I am working on programming the Lilygo T-Deck. I have chosen CircuitPython because of its flexibility, which is welcome for conducting tests.
In this module, there are two systems that operate on the SPI bus: the screen (ST7789) and a LORA transceiver (SX1262).
During the boot of CircuitPython on this board, the REPL activates on the screen, so the SPI is initialized for the screen. If I want to send data to the LORA module, I need to have the name of the object managing the SPI bus.
For example, if I make the following code call to prepare the SPI for using the LORA module:
import busio
import board
testSPI = busio.SPI(clock = board.SCK, MOSI=board.MOSI, MISO=board.MISO)
The error that comes up is the following:
ValueError: IO40 en cours d'utilisation
That makes perfect sense since the bus is used for the screen.
I can, of course, use the command
displayio.release_displays()
But that would force me to redo its initialization. However, if I could access the busio.SPI object used for the REPL, I could simply use the CS outputs to operate both the screen and the LORA module.
Do you have any ideas?
I am working on programming the Lilygo T-Deck. I have chosen CircuitPython because of its flexibility, which is welcome for conducting tests.
In this module, there are two systems that operate on the SPI bus: the screen (ST7789) and a LORA transceiver (SX1262).
During the boot of CircuitPython on this board, the REPL activates on the screen, so the SPI is initialized for the screen. If I want to send data to the LORA module, I need to have the name of the object managing the SPI bus.
For example, if I make the following code call to prepare the SPI for using the LORA module:
The error that comes up is the following:
ValueError: IO40 en cours d'utilisationThat makes perfect sense since the bus is used for the screen.
I can, of course, use the command
displayio.release_displays()But that would force me to redo its initialization. However, if I could access the busio.SPI object used for the REPL, I could simply use the CS outputs to operate both the screen and the LORA module.
Do you have any ideas?