samples: add nrf spi snippet

Add snippet for nrfx spi driver

Signed-off-by: Krzysztof Taborowski <[email protected]>

Author: ktaborowski

Kconfig

@@ -188,7 +188,13 @@ config SIDEWALK_CRYPTO_PSA_KEY_STORAGE
 	  it must be enabled in every subsequent build.
 	  Otherwise, the keys will not be found and Sidewalk will not start.
 
-if SIDEWALK_SPI_BUS
+config SIDEWALK_SPI_BUS_NRFX
+	bool "Use nrfx spi bus"
+	depends on SOC_NRF52840
+	help
+	  Use nrfx spi bus for Sidewalk spi bus.
+
+if SIDEWALK_SPI_BUS_NRFX
 
 choice SIDEWALK_NRFX_SPI_INSTANCE_ID
 	prompt "Instance of the NRX SPI driver"
@@ -219,7 +225,7 @@ config SIDEWALK_NRFX_SPI_ID
 	default 1 if SIDEWALK_NRFX_SPI1
 	default 2
 
-endif # SIDEWALK_SPI_BUS
+endif # SIDEWALK_SPI_BUS_NRFX
 
 config SIDEWALK_USE_PREBUILTS
 	bool "Use prebuilt Sidewalk libraries"

samples/sid_end_device/snippets/spi_nrfx/boards/nrf52840dk_nrf52840.overlay

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2024 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+&spi2 {
+	status = "disabled";
+};
+
+/{
+	nrfx_spi_gpios{
+		compatible = "gpio-keys";
+		nrfx_spi_sck: sck {
+			gpios = <&gpio1 0xF GPIO_ACTIVE_HIGH>;
+			label = "spi_sck";
+		};
+		nrfx_spi_miso: miso {
+			gpios = <&gpio1 0xE GPIO_ACTIVE_HIGH>;
+			label = "spi_miso";
+		};
+		nrfx_spi_mosi: mosi {
+			gpios = <&gpio1 0xD GPIO_ACTIVE_HIGH>;
+			label = "spi_mosi";
+		};
+		nrfx_spi_cs: cs {
+			gpios = <&gpio1 0x8 GPIO_ACTIVE_LOW>;
+			label = "spi_cs";
+		};
+	};
+};

samples/sid_end_device/snippets/spi_nrfx/snippet.yml

@@ -0,0 +1,8 @@
+name: spi_nrfx
+append:
+  EXTRA_CONF_FILE: spi_nrfx.conf
+
+boards:
+  nrf52840dk/nrf52840:
+    append:
+      EXTRA_DTC_OVERLAY_FILE: boards/nrf52840dk_nrf52840.overlay

samples/sid_end_device/snippets/spi_nrfx/spi_nrfx.conf

@@ -0,0 +1,7 @@
+#
+# Copyright (c) 2024 Nordic Semiconductor ASA
+#
+# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+#
+
+CONFIG_SIDEWALK_SPI_BUS_NRFX=y

subsys/sal/sid_pal/src/CMakeLists.txt

@@ -63,11 +63,11 @@ zephyr_library_sources_ifdef(CONFIG_SIDEWALK_SW_INTERRUPTS sid_sw_interrupts.c)
 
 zephyr_library_sources_ifdef(CONFIG_SIDEWALK_DELAY sid_delay.c)
 
-if(CONFIG_SOC_NRF52840)
+if(CONFIG_SIDEWALK_SPI_BUS_NRFX)
 zephyr_library_sources_ifdef(CONFIG_SIDEWALK_SPI_BUS sid_pal_serial_bus_nrfx_spi.c)
 else()
 zephyr_library_sources_ifdef(CONFIG_SIDEWALK_SPI_BUS sid_pal_serial_bus_spi.c)
-endif() # CONFIG_SOC_NRF52840
+endif() # CONFIG_SIDEWALK_SPI_BUS_NRFX
 
 zephyr_library_sources_ifdef(CONFIG_SIDEWALK sid_common.c)