lpuart in hardware is not compiling for feather_nrf9160

vinifr

Hello,
I am able to build the lpuart sample in hardware folder for nrf9160dk_nrf9160_ns but not for circuitdojo_feather_nrf9160_ns. Is possible to port to feather?

Also, I am would like to use UART1 and UART2 instead LPUART. Is the same thing, i.e. UART1 and UART2 are LPUART?
Thanks.

olgamill55

vinifr What error do you get when you build for circuitdojo_feather_nrf9160_ns ?

jaredwolff

vinifr you need another device that is capable of using the same driver on the other side. Here’s an example of how I use it with doing HCI UART with a nRF52840:

nRF91 Overlay:

/ {
	chosen {
		zephyr,bt-uart=&lpuart;
	};

	nrf52840_reset: gpio-reset {
		compatible = "nordic,nrf52840-reset";
		status = "okay";
		gpios = <&gpio0 17 GPIO_ACTIVE_LOW>;
	};
};

&uart0 {
	current-speed = <1000000>;
	status = "okay";
	tx-pin = <21>;
	rx-pin = <22>;
	/delete-property/ rts-pin;
	/delete-property/ cts-pin;
	/delete-property/ hw-flow-control;

	lpuart: nrf-sw-lpuart {
		compatible = "nordic,nrf-sw-lpuart";
		status = "okay";
		label = "LPUART";
		req-pin = <15>;
		rdy-pin = <19>;
	};
};

&gpiote {
	interrupts = <49 NRF_DEFAULT_IRQ_PRIORITY>;
};

Here’s what it looks like on the other side.

nRF52840 Overlay:

&uart0{
	current-speed = <1000000>;
	status = "okay";
	tx-pin = <17>;
	rx-pin = <15>;
	/delete-property/ rts-pin;
	/delete-property/ cts-pin;
	/delete-property/ hw-flow-control;

	lpuart: nrf-sw-lpuart {
		compatible = "nordic,nrf-sw-lpuart";
		status = "okay";
		label = "LPUART";
		req-pin = <13>;
		rdy-pin = <12>;
	};
};

/ {
	chosen {
		zephyr,bt-c2h-uart=&lpuart;
	};
};

&gpiote {
	interrupts = <6 NRF_DEFAULT_IRQ_PRIORITY>;
};

Also some important configurations:

CONFIG_UART_0_ASYNC=y
CONFIG_UART_0_INTERRUPT_DRIVEN=n
CONFIG_UART_0_NRF_HW_ASYNC=y
CONFIG_UART_0_NRF_HW_ASYNC_TIMER=1
CONFIG_NRF_SW_LPUART=y
CONFIG_NRF_SW_LPUART_INT_DRIVEN=y

The above will be slightly different depending on which UART you’re using.

Also, I am would like to use UART1 and UART2 instead LPUART. Is the same thing, i.e. UART1 and UART2 are LPUART?

That’s totally fine too. Simply map the UART interface to the pins you want to use and make sure it’s enabled. LPUART is optional and not defined by default AFAIK.

