Hi all,
I'm trying to use the nrf Connect SDK and configure PWM to use in one pin from nordif nrf52DK. The final chip will be the nrf52810. I have configured the builder to use the nrf52dk_nrf52810. I was using the "blinky" example and trying to add a PWM configuration to it. I have this configurations:
prj.conf:
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# PWM
CONFIG_PWM=y
CONFIG_PWM_NRFX=y
nrf52dk_nrf52810.overlay:
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/ {
gpiocustom {
compatible = "gpio-keys";
gpiocus0: gpiocus_0 {
gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
label = "Custom gpio 11";
};
gpiocus1: gpiocus_1 {
gpios = <&gpio0 12 GPIO_ACTIVE_LOW>;
label = "Custom gpio 12";
};
};
soc {
pwm0: pwm@4001c000 {
compatible = "nordic,nrf-pwm";
reg = <0x4001c000 0x1000>;
label = "PWM_0";
ch0-pin = <22>;
#pwm-cells = <3>;
};
Anyone can tell me if the sw_pwm needs to be used to generate the pwm? or only with the pwm is enough?
I added this line in the main.c:
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#define DT_ALIAS_PWM_0_LABEL DT_ALIAS(pwm0)
And then, when I try to compile I get this error:
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In file included from C:\ncs\v2.0.0\zephyr\include\zephyr\devicetree.h:19,
from C:\ncs\v2.0.0\zephyr\include\zephyr\arch\arm\aarch32\arch.h:20,
from C:\ncs\v2.0.0\zephyr\include\zephyr\arch\cpu.h:19,
from C:\ncs\v2.0.0\zephyr\include\zephyr\kernel_includes.h:33,
from C:\ncs\v2.0.0\zephyr\include\zephyr\kernel.h:17,
from C:\ncs\v2.0.0\zephyr\include\zephyr\zephyr.h:18,
from c:\nordics\blinky\src\main.c:7:
../src/main.c: In function 'main':
c:\nordics\blinky\build_2\zephyr\include\generated\devicetree_unfixed.h:4892:36: error: 'DT_N_S_soc_S_pwm_4001c000' undeclared (first use in this function); did you mean 'DT_N_S_soc_S_pwm_4001c000_ORD'?
4892 | #define DT_N_ALIAS_pwm0 DT_N_S_soc_S_pwm_4001c000
| ^~~~~~~~~~~~~~~~~~~~~~~~~
C:\ncs\v2.0.0\zephyr\include\zephyr\devicetree.h:2991:24: note: in expansion of macro 'DT_N_ALIAS_pwm0'
2991 | #define DT_CAT(a1, a2) a1 ## a2
| ^~
C:\ncs\v2.0.0\zephyr\include\zephyr\devicetree.h:213:25: note: in expansion of macro 'DT_CAT'
213 | #define DT_ALIAS(alias) DT_CAT(DT_N_ALIAS_, alias)
| ^~~~~~
c:\nordics\blinky\src\main.c:20:30: note: in expansion of macro 'DT_ALIAS'
20 | #define DT_ALIAS_PWM_0_LABEL DT_ALIAS(pwm0)
How can I solve it? Also I have tried the nRF5 SDK and it was really easy to get the PWM working, but I will need to use zephyr to implement a bootloader in the future.
Hope you can help me.
Best regards
