Forces IEEE 1149.1 TAP state machine to a stable state for a specified wait period
Syntax
runtest_hw_jtag [‑wait_state <arg>] [‑end_state <arg>] [‑sec <arg>]
[‑max_wait <arg>] [‑tck <arg>] [‑quiet] [‑verbose]Usage
| Name | Description |
|---|---|
[-wait_state]
|
valid stable_state - valid stable states IDLE, RESET, IRPAUSE, and DRPAUSE |
[-end_state]
|
valid stable_state - valid stable states IDLE, RESET, IRPAUSE, and DRPAUSE |
[-sec]
|
Number of seconds to wait in wait_state |
[-max_wait]
|
Maximum Number of seconds to wait in wait_state - max timeout |
[-tck]
|
Number of TCK cycles to wait in wait_state Default: Number of TCK cycles to wait in wait_state |
[-quiet]
|
Ignore command errors |
[-verbose]
|
Suspend message limits during command execution |
Description
- Which TAP stable state to go to perform the wait operation.
- A wait time expressed as:
- 'n' TCK cycles, where 'n' is a 32-bit unsigned decimal number.
- A minimum and optionally maximum time in seconds to stay in the wait state, with min/max times specified as unsigned integers or real numbers.
- The TAP stable state to go after the wait operation has completed.
The default values for -wait_state and -end_state are IDLE. If a non-IDLE wait_state or end_state are defined, then the hw_jtag object will first transition to the specified wait_state before starting the wait operation. Once the wait time has elapsed, the hw_jtag object transitions to the specified end_state. When the wait_state and/or end_state are specified by the runtest_hw_jtag command, subsequent commands will use the same wait_state/end_state unless they are changed.
catch command.Arguments
-wait_state <arg> - (optional) Specify the state to to go to while in the wait state. Can be specified as one of the following TAP stable states: IDLE, RESET, IRPAUSE, or DRPAUSE. The default is IDLE.
-end_state <arg> - (optional) Specify the state to transition into after the wait operation has completed. Can be specified as one of the following TAP stable states: IDLE, RESET, IRPAUSE, or DRPAUSE. The default is IDLE.
-sec <arg> - (Optional) 32-bit decimal integer specifying the minimum number of seconds to wait.
-max_wait <arg> - (Optional) Maximum number of seconds to wait in wait_state.
-tck <arg> - (Optional) 32-bit decimal integer specifying the number of JTAG clock cycles to wait.
-quiet - (Optional) Execute the command quietly, returning no messages from the command. The command also returns TCL_OK regardless of any errors encountered during execution.
-verbose - (Optional) Temporarily override any message limits and return all messages from this command.
set_msg_config command.Example
runtest_hw_jtag commands with various wait_states and end_states specified:
// Wait in default IDLE state for 1000 TCKs,
// then go to end_state DRPAUSE
runtest_hw_jtag -tck 1000 -end_state DRPAUSE
// Go from DRPAUSE (end_state defined in previous
// runtest_hw_jtag command) to IDLE and wait for
// 500 TCK clock cycles before going to DRPAUSE again
runtest_hw_jtag -tck 500
// Go from DRPAUSE to IDLE and wait for
//1,000,000 TCKs or at least
// 5 seconds before transitioning to DRPAUSE
runtest_hw_jtag -tck 1000000 -sec 5
// Go from DRPAUSE to IDLE and wait for
// at least 1 millisecond and at most 50 milliseconds
// before remaining in IDLE state
runtest_hw_jtag -sec 1.0E-3 -max_wait 50.0E-3 -end_state IDLE
// Go from IDLE to DRPAUSE and wait for at least
// 85 milliseconds before returning to IDLE state
runtest_hw_jtag -wait_state DRPAUSE -sec 85E-3
// Go from IDLE to DRPAUSE state and wait for
// at least 1 second before returning to IDLE state
runtest_hw_jtag -sec 1
// Go to wait_state IDLE (note: current end_state is IDLE),
// wait for at least 10 milliseconds, then stay in IDLE state.
runtest_hw_jtag -wait_state IDLE -sec 1E-2 runtest_hw_jtag command will be used in subsequent commands unless specifically changed.