int main() {
//Initialize libdlo, claim device and get current mode
dlo_init_t initFlags;
dlo_retcode_t err = dlo_init(initFlags);
if( err != dlo_ok ) {
printf("Failed to initialize DisplayLink library: %s\n", dlo_strerror(err));
return 1;
}
dlo_claim_t claimFlags;
dlo_dev_t dev = dlo_claim_first_device(claimFlags, 5000); //dont use dlo_claim_default_device because semihost wont get any argc/argv
if( !dev ) {
printf("Failed to claim DisplayLink device\n");
goto end;
}
dlo_mode_t* displayMode = dlo_get_mode(dev);
if( 0 ) { //activate to set display to 640x480
dlo_mode_t mode = { .view = {.width = 640, .height = 480, .bpp = displayMode->view.bpp, .base = displayMode->view.base}, .refresh = 0 };
err = dlo_set_mode(dev, &mode);
if( err != dlo_ok ) {
printf("Failed to set mode: %s\n", dlo_strerror(err));
goto end;
}
}
DisplayLinkAdapter::DisplayLinkAdapter() {
dlo_init_t ini_flags = { 0 };
dlo_claim_t cnf_flags = { 0 };
OO_ERR(dlo_init(ini_flags));
uid = dlo_claim_first_device(cnf_flags, 0);
if (!uid) throw NoDisplayLinkFound();
setPreferredMode();
}