Merge pull request #4 from DynamicDevices/shreya/nRF5340Tag_overlay

modified:   boards/nrf5340tag_nrf5340_cpuapp.overlay

boards/nrf5340tag_nrf5340_cpuapp.conf

@@ -7,4 +7,4 @@
 # Default PRNG entropy for nRF53 Series devices is CSPRNG CC312
 # which for that purpose is too slow yet
 # Use Xoroshiro128+ as PRNG
-CONFIG_XOROSHIRO_RANDOM_GENERATOR=y
+CONFIG_XOSHIRO_RANDOM_GENERATOR=y

boards/nrf5340tag_nrf5340_cpuapp.overlay

@@ -1,9 +1,103 @@
-/* Copyright (c) 2020 Nordic Semiconductor ASA
+/* Copyright (c) 2021 Nordic Semiconductor ASA
  *
  * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
  */
 
+ #include <zephyr/dt-bindings/lora/sx126x.h>
+
+//&temp {
+//    status = "okay";
+//};
+
+/ {
+	/*
+	* In some default configurations within the nRF Connect SDK,
+	* e.g. on nRF52840, the chosen zephyr,entropy node is &cryptocell.
+	* This devicetree overlay ensures that default is overridden wherever it
+	* is set, as this application uses the RNG node for entropy exclusively.
+	*/
+//	chosen {
+//		zephyr,entropy = &rng;
+//	};
+
+	aliases {
+		lora0 = &lora;
+	};
+
+	GNSS: zephyr,user {
+		gnss_vbckp_on-gpios = <&gpio0 5 0>;
+		gnss_vcc_on-gpios = <&gpio1 0 0>;
+		gnss_reset-gpios = <&gpio1 6 0>;
+	};
+};
+
+&pinctrl {
+
+	uart0_default: uart0_default {
+		group1 {
+			psels = <NRF_PSEL(UART_TX, 0, 25)>, <NRF_PSEL(UART_RTS, 0, 19)>;
+		};
+		group2 {
+			psels = <NRF_PSEL(UART_RX, 0, 24)>, <NRF_PSEL(UART_CTS, 0, 21)>;
+		};
+	};
+
+	uart0_sleep: uart0_sleep {
+		group1 {
+			psels = <NRF_PSEL(UART_TX, 0, 25)>,
+					<NRF_PSEL(UART_RX, 0, 24)>,
+					<NRF_PSEL(UART_RTS, 0, 19)>,
+					<NRF_PSEL(UART_CTS, 0, 21)>;
+		};
+	};
+
+	spi1_default: spi1_default {
+		group1 {
+			psels = <NRF_PSEL(SPIM_SCK, 0, 20)>,
+					<NRF_PSEL(SPIM_MOSI, 0, 22)>,
+					<NRF_PSEL(SPIM_MISO, 0, 23)>;
+		};
+	};
+
+	spi1_sleep: spi1_sleep {
+		group1 {
+			psels = <NRF_PSEL(SPIM_SCK, 0, 20)>,
+					<NRF_PSEL(SPIM_MOSI, 0, 22)>,
+					<NRF_PSEL(SPIM_MISO, 0, 23)>;
+		};
+	};
+};
+
 &uart0 {
 	status = "okay";
-	hw-flow-control;
+	current-speed = <9600>;
+	pinctrl-0 = <&uart0_default>;
+	pinctrl-1 = <&uart0_sleep>;
+	pinctrl-names = "default", "sleep";
+};	
+
+&spi1 {
+	compatible = "nordic,nrf-spim";
+	status = "okay";
+	cs-gpios = <&gpio0 21 GPIO_ACTIVE_LOW>;
+
+	pinctrl-0 = <&spi1_default>;
+	pinctrl-1 = <&spi1_sleep>;
+	pinctrl-names = "default", "sleep";
+	lora: lora@0 {
+		compatible = "semtech,sx1262";
+		reg = <0>;
+		reset-gpios = <&gpio1 3 GPIO_ACTIVE_LOW>;
+		busy-gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;
+//		tx-enable-gpios = <&gpio0 25 (GPIO_PULL_DOWN | GPIO_ACTIVE_HIGH)>;
+//		rx-enable-gpios = <&gpio0 24 (GPIO_PULL_DOWN | GPIO_ACTIVE_HIGH)>;
+		dio1-gpios = <&gpio0 6 (GPIO_PULL_DOWN | GPIO_ACTIVE_HIGH) >;
+        antenna-enable-gpios = <&gpio1 7 (GPIO_PULL_DOWN | GPIO_ACTIVE_HIGH) >;
+		spi-max-frequency = <125000>;
+	};
 };
+&gpio_fwd {
+	uart {
+		gpios = <&gpio0 11 0>;
+	};
+};

