no more acquire_spi :)

src/drivers/display.cpp

@@ -284,13 +284,8 @@ void Display::SendTransaction(TransactionType type,
 
   gpio_set_level(kDisplayDr, type);
 
-  esp_err_t ret;
-  {
-    auto lock = drivers::acquire_spi();
-    // TODO(jacqueline): Handle these errors.
-    ret = spi_device_transmit(handle_, &sTransaction);
-  }
-  ESP_ERROR_CHECK(ret);
+  // TODO(jacqueline): Handle these errors better.
+  ESP_ERROR_CHECK(spi_device_transmit(handle_, &sTransaction));
 }
 
 void Display::OnLvglFlush(lv_disp_drv_t* disp_drv,

src/drivers/include/drivers/spi.hpp

@@ -13,6 +13,5 @@ namespace drivers {
 
 esp_err_t init_spi(void);
 esp_err_t deinit_spi(void);
-int acquire_spi(void);
 
 }  // namespace drivers

src/drivers/spi.cpp

@@ -56,10 +56,4 @@ esp_err_t deinit_spi(void) {
   return spi_bus_free(kSpiHost);
 }
 
-int acquire_spi(void) {
-  // Cross fingers emoji: I *think* this is now resolved???
-  // return std::lock_guard<std::mutex>{sSpiMutex};
-  return 1;
-}
-
 }  // namespace drivers

src/tangara/audio/fatfs_source.cpp

@@ -29,12 +29,10 @@ FatfsSource::FatfsSource(codecs::StreamType t, std::unique_ptr<FIL> file)
     : IStream(t), file_(std::move(file)) {}
 
 FatfsSource::~FatfsSource() {
-  auto lock = drivers::acquire_spi();
   f_close(file_.get());
 }
 
 auto FatfsSource::Read(std::span<std::byte> dest) -> ssize_t {
-  auto lock = drivers::acquire_spi();
   if (f_eof(file_.get())) {
     return 0;
   }
@@ -52,7 +50,6 @@ auto FatfsSource::CanSeek() -> bool {
 }
 
 auto FatfsSource::SeekTo(int64_t destination, SeekFrom from) -> void {
-  auto lock = drivers::acquire_spi();
   switch (from) {
     case SeekFrom::kStartOfStream:
       f_lseek(file_.get(), destination);

src/tangara/audio/fatfs_stream_factory.cpp

@@ -65,13 +65,7 @@ auto FatfsStreamFactory::create(std::string path, uint32_t offset)
   }
 
   std::unique_ptr<FIL> file = std::make_unique<FIL>();
-  FRESULT res;
-
-  {
-    auto lock = drivers::acquire_spi();
-    res = f_open(file.get(), path.c_str(), FA_READ);
-  }
-
+  FRESULT res = f_open(file.get(), path.c_str(), FA_READ);
   if (res != FR_OK) {
     ESP_LOGE(kTag, "failed to open file! res: %i", res);
     return {};

src/tangara/database/database.cpp

@@ -206,8 +206,6 @@ auto Database::schemaVersion() -> std::string {
 }
 
 auto Database::sizeOnDiskBytes() -> size_t {
-  auto lock = drivers::acquire_spi();
-
   FF_DIR dir;
   FRESULT res = f_opendir(&dir, kDbPath);
   if (res != FR_OK) {
@@ -328,12 +326,8 @@ auto Database::updateIndexes() -> void {
         continue;
       }
 
-      FRESULT res;
       FILINFO info;
-      {
-        auto lock = drivers::acquire_spi();
-        res = f_stat(track->filepath.c_str(), &info);
-      }
+      FRESULT res = f_stat(track->filepath.c_str(), &info);
 
       std::pair<uint16_t, uint16_t> modified_at{0, 0};
       if (res == FR_OK) {

src/tangara/database/env_esp.cpp

@@ -103,12 +103,10 @@ class EspSequentialFile final : public SequentialFile {
   EspSequentialFile(const std::string& filename, FIL file)
       : file_(file), filename_(filename) {}
   ~EspSequentialFile() override {
-    auto lock = drivers::acquire_spi();
     f_close(&file_);
   }
 
