ESP:Use spiffs in ESP OTA Provider example (project-chip#12400)

* Use spiffs in ESP OTA Provider Example

* Temporarily fix the compilation errors for ESP OTA Requestor app

* Restyled by prettier-markdown

* Modify the README.md files

Co-authored-by: Restyled.io <commits@restyled.io>

Author: wqx6

examples/ota-provider-app/esp32/README.md

@@ -5,40 +5,31 @@ A prototype application that demonstrates OTA provider capabilities.
 ## Supported Devices
 
 -   This example supports ESP32 and ESP32C3. For details please check
-    [here](https://github.com/shubhamdp/connectedhomeip/tree/shubhamdp-patch-1/examples/all-clusters-app/esp32#supported-devices).
+    [here](https://github.com/project-chip/connectedhomeip/tree/master/examples/all-clusters-app/esp32#supported-devices).
 
-## Building the Example Application
-
--   If you are building for the first time please check
-    [Building the Example Application](https://github.com/shubhamdp/connectedhomeip/tree/shubhamdp-patch-1/examples/all-clusters-app/esp32#building-the-example-application)
-    guide.
--   Otherwise, `idf.py build` works!
+## Copy the OTA image
 
-## Flashing the Example Application
+-   Copy the binary file which you are going to send to the OTA Requestor to
+    `./spiffs_image` path and make sure the `OTA_IMAGE_NAME` is the same as the
+    name of the image file you placed in `./spiffs_image`.
 
 ```
-idf.py -p <OTAProviderSerialPort> flash
+idf.py menuconfig
 ```
 
-## Flashing the hello-world.bin OTA image
-
-Flash hello-world OTA image on OTA Provider's "ota_data" flash partition. Please
-find hello-world.bin
-[here](http://shubhamdp.github.io/esp_ota/esp32/hello-world-flash-in-ota-provider-partition.bin).
-This OTA image is built for ESP32, it will not work on other devices. This is
-the OTA upgrade image and will be sent to OTA requestor.
+-   Edit the `OTA_IMAGE_NAME` through `Demo`->`OTA image file name`.
 
-```
-esptool.py -p <OTAProviderSerialPort> write_flash 0x206400 hello-world-flash-in-ota-provider-partition.bin
-```
+## Building the Example Application
 
-NOTE: This is a modified binary which contains the size of OTA image at first 4
-bytes.
+-   If you are building for the first time please check
+    [Building the Example Application](https://github.com/project-chip/connectedhomeip/tree/master/examples/all-clusters-app/esp32#building-the-example-application)
+    guide.
+-   Otherwise, `idf.py build` works!
 
-Run the idf monitor
+## Flashing the Example Application
 
 ```
-idf.py -p <OTAProviderSerialPort> monitor
+idf.py -p <OTAProviderSerialPort> flash
 ```
 
 ## Commissioning over BLE using chip-tool

examples/ota-provider-app/esp32/main/CMakeLists.txt

@@ -45,7 +45,8 @@ idf_component_register(PRIV_INCLUDE_DIRS
                       "${CMAKE_SOURCE_DIR}/third_party/connectedhomeip/examples/ota-provider-app/ota-provider-common"
                       EXCLUDE_SRCS
                       "${CMAKE_SOURCE_DIR}/third_party/connectedhomeip/examples/ota-provider-app/ota-provider-common/BdxOtaSender.cpp"
-                      PRIV_REQUIRES chip QRCode bt console)
+                      PRIV_REQUIRES chip QRCode bt console spiffs)
 
+spiffs_create_partition_image(img_storage ../spiffs_image FLASH_IN_PROJECT)
 set_property(TARGET ${COMPONENT_LIB} PROPERTY CXX_STANDARD 14) 
 target_compile_options(${COMPONENT_LIB} PRIVATE "-DLWIP_IPV6_SCOPES=0" "-DCHIP_HAVE_CONFIG_H")

examples/ota-provider-app/esp32/main/Kconfig.projbuild

@@ -47,4 +47,10 @@ menu "Demo"
        default 4 if RENDEZVOUS_MODE_THREAD
        default 8 if RENDEZVOUS_MODE_ETHERNET
 
+    config OTA_IMAGE_NAME
+        string "OTA image file name"
+        default "hello_world.bin"
+        help
+            Name of OTA image file which will be added to '/spiffs_image/' and sent to the OTA Requestor.
+
 endmenu

examples/ota-provider-app/esp32/main/main.cpp

@@ -21,6 +21,7 @@
 #include "esp_log.h"
 #include "esp_netif.h"
 #include "esp_spi_flash.h"
+#include "esp_spiffs.h"
 #include "esp_system.h"
 #include "esp_wifi.h"
 #include "freertos/FreeRTOS.h"
@@ -60,7 +61,8 @@ void OnTransferComplete(void * context);
 void OnTransferFailed(void * context, BdxSenderErrorTypes status);
 
 namespace {
-const char * TAG = "ota-provider-app";
+const char * TAG               = "ota-provider-app";
+const uint8_t kMaxImagePathlen = 35;
 static DeviceCallbacks EchoCallbacks;
 BdxOtaSender bdxServer;
 
