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atusb/fw/: SET_INTERFACE can now select among interfaces (changes user_setup)

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- ep0.c (ep0_init), usb/dfu.c (dfu_init): set user_setups[0] instead
  of user_setup
- usb/atu2.c (usb_poll): reset user_setup on bus reset
- usb/usb.h (user_setups), usb/usb.c (user_setups): array of
  interface-specific setup functions
- usb/usb.c (handle_setup): in SET_INTERFACE, select setup function
  from user_setups according to interface
- usb/usb.c (handle_setup): if user_setup is not set (e.g., the
  optional SET_INTERFACE was never issued), fall back to user_setups[0]
This commit is contained in:
Werner Almesberger 2011-06-10 17:12:57 -03:00
parent 4d4e132f0a
commit 89d13ce8f8
5 changed files with 24 additions and 8 deletions
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2
atusb/fw/ep0.c
View File

@ -209,5 +209,5 @@ static int my_setup(const struct setup_request *setup)
void ep0_init(void) void ep0_init(void)
{ {
user_setup = my_setup; user_setups[0] = my_setup;
} }

1
atusb/fw/usb/atu2.c
View File

@ -190,6 +190,7 @@ void usb_poll(void)
if (flags & (1 << EORSTI)) { if (flags & (1 << EORSTI)) {
if (user_reset) if (user_reset)
user_reset(); user_reset();
user_setup = NULL;
ep_init(); ep_init();
UDINT &= ~(1 << EORSTI); UDINT &= ~(1 << EORSTI);
} }

2
atusb/fw/usb/dfu.c
View File

@ -288,7 +288,7 @@ static void my_reset(void)
void dfu_init(void) void dfu_init(void)
{ {
user_setup = my_setup; user_setups[0] = my_setup;
user_get_descriptor = my_descr; user_get_descriptor = my_descr;
user_reset = my_reset; user_reset = my_reset;
} }

26
atusb/fw/usb/usb.c
View File

@ -36,6 +36,7 @@ extern void panic(void);
#endif #endif
int (*user_setup)(const struct setup_request *setup); int (*user_setup)(const struct setup_request *setup);
int (*user_setups[2])(const struct setup_request *setup);
int (*user_get_descriptor)(uint8_t type, uint8_t index, int (*user_get_descriptor)(uint8_t type, uint8_t index,
const uint8_t **reply, uint8_t *size); const uint8_t **reply, uint8_t *size);
void (*user_reset)(void); void (*user_reset)(void);
@ -135,10 +136,21 @@ int handle_setup(const struct setup_request *setup)
{ {
const uint8_t *interface_descriptor = const uint8_t *interface_descriptor =
config_descriptor+9; config_descriptor+9;
const uint8_t *p;
int i;
if (setup->wIndex != interface_descriptor[2] || i = 0;
setup->wValue != interface_descriptor[3]) for (p = interface_descriptor;
return 0; p != config_descriptor+config_descriptor[2];
p += p[0]) {
if (p[2] == setup->wIndex &&
p[3] == setup->wValue) {
user_setup = user_setups[i];
return 1;
}
i++;
}
return 0;
} }
break; break;
@ -156,9 +168,11 @@ int handle_setup(const struct setup_request *setup)
return 0; return 0;
default: default:
if (!user_setup) if (user_setup)
return 0; return user_setup(setup);
return user_setup(setup); if (user_setups[0])
return user_setups[0](setup);
return 0;
} }
return 1; return 1;

1
atusb/fw/usb/usb.h
View File

@ -133,6 +133,7 @@ extern const uint8_t config_descriptor[];
extern struct ep_descr eps[]; extern struct ep_descr eps[];
extern int (*user_setup)(const struct setup_request *setup); extern int (*user_setup)(const struct setup_request *setup);
extern int (*user_setups[2])(const struct setup_request *setup);
extern int (*user_get_descriptor)(uint8_t type, uint8_t index, extern int (*user_get_descriptor)(uint8_t type, uint8_t index,
const uint8_t **reply, uint8_t *size); const uint8_t **reply, uint8_t *size);
extern void (*user_reset)(void); extern void (*user_reset)(void);