src/gpsparser.c

@@ -14,6 +14,7 @@
 
 #include <zephyr/kernel.h>
 #include <zephyr/drivers/uart.h>
+#include <zephyr/drivers/gpio.h>
 #include <zephyr/logging/log.h>
 
 #include "gpsparser.h"
@@ -22,10 +23,21 @@ LOG_MODULE_REGISTER(gpsparser, CONFIG_GPS_PARSER_LOG_LEVEL);
 
 #define INDENT_SPACES "  "
 
-const struct device *uart = DEVICE_DT_GET(DT_NODELABEL(uart1));
+// 1000 msec = 1 sec
+#define SLEEP_TIME_S   1000
+#define SLEEP_TIME_MS	100
+#define SLEEP_TIME_MMS	 10
+
+#define ZEPHYR_USER_NODE DT_PATH(zephyr_user)
+
+const struct gpio_dt_spec gnss_vbckup = GPIO_DT_SPEC_GET(ZEPHYR_USER_NODE, gnss_vbckp_on_gpios);
+const struct gpio_dt_spec gnss_vcc = GPIO_DT_SPEC_GET(ZEPHYR_USER_NODE, gnss_vcc_on_gpios);
+const struct gpio_dt_spec gnss_reset = GPIO_DT_SPEC_GET(ZEPHYR_USER_NODE, gnss_reset_gpios);
+
+const struct device *uart = DEVICE_DT_GET(DT_NODELABEL(uart0));
 
 const struct uart_config uart_cfg = {
-		.baudrate = 9600,
+		.baudrate = 115200,
 		.parity = UART_CFG_PARITY_NONE,
 		.stop_bits = UART_CFG_STOP_BITS_1,
 		.data_bits = UART_CFG_DATA_BITS_8,
@@ -86,6 +98,33 @@ void set_callback_gga( GgaHandler handler)
 void gpsparser(void)
 {
     char line[MINMEA_MAX_LENGTH];
+    int ret;
+
+    if (!gpio_is_ready_dt(&gnss_vbckup)) { return; }
+	if (!gpio_is_ready_dt(&gnss_vcc)) { return; }
+	if (!gpio_is_ready_dt(&gnss_reset)) { return; }
+	LOG_INF("pins are ready.");
+
+    // Configure the pins
+    ret = gpio_pin_configure_dt(&gnss_vbckup, GPIO_OUTPUT_INACTIVE);
+	if (ret < 0) { return; }
+	ret = gpio_pin_configure_dt(&gnss_vcc, GPIO_OUTPUT_INACTIVE);
+	if (ret < 0) { return; }
+	ret = gpio_pin_configure_dt(&gnss_reset, GPIO_OUTPUT_INACTIVE);
+	if (ret < 0) { return; }
+	LOG_INF("pins are configured.");
+
+    // GNSS start-up procedure
+	LOG_INF("GNSS start-up procedure...");
+	gpio_pin_set_dt(&gnss_vbckup, 0);
+	gpio_pin_set_dt(&gnss_vcc, 0);
+	gpio_pin_set_dt(&gnss_reset, 0);
+	k_msleep(SLEEP_TIME_MMS);
+	gpio_pin_set_dt(&gnss_vbckup, 1);
+	gpio_pin_set_dt(&gnss_vcc, 1);
+	k_msleep(SLEEP_TIME_MS);
+	gpio_pin_set_dt(&gnss_reset, 1);
+	LOG_INF("GNSS is set active.");
 
     int err = uart_configure(uart, &uart_cfg);