I want to make it so that when you fill in a field (in case) X and go to a state, it is deleted (this field should be saved in the history, I think this is done by default). This is necessary so that the user does not have to be hitting the pencil and erasing the message that comes from another state.
As I saw with a Trigger it can be done, do you have any idea?
You don't need code for it, you could do it with config changes (workflow / flow / process builder). But if you're really after a trigger - something like that.
trigger CaseTrigger on Case(before update){
for(Case c : trigger.new){
Case old = trigger.oldMap.get(c.Id);
if(c.Status != old.Status){
c.Description = null; // whichever field you want to wipe
}
}
}
Edit about 0 code solutions
Look into workflows, flows and process builder. Actually if you're starting fresh maybe focus on flows, the other 2 are bit passe and SF recommends migrating away: https://admin.salesforce.com/blog/2021/go-with-the-flow-whats-happening-with-workflow-rules-and-process-builder
Have a look at these and if you're stuck: consider posting at dedicated https://salesforce.stackexchange.com. StackOverflow is really for code related stuff, you'll reach more admins over there.
https://trailhead.salesforce.com/content/learn/modules/flow-builder
https://trailhead.salesforce.com/en/content/learn/modules/platform-app-builder-certification-maintenance-winter-21/get-handson-with-flow-before-save-trigger-when-certain-record-changes-are-made
https://salesforce.stackexchange.com/questions/301451/trigger-flow-if-a-specific-field-on-the-updated-record-changed
https://help.salesforce.com/s/articleView?id=release-notes.rn_forcecom_flow_fbuilder_prior_values_flow.htm&type=5&release=230
I'm linking an arcade button connected to a USB encoder with a Max patch. The button is behaving strangely. Here's what happens:
I have the button mapped to the a key. When Max is open, this functionality breaks. Even outside of Max. Even once I close Max, I need to remap the key. I'm not using MAME or anything like that; just JoytoKey for the mapping.
This issue is negated partially through use of the HIobject. Max recognizes the button and I can use it, however it's not functioning as an on/off. Rather a bang is sent on button press and release. How do I make the button work normally (send a single bang on press, and none on release)?
Here's my patch, if it helps. I don't know how useful it is without my video files:
<pre><code>
----------begin_max5_patcher----------
2245.3oc6cszbjpaEdsmpl+CTr1gB8hGYY1jJYaRVMUptvzx1ZtzPGdX6I2J
+2i3YyCoF0.M8hqbMi6FjP5b9zQe5bPvw+92+1Sluj7EMyz3Oa7Cimd524m4
opyUdlmZOwSlmB9JLJHqphlEmnwElO2TzGAowAmnBJIt3DKNhlWcUf1ydNHk
W8bZ5AZbvKQzAExxomp6j+JMllxBMLL9W+i+hgweO4WY4rveyvneymTj219n
tl3X00m7xO+S.+tJWWy7eclVqqlr3bymMLq9uw+9hvkG9NK9sCozv75Zhv9V
DhM+G.B.P1Pf+yF.Hwxl+gKn7CHzx9RajE7A83gf77T1KE4zKeKqATaQ0RrK
pfl7Z646JnOJEkD+lX.dP0NwGhJqhsnBydOIMWgFge9SM3ib7uSSGbosPKro
r+22+V82Z+Rym7OdVYKsSzrrf2ncih4zuxaJPlcFTr4APj4AQt4wBrIbsKsE
P9WrHVrdGS+jKfSU62YyL4ZnRCEnzH45bDKKegyG78rP9k+f7g1HnC.xw.d8
taHwOY4VexhOl7ow4nfeUJ5GYYm6p34TZFMNOHmkDeHhESCSJhyGPTLnJWzO
Hvxydj5g8qFacvk+lX2e19MMNzuKkZUBskOD8RP7ayODAvdkPuCeTojjBh1.
