drivers: ieee802154: New API for modulated carrier wave transmission.

Added new API function to start modulated carrier wave transmission

Signed-off-by: Przemyslaw Bida <przemyslaw.bida@nordicsemi.no>

drivers/ieee802154/Kconfig

@@ -100,6 +100,11 @@ config IEEE802154_SELECTIVE_TXCHANNEL
 	  this Kconfig option is enabled. If the Kconfig option is disabled the drivers
 	  MUST NOT have the capability.
 
+config IEEE802154_CARRIER_FUNCTIONS
+	bool "Support for carrier functions"
+	help
+	  Enable support for functions such as modulated carrier and continuous carrier.
+
 module = IEEE802154_DRIVER
 module-str = IEEE 802.15.4 driver
 module-help = Sets log level for IEEE 802.15.4 Device Drivers.

drivers/ieee802154/ieee802154_nrf5.c

@@ -730,7 +730,7 @@ static int nrf5_stop(const struct device *dev)
 	return 0;
 }
 
-#if defined(CONFIG_NRF_802154_CARRIER_FUNCTIONS)
+#if defined(CONFIG_IEEE802154_CARRIER_FUNCTIONS)
 static int nrf5_continuous_carrier(const struct device *dev)
 {
 	ARG_UNUSED(dev);
@@ -747,6 +747,23 @@ static int nrf5_continuous_carrier(const struct device *dev)
 
 	return 0;
 }
+
+static int nrf_modulated_carrier(const struct device *dev, const uint8_t *data)
+{
+	ARG_UNUSED(dev);
+
+	nrf_802154_tx_power_set(nrf5_data.txpwr);
+
+	if (!nrf_802154_modulated_carrier(data)) {
+		LOG_ERR("Failed to enter modulated carrier state");
+		return -EIO;
+	}
+
+	LOG_DBG("Modulated carrier wave transmission started (channel: %d)",
+		nrf_802154_channel_get());
+
+	return 0;
+}
 #endif
 
 #if !defined(CONFIG_IEEE802154_NRF5_EXT_IRQ_MGMT)
@@ -1271,15 +1288,16 @@ static const struct ieee802154_radio_api nrf5_radio_api = {
 	.set_txpower = nrf5_set_txpower,
 	.start = nrf5_start,
 	.stop = nrf5_stop,
-#if defined(CONFIG_NRF_802154_CARRIER_FUNCTIONS)
+#if defined(CONFIG_IEEE802154_CARRIER_FUNCTIONS)
 	.continuous_carrier = nrf5_continuous_carrier,
+	.modulated_carrier = nrf_modulated_carrier,
 #endif
 	.tx = nrf5_tx,
 	.ed_scan = nrf5_energy_scan_start,
 	.get_time = nrf5_get_time,
 	.get_sch_acc = nrf5_get_acc,
 	.configure = nrf5_configure,
-	.attr_get = nrf5_attr_get
+	.attr_get = nrf5_attr_get,
 };
 
 #if defined(CONFIG_NET_L2_IEEE802154)

include/zephyr/net/ieee802154_radio.h

@@ -1765,6 +1765,7 @@ struct ieee802154_radio_api {
 	 */
 	int (*stop)(const struct device *dev);
 
+#if defined(CONFIG_IEEE802154_CARRIER_FUNCTIONS)
 	/**
 	 * @brief Start continuous carrier wave transmission.
 	 *
@@ -1786,6 +1787,30 @@ struct ieee802154_radio_api {
 	 */
 	int (*continuous_carrier)(const struct device *dev);
 
