Developing a device based on the nrf5340/nrf7002 pair, with a user interface.
I decided to use the Nordic 'buttons' and 'click-buttons' modules from the CAF framework for my device button handling.
This worked fine on the dev board (nrf5340DK).
However, on the real board, we used a MCP23017 ioexpander for the button IOs (there are never enough direct gpios, especially when the nrf7002 interface uses up 11 all by itself...).
In principle, it seems I just update the DTS to change the gpio controller from gpio0 to ioexp0, and its all good...
however, when compiling with this DTS I get:
connect/nrf/subsys/caf/modules/buttons.c
In file included from C:/work/dev/nordic_connect/zephyr/include/zephyr/arch/arm/arch.h:20,
from C:/work/dev/nordic_connect/zephyr/include/zephyr/arch/cpu.h:19,
from C:/work/dev/nordic_connect/zephyr/include/zephyr/kernel_includes.h:37,
from C:/work/dev/nordic_connect/zephyr/include/zephyr/kernel.h:17,
from C:/work/dev/nordic_connect/nrf/subsys/caf/modules/buttons.c:9:
C:/work/dev/if-device-nrf53/cc1-med/build/zephyr/include/generated/devicetree_generated.h:2424:52: error: 'DT_N_S_soc_S_peripheral_50000000_S_i2c_9000_S_mcp23017_20_P_port' undeclared here (not in a function); did you mean 'DT_N_S_soc_S_peripheral_50000000_S_i2c_9000_S_mcp23017_20_P_reg'?
2424 | #define DT_N_S_buttons_S_button_0_P_gpios_IDX_0_PH DT_N_S_soc_S_peripheral_50000000_S_i2c_9000_S_mcp23017_20
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
C:/work/dev/nordic_connect/zephyr/include/zephyr/devicetree.h:4343:29: note: in definition of macro 'DT_CAT3'
4343 | #define DT_CAT3(a1, a2, a3) a1 ## a2 ## a3
| ^~
C:/work/dev/if-device-nrf53/cc1-med/configuration/cc1medv1_nrf5340_cpuapp/cc1_med_buttons_def.h:32:19: note: in expansion of macro 'DT_PROP'
32 | { .port = DT_PROP(DT_GPIO_CTLR(DT_ALIAS(butt_left), gpios), port), .pin = DT_GPIO_PIN(DT_ALIAS(butt_left), gpios) }, // 'left' button
| ^~~~~~~
C:/work/dev/nordic_connect/zephyr/include/zephyr/devicetree.h:4349:41: note: in expansion of macro 'DT_N_S_buttons_S_button_0_P_gpios_IDX_0_PH'
4349 | #define DT_CAT6(a1, a2, a3, a4, a5, a6) a1 ## a2 ## a3 ## a4 ## a5 ## a6
| ^~
C:/work/dev/nordic_connect/zephyr/include/zephyr/devicetree.h:1592:9: note: in expansion of macro 'DT_CAT6'
1592 | DT_CAT6(node_id, _P_, prop, _IDX_, idx, _PH)
| ^~~~~~~
C:/work/dev/nordic_connect/zephyr/include/zephyr/devicetree/gpio.h:54:9: note: in expansion of macro 'DT_PHANDLE_BY_IDX'
54 | DT_PHANDLE_BY_IDX(node_id, gpio_pha, idx)
| ^~~~~~~~~~~~~~~~~
C:/work/dev/nordic_connect/zephyr/include/zephyr/devicetree/gpio.h:66:9: note: in expansion of macro 'DT_GPIO_CTLR_BY_IDX'
66 | DT_GPIO_CTLR_BY_IDX(node_id, gpio_pha, 0)
| ^~~~~~~~~~~~~~~~~~~
C:/work/dev/if-device-nrf53/cc1-med/configuration/cc1medv1_nrf5340_cpuapp/cc1_med_buttons_def.h:32:27: note: in expansion of macro 'DT_GPIO_CTLR'
32 | { .port = DT_PROP(DT_GPIO_CTLR(DT_ALIAS(butt_left), gpios), port), .pin = DT_GPIO_PIN(DT_ALIAS(butt_left), gpios) }, // 'left' button
| ^~~~~~~~~~~~
C:/work/dev/nordic_connect/zephyr/include/zephyr/devicetree.h:4341:24: note: in expansion of macro 'DT_N_ALIAS_butt_lef'
4341 | #define DT_CAT(a1, a2) a1 ## a2
| ^~
C:/work/dev/nordic_connect/zephyr/include/zephyr/devicetree.h:238:25: note: in expansion of macro 'DT_CAT'
238 | #define DT_ALIAS(alias) DT_CAT(DT_N_ALIAS_, alias)
| ^~~~~~
C:/work/dev/if-device-nrf53/cc1-med/configuration/cc1medv1_nrf5340_cpuapp/cc1_med_buttons_def.h:32:40: note: in expansion of macro 'DT_ALIAS'
32 | { .port = DT_PROP(DT_GPIO_CTLR(DT_ALIAS(butt_left), gpios), port), .pin = DT_GPIO_PIN(DT_ALIAS(butt_left), gpios) }, // 'left' button
| ^~~~~~~~
Does this mean the CAF buttons module cannot be used with the MCP23xxx driver? I thought the whole point of this insanely complicated DTS stuff was to make this sort of hw transition easy???
hoping I have just misunderstood...