SxH1GTqJ3WDw+zRkft.WGqJCEWaWejKDa6H15AWg0.Rer9TxQZeNNy7zf3LV
KZBWwBOqY.C3cEdj4GrVChbOWqYxXpv0a.yudy0andq4vEQPIfw+DtmKyHij
IiFYPlyhF54Nkv.BpWL.O08.UVs5lr+bwqkuPUU3t.v9lKBY5C.j0B.XfqkM
4AA.dqG.bVK.f7.ON.vctoXBc4XWmh4tZ.VQU3t.vNyBv.eKzCkCya0.rhpv
1GKh+pCDg3uz.Qv1tUNYSpiCcK73Vpd5sd8zcwAbwcRxdmzSEni.R.8EAPpL
+frhPUw6lEhB7L1RFFueHGZwHG.sa1by6koqmkCtLJAOO9uID281BDrTbDx8
sPEQ+drz2rgix65p.sFHaMVoKDVuoE9vvUGruhpvcwyB7r1sDQC96nmEXvpi
NRQU3t.vnYAX.4ACvq91UopJbW.X3rTDdXKviDfQ9qlhPQU3t.vfYAXBxxy+
QBvqN3CUUgECvuFkTdaxl8lq5VuqTv16S8UwtqdmQ6tGquljdJnpCb1Brlb8
6UZEdOy8KUlRt4luoAwGSNY.rUE3qcpwwYYFs2j+XH702aSkvvox616Z67tH
fcEvNsit1hVtqsbyOv8z0Von5B8KXGQU3huoFPf28MfAon5BcFXOQ0EeKT.d
tOHa0E5Avdhp3EipDGkD8Eipkazc6NbO+xPB16ZTIWe0ONDhCAX6iJcJoZqg
Qd27dYitosF8JVqbE6.2whT1WsOGNGYgkMVP5uVf2VXazT0j.br7KOGDh4.B
1Ai4CHt98U5njDtpbNIMefVbLHOXxdnFFwN28vRMXSTexL3krjnhbJWfeuB.
9aw4oIG9mexdKH8TFz5TxGW1.TteUrHZ2VjpPc+MVbMvxKiQKOS+ZTpEC2NV
tzlDmyGgNjwGjnc66aegtZX4bQd6Fqyw1da6ZcwGZER9XVgK101FgvXyg06H
qYObAOOtIJoAJRoCZFDFU0LvQMSoVPqUyeXXOpKRC9LOYxjxdZwgltR3kmy3
7SgAQMk5XOp7ORhZz.qQkTjQOlkew7arbMnrmK+2TPnTwNmv8KK6PFMrwDpx
0U6wcWvwfy4BGLRaFFEHiGKR6lHNQBOmb4Yj3GS6vRjYnTMr7vjHdH.cVHlA
ou8h4zlPXW+ZYfEWlcMo7vfv24cN6+1d4Vf5Iw17kprA.GAh5oLgMUPQdBmO
gEJsT97fTwHKeHNKMT5PbQL6+THQAOKC13C1zzyBundVCcJyyBgttmZoqzFx
ZfgDaBafdHxnRGBGRrpuvDIbVIM9MVbmUyGuZ1rL3fmaitkCmiNkUQQVdHkO
Hec5TEpqlNUSmpoS0zoZ5zRJRvMPmBzzoZ5TMcplNUSmNlNMHH8LRApTo0SS
ipoQ0znZZTMMJTQZTcv8ZZTMMplFUSiJjFEnHMpNndMMplFUSipoQmPi1tq7
pPkd05poS0zoZ5TMc5eToSG9PNYftgmHJC8cKUSnpIT0DpZBUo6gO5F1CeMc
plNUSmpoS+CCcZaASSSX0snYYNBbbdPs5cOHpoG58BZjkTjF11sco.tdJn4Q
ZVNKt2Dlt2YOiq9xfndORTpC2t9yUk9qJ2EtU8nuYeygqqgcYHP1w9lrXDYZ
ZsBPpRQmHjS86.Y+i7qR4GnxyMIEWhr1FEChUBJcuplAbbDj0GpyRN.Gjjx1
F42cKjeemouien5zroP4uprsQ982.4GB8l91zsOxORIweLizH4WnINe5a06s
FBTm2P6ejWc1mzywBONYUVVzkNJI8HMsxQwMRWmkC.3uYjNpgsiLf5zX6sPB
.ag0Iez8AM6BoD6FhrcCYpsRnmjwLu8SDjY13tah.1VhH3reh.PhHP1OQ.JQ
D72MQvEKQDv6mHPtmrXpIBNRDAv9IBtRDA39IBxnlPagHnTfIvsKvDjRdWAm
y6PjfL.QclzQnmiUksIx+XJRIxu+LdGRDjqEZyDPdRJaajek7eXrWFikeGfb
4WjuEan7CuECVY1ObeVmlUFvMQGIJxI7VEcDYS7eyG7nhtff1.4GAgV6mDS1
