From 9f584857a77cf80d7726ae920897f8f5ed184c90 Mon Sep 17 00:00:00 2001
From: IC-Alchemy <153705720+IC-Alchemy@users.noreply.github.com>
Date: Thu, 16 May 2024 21:58:40 -0600
Subject: [PATCH] Update daisy_patch_sm.cpp

Removed redundant internal DAC buffer.

Increases DAC range by around 0.4 Volts
Allows for the full 0.0v - 3.3v range.

"With internal buffer on, the min DAC_OUT is 0.2V and max DAC_OUT is VDDA-0.2V"

Page 163
https://www.st.com/resource/en/datasheet/stm32h750ib.pdf
---
 src/daisy_patch_sm.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/daisy_patch_sm.cpp b/src/daisy_patch_sm.cpp
index f56b8eca9..cfcbf0438 100644
--- a/src/daisy_patch_sm.cpp
+++ b/src/daisy_patch_sm.cpp
@@ -181,7 +181,7 @@ namespace patch_sm
         dac_config.bitdepth = DacHandle::BitDepth::
             BITS_12; /**< Sets the output value to 0-4095 */
         dac_config.chn               = DacHandle::Channel::BOTH;
-        dac_config.buff_state        = DacHandle::BufferState::ENABLED;
+        dac_config.buff_state        = DacHandle::BufferState::DISABLED;    //  Internal buffer disabled on Patch_SM
         dac_config.target_samplerate = 48000;
         dac_.Init(dac_config);
     }
@@ -546,4 +546,4 @@ namespace patch_sm
 
 } // namespace patch_sm
 
-} // namespace daisy
\ No newline at end of file
+} // namespace daisy