   Status Read(size_t n, Slice* result, char* scratch) override {
-    auto lock = drivers::acquire_spi();
     UINT read_size = 0;
     FRESULT res = f_read(&file_, scratch, n, &read_size);
     if (res != FR_OK) {  // Read error.
@@ -119,7 +117,6 @@ class EspSequentialFile final : public SequentialFile {
   }
 
   Status Skip(uint64_t n) override {
-    auto lock = drivers::acquire_spi();
     DWORD current_pos = f_tell(&file_);
     FRESULT res = f_lseek(&file_, current_pos + n);
     if (res != FR_OK) {
@@ -151,7 +148,6 @@ class EspRandomAccessFile final : public RandomAccessFile {
               size_t n,
               Slice* result,
               char* scratch) const override {
-    auto lock = drivers::acquire_spi();
     FIL file;
     FRESULT res = f_open(&file, filename_.c_str(), FA_READ);
     if (res != FR_OK) {
@@ -200,7 +196,6 @@ class EspWritableFile final : public WritableFile {
       return EspError(filename_, FR_NOT_ENABLED);
     }
 
-    auto lock = drivers::acquire_spi();
     size_t write_size = data.size();
     const char* write_data = data.data();
 
@@ -214,7 +209,6 @@ class EspWritableFile final : public WritableFile {
   }
 
   Status Close() override {
-    auto lock = drivers::acquire_spi();
     is_open_ = false;
     FRESULT res = f_close(&file_);
     if (res != FR_OK) {
@@ -229,7 +223,6 @@ class EspWritableFile final : public WritableFile {
     if (!is_open_) {
       return EspError(filename_, FR_NOT_ENABLED);
     }
-    auto lock = drivers::acquire_spi();
     FRESULT res = f_sync(&file_);
     if (res != FR_OK) {
       return EspError(filename_, res);
@@ -285,7 +278,6 @@ EspEnv::~EspEnv() {
 
 Status EspEnv::NewSequentialFile(const std::string& filename,
                                  SequentialFile** result) {
-  auto lock = drivers::acquire_spi();
   FIL file;
   FRESULT res = f_open(&file, filename.c_str(), FA_READ);
   if (res != FR_OK) {
@@ -299,7 +291,6 @@ Status EspEnv::NewSequentialFile(const std::string& filename,
 
 Status EspEnv::NewRandomAccessFile(const std::string& filename,
                                    RandomAccessFile** result) {
-  auto lock = drivers::acquire_spi();
   // EspRandomAccessFile doesn't try to open the file until it's needed, so
   // we need to first ensure the file exists to handle the NotFound case
   // correctly.
@@ -316,7 +307,6 @@ Status EspEnv::NewRandomAccessFile(const std::string& filename,
 
 Status EspEnv::NewWritableFile(const std::string& filename,
                                WritableFile** result) {
-  auto lock = drivers::acquire_spi();
   FIL file;
   FRESULT res = f_open(&file, filename.c_str(), FA_WRITE | FA_CREATE_ALWAYS);
   if (res != FR_OK) {
@@ -330,7 +320,6 @@ Status EspEnv::NewWritableFile(const std::string& filename,
 
 Status EspEnv::NewAppendableFile(const std::string& filename,
                                  WritableFile** result) {
-  auto lock = drivers::acquire_spi();
   FIL file;
   FRESULT res = f_open(&file, filename.c_str(), FA_WRITE | FA_OPEN_APPEND);
   if (res != FR_OK) {
@@ -343,7 +332,6 @@ Status EspEnv::NewAppendableFile(const std::string& filename,
 }
 
 bool EspEnv::FileExists(const std::string& filename) {
-  auto lock = drivers::acquire_spi();
   FILINFO info;
   return f_stat(filename.c_str(), &info) == FR_OK;
 }
@@ -352,7 +340,6 @@ Status EspEnv::GetChildren(const std::string& directory_path,
                            std::vector<std::string>* result) {
   result->clear();
 