vinifr

In file included from /home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/toolchain/gcc.h:89,
                 from /home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/toolchain.h:50,
                 from /home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/init.h:13,
                 from /home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/device.h:13,
                 from /home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/drivers/uart.h:26,
                 from /home/som/projs/ams/nrf9160/ncs/nrf/drivers/serial/uart_nrf_sw_lpuart.c:7:
/home/som/projs/ams/nrf9160/ncs/nrf/drivers/serial/uart_nrf_sw_lpuart.c: In function 'lpuart_init':
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/device.h:83:41: error: '__device_dts_ord_DT_N_INST_0_nordic_nrf_sw_lpuart_BUS_ORD' undeclared (first use in this function)
   83 | #define DEVICE_NAME_GET(dev_id) _CONCAT(__device_, dev_id)
      |                                         ^~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/toolchain/common.h:132:26: note: in definition of macro '_DO_CONCAT'
  132 | #define _DO_CONCAT(x, y) x ## y
      |                          ^
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/device.h:83:33: note: in expansion of macro '_CONCAT'
   83 | #define DEVICE_NAME_GET(dev_id) _CONCAT(__device_, dev_id)
      |                                 ^~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/device.h:209:37: note: in expansion of macro 'DEVICE_NAME_GET'
  209 | #define DEVICE_DT_NAME_GET(node_id) DEVICE_NAME_GET(Z_DEVICE_DT_DEV_ID(node_id))
      |                                     ^~~~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/device.h:226:34: note: in expansion of macro 'DEVICE_DT_NAME_GET'
  226 | #define DEVICE_DT_GET(node_id) (&DEVICE_DT_NAME_GET(node_id))
      |                                  ^~~~~~~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/nrf/drivers/serial/uart_nrf_sw_lpuart.c:970:22: note: in expansion of macro 'DEVICE_DT_GET'
  970 |         data->uart = DEVICE_DT_GET(DT_INST_BUS(0));
      |                      ^~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/device.h:83:41: note: each undeclared identifier is reported only once for each function it appears in
   83 | #define DEVICE_NAME_GET(dev_id) _CONCAT(__device_, dev_id)
      |                                         ^~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/toolchain/common.h:132:26: note: in definition of macro '_DO_CONCAT'
  132 | #define _DO_CONCAT(x, y) x ## y
      |                          ^
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/device.h:83:33: note: in expansion of macro '_CONCAT'
   83 | #define DEVICE_NAME_GET(dev_id) _CONCAT(__device_, dev_id)
      |                                 ^~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/device.h:209:37: note: in expansion of macro 'DEVICE_NAME_GET'
  209 | #define DEVICE_DT_NAME_GET(node_id) DEVICE_NAME_GET(Z_DEVICE_DT_DEV_ID(node_id))
      |                                     ^~~~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/device.h:226:34: note: in expansion of macro 'DEVICE_DT_NAME_GET'
  226 | #define DEVICE_DT_GET(node_id) (&DEVICE_DT_NAME_GET(node_id))
      |                                  ^~~~~~~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/nrf/drivers/serial/uart_nrf_sw_lpuart.c:970:22: note: in expansion of macro 'DEVICE_DT_GET'
  970 |         data->uart = DEVICE_DT_GET(DT_INST_BUS(0));
      |                      ^~~~~~~~~~~~~
In file included from /home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/device.h:12:
/home/som/projs/ams/nrf9160/ncs/nrf/drivers/serial/uart_nrf_sw_lpuart.c: At top level:
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:326:40: error: 'DT_N_INST_0_nordic_nrf_sw_lpuart_P_req_pin' undeclared here (not in a function); did you mean 'DT_N_INST_0_nordic_nrf_uarte'?
  326 | #define DT_INST(inst, compat) UTIL_CAT(DT_N_INST, DT_DASH(inst, compat))
      |                                        ^~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:3903:29: note: in definition of macro 'DT_CAT3'
 3903 | #define DT_CAT3(a1, a2, a3) a1 ## a2 ## a3
      |                             ^~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:3239:34: note: in expansion of macro 'DT_PROP'
 3239 | #define DT_INST_PROP(inst, prop) DT_PROP(DT_DRV_INST(inst), prop)
      |                                  ^~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/sys/util_internal.h:104:26: note: in expansion of macro 'UTIL_PRIMITIVE_CAT'
  104 | #define UTIL_CAT(a, ...) UTIL_PRIMITIVE_CAT(a, __VA_ARGS__)
      |                          ^~~~~~~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:326:31: note: in expansion of macro 'UTIL_CAT'
  326 | #define DT_INST(inst, compat) UTIL_CAT(DT_N_INST, DT_DASH(inst, compat))
      |                               ^~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:3048:27: note: in expansion of macro 'DT_INST'
 3048 | #define DT_DRV_INST(inst) DT_INST(inst, DT_DRV_COMPAT)
      |                           ^~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:3239:42: note: in expansion of macro 'DT_DRV_INST'
