HP prime entering simple routines

Hi,
I am trying the HP prime and I am somewhat disappointed. A couple of simple things have baffled me:
First of all I use RPN all the time.
With my 50G I could enter numbers, store them in variables and those would be available in the VAR menu by simply using the soft buttons. This is available on the prime, but I need to push a while bunch of buttons to get to my variables. Is there a smart way to get these to show in the home screen?
Also, simple but time saving routines on the 50G, like <25.4 *> then save this under "INCH" and you can enter a number and press this button and it saves a whole lot of presses to just convert from inch to mm. How does one do this with the prime?
Many thanks,

User-created variables can be accessed relatively easily by pressing the Vars key. The vars that you create in Home are under the Vars / User tab, and the vars you create in CAS are under the Vars / CAS tab. The permanently built-in vars are under the Vars / Home tab, but those are probably easier to simply type (in ALPHA mode) rather than using the Vars key.
Example: In RPN mode in Home, type NICK and press Enter. Prime will ask you, "Do you want to create a variable called NICK". Tap OK. Now type 123.456 Enter 'NICK' Sto, to store 123.456 into NICK. Now accessing NICK only requires three keystrokes: Vars, then the digit in front of "User Variables", then the digit in front of NICK. Once you get used to it, you can access all your variables very quickly that way.
No, there is no simple way to assign user variables onto the softkeys (AKA menu buttons), like the 50g can do. Sorry! But the Vars key shows them in vertical menus nicely.
Suggestion: The << 25.4 * >> program on your 50g is perhaps best replaced by a "User Defined Function" on the Prime. Press Shift Define to start the user-defined function editor. Type INCH for the name, and 25.4*X as the function. Now in Home, press Toolbox [User] User Functions to access it. It even works in RPN mode!
If you really want keyboard efficiency, you can customize what the keys do (in USER mode), so you can access your favorite variables, functions, and programs, with just one or two keystrokes. Details can be found in the User Guide, starting at page 516.
Disclaimer: I do not work for HP. I'm just another HP customer.
-Joe-

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Edited by: Raj on Jul 29, 2009 10:59 AM
Edited by: Raj on Jul 29, 2009 10:59 AM
Edited by: Raj on Jul 29, 2009 11:00 AM

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Solved!
Go to Solution.