+	/**
+	 * @brief Start modulated carrier wave transmission.
+	 *
+	 * @details When the radio is emitting modulated carrier signals, it
+	 * blocks all transmissions on the selected channel.
+	 * This function is to be called only during radio
+	 * tests. Do not use it during normal device operation.
+	 *
+	 * @note Implementations MAY **sleep** and will usually NOT be
+	 * **isr-ok**. MAY be called in any interface state once the driver is
+	 * fully initialized ("ready").
+	 *
+	 * @param dev pointer to IEEE 802.15.4 driver device
+	 * @param data Pointer to a buffer to modulate the carrier with.
+	 * The first byte is the data length.
+	 *
+	 * @retval 0 modulated carrier wave transmission started
+	 * @retval -EALREADY The driver was already in "TESTING" state and
+	 * emitting a modulated carrier.
+	 * @retval -EIO not started
+	 */
+	int (*modulated_carrier)(const struct device *dev, const uint8_t *data);
+#endif /* CONFIG_IEEE802154_CARRIER_FUNCTIONS */
+
 	/**
 	 * @brief Set or update driver configuration.
 	 *

modules/hal_nordic/Kconfig

@@ -204,7 +204,7 @@ config NRF_802154_SECURITY_KEY_STORAGE_SIZE
 
 config NRF_802154_CARRIER_FUNCTIONS
 	bool "nRF 802.15.4 carrier functions"
-	default y if OPENTHREAD_DIAG
+	default y if (OPENTHREAD_DIAG || IEEE802154_CARRIER_FUNCTIONS)
 	help
 	  This option enables functions such as modulated carrier and continuous carrier.
 	  If this option is modified on a multicore SoC, its remote counterpart must be set to the exact same value.

modules/openthread/Kconfig.features

@@ -144,6 +144,7 @@ config OPENTHREAD_DHCP6_SERVER
 
 config OPENTHREAD_DIAG
 	bool "Diagnostic functions support"
+	depends on IEEE802154_CARRIER_FUNCTIONS
 	help
 	  Enable OpenThread CLI diagnostic commands
 

modules/openthread/platform/diag.c

@@ -86,6 +86,7 @@ void otPlatDiagRadioReceived(otInstance *aInstance,
 	ARG_UNUSED(aError);
 }
 
+#if defined(CONFIG_IEEE802154_CARRIER_FUNCTIONS)
 otError otPlatDiagRadioTransmitCarrier(otInstance *aInstance, bool aEnable)
 {
 	if (!otPlatDiagModeGet()) {
@@ -94,6 +95,7 @@ otError otPlatDiagRadioTransmitCarrier(otInstance *aInstance, bool aEnable)
 
 	return platformRadioTransmitCarrier(aInstance, aEnable);
 }
+#endif /* CONFIG_IEEE802154_CARRIER_FUNCTIONS */
 
 void otPlatDiagAlarmCallback(otInstance *aInstance)
 {

modules/openthread/platform/platform-zephyr.h

@@ -70,10 +70,12 @@ void platformUartPanic(void);
  */
 uint16_t platformRadioChannelGet(otInstance *aInstance);
 
+#if defined(CONFIG_IEEE802154_CARRIER_FUNCTIONS)
 /**
  * Start/stop continuous carrier wave transmission.
  */
 otError platformRadioTransmitCarrier(otInstance *aInstance, bool aEnable);
+#endif /* CONFIG_IEEE802154_CARRIER_FUNCTIONS */
 
 /**
  * This function initializes the random number service used by OpenThread.

modules/openthread/platform/radio.c

@@ -823,6 +823,7 @@ otError otPlatRadioReceiveAt(otInstance *aInstance, uint8_t aChannel,
 }
 #endif
 
+#if defined(CONFIG_IEEE802154_CARRIER_FUNCTIONS)
 otError platformRadioTransmitCarrier(otInstance *aInstance, bool aEnable)
 {
 	if (radio_api->continuous_carrier == NULL) {
@@ -845,6 +846,7 @@ otError platformRadioTransmitCarrier(otInstance *aInstance, bool aEnable)
 
 	return OT_ERROR_NONE;
 }
+#endif /* CONFIG_IEEE802154_CARRIER_FUNCTIONS */
 
 otRadioState otPlatRadioGetState(otInstance *aInstance)
 {