Add keymatrix feature

central/prj.conf

@@ -10,8 +10,8 @@ CONFIG_GAZELL=y
 CONFIG_LOG=y
 CONFIG_LOG_MODE_MINIMAL=y
 
-CONFIG_SPI_LOG_LEVEL_INF=y
-CONFIG_PMW3360_LOG_LEVEL_DBG=y
+CONFIG_SPI_LOG_LEVEL_INF=n
+CONFIG_PMW3360_LOG_LEVEL_DBG=n
 
 CONFIG_SPI=y
 CONFIG_SENSOR=y

central/src/main.c

@@ -324,6 +324,14 @@ bool gzll_init(void)
     return false;
   }
 
+  ack_payload[0] = 0x00;
+  ret = nrf_gzll_add_packet_to_tx_fifo(PIPE_NUMBER, ack_payload, TX_PAYLOAD_LENGTH);
+  if (!ret)
+  {
+    LOG_ERR("Cannot add packet to Gazell TX FIFO");
+    return;
+  }
+
   ret = nrf_gzll_enable();
   if (!ret)
   {
@@ -399,7 +407,7 @@ void gzll_rx_result_handler(struct gzll_rx_result *rx_result)
   }
   else if (data_payload_length > 0)
   {
-    LOG_DBG("Gazell received");
+    LOG_DBG("Gazell received%d", data_payload[0]);
   }
 
   /* Send. */

ncs-firmware.code-workspace

@@ -14,5 +14,9 @@
 			"${workspaceFolder:central}",
 			"${workspaceFolder:peripheral}",
 		],
+		"files.associations": {
+			"kernel.h": "c",
+			"main.h": "c"
+		},
 	}
 }

peripheral/Kconfig

@@ -8,7 +8,7 @@ menu "Gazell Link Layer sample: Device"
 
 config GZLL_TX_STATISTICS
 	bool "Packet transaction statistics"
-	default y
+	default n
 	help
 	  Turns on transmission statistics gathering.
 

peripheral/dts/bindings/gpio-km.yaml

@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+
+description: GPIO KEYS parent node
+
+compatible: "gpio-km"
+
+child-binding:
+    description: GPIO KEYS child node
+    properties:
+       gpios:
+          type: phandle-array
+          required: true
+       label:
+          required: true
+          type: string
+          description: Human readable string describing the device (used as device_get_binding() argument)

peripheral/nrf52840dk_nrf52840.overlay

@@ -0,0 +1,88 @@
+
+// For more help, browse the DeviceTree documentation at https: //docs.zephyrproject.org/latest/guides/dts/index.html
+// You can also visit the nRF DeviceTree extension documentation at https: //nrfconnect.github.io/vscode-nrf-connect/devicetree/nrfdevicetree.html
+
+/ {
+	km {
+		//  compatible = "gpio-keys";
+		compatible = "gpio-km";
+		col0: column_0 {
+			gpios = <&gpio1 10 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
+			label = "Column 0";
+		};
+		col1: column_1 {
+			gpios = <&gpio1 11 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
+			label = "Column 1";
+		};
+		col2: column_2 {
+			gpios = <&gpio1 12 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
+			label = "Column 2";
+		};
+
+		row0: row_0 {
+			gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
+			label = "Row 0";
+		};
+		row1: row_1 {
+			gpios = <&gpio0 3 GPIO_ACTIVE_HIGH>;
+			label = "Row 1";
+		};
+		row2: row_2 {
+			gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
+			label = "Row 2";
+		};
+		row3: row_3 {
+			gpios = <&gpio0 28 GPIO_ACTIVE_HIGH>;
+			label = "Row 3";
+		};
+	};
+
+	aliases {
+		col0 = &col0;
+		col1 = &col1;
+		col2 = &col2;
+		row0 = &row0;
+		row1 = &row1;
+		row2 = &row2;
+		row3 = &row3;
+	};
+
+	chosen {
+		// zephyr,console = &uart1;
+	};
+};
+
+&pinctrl {
+  spi1_default_alt: spi1_default_alt{
+    group1{
+      psels = <NRF_PSEL(SPIM_SCK, 1, 5)>,
+              <NRF_PSEL(SPIM_MOSI, 1, 8)>,
+              <NRF_PSEL(SPIM_MISO, 1, 9)>;
+    };
+  };
+  spi1_sleep_alt: spi1_sleep_alt{
+    group1{
+      psels = <NRF_PSEL(SPIM_SCK, 1, 5)>,
+              <NRF_PSEL(SPIM_MOSI, 1, 8)>,
+              <NRF_PSEL(SPIM_MISO, 1, 9)>;
+      low-power-enable;
+    };
+  };
+};
+
+&spi1 {
+  compatible = "nordic,nrf-spim";
+  status = "okay";
+  pinctrl-0 = <&spi1_default_alt>;
+  pinctrl-1 = <&spi1_sleep_alt>;
+  pinctrl-names = "default", "sleep";
+  cs-gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
+
+  pmw3360@0 {
+    compatible = "pixart,pmw3360";
+    reg = <0>;
+    irq-gpios = <&gpio0 31 GPIO_ACTIVE_LOW>;
+    spi-max-frequency = <1200000>;
+    label = "pmw3360";
+  };
+};

peripheral/prj.conf

@@ -1,12 +1,25 @@
 #
-# Copyright (c) 2021 Nordic Semiconductor ASA
-#
 # SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 #
+
+CONFIG_GPIO=y
+
 CONFIG_GZLL=y
 CONFIG_GAZELL=y
 
-CONFIG_DK_LIBRARY=y
-
 CONFIG_LOG=y
 CONFIG_LOG_MODE_MINIMAL=y
+
+# CONFIG_SPI_LOG_LEVEL_INF=y
+# CONFIG_PMW3360_LOG_LEVEL_DBG=y
+
+# CONFIG_SPI=y
+# CONFIG_SENSOR=y
+# CONFIG_PMW3360=y
+# CONFIG_PMW3360_ORIENTATION_0=y
+# CONFIG_PMW3360_CPI=1600
+# CONFIG_PMW3360_RUN_DOWNSHIFT_TIME_MS=500
+# CONFIG_PMW3360_REST1_DOWNSHIFT_TIME_MS=500
+# CONFIG_PMW3360_REST2_DOWNSHIFT_TIME_MS=500
+
+CONFIG_CBPRINTF_FP_SUPPORT=y