BIlfq+q2wtHwaQDzHOxNhwaQLyUYY88RhcUJNDxL7f9tBRpzM7f90I4kgGUy
wHb961ww3pjEO45qQggNBxH40ZSyH0nip0s9GsMZiiRZyLyF3FNxzFT88tXz
Q0ZSyrnMTaTZt8XNKUt6LsxO4h1rMRrRtHRPyv36I3OgDMRLr+Lk1iZv+5UJ
Di+M2Z9fym+fll0HO0Jh4ofelTG.+y0GyhqOtNwEZlR+f0dI0ItPyfzv2Y4z
v1cvy7Kml79T0eYYRiKXsAeTBkkccUdXpbeEyNGTCZU4qou+MdE9+qypUK.
-----------end_max5_patcher-----------
</code></pre>
It's hard to give an exact answer without knowing what your USB device outputs, however in your patch whatever exits the [hi] object goes into the [live.text] button, which is set to Button mode, always converting it to a bang.
In the patch below I set the [live.text] button to Toggle mode. I also took the liberty of cleaning some other things up.
The next thing though is that you will need to find out what part of the output of the hi object is the information you are looking for. You can do that with a [print] object. Then you can select that number with an [unpack] and select the 1's and use that to trigger [random] (see the patch below).
----------begin_max5_patcher----------
1559.3oc6Z0ziiZCF9bxuBDmmF4O3ypdpWpZu11SqVE4P7Lw6BXpwjYFsZ+u
WaCjPBDvIgY6glLRCAaiseedd+zjusbg6F9azRWme14SNKV7skKVXZR2vhl6
W3lQdKIkTZFlaBOKilKceptOI8Moo8ew4YV9VG4NpSdU1FpvgkatKkUJUegH
cJekIS1QKc1PkuRo4N.Gh5QfsyUgfVplZhjwyWmxxoI7pbyriZFgZlY4oToY
q.aZjs0rA3a9xOAAtGGIuR1NTP6JPTa.V9KqEzDYsTiBvq.O4.AlKXXj9BBr
B37Y8y78kK0+6IKQmb5qp8QOvoPvNBYSIDwWuLfTadef5CDCgX.BFeThPFAB
MuBTUdAI4qJBT8msxUzvxEto05ljuWPqEJWCjcxEmOeYL.FFrJV+IDDFiCQd
f.EFfhWgMshiQ.LJ.hdxIL7tPjKa.jriyKo055M1.6nBps3S3Mq6hA8kRTTv
GglbIM8nA6IRDpuD4MrDgtDiugj+hlqGknQ.+AH5HCoh89HT1kNrAcQ0U4CZ
V3HCenT57a2EVx8ngQJ3.Ka21GzlYbvynUfqAJX7GCbAsDt7CuQ3B9CFt.Gz
qtC3pR41npciumHxIYz9cvjzr5w+azbpfk33372+4u537G72KkLkSWGacn.O
DIofHTKljJVSyIaRocefqya7jlmP.nu4oxAkVcqg16xzkj8zsqIRofsoRRO9
sxFjrAJ0HVZEk+bayssepvUk0rcA5MJ7vN8jgkxyeYPv+jQkoHuN3zI8UtiK
jSOEsvGptKi9R6kqT4IiVVRdg1yXqqpyTtig9ia1ziyG21P48v+7jNB75GIB
+g3kYGyVy.7UFERmv5zp4CktwPReWuaymz+Elb0qp7s4u5TjRdWuk2xJKlNS
Z73dlQvUQfy3TuXi0afwGnW703lFAFG6s1QskYFX7VG3aT3fH7co2kx1SWY.