OK, here is more detailed information.
I have attached the VI.
This is the code from the "C" file created by right-clicking the CLN and creating a "C" file.
When the parameter in the CLN is set to "array data pointer":
/* Call Library source file */
#include "extcode.h"
int32_t Load_Transmit_FIFO_RTx(uint32_t handle, uint16_t channel,
int32_t FIFOnumber, void data[], int32_t numWords, int32_t *actualLoaded,
int32_t *actualStartIndex);
int32_t Load_Transmit_FIFO_RTx(uint32_t handle, uint16_t channel,
int32_t FIFOnumber, void data[], int32_t numWords, int32_t *actualLoaded,
int32_t *actualStartIndex)
/* Insert code here */
When the parameter is "pointers to handles":
/* Call Library source file */
#include "extcode.h"
/* lv_prolog.h and lv_epilog.h set up the correct alignment for LabVIEW data. */
#include "lv_prolog.h"
/* Typedefs */
typedef struct {
int32_t control;
int32_t data;
} TD2;
typedef struct {
int32_t dimSize;
TD2 data[1];
} TD1;
typedef TD1 **TD1Hdl;
#include "lv_epilog.h"
int32_t Load_Transmit_FIFO_RTx(uint32_t handle, uint16_t channel,
int32_t FIFOnumber, TD1Hdl *data, int32_t numWords, int32_t *actualLoaded,
int32_t *actualStartIndex);
int32_t Load_Transmit_FIFO_RTx(uint32_t handle, uint16_t channel,
int32_t FIFOnumber, TD1Hdl *data, int32_t numWords, int32_t *actualLoaded,
int32_t *actualStartIndex)
/* Insert code here */
When the parameter is set to "handles by value":
/* Call Library source file */
#include "extcode.h"
/* lv_prolog.h and lv_epilog.h set up the correct alignment for LabVIEW data. */
#include "lv_prolog.h"
/* Typedefs */
typedef struct {
int32_t control;
int32_t data;
} TD2;
typedef struct {
int32_t dimSize;
TD2 data[1];
} TD1;
typedef TD1 **TD1Hdl;
#include "lv_epilog.h"
int32_t Load_Transmit_FIFO_RTx(uint32_t handle, uint16_t channel,
int32_t FIFOnumber, TD1Hdl *data, int32_t numWords, int32_t *actualLoaded,
int32_t *actualStartIndex);
int32_t Load_Transmit_FIFO_RTx(uint32_t handle, uint16_t channel,
int32_t FIFOnumber, TD1Hdl *data, int32_t numWords, int32_t *actualLoaded,
int32_t *actualStartIndex)
/* Insert code here */
As to the DLL function, it is a bit more complicated than I explained above, in the current case. My VI calls the function by this name in one DLL, and that DLL loads a DLL and calls a function (with the same name) in the second DLL, which does the work. (Thanks Rolfk, for helping me with that one some time back!)
Here is the code in the first ("dispatcher") DLL:
int borland_dll Load_Transmit_FIFO_RTx(DWORD handle, usint channel, int FIFOnumber, struct FIFO_DATA_CONTROL *data, int numWords, int *actualLoaded, int *actualStartIndex)
t_DispatchTable *pDispatchTable = (t_DispatchTable *) handle;
int retStat = 0;
retStat = mCheckDispatchTable(pDispatchTable);
if (retStat < 0)
return retStat;
if (pDispatchTable->pLoad_Transmit_FIFO_RTx == NULL)
return edispatchercantfindfunction;
return pDispatchTable->pLoad_Transmit_FIFO_RTx(pDispatchTable->handlertx, channel, FIFOnumber, data, numWords, actualLoaded, actualStartIndex);
borland_dll is just "__declspec(dllexport)"
The current code in the DLL that does the work is:
// TEMP
typedef struct {
int control;
int data;
} TD2;
typedef struct {
int dimSize;
TD2 data[1];
} TD1;
typedef TD1 **TD1Hdl;
// END TEMP
int borland_dll Load_Transmit_FIFO_RTx(int handlertx, usint channel, int FIFOnumber, struct FIFO_DATA_CONTROL *data, int numWords, int *actualLoaded, int *actualStartIndex){
struct TRANSMIT_FIFO *ptxFIFO; //pointer to transmit FIFO structure
usint *pFIFOlist; //pointer to array of FIFO pointers to FIFO structures
int FIFOentry, numLoaded;
usint *lclData;
usint nextEntryToTransmit;
// TEMP
FILE *pFile;
int i;
TD1** ppTD = (TD1**) data;
TD1 *pTD = *ppTD;
pFile = fopen("LoadFIFOLog.txt", "w");
fprintf(pFile, "Starting Load FIFO with %d data words, data pointer 0x%x, with the following data&colon; \n", numWords, data);
for (i = 0; i < numWords; i++) {
fprintf(pFile, "%d: control--0x%x, data--0x%x \n", i, data[i].control, data[i].data);
fflush(pFile);
fprintf(pFile, "OK, using CIN generated structures: dimSize %d, with the following data&colon; \n", pTD->dimSize);
for (i = 0; i < numWords; i++) {
fprintf(pFile, "%d: control--0x%x, data--0x%x \n", i, pTD->data[i].control, pTD->data[i].data);
fflush(pFile);
// END TEMP
if ((handlertx) <0 || (handlertx >= NUMCARDS)) return ebadhandle;
if (cardrtx[handlertx].allocated != 1) return ebadhandle;
pFIFOlist = (usint *) (cardrtx[handlertx].segaddr + cardrtx[handlertx].glob->dpchn[channel].tr_stk_ptr);
pFIFOlist += FIFOnumber;
ptxFIFO = (struct TRANSMIT_FIFO *)(cardrtx[handlertx].segaddr + *pFIFOlist);
//use local copy of ptxFIFO->nextEntryToTransmit to simplify algorithm
nextEntryToTransmit = ptxFIFO->nextEntryToTransmit;
//on entering this routine nextEntryToLoad is set to the entry following the last entry loaded
//this is what we need to load now unless it's at the end of the FIFO in which case we need to wrap around
if ( ptxFIFO->nextEntryToLoad >= ptxFIFO->numEntries)
*actualStartIndex = 0;
else
*actualStartIndex = ptxFIFO->nextEntryToLoad;
//if nextEntryToLoad points to the last entry in the FIFO and nextEntryToTransmit points to the first, the FIFO is full
//also if nextEntryToLoad == nextEntryToTransmit the FIFO is full and we exit without loading anything
if (( (( ptxFIFO->nextEntryToLoad >= ptxFIFO->numEntries) && (nextEntryToTransmit == 0)) ||
( ptxFIFO->nextEntryToLoad == nextEntryToTransmit)) && (ptxFIFO->nextEntryToLoad != INITIAL_ENTRY)){
*actualLoaded = 0; //FIFO is full already, we can't add anything
return 0; //this is not a failure, we just have nothing to do, this is indicated in actualLoaded
numLoaded = 0;
lclData = (usint *)data; //must use 16 bit writes to the module
//conditions are dealt with inside the for loop rather than in the for statement itself
for (FIFOentry = *actualStartIndex; ; FIFOentry++) {
//if we reached the end of the FIFO
//if the module is about to transmit the first element of the FIFO, the FIFO is full and we're done
//OR if the module is about to transmit the element we're about to fill in, we're done - the
//exception is if this is the first element we're filling in which means the FIFO is empty
if ((( FIFOentry >= ptxFIFO->numEntries) && (nextEntryToTransmit == 0)) ||
((FIFOentry == nextEntryToTransmit) && (FIFOentry != *actualStartIndex) )){
*actualLoaded = numLoaded;
//set nextEntryToLoad to the end of the FIFO, we'll set it to the beginning next time
//this allows us to distinguish between full and empty: nextEntryToLoad == nextEntryToTransmit means empty
ptxFIFO->nextEntryToLoad = FIFOentry;
return 0;
//we reached the end but can continue loading from the top of the FIFO
if ( FIFOentry >= ptxFIFO->numEntries)
FIFOentry = 0;
//load the control word
ptxFIFO->FifoData[FIFOentry * 3] = *lclData++;
//skip the high of the control word, the module only has a 16 bit field for control
lclData++;
//now put in the data
ptxFIFO->FifoData[(FIFOentry * 3) + 2] = *lclData++;
ptxFIFO->FifoData[(FIFOentry * 3) + 1] = *lclData++;
numLoaded++;
//we're done because we loaded everything the user asked for
if (numLoaded >= numWords) {
*actualLoaded = numLoaded;
ptxFIFO->nextEntryToLoad = FIFOentry+1;
return 0;
//if we reached here, we're done because the FIFO is full
*actualLoaded = numLoaded;
ptxFIFO->nextEntryToLoad = FIFOentry;
fclose (pFile);
return 0;
As you can see, I added a temporary diagnostic with the structures that were created in the "Handles by value" case, and print out the data. I see what is expected, whichever of the options I pick in the CLN!
I understood (from the information in the two links I mentioned in my original post, and from the name of the option itself) that "array data pointer" should pass the array of data itself, without the dimSize field. But that does not seem to be what is happening.
Batya
Attachments:
ExcM4k Load Transmit FIFO.vi ‏15 KB