-  auto lock = drivers::acquire_spi();
   FF_DIR dir;
   FRESULT res = f_opendir(&dir, directory_path.c_str());
   if (res != FR_OK) {
@@ -380,7 +367,6 @@ Status EspEnv::GetChildren(const std::string& directory_path,
 }
 
 Status EspEnv::RemoveFile(const std::string& filename) {
-  auto lock = drivers::acquire_spi();
   FRESULT res = f_unlink(filename.c_str());
   if (res != FR_OK) {
     return EspError(filename, res);
@@ -389,7 +375,6 @@ Status EspEnv::RemoveFile(const std::string& filename) {
 }
 
 Status EspEnv::CreateDir(const std::string& dirname) {
-  auto lock = drivers::acquire_spi();
   FRESULT res = f_mkdir(dirname.c_str());
   if (res != FR_OK) {
     return EspError(dirname, res);
@@ -402,7 +387,6 @@ Status EspEnv::RemoveDir(const std::string& dirname) {
 }
 
 Status EspEnv::GetFileSize(const std::string& filename, uint64_t* size) {
-  auto lock = drivers::acquire_spi();
   FILINFO info;
   FRESULT res = f_stat(filename.c_str(), &info);
   if (res != FR_OK) {
@@ -421,7 +405,6 @@ Status EspEnv::RenameFile(const std::string& from, const std::string& to) {
       return s;
     }
   }
-  auto lock = drivers::acquire_spi();
   FRESULT res = f_rename(from.c_str(), to.c_str());
   if (res != FR_OK) {
     return EspError(from, res);
@@ -460,7 +443,6 @@ Status EspEnv::GetTestDirectory(std::string* result) {
 }
 
 Status EspEnv::NewLogger(const std::string& filename, Logger** result) {
-  auto lock = drivers::acquire_spi();
   FIL file;
   FRESULT res = f_open(&file, filename.c_str(), FA_WRITE | FA_OPEN_APPEND);
   if (res != FR_OK) {

src/tangara/database/file_gatherer.cpp

@@ -33,11 +33,7 @@ auto FileGathererImpl::FindFiles(
     const TCHAR* next_path = static_cast<const TCHAR*>(next_path_str.c_str());
 
     FF_DIR dir;
-    FRESULT res;
-    {
-      auto lock = drivers::acquire_spi();
-      res = f_opendir(&dir, next_path);
-    }
+    FRESULT res = f_opendir(&dir, next_path);
     if (res != FR_OK) {
       // TODO: log.
       continue;
@@ -45,10 +41,7 @@ auto FileGathererImpl::FindFiles(
 
     for (;;) {
       FILINFO info;
-      {
-        auto lock = drivers::acquire_spi();
-        res = f_readdir(&dir, &info);
-      }
+      res = f_readdir(&dir, &info);
       if (res != FR_OK || info.fname[0] == 0) {
         // No more files in the directory.
         break;
@@ -72,7 +65,6 @@ auto FileGathererImpl::FindFiles(
       }
     }
 
-    auto lock = drivers::acquire_spi();
     f_closedir(&dir);
   }
 }

src/tangara/database/tag_parser.cpp

@@ -148,15 +148,13 @@ auto TagParserImpl::parseNew(std::string_view p) -> std::shared_ptr<TrackTags> {
   libtags::Aux aux;
   auto out = TrackTags::create();
   aux.tags = out.get();
-  {
-    auto lock = drivers::acquire_spi();
 
-    if (f_stat(path.c_str(), &aux.info) != FR_OK ||
-        f_open(&aux.file, path.c_str(), FA_READ) != FR_OK) {
-      ESP_LOGW(kTag, "failed to open file %s", path.c_str());
-      return {};
-    }
+  if (f_stat(path.c_str(), &aux.info) != FR_OK ||
+      f_open(&aux.file, path.c_str(), FA_READ) != FR_OK) {
+    ESP_LOGW(kTag, "failed to open file %s", path.c_str());
+    return {};
   }
+
   // Fine to have this on the stack; this is only called on tasks with large
   // stacks anyway, due to all the string handling.
   char buf[kBufSize];
@@ -169,12 +167,8 @@ auto TagParserImpl::parseNew(std::string_view p) -> std::shared_ptr<TrackTags> {
   ctx.buf = buf;
   ctx.bufsz = kBufSize;
 