@@ -69,10 +71,11 @@ constexpr chip::EndpointId kOtaProviderEndpoint     = 0;
 constexpr uint32_t kMaxBdxBlockSize                 = 1024;
 constexpr chip::System::Clock::Timeout kBdxTimeout  = chip::System::Clock::Seconds16(5 * 60); // Specification mandates >= 5 minutes
 constexpr chip::System::Clock::Timeout kBdxPollFreq = chip::System::Clock::Milliseconds32(500);
-const char * otaFilename                            = "hello-world.bin";
-const esp_partition_t * otaPartition                = nullptr;
+const char * otaFilename                            = CONFIG_OTA_IMAGE_NAME;
+FILE * otaImageFile                                 = NULL;
 uint32_t otaImageLen                                = 0;
 uint32_t otaTransferInProgress                      = false;
+static OTAProviderExample otaProvider;
 
 chip::Callback::Callback<OnBdxBlockQuery> onBlockQueryCallback(OnBlockQuery, nullptr);
 chip::Callback::Callback<OnBdxTransferComplete> onTransferCompleteCallback(OnTransferComplete, nullptr);
@@ -83,22 +86,17 @@ CHIP_ERROR OnBlockQuery(void * context, chip::System::PacketBufferHandle & block
 {
     if (otaTransferInProgress == false)
     {
-        if (otaPartition == nullptr || otaImageLen == 0)
+        if (otaImageFile == NULL || otaImageLen == 0)
         {
-            ESP_LOGE(TAG, "OTA partition not found");
+            ESP_LOGE(TAG, "Failed to open the OTA image file");
             return CHIP_ERROR_OPEN_FAILED;
         }
         otaTransferInProgress = true;
     }
-
     uint16_t blockBufAvailableLength = blockBuf->AvailableDataLength();
     uint16_t transferBlockSize       = bdxServer.GetTransferBlockSize();
 
     size = (blockBufAvailableLength < transferBlockSize) ? blockBufAvailableLength : transferBlockSize;
-
-    // There are two types of messages requestor can use to query a block: `BlockQuery` and `BlockQueryWithSkip` so,
-    // to handle both case in a single callback offset is used which is managed by the `BdxOtaSender`.
-    // So, offset + size will not overflow and even if it overflows the esp_partition_read API will return an error.
     if (offset + size >= otaImageLen)
     {
         size  = otaImageLen - offset;
@@ -108,17 +106,15 @@ CHIP_ERROR OnBlockQuery(void * context, chip::System::PacketBufferHandle & block
     {
         isEof = false;
     }
-
-    esp_err_t err = esp_partition_read(otaPartition, offset + sizeof(otaImageLen), blockBuf->Start(), size);
-    if (err != ESP_OK)
+    size_t size_read = fread(blockBuf->Start(), 1, size, otaImageFile);
+    if (size_read != size)
     {
-        ESP_LOGI(TAG, "Failed to read %d bytes from offset %d", size, offset + sizeof(otaImageLen));
+        ESP_LOGE(TAG, "Failed to read %d bytes from %s", size, otaFilename);
         size  = 0;
         isEof = false;
         return CHIP_ERROR_READ_FAILED;
     }
-
-    ESP_LOGI(TAG, "Read %d bytes from offset %d", size, offset + sizeof(otaImageLen));
+    ESP_LOGI(TAG, "Read %d bytes from %s", size, otaFilename);
     return CHIP_NO_ERROR;
 }
 
@@ -157,8 +153,6 @@ extern "C" void app_main()
         return;
     }
 
-    OTAProviderExample otaProvider;
-
     CHIPDeviceManager & deviceMgr = CHIPDeviceManager::GetInstance();
 
     CHIP_ERROR error = deviceMgr.Init(&EchoCallbacks);
@@ -188,26 +182,34 @@ extern "C" void app_main()
     callbacks.onTransferFailed   = &onTransferFailedCallback;
     bdxServer.SetCallbacks(callbacks);
 
-    // If OTA image is available in flash storage then set to update available
-    otaPartition = esp_partition_find_first(ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_DATA_NVS, "ota_data");
-    if (otaPartition != nullptr)
-    {
-        ESP_LOGI(TAG, "Partition found %s address:0x%x size:0x%x", otaPartition->label, otaPartition->address, otaPartition->size);
+    esp_vfs_spiffs_conf_t spiffs_conf = {
+        .base_path              = "/spiffs",
+        .partition_label        = NULL,
+        .max_files              = 3,
+        .format_if_mount_failed = false,
+    };
 
