From fe6734dcba5340e5337200e07bc24bed01f9415a Mon Sep 17 00:00:00 2001
From: r4 <r4@nobrain.org>
Date: Sun, 17 Apr 2022 10:47:48 +0200
Subject: [PATCH] rename U8 amplify option and comment out by default

---
 spybug/spybug.ino | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/spybug/spybug.ino b/spybug/spybug.ino
index 567d732..8740ba2 100644
--- a/spybug/spybug.ino
+++ b/spybug/spybug.ino
@@ -50,7 +50,7 @@
 //#define ADC_PRESCALE_32 /* Up to ~27kHz. */
 #define ADC_PRESCALE_64 /* Up to ~18kHz. */
 
-#define U8_EXTRA_PRECISION /* (U8 sampling mode only) use 9th ADC reading bit and chop off 1st bit for more precision (sacrificing half of the bandwidth) */
+//#define U8_AMPLIFY_X2 /* (U8 sampling mode only) amplify audio by factor 2. */
 
 #define RECORDING_DELAY_IN_MINUTES 0 /* Wait n minutes before starting to record. */
 #define ADC_CHANNEL AdcChannel0
@@ -197,7 +197,7 @@ ISR(TIMER1_COMPA_vect) {
 ISR(TIMER1_COMPB_vect) {
 	// Retrieve ADC Value and Write to Buffer
 #if defined(SAMPLE_MODE_U8)
-#ifdef U8_EXTRA_PRECISION
+#ifdef U8_AMPLIFY_X2
 	uint8_t l = ADCL; /* Read ADC registers. (Order matters!) */
 	uint8_t h = ADCH;
 	uint8_t adcval = (h << 7) | (l >> 1);
@@ -323,7 +323,7 @@ void setup() {
 #endif
 	ADCSRB = _BV(ADTS2) | _BV(ADTS0); /* Auto-trigger source select: "Timer/Counter1 Compare Match B". */
 	ADMUX = _BV(REFS0) /* Use AREF pin (VCC by default) as reference voltage. */
-#if defined(SAMPLE_MODE_U8) && !defined(U8_EXTRA_PRECISION)
+#if defined(SAMPLE_MODE_U8) && !defined(U8_AMPLIFY_X2)
 	      | _BV(ADLAR) /* Left adjust ADC output so we only need to read ADCH. */
 #endif
 		  | (0xF & ADC_CHANNEL); /* Select our ADC input channel. */