updated code for nRF Connect SDK v2.8.0

README.md

@@ -15,7 +15,7 @@ It has been tested on the nRF5340 Audio DK, but it should work with any nRF5340
 ### HCI over USB CDC
 
 ```sh
-west build -b nrf5340dk_nrf5340_cpuapp -- -DEXTRA_DTC_OVERLAY_FILE=usb.overlay -DOVERLAY_CONFIG=overlay-usb.conf
+west build -b nrf5340dk/nrf5340/cpuapp -- -DEXTRA_DTC_OVERLAY_FILE=usb.overlay -DOVERLAY_CONFIG=overlay-usb.conf
 ```
 _HCI over UART and timesync not tested._
 
@@ -25,7 +25,7 @@ _HCI over UART and timesync not tested._
 ### HCI over USB CDC
 
 ```sh
-west build -b nrf5340_audio_dk_nrf5340_cpuapp -- -DEXTRA_DTC_OVERLAY_FILE=usb.overlay -DOVERLAY_CONFIG=overlay-usb.conf
+west build -b nrf5340_audio_dk/nrf5340/cpuapp -- -DEXTRA_DTC_OVERLAY_FILE=usb.overlay -DOVERLAY_CONFIG=overlay-usb.conf
 ```
 
 ### HCI over UART 0 connected to Virtual UART in J-Link Probe
@@ -38,12 +38,12 @@ west build -b nrf5340_audio_dk_nrf5340_cpuapp
 
 Release build:
 ```sh
-west build -b nrf5340_audio_dk_nrf5340_cpuapp -- -DEXTRA_DTC_OVERLAY_FILE=uart1.overlay
+west build -b nrf5340_audio_dk/nrf5340/cpuapp -- -DEXTRA_DTC_OVERLAY_FILE=uart1.overlay
 ```
 
 Debug build:
 ```sh
-west build -b nrf5340_audio_dk_nrf5340_cpuapp -- -DEXTRA_DTC_OVERLAY_FILE=uart1.overlay -DOVERLAY_CONFIG=debug.conf
+west build -b nrf5340_audio_dk/nrf5340/cpuapp -- -DEXTRA_DTC_OVERLAY_FILE=uart1.overlay -DOVERLAY_CONFIG=debug.conf
 ```
 
 To use UART 1 via Arduino headers, the virtual UART of the J-Link probe needs to be disabled, e.g. with the JLink Configuration Tool.

boards/nrf5340_audio_dk_nrf5340_cpuapp.overlay

@@ -6,7 +6,11 @@
 		    gpios = <&arduino_header 10 GPIO_ACTIVE_HIGH>;
             label = "Controller to host timesync pin";
         };
-    };
+        alternate_toggle: pin_1 {
+		    gpios = <&arduino_header 11 GPIO_ACTIVE_HIGH>;
+            label = "alternate toggle pin";
+        };
+   };
 };
 
 &uart0 {

prj.conf

@@ -41,3 +41,4 @@ CONFIG_BT_BUF_CMD_TX_COUNT=10
 # for the timesync command
 CONFIG_BT_HCI_RAW_CMD_EXT=y
 
+CONFIG_NRFX_TIMER2=y

src/main.c

@@ -24,13 +24,14 @@
 
 #include <zephyr/usb/usb_device.h>
 
-#include <zephyr/net/buf.h>
+#include <zephyr/net_buf.h>
 #include <zephyr/bluetooth/bluetooth.h>
 #include <zephyr/bluetooth/l2cap.h>
 #include <zephyr/bluetooth/hci.h>
 #include <zephyr/bluetooth/buf.h>
 #include <zephyr/bluetooth/hci_raw.h>
 
+#include <nrfx_timer.h>
 #include "audio_sync_timer.h"
 
 #define LOG_MODULE_NAME hci_uart
@@ -183,7 +184,7 @@ static void rx_isr(void)
 			if (remaining == 0) {
 				/* Packet received */
 				LOG_DBG("putting RX packet in queue.");
-				net_buf_put(&tx_queue, buf);
+				k_fifo_put(&tx_queue, buf);
 				state = ST_IDLE;
 			}
 			break;
@@ -216,7 +217,7 @@ static void tx_isr(void)
 	int len;
 
 	if (!buf) {
-		buf = net_buf_get(&uart_tx_queue, K_NO_WAIT);
+		buf = k_fifo_get(&uart_tx_queue, K_NO_WAIT);
 		if (!buf) {
 			uart_irq_tx_disable(hci_uart_dev);
 			return;
@@ -257,15 +258,15 @@ static void tx_thread(void *p1, void *p2, void *p3)
 		int err;
 
 		/* Wait until a buffer is available */
-		buf = net_buf_get(&tx_queue, K_FOREVER);
+		buf = k_fifo_get(&tx_queue, K_FOREVER);
 		/* Pass buffer to the stack */
 		err = bt_send(buf);
-		if (err!=BT_HCI_ERR_SUCCESS) {
-			if (err!=BT_HCI_ERR_EXT_HANDLED) {
-			    LOG_ERR("Unable to send (err %d)", err);
+        if (err!=BT_HCI_ERR_SUCCESS) {
+            if (err!=BT_HCI_ERR_EXT_HANDLED) {
+                LOG_ERR("Unable to send (err %d)", err);
             }
-			net_buf_unref(buf);
-		}
+            net_buf_unref(buf);
+        }
 
