From a10ac1aea3c9077188c979a277579ec19f89717e Mon Sep 17 00:00:00 2001
From: Thomas Jentzsch <76921504+yellobyte@users.noreply.github.com>
Date: Sat, 27 Jul 2024 23:19:54 +0200
Subject: [PATCH] Fix for Arduino ESP32 version 3.x.x

---
 library.json       |  2 +-
 library.properties |  2 +-
 src/DacESP32.cpp   | 16 ++++++++--------
 src/DacESP32.h     |  5 +++--
 4 files changed, 13 insertions(+), 12 deletions(-)

diff --git a/library.json b/library.json
index 7fc5053..54a3727 100644
--- a/library.json
+++ b/library.json
@@ -1,6 +1,6 @@
 {
   "name": "DacESP32",
-  "version": "1.1.0", 
+  "version": "1.1.1",
   "platforms":
   [
     "espressif32"
diff --git a/library.properties b/library.properties
index db8be98..df563a3 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=DacESP32
-version=1.1.0
+version=1.1.1
 author=Thomas Jentzsch
 maintainer=Thomas Jentzsch <yellobyte@bluewin.ch>
 sentence=Arduino library for using the ESP32 DAC output channels fast and easy.
diff --git a/src/DacESP32.cpp b/src/DacESP32.cpp
index 4662bb1..b6cda42 100644
--- a/src/DacESP32.cpp
+++ b/src/DacESP32.cpp
@@ -73,7 +73,7 @@
 #endif
 
 #define CHANNEL_CHECK                               \
-  if (m_channel == DAC_CHANNEL_UNDEFINED) {         \
+  if (m_channel == DAC_CHAN_UNDEFINED) {            \
     log_e("channel setting invalid");               \
     return ESP_FAIL;                                \
   } 
@@ -92,7 +92,7 @@ DacESP32::DacESP32(dac_channel_t channel)
   m_objectCount++;
 
   if (channel != DAC_CHANNEL_1 && channel != DAC_CHANNEL_2) {
-    m_channel = DAC_CHANNEL_UNDEFINED;
+    m_channel = DAC_CHAN_UNDEFINED;
     return;
   }
 
@@ -114,8 +114,8 @@ DacESP32::DacESP32(dac_channel_t channel)
     REG_SET_FIELD(RTC_CNTL_CLK_CONF_REG, RTC_CNTL_CK8M_DIV_SEL, 0);
   }
   
-  if (m_objectCount > DAC_CHANNEL_MAX) {
-    log_w("DacESP32 objects created = %d > %d (DAC channels available) !", m_objectCount, DAC_CHANNEL_MAX);
+  if (m_objectCount > DAC_CHAN_MAX) {
+    log_w("DacESP32 objects created = %d > %d (DAC channels available) !", m_objectCount, DAC_CHAN_MAX);
   }
 }
 
@@ -125,7 +125,7 @@ DacESP32::DacESP32(dac_channel_t channel)
 //
 DacESP32::DacESP32(gpio_num_t pin) 
   : DacESP32((dac_channel_t)(pin == DAC_CHANNEL_1_GPIO_NUM) ? DAC_CHANNEL_1 : 
-                            (pin == DAC_CHANNEL_2_GPIO_NUM) ? DAC_CHANNEL_2 : DAC_CHANNEL_UNDEFINED)
+                            (pin == DAC_CHANNEL_2_GPIO_NUM) ? DAC_CHANNEL_2 : DAC_CHAN_UNDEFINED)
 {
 }
 
@@ -137,7 +137,7 @@ DacESP32::~DacESP32()
   // decrease object counter
   m_objectCount--;
 
-  if (m_channel != DAC_CHANNEL_UNDEFINED) {
+  if (m_channel != DAC_CHAN_UNDEFINED) {
     dac_output_disable(m_channel);
   }
 
@@ -169,7 +169,7 @@ esp_err_t DacESP32::setChannel(dac_channel_t channel)
   }
 
   if (m_channel != channel) {
-    if (m_channel != DAC_CHANNEL_UNDEFINED) {
+    if (m_channel != DAC_CHAN_UNDEFINED) {
       dac_output_disable(m_channel);
     }
     dac_output_disable(channel);
@@ -182,7 +182,7 @@ esp_err_t DacESP32::setChannel(dac_channel_t channel)
 esp_err_t DacESP32::setPin(gpio_num_t pin)
 {
   return setChannel((dac_channel_t)(pin == DAC_CHANNEL_1_GPIO_NUM) ? DAC_CHANNEL_1 : 
-                                   (pin == DAC_CHANNEL_2_GPIO_NUM) ? DAC_CHANNEL_2 : DAC_CHANNEL_UNDEFINED);
+                                   (pin == DAC_CHANNEL_2_GPIO_NUM) ? DAC_CHANNEL_2 : DAC_CHAN_UNDEFINED);
 }
 
 //
diff --git a/src/DacESP32.h b/src/DacESP32.h
index 7fc63c0..df6a908 100644
--- a/src/DacESP32.h
+++ b/src/DacESP32.h
@@ -69,9 +69,10 @@
 #define RTCIO_PAD_PDAC_DAC_XPD_FORCE_V  0x1
 #define RTCIO_PAD_PDAC_DAC_XPD_FORCE_S  10
 
-#define DAC_CHANNEL_UNDEFINED (dac_channel_t) -1
+#define DAC_CHAN_UNDEFINED (dac_channel_t) -1
+#define DAC_CHAN_MAX       (dac_channel_t)  2
 #define DAC_CW_OFFSET_DEFAULT 0
-#define CK8M_DIV_MAX 7
+#define CK8M_DIV_MAX          7
 
 // Master clock for digital controller section of both DAC & ADC systems. 
 // According to spec the frequency is approximately 8MHz. Don't change value.