-  int res;
-  {
-    auto lock = drivers::acquire_spi();
-    res = tagsget(&ctx);
-    f_close(&aux.file);
-  }
+  int res = tagsget(&ctx);
+  f_close(&aux.file);
 
   if (res != 0) {
     // Parsing failed.

src/tangara/lua/file_iterator.cpp

@@ -8,20 +8,15 @@
 
 #include <string>
 
-#include "ff.h"
 #include "drivers/spi.hpp"
+#include "ff.h"
 
 namespace lua {
 
 [[maybe_unused]] static const char* kTag = "FileIterator";
 
-FileIterator::FileIterator(std::string filepath) 
-: original_path_(filepath),
-  current_(),
-  offset_(-1)
- {
-  auto lock = drivers::acquire_spi();
-
+FileIterator::FileIterator(std::string filepath)
+    : original_path_(filepath), current_(), offset_(-1) {
   const TCHAR* path = static_cast<const TCHAR*>(filepath.c_str());
   FRESULT res = f_opendir(&dir_, path);
   if (res != FR_OK) {
@@ -30,7 +25,6 @@ FileIterator::FileIterator(std::string filepath)
 }
 
 FileIterator::~FileIterator() {
-  auto lock = drivers::acquire_spi();
   f_closedir(&dir_);
 }
 
@@ -48,7 +42,7 @@ auto FileIterator::prev() -> void {
     return;
   }
   f_rewinddir(&dir_);
-  auto new_offset = offset_-1;
+  auto new_offset = offset_ - 1;
   offset_ = -1;
   for (int i = 0; i <= new_offset; i++) {
     iterate(false);
@@ -56,32 +50,30 @@ auto FileIterator::prev() -> void {
 }
 
 auto FileIterator::iterate(bool reverse) -> bool {
-    FILINFO info;
-    {
-      auto lock = drivers::acquire_spi();
-      auto res = f_readdir(&dir_, &info);
-      if (res != FR_OK) {
-        ESP_LOGE(kTag, "Error reading directory. Error: %d", res);
-        return false;
-      }
-    }
-    if (info.fname[0] == 0) {
-      // End of directory
-      // Set value to nil
-      current_.reset();
-    } else {
-      // Update current value
-      offset_++;
-      current_ = FileEntry{
+  FILINFO info;
+  auto res = f_readdir(&dir_, &info);
+  if (res != FR_OK) {
+    ESP_LOGE(kTag, "Error reading directory. Error: %d", res);
+    return false;
+  }
+  if (info.fname[0] == 0) {
+    // End of directory
+    // Set value to nil
+    current_.reset();
+  } else {
+    // Update current value
+    offset_++;
+    current_ = FileEntry{
         .index = offset_,
         .isHidden = (info.fattrib & AM_HID) > 0,
         .isDirectory = (info.fattrib & AM_DIR) > 0,
-        .isTrack = false, // TODO
-        .filepath = original_path_ + (original_path_.size()>0?"/":"") + info.fname,
+        .isTrack = false,  // TODO
+        .filepath = original_path_ + (original_path_.size() > 0 ? "/" : "") +
+                    info.fname,
 
-      };
-    }
-    return true;
+    };
+  }
+  return true;
 }
 
-}  // namespace lua
+}  // namespace lua

src/tangara/system_fsm/running.cpp

@@ -82,22 +82,14 @@ void Running::react(const SdDetectChanged& ev) {
   // supriously. FIXME: Why?
   // Instead, check whether or not the card has actually gone away.
   if (sStorage) {
-    FRESULT res;
     FF_DIR dir;
-    {
-      auto lock = drivers::acquire_spi();
-      res = f_opendir(&dir, "/");
-    }
-
+    FRESULT res = f_opendir(&dir, "/");
     if (res != FR_OK) {
       ESP_LOGW(kTag, "sd card ejected unsafely!");
       unmountStorage();
     }
 
-    {
-      auto lock = drivers::acquire_spi();
-      f_closedir(&dir);
-    }
+    f_closedir(&dir);
   }
 }