specchioriflesso/USB_Host_Shield_2.0
1
Fork 0
mirror of https://github.com/felis/USB_Host_Shield_2.0.git synced 2024-03-22 11:31:26 +01:00
Code Issues Projects Releases Packages Wiki Activity

Don't call init if an error is returned

Browse source
This commit is contained in:
Kristian Sloth Lauszus 2013-10-08 18:07:36 +02:00
parent 332f56f46d
commit 7990c32ad6
1 changed files with 16 additions and 15 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

31
Usb.cpp
View file

@ -580,23 +580,24 @@ uint8_t USB::AttemptConfig(uint8_t driver, uint8_t parent, uint8_t port, bool lo
devConfig[parent]->ResetHubPort(port); devConfig[parent]->ResetHubPort(port);
} }
} }
rcode = devConfig[driver]->Init(parent, port, lowspeed); if (!rcode || rcode == USB_ERROR_CONFIG_REQUIRES_ADDITIONAL_RESET) {
if (rcode == hrJERR) { // Some devices returns this when plugged in - trying to initialize the device again usually works
delay(100);
devConfig[driver]->ConfigureDevice(parent, port, lowspeed); // Just ignore the returned value
rcode = devConfig[driver]->Init(parent, port, lowspeed); rcode = devConfig[driver]->Init(parent, port, lowspeed);
} if (rcode == hrJERR) { // Some devices returns this when plugged in - trying to initialize the device again usually works
if (rcode) { delay(100);
// Issue a bus reset, because the device may be in a limbo state devConfig[driver]->ConfigureDevice(parent, port, lowspeed); // Just ignore the returned value
if (parent == 0) { rcode = devConfig[driver]->Init(parent, port, lowspeed);
// Send a bus reset on the root interface. }
regWr(rHCTL, bmBUSRST); //issue bus reset if (rcode) {
delay(102); // delay 102ms, compensate for clock inaccuracy. // Issue a bus reset, because the device may be in a limbo state
} else { if (parent == 0) {
// reset parent port // Send a bus reset on the root interface.
devConfig[parent]->ResetHubPort(port); regWr(rHCTL, bmBUSRST); //issue bus reset
delay(102); // delay 102ms, compensate for clock inaccuracy.
} else {
// reset parent port
devConfig[parent]->ResetHubPort(port);
}
} }
} }
return rcode; return rcode;
} }