GPIO Behavior During Boot-up and Redeploy
During startup or configuration changes, Q SYS GPIO devices may briefly toggle their output states. Once initialization is complete, all outputs return to their defined states in the design.Q-SYS device GPIO output states are undefined during boot-up and design redeploy. In the following table, "While On" and "While Off" indicate the button setting as defined in the running design file. During a reboot or redeploy, the setting may toggle depending on the GPIO type before returning to the defined setting after the design starts running. Bold text indicates a temporary GPIO setting during boot-up and redeploy.
|
GPIO Type |
While On |
While Off |
|---|---|---|
|
Digital Output |
Stays On |
Toggles to On |
|
Open Collector |
Toggles to Off |
Stays Off |
|
Raw |
Stays On |
Toggles to On |
|
GPIO Type |
While On |
While Off |
|---|---|---|
|
Digital Output |
Toggles to Off |
Stays Off |
|
Open Collector |
Stays On |
Toggles to On |
|
Raw |
Stays On |
Toggles to On |
|
GPIO Type |
While On |
While Off |
|---|---|---|
|
Digital Output |
Stays On |
Toggles to On |
|
GPIO Type |
While On |
While Off |
|---|---|---|
|
Digital Output |
Stays On |
Stays Off |
|
GPIO Type |
While On |
While Off |
|---|---|---|
|
Digital Output |
Stays On |
Toggles to On |
|
GPIO Type |
While On |
While Off |
|---|---|---|
|
Digital Output |
Stays On |
Toggles to On |
|
GPIO Type |
While On |
While Off |
|---|---|---|
|
Digital Output |
Stays On |
Stays Off |
|
Open Collector |
Stays On |
Stays Off |
|
Raw |
Stays On |
Stays Off |
Note: The Core 8 Flex and I/O-8 Flex GPIO output position persists during boot-up and redeploy.
|
GPIO Type |
While On |
While Off |
|---|---|---|
|
Digital Output |
Stays On |
Stays Off |
|
Open Collector |
Stays On |
Stays Off |
|
Raw |
Stays On |
Stays Off |
Note: The Core 110f GPIO output setting persists during boot-up and redeploy.
|
GPIO Type |
While On |
While Off |
|---|---|---|
|
Digital Output |
Stays On |
Stays Off |
|
Open Collector |
Stays On |
Stays Off |
|
Raw |
Stays On |
Stays Off |
|
GPIO Type |
While On |
While Off |
|---|---|---|
|
Digital Output |
Toggles to Off |
Stays Off |
|
Open Collector |
Stays On |
Toggles to On |
|
Raw |
Toggles to Off |
Stays Off |
|
GPIO Type |
While On |
While Off |
|---|---|---|
|
Digital Output |
Stays On |
Toggles to On |
|
Open Collector |
Toggles to Off |
Stays Off |
|
Raw |
Stays On |
Toggles to On |
|
GPIO Type |
While On |
While Off |
|---|---|---|
|
Relay Output |
Stays On |
Stays Off |
