Support for Teensy LC, 3.5, 3.6 and AVR 8Mhz

Added support for Teensy 3 LC, 3.5, 3.6.
Corrected bad #ifdef added with STM32 support that broke Teensy support

AudioConfigTeensy3_12bit.h

@@ -7,7 +7,17 @@
 /* Used internally to put the 0-biased generated audio into the centre of the output range (12 bits on Teensy 3) */
 #define AUDIO_BIAS ((uint16_t) 2048)
 
+#if !defined(AUDIO_CHANNEL_1_PIN) && defined(__arm__) && defined(CORE_TEENSY)
+#if defined(__MKL26Z64__)
+#define AUDIO_CHANNEL_1_PIN A12
+#elif defined(__MK20DX128__) || defined(__MK20DX256__)
 #define AUDIO_CHANNEL_1_PIN A14
+#elif defined(__MK64FX512__) || defined(__MK66FX1M0__)
+#define AUDIO_CHANNEL_1_PIN A21
+#else
+#error "Unknown Teensy"
+#endif
+#endif
 
 #endif        //  #ifndef AUDIOCONFIGTEENSY3_12BIT_H
 

MozziGuts.cpp

@@ -464,9 +464,9 @@ static void startAudioStandard()
 	pinMode(AUDIO_CHANNEL_1_PIN, OUTPUT);	// set pin to output for audio
 	//	pinMode(AUDIO_CHANNEL_2_PIN, OUTPUT);	// set pin to output for audio
 #if (AUDIO_MODE == STANDARD)
-	Timer1.initializeCPUCycles(16000000UL/AUDIO_RATE, PHASE_FREQ_CORRECT);		// set period, phase and frequency correct
+	Timer1.initializeCPUCycles(F_CPU/AUDIO_RATE, PHASE_FREQ_CORRECT);		// set period, phase and frequency correct
 #else // (AUDIO_MODE == STANDARD_PLUS)
-	Timer1.initializeCPUCycles(16000000UL/PWM_RATE, FAST);	// fast mode enables higher PWM rate
+	Timer1.initializeCPUCycles(F_CPU/PWM_RATE, FAST);	// fast mode enables higher PWM rate
 #endif
 	Timer1.pwm(AUDIO_CHANNEL_1_PIN, AUDIO_BIAS);		// pwm pin, 50% of Mozzi's duty cycle, ie. 0 signal
 #if (STEREO_HACK == true)
@@ -549,7 +549,7 @@ static void startAudioHiFi()
 	// pwm on timer 1
 	pinMode(AUDIO_CHANNEL_1_highByte_PIN, OUTPUT);	// set pin to output for audio, use 3.9k resistor
 	pinMode(AUDIO_CHANNEL_1_lowByte_PIN, OUTPUT);	// set pin to output for audio, use 499k resistor
-	Timer1.initializeCPUCycles(16000000UL/125000, FAST);		// set period for 125000 Hz fast pwm carrier frequency = 14 bits
+	Timer1.initializeCPUCycles(F_CPU/125000, FAST);		// set period for 125000 Hz fast pwm carrier frequency = 14 bits
 	Timer1.pwm(AUDIO_CHANNEL_1_highByte_PIN, 0);		// pwm pin, 0% duty cycle, ie. 0 signal
 	Timer1.pwm(AUDIO_CHANNEL_1_lowByte_PIN, 0);		// pwm pin, 0% duty cycle, ie. 0 signal
 	backupMozziTimer1();
@@ -613,7 +613,7 @@ static void backupMozziTimer2()
 static void setupTimer2()
 {
 	backupPreMozziTimer2(); // to reset while pausing
-	unsigned long period = 16000000UL/AUDIO_RATE;
+	unsigned long period = F_CPU/AUDIO_RATE;
 	FrequencyTimer2::setPeriodCPUCycles(period);
 	FrequencyTimer2::setOnOverflow(dummy);
 	FrequencyTimer2::enable();

hardware_defines.h

@@ -13,8 +13,8 @@
 - Easy to extend for new but compatible boards */
 
 #define IS_AVR() (defined(__AVR__))  // "Classic" Arduino boards
-#define IS_TEENSY3() (defined(__MK20DX128__) || defined(__MK20DX256__) || defined(TEENSYDUINO))  // 32bit arm-based Teensy
-#define IS_STM32() (defined(__arm__) && !IS_TEENSY3)  // STM32 boards (note that only the maple based core is supported at this time. If another cores is to be supported in the future, this define should be split.
+#define IS_TEENSY3() (defined(__MK20DX128__) || defined(__MK20DX256__) || defined(__MK64FX512__) || defined(__MK66FX1M0__) || defined(__MKL26Z64__) || defined(TEENSYDUINO))  // 32bit arm-based Teensy
+#define IS_STM32() (defined(__arm__) && !IS_TEENSY3())  // STM32 boards (note that only the maple based core is supported at this time. If another cores is to be supported in the future, this define should be split.
 #define IS_ESP8266() (defined(ESP8266))
 
 #if !(IS_AVR() || IS_TEENSY3() || IS_STM32() || IS_ESP8266())