From d5d6e3993cd67238ff245446e69e2f200c3fd0e5 Mon Sep 17 00:00:00 2001
From: jacqueline <me@jacqueline.id.au>
Date: Mon, 4 Sep 2023 16:17:55 +1000
Subject: Support changing max volume, persisted to nvs

---
 src/drivers/nvs.cpp | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

(limited to 'src/drivers/nvs.cpp')

diff --git a/src/drivers/nvs.cpp b/src/drivers/nvs.cpp
index c2832bf4..7bd1afe2 100644
--- a/src/drivers/nvs.cpp
+++ b/src/drivers/nvs.cpp
@@ -17,6 +17,7 @@
 #include "nvs.h"
 #include "nvs_flash.h"
 #include "tasks.hpp"
+#include "wm8523.hpp"
 
 namespace drivers {
 
@@ -27,6 +28,8 @@ static constexpr char kKeyVersion[] = "ver";
 static constexpr char kKeyBluetooth[] = "bt";
 static constexpr char kKeyOutput[] = "out";
 static constexpr char kKeyBrightness[] = "bright";
+static constexpr char kKeyAmpMaxVolume[] = "hp_vol_max";
+static constexpr char kKeyAmpCurrentVolume[] = "hp_vol";
 
 auto NvsStorage::OpenSync() -> NvsStorage* {
   esp_err_t err = nvs_flash_init();
@@ -154,4 +157,34 @@ auto NvsStorage::ScreenBrightness(uint_fast8_t val) -> std::future<bool> {
   });
 }
 
+auto NvsStorage::AmpMaxVolume() -> std::future<uint16_t> {
+  return writer_->Dispatch<uint16_t>([&]() -> uint16_t {
+    uint16_t out = wm8523::kDefaultMaxVolume;
+    nvs_get_u16(handle_, kKeyAmpMaxVolume, &out);
+    return out;
+  });
+}
+
+auto NvsStorage::AmpMaxVolume(uint16_t val) -> std::future<bool> {
+  return writer_->Dispatch<bool>([&]() {
+    nvs_set_u16(handle_, kKeyAmpMaxVolume, val);
+    return nvs_commit(handle_) == ESP_OK;
+  });
+}
+
+auto NvsStorage::AmpCurrentVolume() -> std::future<uint16_t> {
+  return writer_->Dispatch<uint16_t>([&]() -> uint16_t {
+    uint16_t out = wm8523::kDefaultVolume;
+    nvs_get_u16(handle_, kKeyAmpCurrentVolume, &out);
+    return out;
+  });
+}
+
+auto NvsStorage::AmpCurrentVolume(uint16_t val) -> std::future<bool> {
+  return writer_->Dispatch<bool>([&]() {
+    nvs_set_u16(handle_, kKeyAmpCurrentVolume, val);
+    return nvs_commit(handle_) == ESP_OK;
+  });
+}
+
 }  // namespace drivers
-- 
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