From 971f34f1b3519d7747fcf5f5a9adef22161c119a Mon Sep 17 00:00:00 2001
From: Stephen Crane <jscrane@gmail.com>
Date: Fri, 9 Nov 2018 07:25:13 +0000
Subject: [PATCH] esp8266 pwm sound

---
 hw/esp8266-pwm.h | 15 ++++++++-------
 sound_pwm.cpp    |  8 ++++++++
 2 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/hw/esp8266-pwm.h b/hw/esp8266-pwm.h
index 6b1f8ae..651906c 100644
--- a/hw/esp8266-pwm.h
+++ b/hw/esp8266-pwm.h
@@ -3,12 +3,11 @@
 //must define these in Makefile (or platformio)
 //#define USER_SETUP_LOADED
 //#define ILI9163_DRIVER
-//#define TFT_CS		5
-//#define TFT_DC		2
-//#define TFT_MOSI	23
-//#define TFT_MISO	-1
-//#define TFT_SCLK	18
-//#define TFT_RST		-1
+//#define TFT_CS	PIN_D6
+//#define TFT_DC	PIN_D8
+//#define TFT_WIDTH	240
+//#define TFT_HEIGHT	320
+//#define TFT_RST	-1
 //#define SPI_FREQUENCY	40000000
 //#define LOAD_GLCD
 
@@ -21,7 +20,9 @@
 
 // "tape" storage...
 #undef SD_CS
+#undef USE_SPIFFS
 
 // sound
-#define PWM_SOUND	25
+#define PWM_SOUND	D2
 #define PWM_DUTY	20	// 20/1024 -> volume
+#define PWM_TOP		1024
diff --git a/sound_pwm.cpp b/sound_pwm.cpp
index 580d59e..d4905a6 100644
--- a/sound_pwm.cpp
+++ b/sound_pwm.cpp
@@ -1,3 +1,4 @@
+#include <Arduino.h>
 #include "sound_pwm.h"
 #include "hardware.h"
 
@@ -40,15 +41,22 @@ void PWM::set_freq(unsigned freq) {
 }
 
 #else
+static unsigned pin;
+
 void PWM::begin(unsigned gpio) {
+	pin = gpio;
+	analogWriteRange(PWM_TOP);
 }
 
 void PWM::set_duty(unsigned duty) {
+	analogWrite(pin, duty);
 }
 
 void PWM::stop() {
+	analogWrite(pin, 0);
 }
 
 void PWM::set_freq(unsigned freq) {
+	analogWriteFreq(freq);
 }
 #endif