7AbY2qyKFoa.0j3n9pId0Aj8uFzEFYi+cofjWxZQXz7vG2XVZCYfLfj+QETP
MZndmqthrHzv4j7MFdXzoYFCQLRF6.6Kw9RJxJ6HC0EFEo9uuen1qFDbLAN7
E0cGpx.z+ANFPgAyPQBOqzQTZTSY2GVmwiIkQePu7ddlKxHlAGXaXL+wr1Ay
mcsARsAN8vmKbymVqxo0VdlCDXIP6aRsLHnGPOklH16GasDHsmtS2o2.poi+
2F32hhs5ESGqgMym.e+.eHHFqMLLG9ENBzA+R47htxs9dAsP4f6rhHFOVU30
q7hmfA1JHuJ4lkv8RjhBmVqryDr2ZKdYKKQOQDw6GYK0iUTIWqU9pDzoNzkl
ZBCF.A8gpv851PHOEV6E34oc6zMmosDI47nXIorhCGBa2vXKbIaJ4opHepMx
Nin964RAe8e8J6EhHqDsJiu+PbEkaEVJ8PfmoG5WUoPVWFAeOipaoy.ZnuJP
jNKe+Pbm9NSqvHD7bohlVWpXJ5g.xcjktLV2hKpCjySaTWOhUlNDMyV+dR3o
Jmn7ssbMQ7xlSmzpb1+T0z8oOqxXkJJNzSaGMgeasDmfJXF7UeKUUX9nTwzC
0JpHvSqc4G8fJFkJf1SEvakJhBLTQ7CpXPpfPDE3oogKMLqn.jef18K3AEbQ
J.YGEbyNj7hMT.7AEbQJ.ZGEbyNhv.sin.zCJXPJnM8GKngwFpcwDPFqA7Cp
XzjVcv1m0pyMGcvGqq5Iv6AYLZtRX6yU5lohvProNo+eQEMMdxY4YlBW8Auc
1O5FSgl51Osn+RdkHoc607xLb5TLIsTxxOTY7mN7CHoyX3hsTgol1AOmAaW3
H0jBmXgMmHsykNQi4TDiFVDg20B6YwBi8lAI7.NM5RMGqDxh0Qe1L28BoOP2
I0OPyA1YgDglKAZRnaNT28sQWXNDIrUJ39yjI7jNKN0MUFaaAW4TswuHLdnW
bVP+WeTj+pPuabb0+9WfPvJu3A55d0Tis.EvygIQnMpp52E68uT1nr1WlpC6
QJJ1SEkMC1rFtYjuvMttidxbKKu9VyAv5Jn6YsiutEhHYGSRSZOnV22BpO.e
WcbbQdEqINfR5VpOYURYoNclxBRsfXNX8kee4+Jwi4ZG
-----------end_max5_patcher-----------
I`m trying to create custom HID device with STM32F103C8, IDE that i choose is STM32CubeIDE and the tutorial that i was following is at ST youtube official channel.
ST offers great tool "Device configuration tool" where i can configure microcontroler, and a lot of code based on my configuration will be generated. That generated code has "user code parts" where user creates his logic, and if he needs to reconfigure microcontroller "Device configuration tool" will not remove that parts of code.
Problem:
To configure custom usb HID i need to change code generated by "Device configuration tool" in places where is no place for user code and that changes will be removed if i run "Device configuration tool" again.
Fields that i only can set in "Device configuration tool" are this:
But that is not enough i also need to change CUSTOM_HID_EPIN_SIZE and CUSTOM_HID_EPOUT_SIZE defines which represent amount of bytes device and host send to each other at once, and also if i change the size of "data pack" i will need to change the default generated callback function that receives that data and works with it, for example the tool generates code like this:
{
USBD_CUSTOM_HID_HandleTypeDef *hhid = (USBD_CUSTOM_HID_HandleTypeDef *)pdev->pClassData;
if (hhid->IsReportAvailable == 1U)
{
((USBD_CUSTOM_HID_ItfTypeDef *)pdev->pUserData)->OutEvent(hhid->Report_buf[0],
hhid->Report_buf[1]);
hhid->IsReportAvailable = 0U;
}
return USBD_OK;
}
but i need the pointer to "Report_buf" not the copy of its first 2 elements, and the default generated code pass only copy of 2 first bytes, and i cant change this in "Device configuration tool".
