; SPCR = 0;
+ ACSR = 0; SPMCSR = 0; WDTCSR = 0; PCICR = 0;
+ TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0;
+ ADCSRA = 0; TWCR = 0; UCSR0B = 0;
+#endif
+
+
// start Bootloader
((void (*)(void))BOOTLOADER_START)();
}