Picaso Display Modules
Can I use a higher-capacity microSD card with Picaso displays?
Yes. You should be able to use a microSD card higher than 4GB.
However, keep in mind that Picaso displays only supports FAT16 which has a maximum of 4GB space. The rest of the unused space on the SD card can be accessed as RAW.
You will need to format the SD card appropriately using RMPET.
To use this tool:
- Open or create a new Workshop4 project
- Go to Tools menu and open RMPET
- Follow the instructions provided by the tool
Does Picaso display modules support CANBUS?
No. Picaso display modules do not directly support CANBUS.
Does Picaso display modules support RS485?
No. Picaso display modules do not directly support RS485.
However, you can use MOTG-RS485 or similar modules to connect a Picaso display via RS485. This will require one of the COM ports and a GPIO pin.
When using a gen4-uLCD Picaso display, it is advisable to use gen4-MOTG-AC3. This allows easy connectivity with the MOTG-RS485 through Picaso's COM1.
When using a non-gen4 uLCD Picaso display, a MOTG-Breadtooth can be used instead.
Does Picaso display modules support RS232?
No. Picaso display modules do not directly support RS232.
However, you can use MOTG-RS232 or similar modules to connect a Picaso display via RS232. This will require one of the COM ports.
When using a gen4-uLCD Picaso display, it is advisable to use gen4-MOTG-AC3. This allows easy connectivity with the MOTG-RS232 through Picaso's COM1.
When using a non-gen4 uLCD Picaso display, a MOTG-Breadtooth can be used instead.
Does Picaso display modules support I2C?
Yes. Picaso display modules support I2C. However, it only supports I2C Master mode. The display can't behave as an I2C slave.
Does Picaso display modules support SPI?
Yes. Picaso graphics processor supports SPI. However, this is commonly used to utilize a microSD card connected to Picaso display modules.
Is it recommended to download/run the 4DGL program from the RAM during Picaso development stages?
Yes, it is desirable to download/run the program from RAM to eliminate unnecessary FLASH write cycles.
Can I access folders in the FAT formatted microSD card using Picaso?
No, you cannot use folders in the microSD card with the Picaso based display modules. Files are only accessible from the root folder.
I'm out of program space in my Picaso display, what can I do?
You can try utilizing 4FN and 4XE files. These will allow you to compile 4DGL code and save them to the microSD. These files can be called/run when needed by your main program.
After playing a WAV file I hear a high pitch sound, how can I stop that?
Use pin_Set(..) command to turn the Audio Amplifier off after playing the WAV file.
At what rate can I scan the GPIOs of the Picaso through 4DGL code?
You can scan the GPIOs at a rate of about once every 250usec.
Can I save my variables in to the internal flash of a Picaso processor?
No, you can't. If you want to save information permanently, you should save it to the microSD card.
Can I use custom displays with the Picaso processor?
No, unfortunately, there are so many variants of the display driver ICs that it is difficult to have a generic PmmC file with external display settings. Picaso modules need a specific PmmC file with the display initialization settings fully built in.
If you're interested in using a 4D graphics processor with a custom display, please submit a ticket to contact technical support team.
Does Picaso processor support 8-bit images?
No, it does not. The Picaso processor only supports 16-bit images.
Is 1-Wire supported by Picaso modules?
No, it does not support Dallas One-Wire.
What is the maximum baud rate I can achieve with a Picaso display module?
Picaso display modules support up to 600K Baud.