motion/ecmc_plugin_fft
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This commit is contained in:
Anders Sandström
2020-04-24 13:28:33 +02:00
parent c40fdcfabc 0989b969ba
commit 4df1650541
2 changed files with 12 additions and 12 deletions
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21
README.md
View File

@@ -45,9 +45,9 @@ Note: If another plugin is loaded in between the loading of FFT plugins, it will
The different available configuration settings:
* SOURCE= source variable : Sets source variable for FFT (example: ec0.s1.AI_1). This config is mandatory.
* DBG_PRINT=1/0 : Enables/disables printouts from plugin, default = disabled.
* NFFT= nfft : Data points to collect, default = 4096.
* NFFT= nfft : Data points to collect, default = 4096.
* APPLY_SCALE=1/0 : Apply scale, default = enabled.
* DC_REMOVE=1/0 : Remove DC offset of input data (SOURCE), default = disabled.
* RM_DC=1/0 : Remove DC offset of input data (SOURCE), default = disabled.
* ENABLE=1/0 : Enable data acq. and calcs (can be controlled over asyn), default = disabled.
* MODE=CONT/TRIGG : Continious or triggered mode, defaults to TRIGG
* RATE=rate in hz : fft data sample rate in hz (must be lower than ecmc rate and (ecmc_rate/fft_rate)=integer), default = ecmc rate.
@@ -94,20 +94,19 @@ Exmaple: Enable
```
"APPLY_SCALE=1;NFFT=1024;DBG_PRINT=0;SOURCE=ax1.actpos;"
```
### RM_DC
Remove DC of input signal. Default is disabled.
#### DC_REMOVE (default: disabled)
Remove DC of input signal by substracting average of input signal. This can be usefull if low frequencies are of intresst since the DC component normally distorts the spectrum near 0Hz.
Exmaple: Enable
Exmaple: Remove DC offset
```
"DC_REMOVE=1;APPLY_SCALE=1;NFFT=1024;DBG_PRINT=0;SOURCE=ax1.actpos;"
"RM_DC=1;APPLY_SCALE=1;NFFT=1024;DBG_PRINT=0;SOURCE=ax1.actpos;"
```
#### ENABLE (default: disabled)
Enable data acq. and FFT calcs. The default settings is disabled so needs to be enabled from plc or over asyn in order to start calculations.
Exmaple: Enable at startup by config
```
"ENABLE=1;DC_REMOVE=1;APPLY_SCALE=1;NFFT=1024;DBG_PRINT=0;SOURCE=ax1.actpos;"
"ENABLE=1;RM_DC=1;APPLY_SCALE=1;NFFT=1024;DBG_PRINT=0;SOURCE=ax1.actpos;"
```
Exmaple: Enable FFT index 0 from EPICS:
```
@@ -144,7 +143,7 @@ Triggered mode:
Exmaple: Mode triggered
```
"MODE=TRIGG;ENABLE=1;DC_REMOVE=1;APPLY_SCALE=1;NFFT=1024;DBG_PRINT=0;SOURCE=ax1.actpos;"
"MODE=TRIGG;ENABLE=1;RM_DC=1;APPLY_SCALE=1;NFFT=1024;DBG_PRINT=0;SOURCE=ax1.actpos;"
```
Exmaple: Mode from EPICS record
```
@@ -161,7 +160,7 @@ Note: only a lower and "integer" division of sample rate can be defined.
Exmaple: Rate = 100Hz
```
RATE=100;MODE=TRIGG;ENABLE=1;DC_REMOVE=1;APPLY_SCALE=1;NFFT=1024;DBG_PRINT=0;SOURCE=ax1.actpos;"
RATE=100;MODE=TRIGG;ENABLE=1;RM_DC=1;APPLY_SCALE=1;NFFT=1024;DBG_PRINT=0;SOURCE=ax1.actpos;"
```
## EPICS records
Each FFT plugin object will create a new asynportdriver-port named "PLUGIN.FFT<index>" (index is explaine above).
@@ -270,7 +269,7 @@ Plugin info:
SOURCE=<source> : Sets source variable for FFT (example: ec0.s1.AI_1).
NFFT=<nfft> : Data points to collect, default = 4096.
APPLY_SCALE=<1/0> : Apply scale, default = disabled.
DC_REMOVE=<1/0> : Remove DC offset of input data (SOURCE), default = disabled.
RM_DC=<1/0> : Remove DC offset of input data (SOURCE), default = disabled.
ENABLE=<1/0> : Enable data acq. and calcs (can be controlled over asyn), default = disabled.
MODE=<CONT/TRIGG> : Continious or triggered mode, defaults to TRIGG
RATE=<rate in hz> : fft data sample rate in hz (must be lower than ecmc rate and (ecmc_rate/fft_rate)=integer), default = ecmc rate.

3
ecmcPlugin_FFT-loc/ecmcPlugin_FFTApp/src/ecmcFFTDefs.h
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@@ -19,9 +19,10 @@
#define ECMC_PLUGIN_SOURCE_OPTION_CMD "SOURCE="
#define ECMC_PLUGIN_NFFT_OPTION_CMD "NFFT="
#define ECMC_PLUGIN_APPLY_SCALE_OPTION_CMD "APPLY_SCALE="
#define ECMC_PLUGIN_DC_REMOVE_OPTION_CMD "DC_REMOVE="
#define ECMC_PLUGIN_DC_REMOVE_OPTION_CMD "RM_DC="
#define ECMC_PLUGIN_ENABLE_OPTION_CMD "ENABLE="
#define ECMC_PLUGIN_RATE_OPTION_CMD "RATE="
// CONT, TRIGG
#define ECMC_PLUGIN_MODE_OPTION_CMD "MODE="
#define ECMC_PLUGIN_MODE_CONT_OPTION "CONT"