Add device and channel settings api

Author: zuckschwerdt

Diff for: PlutoSDR_Settings.cpp

@@ -125,21 +125,159 @@ bool SoapyPlutoSDR::getFullDuplex( const int direction, const size_t channel ) c
 SoapySDR::ArgInfoList SoapyPlutoSDR::getSettingInfo(void) const
 {
 	SoapySDR::ArgInfoList setArgs;
+	/*
+	18 device-specific attributes
+		 0: calib_mode value: auto
+		 1: calib_mode_available value: auto manual manual_tx_quad tx_quad rf_dc_offs rssi_gain_step
+		 2: dcxo_tune_coarse ERROR: Operation not supported by device (-19)
+		 3: dcxo_tune_coarse_available value: [0 0 0]
+		 4: dcxo_tune_fine ERROR: Operation not supported by device (-19)
+		 5: dcxo_tune_fine_available value: [0 0 0]
+		 6: ensm_mode value: fdd
+		 7: ensm_mode_available value: sleep wait alert fdd pinctrl pinctrl_fdd_indep
+		 8: filter_fir_config value: FIR Rx: 0,0 Tx: 0,0
+		 9: gain_table_config ERROR: Input/output error (-5)
+		10: multichip_sync ERROR: Permission denied (-13)
+		11: rssi_gain_step_error value: lna_error: 0 0 0 0\nmixer_error: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0\ngain_step_calib_reg_val: 0 0 0 0 0
+		12: rx_path_rates value: BBPLL:983040004 ADC:245760001 R2:122880000 R1:61440000 RF:30720000 RXSAMP:30720000
+		13: trx_rate_governor value: nominal
+		14: trx_rate_governor_available value: nominal highest_osr
+		15: tx_path_rates value: BBPLL:983040004 DAC:122880000 T2:122880000 T1:61440000 TF:30720000 TXSAMP:30720000
+		16: xo_correction value: 39999976
+		17: xo_correction_available value: [39991977 1 40007975]
+	*/
+	unsigned int attrs_count = iio_device_get_attrs_count(dev);
+
+	for (unsigned int index = 0; index < attrs_count; ++index)
+	{
+		SoapySDR::ArgInfo arg;
+
+		const char *attr = iio_device_get_attr(dev, index);
+		arg.key = attr;
+		//arg.value = "true";
+		arg.name = attr;
+		arg.description = attr;
+		//arg.type = SoapySDR::ArgInfo::BOOL;
+		setArgs.push_back(arg);
+	}
 
 	return setArgs;
 }
 
 void SoapyPlutoSDR::writeSetting(const std::string &key, const std::string &value)
 {
+	std::lock_guard<pluto_spin_mutex> rx_lock(rx_device_mutex);
+	std::lock_guard<pluto_spin_mutex> tx_lock(rx_device_mutex);
+	iio_device_attr_write(dev, key.c_str(), value.c_str());
+}
+
+
+std::string SoapyPlutoSDR::readSetting(const std::string &key) const
+{
+	std::string info;
+	char value[128];
+	ssize_t len;
 
+	{
+		std::lock_guard<pluto_spin_mutex> rx_lock(rx_device_mutex);
+		std::lock_guard<pluto_spin_mutex> tx_lock(rx_device_mutex);
+		len = iio_device_attr_read(dev, key.c_str(), value, sizeof(value));
+	}
 