My current solution:
Actually i solved this issue, but i don`t think i solved it the right way and it works. I have changed the template files which are here "STM32CubeIDE_1.3.0\STM32CubeIDE\plugins\com.st.stm32cube.common.mx_5.6.0.202002181639\db\templates"
And also changed files at "STM32CubeIDE_1.3.0\en.stm32cubef1.zip_expanded\STM32Cube_FW_F1_V1.8.0\Middlewares\ST\STM32_USB_Device_Library\Class\HID"
I don`t think this is the right way to do it, does any one know the right way to do this thing ?
I also found same question on ST forum here but it was not resolved.
what you want to achieve is exactly what is explained by st trainer on this link.
https://www.youtube.com/watch?v=3JGRt3BFYrM
Trainer is step by step explaining how to change the code to use the pointer to buffer
if (hhid->IsReportAvailable == 1U)
{
((USBD_CUSTOM_HID_ItfTypeDef *)pdev->pUserData)->OutEvent(hhid->Report_buf);
hhid->IsReportAvailable = 0U;
}
Is it possible to indicate monitor position in Weston/Wayland?
I have two monitors and been testing the Weston compositor, but I have been unable to indicate which monitor should be the main one (or which one should show the "left part" of the screen).
Checking the weston.ini docs (http://manpages.ubuntu.com/manpages/xenial/en/man5/weston.ini.5.html) I found info about setting resolution, scaling and transform/rotation, but nothing about the position of the monitors.
I have been interested into the same some weeks ago. I send the question to the wayland IRC channel.
You can have a look at:
https://people.freedesktop.org/~cbrill/dri-log/index.php?channel=wayland&highlight_names=&date=2017-12-19
https://people.freedesktop.org/~cbrill/dri-log/index.php?channel=wayland&highlight_names=&date=2017-12-20
Here is the relevant part:
22:31 maggu2810: Is there any change to change the display / output position in weston? I am using three outputs but don't know how to configure which one if left / right of the other one.
22:33 maggu2810: ... chance to change ...
22:35 maggu2810: the output sections in weston.ini currently contains the name, the mode and the scale. I didn't find any "position" option or anything that looks like an option to modify the "order" of the displays.
07:07 pq: maggu2810, yes, not implemented yet, there were indeed some WIP patches in 2016
Perhaps you will be able to post a feature request in their mailing list. I don't think they will look for feature requests on SO ;)
I'm considering using Matlab Compiler to distribute software for a price. I'm investigating (very) simple methods to discourage re-distribution without annoying users. Any recommendations?
One thought is to email a user a license key and have them input this during the installation process to be verified on a license server. If the key matches what is on the server, the installation proceeds as usual, otherwise, a warning message is shown to inform the user to purchase another license. However, this method requires a specified function to run only during the installation process, and not thereafter (so as not to annoy the user). Is this possible using Matlab Compiler or otherwise?
I suppose I could create a file on the user's disk that the program looks for when it starts (if it exists, then it is not being run for the first time), but if the user copies the whole directory, that file would get copied too.
In order to create an effective licensing system, you have to link it to one or more properties of a user machine (MAC address, OS ID, hard disk serial numbers, CPU serial numbers, etc...).
If you don't to this, you are just going to release licenses that can be transferred from one user to another. If one user decides to spread his license file worldwide, you are doomed because everyone could potentially take that license file and use it to unlock your application.
But if you link your license files to one or more properties of a user machine, as mentioned above, you must be able to obtain these properties either:
before the user decides to buy your application;
when the user activates his license.