 3239 | #define DT_INST_PROP(inst, prop) DT_PROP(DT_DRV_INST(inst), prop)
      |                                          ^~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/nrf/drivers/serial/uart_nrf_sw_lpuart.c:1069:20: note: in expansion of macro 'DT_INST_PROP'
 1069 |         .req_pin = DT_INST_PROP(0, req_pin),
      |                    ^~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:326:40: error: 'DT_N_INST_0_nordic_nrf_sw_lpuart_P_rdy_pin' undeclared here (not in a function)
  326 | #define DT_INST(inst, compat) UTIL_CAT(DT_N_INST, DT_DASH(inst, compat))
      |                                        ^~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:3903:29: note: in definition of macro 'DT_CAT3'
 3903 | #define DT_CAT3(a1, a2, a3) a1 ## a2 ## a3
      |                             ^~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:3239:34: note: in expansion of macro 'DT_PROP'
 3239 | #define DT_INST_PROP(inst, prop) DT_PROP(DT_DRV_INST(inst), prop)
      |                                  ^~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/sys/util_internal.h:104:26: note: in expansion of macro 'UTIL_PRIMITIVE_CAT'
  104 | #define UTIL_CAT(a, ...) UTIL_PRIMITIVE_CAT(a, __VA_ARGS__)
      |                          ^~~~~~~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:326:31: note: in expansion of macro 'UTIL_CAT'
  326 | #define DT_INST(inst, compat) UTIL_CAT(DT_N_INST, DT_DASH(inst, compat))
      |                               ^~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:3048:27: note: in expansion of macro 'DT_INST'
 3048 | #define DT_DRV_INST(inst) DT_INST(inst, DT_DRV_COMPAT)
      |                           ^~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:3239:42: note: in expansion of macro 'DT_DRV_INST'
 3239 | #define DT_INST_PROP(inst, prop) DT_PROP(DT_DRV_INST(inst), prop)
      |                                          ^~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/nrf/drivers/serial/uart_nrf_sw_lpuart.c:1070:20: note: in expansion of macro 'DT_INST_PROP'
 1070 |         .rdy_pin = DT_INST_PROP(0, rdy_pin)
      |                    ^~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:190:36: error: 'DT_N_NODELABEL_lpuart_PARENT_IRQ_IDX_0_VAL_priority' undeclared here (not in a function)
  190 | #define DT_NODELABEL(label) DT_CAT(DT_N_NODELABEL_, label)
      |                                    ^~~~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/toolchain/gcc.h:78:51: note: in definition of macro 'BUILD_ASSERT'
   78 | #define BUILD_ASSERT(EXPR, MSG...) _Static_assert(EXPR, "" MSG)
      |                                                   ^~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:2218:9: note: in expansion of macro 'DT_CAT5'
 2218 |         DT_CAT5(node_id, _IRQ_IDX_, idx, _VAL_, cell)
      |         ^~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:2245:31: note: in expansion of macro 'DT_IRQ_BY_IDX'
 2245 | #define DT_IRQ(node_id, cell) DT_IRQ_BY_IDX(node_id, 0, cell)
      |                               ^~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/nrf/drivers/serial/uart_nrf_sw_lpuart.c:1108:14: note: in expansion of macro 'DT_IRQ'
 1108 | BUILD_ASSERT(DT_IRQ(DT_PARENT(DT_NODELABEL(lpuart)), priority) ==
      |              ^~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/sys/util_internal.h:104:26: note: in expansion of macro 'UTIL_PRIMITIVE_CAT'
  104 | #define UTIL_CAT(a, ...) UTIL_PRIMITIVE_CAT(a, __VA_ARGS__)
      |                          ^~~~~~~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:351:28: note: in expansion of macro 'UTIL_CAT'
  351 | #define DT_PARENT(node_id) UTIL_CAT(node_id, _PARENT)
      |                            ^~~~~~~~
/home/som/projs/ams/nrf9160/ncs/nrf/drivers/serial/uart_nrf_sw_lpuart.c:1108:21: note: in expansion of macro 'DT_PARENT'
 1108 | BUILD_ASSERT(DT_IRQ(DT_PARENT(DT_NODELABEL(lpuart)), priority) ==
      |                     ^~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:190:29: note: in expansion of macro 'DT_CAT'
  190 | #define DT_NODELABEL(label) DT_CAT(DT_N_NODELABEL_, label)
      |                             ^~~~~~
/home/som/projs/ams/nrf9160/ncs/nrf/drivers/serial/uart_nrf_sw_lpuart.c:1108:31: note: in expansion of macro 'DT_NODELABEL'
 1108 | BUILD_ASSERT(DT_IRQ(DT_PARENT(DT_NODELABEL(lpuart)), priority) ==
      |                               ^~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:190:36: error: expression in static assertion is not an integer
  190 | #define DT_NODELABEL(label) DT_CAT(DT_N_NODELABEL_, label)
      |                                    ^~~~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/toolchain/gcc.h:78:51: note: in definition of macro 'BUILD_ASSERT'
   78 | #define BUILD_ASSERT(EXPR, MSG...) _Static_assert(EXPR, "" MSG)
      |                                                   ^~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:2218:9: note: in expansion of macro 'DT_CAT5'
 2218 |         DT_CAT5(node_id, _IRQ_IDX_, idx, _VAL_, cell)
      |         ^~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:2245:31: note: in expansion of macro 'DT_IRQ_BY_IDX'
