AVR Bootloader (avrboot cleanup)
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1.2 KiB

#ifndef _MEGAxx4_H_
#define _MEGAxx4_H_
#ifndef UART_USE_SECOND
/* UART 0 */
#define UART_BAUD_HIGH UBRR0H
#define UART_BAUD_LOW UBRR0L
#define UART_STATUS UCSR0A
#define UART_TXREADY UDRE0
#define UART_RXREADY RXC0
#define UART_DOUBLE U2X0
#define UART_CTRL UCSR0B
#define UART_CTRL_DATA ((1<<TXEN0) | (1<<RXEN0))
#define UART_CTRL2 UCSR0C
#define UART_CTRL2_DATA ( (1<<UCSZ01) | (1<<UCSZ00))
#define UART_DATA UDR0
#else
/* UART 1 */
#define UART_BAUD_HIGH UBRR1H
#define UART_BAUD_LOW UBRR1L
#define UART_STATUS UCSR1A
#define UART_TXREADY UDRE1
#define UART_RXREADY RXC1
#define UART_DOUBLE U2X1
#define UART_CTRL UCSR1B
#define UART_CTRL_DATA ((1<<TXEN1) | (1<<RXEN1))
#define UART_CTRL2 UCSR1C
#define UART_CTRL2_DATA ( (1<<UCSZ11) | (1<<UCSZ10))
#define UART_DATA UDR1
#endif
#define WDT_OFF_SPECIAL
static inline void bootloader_wdt_off(void)
{
cli();
wdt_reset();
/* Clear WDRF in MCUSR */
MCUSR &= ~(1<<WDRF);
/* Write logical one to WDCE and WDE */
/* Keep old prescaler setting to prevent unintentional time-out */
WDTCSR |= (1<<WDCE) | (1<<WDE);
/* Turn off WDT */
WDTCSR = 0x00;
}
#endif // #ifndef _MEGA644_H_