 		/* Give other threads a chance to run if tx_queue keeps getting
 		 * new data all the time.
@@ -279,7 +280,7 @@ static int h4_send(struct net_buf *buf)
 	LOG_DBG("buf %p type %u len %u", buf, bt_buf_get_type(buf),
 		    buf->len);
 
-	net_buf_put(&uart_tx_queue, buf);
+	k_fifo_put(&uart_tx_queue, buf);
 	uart_irq_tx_enable(hci_uart_dev);
 
 	return 0;
@@ -369,6 +370,13 @@ static const struct gpio_dt_spec timesync_pin = GPIO_DT_SPEC_GET(TIMESYNC_GPIO,
 #error "No timesync gpio available!"
 #endif
 
+#define ALTERNATE_TOGGLE_GPIO DT_NODELABEL(alternate_toggle)
+#if DT_NODE_HAS_STATUS(ALTERNATE_TOGGLE_GPIO, okay)
+static const struct gpio_dt_spec alternate_toggle_pin = GPIO_DT_SPEC_GET(ALTERNATE_TOGGLE_GPIO, gpios);
+#else
+#warning "No alternate toggle gpio availabe!"
+#endif
+
 #define  HCI_CMD_ISO_TIMESYNC	(0x200)
 
 struct hci_cmd_iso_timestamp_response {
@@ -403,8 +411,50 @@ uint8_t hci_cmd_iso_timesync_cb(struct net_buf *buf)
 }
 #endif
 
+#define TIME_TO_WAIT_MS 1000
+#define SYNC_TOGGLE_TIMER_INSTANCE_NUMBER 2
+static const nrfx_timer_t sync_toggle_timer_instance =
+	NRFX_TIMER_INSTANCE(SYNC_TOGGLE_TIMER_INSTANCE_NUMBER);
+
+static nrfx_timer_config_t cfg = {.frequency = NRFX_MHZ_TO_HZ(1UL),
+				  .mode = NRF_TIMER_MODE_TIMER,
+				  .bit_width = NRF_TIMER_BIT_WIDTH_32,
+				  .interrupt_priority = NRFX_TIMER_DEFAULT_CONFIG_IRQ_PRIORITY,
+				  .p_context = NULL};
+
+static void sync_toggle_timer_isr_handler(nrf_timer_event_t event_type, void *p_context)
+{
+    ARG_UNUSED(p_context);
+    if(event_type == NRF_TIMER_EVENT_COMPARE1)
+    {
+        char * p_msg = p_context;
+        uint32_t remainder_us = nrf_timer_cc_get(NRF_TIMER2,
+						 NRF_TIMER_CC_CHANNEL1);
+
+#if DT_NODE_HAS_STATUS(ALTERNATE_TOGGLE_GPIO, okay)
+        gpio_pin_toggle_dt( &alternate_toggle_pin );
+#endif
+
+        LOG_INF("%d\n", remainder_us );
+        printf("Timer finished. Context passed to the handler: >%s<", p_msg);
+    }
+}
+
 int main(void)
 {
+    // timer setup
+    nrfx_err_t ret;
+    ret = nrfx_timer_init(&sync_toggle_timer_instance, &cfg, sync_toggle_timer_isr_handler);
+    if (ret - NRFX_ERROR_BASE_NUM) {
+        LOG_ERR("nrfx timer init error: %d", ret);
+        return -ENODEV;
+    }
+    uint32_t desired_ticks = nrfx_timer_ms_to_ticks(&sync_toggle_timer_instance, TIME_TO_WAIT_MS);
+    nrfx_timer_compare(&sync_toggle_timer_instance, NRF_TIMER_CC_CHANNEL1, desired_ticks, true);
+    IRQ_CONNECT(NRFX_IRQ_NUMBER_GET(NRF_TIMER_INST_GET(SYNC_TOGGLE_TIMER_INSTANCE_NUMBER)), IRQ_PRIO_LOWEST,
+            NRFX_TIMER_INST_HANDLER_GET(SYNC_TOGGLE_TIMER_INSTANCE_NUMBER), 0, 0);
+    nrfx_timer_enable(&sync_toggle_timer_instance);
+
 	/* incoming events and data from the controller */
 	static K_FIFO_DEFINE(rx_queue);
 	int err;
@@ -441,6 +491,10 @@ int main(void)
 		}
 	}
 
+#if DT_NODE_HAS_STATUS(ALTERNATE_TOGGLE_GPIO, okay)
+    gpio_pin_configure_dt(&alternate_toggle_pin, GPIO_OUTPUT_INACTIVE);
+#endif
+
 #ifdef CONFIG_AUDIO_SYNC_TIMER_USES_RTC
 	/* Register iso_timesync command */
 	static struct bt_hci_raw_cmd_ext cmd_list = {
@@ -477,7 +531,7 @@ int main(void)
     while (1) {
 		struct net_buf *buf;
 
-		buf = net_buf_get(&rx_queue, K_FOREVER);
+		buf = k_fifo_get(&rx_queue, K_FOREVER);
 		err = h4_send(buf);
 		if (err) {
 			LOG_ERR("Failed to send");