From b4e135dc5009cd4760dc72da5888468f1281dfba Mon Sep 17 00:00:00 2001
From: FedericoBusero <35894905+FedericoBusero@users.noreply.github.com>
Date: Sun, 16 Oct 2022 17:43:54 +0200
Subject: [PATCH 1/3] Fix ULP on ESP32

CONFIG_IDF_TARGET_ESP32 is not yet defined before #include "AudioOutputULP.h"
---
 src/AudioOutputULP.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/AudioOutputULP.cpp b/src/AudioOutputULP.cpp
index d8f4e027..7dd3715c 100644
--- a/src/AudioOutputULP.cpp
+++ b/src/AudioOutputULP.cpp
@@ -18,9 +18,12 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#if CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
+#ifdef ESP32
 
 #include "AudioOutputULP.h"
+
+#if CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
+
 #include <esp32/ulp.h>
 #include <driver/rtc_io.h>
 #include <driver/dac.h>
@@ -260,3 +263,4 @@ bool AudioOutputULP::stop()
 }
 
 #endif
+#endif

From 550ab782d35c39cebf0278e8778f90f21453cf6e Mon Sep 17 00:00:00 2001
From: FedericoBusero <35894905+FedericoBusero@users.noreply.github.com>
Date: Sun, 16 Oct 2022 17:45:01 +0200
Subject: [PATCH 2/3] AudioOutputULP: Fix DAC2 stereo in case of DAC1+DAC2

---
 src/AudioOutputULP.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/AudioOutputULP.cpp b/src/AudioOutputULP.cpp
index 7dd3715c..1b3c6d76 100644
--- a/src/AudioOutputULP.cpp
+++ b/src/AudioOutputULP.cpp
@@ -169,7 +169,7 @@ bool AudioOutputULP::begin()
       {
         RTC_SLOW_MEM[dacTableStart1 + i * 2] = create_I_WR_REG(RTC_IO_PAD_DAC1_REG,19,26,i); //dac1: 0x1D4C0121 | (i << 10)
         RTC_SLOW_MEM[dacTableStart1 + 1 + i * 2] = create_I_BXI(retAddress1); // 0x80000000 + retAddress1 * 4
-        RTC_SLOW_MEM[dacTableStart2 + i * 2] = create_I_WR_REG(RTC_IO_PAD_DAC1_REG,19,26,i); //dac2: 0x1D4C0122 | (i << 10)
+        RTC_SLOW_MEM[dacTableStart2 + i * 2] = create_I_WR_REG(RTC_IO_PAD_DAC2_REG,19,26,i); //dac2: 0x1D4C0122 | (i << 10)
         RTC_SLOW_MEM[dacTableStart2 + 1 + i * 2] = create_I_BXI(retAddress2); // 0x80000000 + retAddress2 * 4
       }
       break;

From d3e18fd8badf4fbd9dac0eab9169405f2c49e7f0 Mon Sep 17 00:00:00 2001
From: FedericoBusero <35894905+FedericoBusero@users.noreply.github.com>
Date: Tue, 25 Apr 2023 21:42:55 +0200
Subject: [PATCH 3/3] ULP - no ESP32S2 / S3

On ESP32S2 it compiles, but no audio is coming out
On ESP32S3 DAC is not supported
---
 src/AudioOutputULP.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/AudioOutputULP.cpp b/src/AudioOutputULP.cpp
index 1b3c6d76..99eecfa0 100644
--- a/src/AudioOutputULP.cpp
+++ b/src/AudioOutputULP.cpp
@@ -22,7 +22,7 @@
 
 #include "AudioOutputULP.h"
 
-#if CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
+#if CONFIG_IDF_TARGET_ESP32
 
 #include <esp32/ulp.h>
 #include <driver/rtc_io.h>