About SSD1306 Intergration

[steve.hou]

Dear support, 

I am the beginner of  of the Nordic with 52840 chipset, i am try to running sdk 1.90 with zephyr os 

i am try to running this case : cfb

C:\Nordic\NCS\v1.9.0\zephyr\samples\subsys\display

always show me this error.

could you show me some tips ?

C:\Nordic\NCS\v1.9.0\zephyr\include\device.h:291:37: note: in expansion of macro 'DEVICE_NAME_GET'
291 | #define DEVICE_DT_NAME_GET(node_id) DEVICE_NAME_GET(Z_DEVICE_DT_DEV_NAME(node_id))
| ^~~~~~~~~~~~~~~
C:\Nordic\NCS\v1.9.0\zephyr\include\device.h:311:34: note: in expansion of macro 'DEVICE_DT_NAME_GET'
311 | #define DEVICE_DT_GET(node_id) (&DEVICE_DT_NAME_GET(node_id))
| ^~~~~~~~~~~~~~~~~~
d:\display1\cfb\src\main.c:20:8: note: in expansion of macro 'DEVICE_DT_GET'
20 | dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_display));

[steve.hou]

\Nordic\NCS\v1.9.0\zephyr\include\device.h:96:39: error: '__device_dts_ord_DT_CHOSEN_zephyr_display_ORD' undeclared (first use in this function)
96 | #define DEVICE_NAME_GET(name) _CONCAT(__device_, name)
| ^~~~~~~~~
C:\Nordic\NCS\v1.9.0\zephyr\include\toolchain\common.h:132:26: note: in definition of macro '_DO_CONCAT'
132 | #define _DO_CONCAT(x, y) x ## y
| ^
C:\Nordic\NCS\v1.9.0\zephyr\include\device.h:96:31: note: in expansion of macro '_CONCAT'
96 | #define DEVICE_NAME_GET(name) _CONCAT(__device_, name)
| ^~~~~~~

[Talkamynn]

Hi Steve,

It may look as a dummy question, but do you have a display connected to your board ?

steve.hou said:

dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_display));

This line means that, in your board's dts file, you have a node named "zephyr_display" that you can instantiate inside your program.

Take a look here or here for more information on dts, here for a few information about SSD1306, and here for another related topic.