qi-hardware/ben-wpan
1
0
Fork 0
mirror of git://projects.qi-hardware.com/ben-wpan.git synced 2024-12-23 09:02:25 +02:00
Code

atudb/fw: disable the UART in ATUSB_GPIO

Browse Source 
- board.c (gpio): split GPIO setup and probing
- board.c (gpio): disable the UART while probing GPIOs
This commit is contained in:
Werner Almesberger 2011-06-05 18:27:40 -03:00
parent d1dd611d1e
commit e6f7d85e8a
1 changed files with 22 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
atusb/fw/board.c
View File

@ -172,30 +172,43 @@ int gpio(uint8_t port, uint8_t data, uint8_t dir, uint8_t mask, uint8_t *res)
case 1:
DDRB = (DDRB & ~mask) | dir;
PORTB = (PORTB & ~mask) | data;
_delay_ms(1);
break;
case 2:
DDRC = (DDRC & ~mask) | dir;
PORTC = (PORTC & ~mask) | data;
break;
case 3:
DDRD = (DDRD & ~mask) | dir;
PORTD = (PORTD & ~mask) | data;
break;
default:
return 0;
}
/* disable the UART so that we can meddle with these pins as well. */
UCSR1B = 0;
_delay_ms(1);
switch (port) {
case 1:
res[0] = PINB;
res[1] = PORTB;
res[2] = DDRB;
break;
case 2:
DDRC = (DDRC & ~mask) | dir;
PORTC = (PORTC & ~mask) | data;
_delay_ms(1);
res[0] = PINC;
res[1] = PORTC;
res[2] = DDRC;
break;
case 3:
DDRD = (DDRD & ~mask) | dir;
PORTD = (PORTD & ~mask) | data;
_delay_ms(1);
res[0] = PIND;
res[1] = PORTD;
res[2] = DDRD;
break;
default:
return 0;
}
spi_init();
return 1;
}