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But I was wrong when I said Fiscal period will be easy.
Because getting the date from fiscal period will be quite tricky in the case your user selection is range for Fiscal period As after user enters a fisacl period value you will always have to get the last date of the month for that fiscal period and which will require you to write the code to get last date of month as 30 or 31 . Also you will have to take care of the leap year in the case of feb to get 29
So that will requier you to write the complex code.
Better is you should go for the calendar day range for the user input as it will just require you get the fiscal period which can be just done by offset and concatenation
01.01.2006 can easily be converted to 001.2006
and 12.02.2006 can be converted 002.2006
There is one more solution
Check if your Cube contains 0CALMONTH/YEAR in your Cube where you have 0CALDAY or you can bring just by mappping your day with it.And check whether your fisacl variant is K4 coming up from R/3 it is always compounded with 0FISCYR then you can restrict your data with 0CALMONTH/YEAR only. and the conversion of 0CALMONTH/YEAR is pretty simple.
All these are options upon which you can work
I would say you should go for calmonth year as it will be a simple routine.
Hope it helps you understand better.
Thanks

Program that sends G-code pages to a machine tool's controller

I am looking for some advice and examples (if possible) of programs that are able to send G-code programs to a CNC machine's controller.
In other words I would like to build a program that could send the G-code program to the CNC brain of a machine tool (possibly through the serial port of the computer) . Also, I would like to read back programs from the CNC brain of a machine tool, bring them on the screen and possibly write an ASCII file that could be opened with notepad or word.
Could somebody help?
Thank you

