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2.0 usb #189

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merged 2 commits into from Feb 24, 2021
Merged

2.0 usb #189

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47be4b8
2.0 usb
bradjc Feb 22, 2021
2c29a3d
usb: use driver_exists function
bradjc Feb 23, 2021
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19 changes: 16 additions & 3 deletions libtock/usb.c
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@@ -1,15 +1,28 @@
#include "usb.h"

int usb_exists(void) {
return command(DRIVER_NUM_USB, 0, 0, 0) >= 0;
return driver_exists(DRIVER_NUM_USB);
}

int usb_subscribe(subscribe_cb callback, void *ud) {
return subscribe(DRIVER_NUM_USB, 0, callback, ud);
subscribe_return_t sval = subscribe2(DRIVER_NUM_USB, 0, callback, ud);
if (sval.success) {
return 0;
} else {
return tock_error_to_rcode(sval.error);
}
}

int usb_enable_and_attach_async(void) {
return command(DRIVER_NUM_USB, 1, 0, 0);
syscall_return_t com = command2(DRIVER_NUM_USB, 1, 0, 0);
if (com.type == TOCK_SYSCALL_SUCCESS) {
return TOCK_SUCCESS;
} else if (com.type > TOCK_SYSCALL_SUCCESS) {
// Returned an incorrect success code
return TOCK_FAIL;
} else {
return tock_error_to_rcode(com.data[0]);
}
}

struct data {
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