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Added USB (specifically CDC-ACM) support

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ksb 2007-09-01 10:00:35 +00:00
parent 3af69d229a
commit 9d5a2aed80
18 changed files with 2079 additions and 4 deletions
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52
cpu/at91sam7s/usb/usb-interrupt.c Normal file
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#include <AT91SAM7S64.h>
#include <interrupt-utils.h>
#include <usb-interrupt.h>
#include <usb-proto.h>
#include <stdio.h>
static void
usb_int_safe (void) __attribute__((noinline));
static void
usb_int_safe (void)
{
unsigned int int_status;
/* putchar('*'); */
int_status = *AT91C_UDP_ISR & *AT91C_UDP_IMR;
if (int_status & (AT91C_UDP_EP1 | AT91C_UDP_EP2 | AT91C_UDP_EP3)) {
usb_epx_int();
} else if (int_status & AT91C_UDP_ENDBUSRES) {
usb_reset();
*AT91C_UDP_ICR = AT91C_UDP_ENDBUSRES;
} else if (int_status & AT91C_UDP_RXSUSP) {
/* puts("Suspend"); */
*AT91C_UDP_ICR = AT91C_UDP_RXSUSP;
} else if (int_status & AT91C_UDP_RXRSM) {
/* puts("Resume"); */
*AT91C_UDP_ICR = AT91C_UDP_RXRSM;
} else if (int_status & AT91C_UDP_SOFINT) {
/* puts("SOF"); */
*AT91C_UDP_ICR = AT91C_UDP_SOFINT;
} else if (int_status & AT91C_UDP_WAKEUP) {
/* puts("Wakeup"); */
*AT91C_UDP_ICR = AT91C_UDP_WAKEUP;
} else if (int_status & AT91C_UDP_EP0) {
usb_ep0_int();
} else {
puts("Other USB interrupt");
}
/* putchar('<'); */
}
void NACKEDFUNC
usb_int (void)
{
ISR_STORE();
ISR_ENABLE_NEST();
usb_int_safe();
ISR_DISABLE_NEST();
*AT91C_AIC_EOICR = 0;
ISR_RESTORE();
}