I think you want to use the parallel port rather than the serial port. I've done what I think you want to do, but not in LabView.
I have a Taig benchtop milling machine that I built my own stepper control box for (based on the allegro chips). It like every hobby CNC machine I've seen uses step and direction lines for each axis. IE, when the direction line is pulled high, each pulse on the step line moves one direction, when the direction line is pulled low, each pulse moves the stepper the other way. This very low-level of control is quite popular in CNC machine tools and allows the controller to blend axes for circles etc.
You've got a couple issues with trying to do this level of stepper control with LabView, the main issue is windows itself, the latencies out the parallel port is quite long due to the hardware abstraction layer in windows. Second is the lack of determinism in windows. So even after your pulses (IE data) start spewing out the serial port, there is no guarantee that all your data will come out in a smooth consistent manner. Rather, there will be a splatter of data, a pause while windows does something else, then another splatter of data.
This is a real issue when controlling either steppers or servos with step and direction type of controls. Because the step pulse train is directly linked to motor speed. Any fast changes in the pulse train period will cause motor stalls or other very undesirable behavior. You can get around this to some extent by working very slowly.
My workaround is to use TurboCNC (you get the source code when you register), which is a turboPascal program that runs in DOS. DOS is so simple that it's quite deterministic and you can get nice consistent pulse trains out the parallel port. I use various windows programs to build my parts, and generate G-Code (Autodesk inventer, meshcam, MasterCam, etc). I've also written some, not-for-prime-time, Labview routines to edit G-code, view toolpaths, and unroll loops, etc.
To use a non-real-time OS to control real-time critical tools like this, you can always build a hardware buffer. Imagine a hardware Queue where your pulses are pushed into one side of the queue sporadically, and a hardware clock pops them out of the queue to your controller in nice smooth increments. I've been toying with building such a thing, but honestly, the DOS turboCNC program works so well that it's not high on my list.
The beauty of DOS and turboCNC is that you can use a $40 small laptop to control your machine. I have a 486 HP laptop sitting on top of my controller next to my mill. Small, cheap and effective, everything I want.
Pushing your data out of the parallel port is fairly easy in LabView, and parsing G-code is also quite easy, but before you spend much time on it, make sure the data coming out your parallel port is suitable for your needs from a timing standpoint.
Hope that helps,
Sheldon
Message Edited by Sheldon Stokes on 09-27-2005 09:01 AM
Technical geek, engineer, research scientist, biodegradable...

Suggested utility for SECURITY -using Photo Booth! Apple? Third Party?

(If this isn't the proper venue for suggestions, please forward this accordingly)
If anyone knows of some shareware/freeware/commercial ware out there that already does this, PLEASE share the info here.
Otherwise, code writers, PLEASE CONSIDER THIS IDEA FOR ENHANCED SECURITY. Password protection's fine, and, properly used, very effective for deterring casual snoopers. Still, existing Mac OS and equipment needs probably just a few lines of code to offer SUBSTANTIALLY improved evidence of who's been trying to peek into my files.
For all Macs with the built-in camera and Photo Book, consider this little trick:
Anytime a password-protected login screen comes up, Mac first opens Photo Booth (unannounced, completely unbeknownst to the user). If user enters a wrong password, FOOSH -- that white flash of the screen captures the would-be user's face looking directly into my screen. It repeats the process for every failed entry until an administrator-determined threshold says to shut down everything for an administrator-determined time frame.
Given the right password, or course, Photo Booth quits. This security utility comes back up anytime a password is required to gain access.
Further, as I remember from Kensington's Pass Proof program, OSX saves a journal entry (accessible only to Administrator) of "failed logon attempts" with that image, the time of day, and the wrong password (to help me get an idea of who's perhaps gotten an idea of what my password MAY be.) When it happens, Mac does NOT tell the uninvited guest. If he/she's no threat, fine, I just apprise the person of the proper logon. And if I find a photo of someone I really do NOT want anywhere near my stuff, I have PHOTO EVIDENCE of the attempted log on — and some insight into his/her knowledge of my passwords.
Seems like a fairly simple routine to program. Can't someone come up with this as a new security feature of OSX? Or maybe even a third party? I'd gladly pay $10 for shareware that gives me this definite, undeniable information.
Thanks for listening.

"If this isn't the proper venue for suggestions, please forward this accordingly"
http://www.apple.com/feedback/

HP prime entering simple routines

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