First Scenario
You release your software as a trial. When it is started for the first time, you set an expiration date in the registry or in a file well hidden somewhere. You check against the expiration date when the application starts and, once it is reached, you throw an error and you don't let the used play with your application anymore.
Within the application, you create a Register Now button somewhere. When it is clicked, the application retrieves the machine properties and passes them to the web page / form that will be opened to let the user perform the payment. That page will be in charge to validate the machine properties, receive the payment and, finally, deliver a valid license code based on these properties.
Within the application, you must implement the same logics that allowed your form to create the license code, because you will need to use them in order to validate the code itself every time your application starts. A pseudo-code example:
mp1 = GetMachineProperty1();
mp2 = GetMachineProperty2();
mp3 = GetMachineProperty3();
lc = GetLicenseCode();
if (~strcmp(sha1([mp1 mp2 mp3]),lc))
errordlg('Invalid license code!');
return;
end
This is the simplest path. But keep in mind that if one or more properties of the user machine change (because he changes a device or reinstalls his OS), his license will be invalidated and you will have to provide a customer assistance service that takes care of this kind of situations.
Second Scenario
This one is much harder. You will not be able to know the user's machine properties in advance. So your licensing system will work on a two-steps basis. You release a unique code (called LID for example) when the used purchases your application. Then, once the user inserts that it in your application, your application must send it back together with the machine properties. The final key (called LKey for example) is then computed and sent back to the user.
mp1 = GetMachineProperty1();
mp2 = GetMachineProperty2();
mp3 = GetMachineProperty3();
lkey = GetLicenseKey();
if (~strcmp(sha1([mp1 mp2 mp3]),lkey))
errordlg('Invalid license code!');
return;
end
Machine Properties
The first solution has been provided to you through a comment: the MachineGuid value located in the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography. It's pretty solid. But it will only work on Windows machines. Use winqueryreg to access the registry.
Another good alternative is the Window Domain Controller Security ID, which is another machine-specific unique identifier. You can retrieve it using Java code within Matlab:
wdc_sid = com.sun.security.auth.module.NTSystem.getDomainSID();
or through the Windows registry key HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy\GroupMembership. The registry approach should be the one to use if you want to maintain a certain backward compatibility with old Matlab releases. Unfortunately, the Window Domain Controller Security ID is another identifier that is available only on machines that run under Windows.
If you want to adapt your licensing system to every possible OS and environment, you have to use a more generic approach, based on universally accessible hardware properties: MAC adresses, hard disk serials and such things. As far as I know, the most reliable property is the MAC address, because its uniqueness, althrough not granted, is almost certain and it's very unfrequent to change a network adapter (there are more chances to break an hard disk actually). Retrieve the MAC adresses of the machine network adapters using Java code as follows:
mac_addrs = '';
net_int = java.net.NetworkInterface.getNetworkInterfaces();
while (net_int.hasMoreElements)
mac_addr = net_int.nextElement.getHardwareAddress();
if (~isempty(mac_addr))
mac_addrs = [mac_addrs, '-', sprintf('%.2X',typecast(mac_addr,'uint8'))];
end
end
mac_addrs = mac_addrs(2:end);
The above computation produces a character array that represents the result of the concatenation of all the MAC addresses found on the machine. Again, for compatibility reasons, this may not work on old Matlab releases, so you have to use a much more complex approach, described here.
[EDIT]
This approach to retrieve the MAC address based on the underlying OS could be easier:
switch computer('arch')
case {'maci','maci64'}
[~,a]=system('ifconfig');
c=strfind(a,'en0');if ~isempty(c),a=a(c:end);end
c=strfind(a,'en1');if ~isempty(c),a=a(1:c-1);end
% find the mac address
b=strfind(a,'ether');
mac_add=a(1,b(1)+6:b(1)+22);
case {'win32','win64'}
[~,a]=system('getmac');b=strfind(a,'=');
mac_add=a(b(end)+1:b(end)+19);
case {'glnx86','glnxa64'}
[~,a]=system('ifconfig');b=strfind(a,'Ether');
mac_add=a(1,b(1)+17:b(1)+33);
otherwise,mac_add=[];
end
I found it in the comments of this article.