+	if (len > 0)
+	{
+		info.assign(value, len);
+	}
 
+	return info;
 }
 
+SoapySDR::ArgInfoList SoapyPlutoSDR::getSettingInfo(const int direction, const size_t channel) const
+{
+	SoapySDR::ArgInfoList setArgs;
+	/*
+	voltage2:  (output) 8 channel-specific attributes found:
+		0: filter_fir_en value: 0
+		1: raw value: 306
+		2: rf_bandwidth value: 18000000
+		3: rf_bandwidth_available value: [200000 1 40000000]
+		4: rf_port_select_available value: A B
+		5: sampling_frequency value: 30720000
+		6: sampling_frequency_available value: [2083333 1 61440000]
+		7: scale value: 1.000000
+	voltage2:  (input)	13 channel-specific attributes found:
+		 0: bb_dc_offset_tracking_en value: 1
+		 1: filter_fir_en value: 0
+		 2: gain_control_mode_available value: manual fast_attack slow_attack hybrid
+		 3: offset value: 57
+		 4: quadrature_tracking_en value: 1
+		 5: raw value: 2004
+		 6: rf_bandwidth value: 18000000
+		 7: rf_bandwidth_available value: [200000 1 56000000]
+		 8: rf_dc_offset_tracking_en value: 1
+		 9: rf_port_select_available value: A_BALANCED B_BALANCED C_BALANCED A_N A_P B_N B_P C_N C_P TX_MONITOR1 TX_MONITOR2 TX_MONITOR1_2
+		10: sampling_frequency value: 30720000
+		11: sampling_frequency_available value: [2083333 1 61440000]
+		12: scale value: 0.305250
+	*/
+
+	iio_channel *chn = iio_device_find_channel(dev, "voltage2", (direction == SOAPY_SDR_TX));
+
+	unsigned int attrs_count = iio_channel_get_attrs_count(chn);
+
+	for (unsigned int index = 0; index < attrs_count; ++index)
+	{
+		SoapySDR::ArgInfo arg;
+
+		const char *attr = iio_channel_get_attr(chn, index);
+		arg.key = attr;
+		//arg.value = "true";
+		arg.name = attr;
+		arg.description = attr;
+		//arg.type = SoapySDR::ArgInfo::BOOL;
+		setArgs.push_back(arg);
+	}
 
-std::string SoapyPlutoSDR::readSetting(const std::string &key) const
+	return setArgs;
+}
+
+void SoapyPlutoSDR::writeSetting(const int direction, const size_t channel, const std::string &key, const std::string &value)
+{
+	if (direction == SOAPY_SDR_RX)
+	{
+		std::lock_guard<pluto_spin_mutex> lock(rx_device_mutex);
+		iio_channel_attr_write(iio_device_find_channel(dev, "voltage2", false), key.c_str(), value.c_str());
+	}
+
+	else if (direction == SOAPY_SDR_TX)
+	{
+		std::lock_guard<pluto_spin_mutex> lock(tx_device_mutex);
+		iio_channel_attr_write(iio_device_find_channel(dev, "voltage2", true), key.c_str(), value.c_str());
+	}
+}
+
+std::string SoapyPlutoSDR::readSetting(const int direction, const size_t channel, const std::string &key) const
 {
 	std::string info;
+	char value[128]; // widest attr value seen is 95 chars
+	ssize_t len;
+
+	if (direction == SOAPY_SDR_RX)
+	{
+		std::lock_guard<pluto_spin_mutex> lock(rx_device_mutex);
+		len = iio_channel_attr_read(iio_device_find_channel(dev, "voltage2", false), key.c_str(), value, sizeof(value));
+	}
+
+	else if (direction == SOAPY_SDR_TX)
+	{
+		std::lock_guard<pluto_spin_mutex> lock(tx_device_mutex);
+		len = iio_channel_attr_read(iio_device_find_channel(dev, "voltage2", true), key.c_str(), value, sizeof(value));
+	}
+
+	if (len > 0)
+	{
+		info.assign(value, len);
+	}
 
 	return info;
 }

Diff for: SoapyPlutoSDR.hpp

@@ -197,6 +197,15 @@ class SoapyPlutoSDR : public SoapySDR::Device{
 		std::string readSetting(const std::string &key) const;
 
 
+		SoapySDR::ArgInfoList getSettingInfo(const int direction, const size_t channel) const;
+
+
+		void writeSetting(const int direction, const size_t channel, const std::string &key, const std::string &value);
+
+
+		std::string readSetting(const int direction, const size_t channel, const std::string &key) const;
+
+
 		/*******************************************************************
 		 * Antenna API
 		 ******************************************************************/