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Sorry, but that's just plain wrong (and, coming from someone who criticised others for posting bogus comments about Windows, somewhat ironic too...). All 4 of the PCs I have at home are running either XP Pro or XP MCE. Two of them have external USB drives permanently attached, the other two...
Have you tried lifting the AD9833 and just having the AD5292 connected to the micro? Although I can't see anything in the 9833 datasheet which suggests it doesn't play nice with other SPI devices, experience has shown me that if you're trying to debug SPI problems with a single slave device in...
If the datasheet hasn't left anything out, then you're understanding it just fine - after power-up you send the 0x1802 command to enable RDAC updates, and then whenever you want to change the wiper position you just need to send (0x0400 | wiper pos).
As for clocking out the SDO response, this...
I haven't used this particular device, but having read through the datasheet I can only assume that your problems are being caused by the real device having some undocumented behaviour causing it not to work in accordance with the datasheet. I assume this because I can't see anything wrong with...
Yes, that's where the 0x7D comes from. If you're not getting anything when you write that data to the driver, check that you've configured the driver properly, and set the correct address first. If however you are seeing something, then please list the segments which are turned on.
CGRAM of 20x4 LCD module
Is there any reason why you can't simply combine your two bits of code, and load the CGRAM as part of the LCD initialisation routines in the firmware you use to display your data?
Presumably you've read Atmel's app note 311? If not, that might give you a bit of a nudge in the right direction.
As far as Codevision goes, the I2C tab in CodeWizard is used to configure a bit-banged I2C interface for those AVRs which don't have hardware I2C interfaces, whereas the 2 Wire...
Not true. In addition to all the test builds released to the official testing teams, Microsoft also released a beta test version to the public back in January, so Microsoft was able to gather quite a lot of info about Win 7 prior to its RTM date. There was also the release candidate made...
That seems OK...
...as does this. However...
No, no, and once again NO! Pin 18 is another segment line controlling the battery icon in the lower-right corner of the display. You should NEVER apply DC power directly to a bare LCD like this, so before you go any further you need to power...
That depends on what the LCD duty cycle is (static drive, 1/2, 1/3, 1/4 etc), and in what order you've connected the COM and SEG lines from the LCD to the driver. Without knowing how the LCD is internally wired up, and how it's connected to the driver, it's impossible to say what you'd need to...
Post your latest code so we can check that for any problems - use the code tags to avoid the formatting being messed up.
One other thing to check is that you've set the voltage on the VLCD pin correctly - if that's too low then the display will appear blank no matter what the driver is doing...
I don't know if there's a better way of doing it, but that's basically how we used to do it at the first company I worked for, where we were using RS485 to network HVAC controllers. We had individual RS485 networks of up to 127 slaves (we were using 1/4 load drivers), with network bridge...
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