diff core/RTAudioCommandLine.cpp @ 171:e63563507edd

Added command-line options for the PGA

--- a/core/RTAudioCommandLine.cpp	Mon Dec 28 03:19:59 2015 +0100
+++ b/core/RTAudioCommandLine.cpp	Mon Dec 28 03:53:36 2015 +0100
@@ -11,9 +11,10 @@
 #include <getopt.h>
 #include "../include/BeagleRT.h"
 
-#ifndef OPT_PRU_FILE
-#define OPT_PRU_FILE 176 // this is an extended ASCII code
-#endif
+#define OPT_PRU_FILE 1000
+#define OPT_PGA_GAIN_LEFT 1001
+#define OPT_PGA_GAIN_RIGHT 1002
+
 
 enum {
 	kAmplifierMutePin = 61	// P8-26 controls amplifier mute
@@ -31,6 +32,8 @@
 	{"mute-speaker", 1, NULL, 'M'},
 	{"dac-level", 1, NULL, 'D'},
 	{"adc-level", 1, NULL, 'A'},
+	{"pga-gain-left", 1, NULL, OPT_PGA_GAIN_LEFT},
+	{"pga-gain-right", 1, NULL, OPT_PGA_GAIN_RIGHT},
 	{"hp-level", 1, NULL, 'H'},
 	{"receive-port", 1, NULL, 'R'},
 	{"transmit-port", 1, NULL, 'T'},
@@ -54,6 +57,8 @@
 	settings->beginMuted = 0;
 	settings->dacLevel = DEFAULT_DAC_LEVEL;
 	settings->adcLevel = DEFAULT_ADC_LEVEL;
+	for(int n = 0; n < 2; n++)
+		settings->pgaGain[n] = DEFAULT_PGA_GAIN;
 	settings->headphoneLevel = DEFAULT_HP_LEVEL;
 
 	settings->verbose = 0;
@@ -207,6 +212,12 @@
 			else
 				std::cerr << "Warning: filename for the PRU code is too long (>" << MAX_PRU_FILENAME_LENGTH << " characters). Using embedded PRU code instead\n";
 			break;
+		case OPT_PGA_GAIN_LEFT:
+			settings->pgaGain[0] = atof(optarg);
+			break;
+		case OPT_PGA_GAIN_RIGHT:
+			settings->pgaGain[1] = atof(optarg);
+			break;
 		case '?':
 		default:
 			return c;
@@ -221,6 +232,8 @@
 	std::cerr << "   --period [-p] period:            Set the hardware period (buffer) size in analog samples\n";
 	std::cerr << "   --dac-level [-D] dBs:            Set the DAC output level (0dB max; -63.5dB min)\n";
 	std::cerr << "   --adc-level [-A] dBs:            Set the ADC input level (0dB max; -12dB min)\n";
+	std::cerr << "   --pga-gain-left dBs:             Set the Programmable Gain Amplifier for the left audio channel (0dBmin; 59.5dB max; default: 16dB)\n";
+	std::cerr << "   --pga-gain-right dBs:            Set the Programmable Gain Amplifier for the right audio channel (0dBmin; 59.5dB max; default: 16dB)\n";
 	std::cerr << "   --hp-level [-H] dBs:             Set the headphone output level (0dB max; -63.5dB min)\n";
 	std::cerr << "   --mute-speaker [-M] val:         Set whether to mute the speaker initially (default: no)\n";
 	std::cerr << "   --use-analog [-N] val:           Set whether to use ADC/DAC analog (default: yes)\n";