 2245 | #define DT_IRQ(node_id, cell) DT_IRQ_BY_IDX(node_id, 0, cell)
      |                               ^~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/nrf/drivers/serial/uart_nrf_sw_lpuart.c:1108:14: note: in expansion of macro 'DT_IRQ'
 1108 | BUILD_ASSERT(DT_IRQ(DT_PARENT(DT_NODELABEL(lpuart)), priority) ==
      |              ^~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/sys/util_internal.h:104:26: note: in expansion of macro 'UTIL_PRIMITIVE_CAT'
  104 | #define UTIL_CAT(a, ...) UTIL_PRIMITIVE_CAT(a, __VA_ARGS__)
      |                          ^~~~~~~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:351:28: note: in expansion of macro 'UTIL_CAT'
  351 | #define DT_PARENT(node_id) UTIL_CAT(node_id, _PARENT)
      |                            ^~~~~~~~
/home/som/projs/ams/nrf9160/ncs/nrf/drivers/serial/uart_nrf_sw_lpuart.c:1108:21: note: in expansion of macro 'DT_PARENT'
 1108 | BUILD_ASSERT(DT_IRQ(DT_PARENT(DT_NODELABEL(lpuart)), priority) ==
      |                     ^~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:190:29: note: in expansion of macro 'DT_CAT'
  190 | #define DT_NODELABEL(label) DT_CAT(DT_N_NODELABEL_, label)
      |                             ^~~~~~
/home/som/projs/ams/nrf9160/ncs/nrf/drivers/serial/uart_nrf_sw_lpuart.c:1108:31: note: in expansion of macro 'DT_NODELABEL'
 1108 | BUILD_ASSERT(DT_IRQ(DT_PARENT(DT_NODELABEL(lpuart)), priority) ==
      |                               ^~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:190:36: error: 'DT_N_NODELABEL_lpuart_FULL_NAME' undeclared here (not in a function)
  190 | #define DT_NODELABEL(label) DT_CAT(DT_N_NODELABEL_, label)
      |                                    ^~~~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/device.h:857:25: note: in definition of macro 'Z_DEVICE_INIT'
  857 |                 .name = name_,                                                 \
      |                         ^~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/device.h:940:9: note: in expansion of macro 'Z_DEVICE_BASE_DEFINE'
  940 |         Z_DEVICE_BASE_DEFINE(node_id, dev_id, name, pm, data, config, level,   \
      |         ^~~~~~~~~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/device.h:178:9: note: in expansion of macro 'Z_DEVICE_DEFINE'
  178 |         Z_DEVICE_DEFINE(node_id, Z_DEVICE_DT_DEV_ID(node_id),                  \
      |         ^~~~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/sys/util_internal.h:69:53: note: in expansion of macro '__DEBRACKET'
   69 | #define __GET_ARG2_DEBRACKET(ignore_this, val, ...) __DEBRACKET val
      |                                                     ^~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/sys/util_internal.h:64:9: note: in expansion of macro '__GET_ARG2_DEBRACKET'
   64 |         __GET_ARG2_DEBRACKET(one_or_two_args _if_code, _else_code)
      |         ^~~~~~~~~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/sys/util_internal.h:59:9: note: in expansion of macro '__COND_CODE'
   59 |         __COND_CODE(_XXXX##_flag, _if_1_code, _else_code)
      |         ^~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/sys/util_macro.h:157:9: note: in expansion of macro 'Z_COND_CODE_1'
  157 |         Z_COND_CODE_1(_flag, _if_1_code, _else_code)
      |         ^~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:754:9: note: in expansion of macro 'COND_CODE_1'
  754 |         COND_CODE_1(DT_NODE_HAS_PROP(node_id, prop), \
      |         ^~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/device.h:144:9: note: in expansion of macro 'DT_PROP_OR'
  144 |         DT_PROP_OR(node_id, label, DT_NODE_FULL_NAME(node_id))
      |         ^~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:514:36: note: in expansion of macro 'DT_CAT'
  514 | #define DT_NODE_FULL_NAME(node_id) DT_CAT(node_id, _FULL_NAME)
      |                                    ^~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/device.h:144:36: note: in expansion of macro 'DT_NODE_FULL_NAME'
  144 |         DT_PROP_OR(node_id, label, DT_NODE_FULL_NAME(node_id))
      |                                    ^~~~~~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/device.h:179:25: note: in expansion of macro 'DEVICE_DT_NAME'
  179 |                         DEVICE_DT_NAME(node_id), init_fn, pm, data, config,    \
      |                         ^~~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/nrf/drivers/serial/uart_nrf_sw_lpuart.c:1112:1: note: in expansion of macro 'DEVICE_DT_DEFINE'
 1112 | DEVICE_DT_DEFINE(DT_NODELABEL(lpuart), lpuart_init, NULL,
      | ^~~~~~~~~~~~~~~~
/home/som/projs/ams/nrf9160/ncs/zephyr/include/zephyr/devicetree.h:190:29: note: in expansion of macro 'DT_CAT'
  190 | #define DT_NODELABEL(label) DT_CAT(DT_N_NODELABEL_, label)
      |                             ^~~~~~
/home/som/projs/ams/nrf9160/ncs/nrf/drivers/serial/uart_nrf_sw_lpuart.c:1112:18: note: in expansion of macro 'DT_NODELABEL'
 1112 | DEVICE_DT_DEFINE(DT_NODELABEL(lpuart), lpuart_init, NULL,
      |                  ^~~~~~~~~~~~
ninja: build stopped: subcommand failed.
FATAL ERROR: command exited with status 1: /snap/bin/cmake --build /home/som/projs/ams/nrf9160/ncs/nrf/samples/peripheral/lpuart/build

jaredwolff

vinifr yea it can’t find the node named lpuart maybe define one first? (see my earlier reply) Also check out my videos on device tree if you haven’t already:

https://www.youtube.com/watch?v=5UUS44S4kaQ
https://www.youtube.com/watch?v=uAG5EVSWGKs

vinifr

Sorry, one more error.

In file included from /home/vini/projs/ams_projs/nrf9160/ncs/zephyr/include/zephyr/toolchain.h:50,
                 from /home/vini/projs/ams_projs/nrf9160/ncs/zephyr/include/zephyr/init.h:13,
                 from /home/vini/projs/ams_projs/nrf9160/ncs/zephyr/include/zephyr/device.h:13,
                 from /home/vini/projs/ams_projs/nrf9160/ncs/zephyr/include/zephyr/drivers/uart.h:26,
                 from /home/vini/projs/ams_projs/nrf9160/ncs/nrf/drivers/serial/uart_nrf_sw_lpuart.c:7:
/home/vini/projs/ams_projs/nrf9160/ncs/zephyr/include/zephyr/toolchain/gcc.h:78:36: error: static assertion failed: "UARTE and GPIOTE interrupt priority must match."
   78 | #define BUILD_ASSERT(EXPR, MSG...) _Static_assert(EXPR, "" MSG)
      |                                    ^~~~~~~~~~~~~~
/home/vini/projs/ams_projs/nrf9160/ncs/nrf/drivers/serial/uart_nrf_sw_lpuart.c:1108:1: note: in expansion of macro 'BUILD_ASSERT'
 1108 | BUILD_ASSERT(DT_IRQ(DT_PARENT(DT_NODELABEL(lpuart)), priority) ==
      | ^~~~~~~~~~~~
ninja: build stopped: subcommand failed.

Device tree code:

&uart1 {
	current-speed = <115200>;
	pinctrl-0 = <&uart1_default>;
	pinctrl-1 = <&uart1_sleep>;
	pinctrl-names = "default", "sleep";
	status = "okay";
	tx-pin = <21>;
	rx-pin = <22>;
	lpuart: nrf-sw-lpuart {
		compatible = "nordic,nrf-sw-lpuart";
		status = "okay";
		label = "LPUART";
		req-pin = <15>;
		rdy-pin = <19>;
	};
};

jaredwolff

You’re missing

&gpiote {
	interrupts = <6 NRF_DEFAULT_IRQ_PRIORITY>;
};

I didn’t omit it since it’s important 😄