-        // TODO: Use the OTA image header specified in the specification
-        //       Right now we are using just image length instead of full header
-        esp_partition_read(otaPartition, 0, &otaImageLen, sizeof(otaImageLen));
-        if (otaImageLen > otaPartition->size)
-        {
-            otaImageLen = 0;
-        }
-        ESP_LOGI(TAG, "OTA image length %d bytes", otaImageLen);
+    err = esp_vfs_spiffs_register(&spiffs_conf);
+    if (err != ESP_OK)
+    {
+        ESP_LOGE(TAG, "Failed to initialize SPIFFS (%s)", esp_err_to_name(err));
+        return;
     }
-    else
+    size_t total = 0, used = 0;
+    err = esp_spiffs_info(NULL, &total, &used);
+    ESP_LOGI(TAG, "Partition size: total: %d, used: %d", total, used);
+    char otaImagePath[kMaxImagePathlen];
+    sprintf(otaImagePath, "/spiffs/%s", otaFilename);
+    otaImageFile = fopen(otaImagePath, "r");
+    if (otaImageFile == NULL)
     {
-        ESP_LOGE(TAG, "OTA partition not found");
+        ESP_LOGE(TAG, "Failed to open %s", otaFilename);
+        return;
     }
-
+    fseek(otaImageFile, 0, SEEK_END);
+    otaImageLen = ftell(otaImageFile);
+    rewind(otaImageFile);
+    ESP_LOGI(TAG, "The OTA image size: %d", otaImageLen);
     if (otaImageLen > 0)
     {
         otaProvider.SetQueryImageBehavior(OTAProviderExample::kRespondWithUpdateAvailable);

examples/ota-provider-app/esp32/partitions.csv

@@ -1,10 +1,8 @@
 # Name,   Type, SubType, Offset,  Size, Flags
 # Note: if you have increased the bootloader size, make sure to update the offsets to avoid overlap
 nvs,      data, nvs,     ,        0x6000,
-otadata,  data, ota,     ,        0x2000,
 phy_init, data, phy,     ,        0x1000,
-# Factory partition size about 1.9MB
-factory,  app,  factory, ,        1945K,
-# OTA partition of size 1M
-ota_data, data, nvs,     ,        1M,
-# ota_1,    app,  ota_1,   ,        512K,
+# Factory partition size about 1.5MB
+factory,  app,  factory, ,        1500K,
+# spiffs partition to storage the image file size about 1.5MB
+img_storage,  data, spiffs,     ,     1500K,

examples/ota-provider-app/esp32/spiffs_image/hello_world.bin

@@ -10,12 +10,12 @@ Before moving ahead, make sure you have
 ## Supported Devices
 
 -   This example supports ESP32 and ESP32C3. For details please check
-    [here](https://github.com/shubhamdp/connectedhomeip/tree/shubhamdp-patch-1/examples/all-clusters-app/esp32#supported-devices).
+    [here](https://github.com/project-chip/connectedhomeip/tree/master/examples/all-clusters-app/esp32#supported-devices).
 
 ## Building the Example Application
 
 -   If you are building for the first time please check
-    [Building the Example Application](https://github.com/shubhamdp/connectedhomeip/tree/shubhamdp-patch-1/examples/all-clusters-app/esp32#building-the-example-application)
+    [Building the Example Application](https://github.com/project-chip/connectedhomeip/tree/master/examples/all-clusters-app/esp32#building-the-example-application)
     guide.
 -   Otherwise, `idf.py build` works!
 

examples/ota-requestor-app/esp32/README.md

@@ -32,12 +32,12 @@
 
 using chip::ByteSpan;
 using chip::CharSpan;
-using chip::DeviceProxy;
 using chip::EndpointId;
 using chip::FabricIndex;
 using chip::NodeId;
 using chip::OnDeviceConnected;
 using chip::OnDeviceConnectionFailure;
+using chip::OperationalDeviceProxy;
 using chip::Optional;
 using chip::PeerId;
 using chip::Server;
@@ -55,7 +55,7 @@ void OnQueryImageFailure(void * context, EmberAfStatus status);
 void OnApplyUpdateResponse(void * context, const ApplyUpdateResponse::DecodableType & response);
 void OnApplyUpdateRequestFailure(void * context, EmberAfStatus status);
 
-void OnConnected(void * context, chip::DeviceProxy * deviceProxy);
+void OnConnected(void * context, chip::OperationalDeviceProxy * deviceProxy);
 void OnConnectionFailure(void * context, NodeId deviceId, CHIP_ERROR error);
 
 void OnBlockReceived(void * context, const chip::bdx::TransferSession::BlockData & blockdata);
@@ -174,7 +174,7 @@ void OnApplyUpdateRequestFailure(void * context, EmberAfStatus status)
     ChipLogDetail(SoftwareUpdate, "ApplyUpdateRequest failure response %" PRIu8, status);
 }
 
-void OnConnected(void * context, chip::DeviceProxy * deviceProxy)
+void OnConnected(void * context, chip::OperationalDeviceProxy * deviceProxy)
 {
     ChipLogDetail(SoftwareUpdate, "Callback OnConnected");
     uint8_t * command = reinterpret_cast<uint8_t *>(context);

examples/ota-requestor-app/esp32/main/OTARequesterImpl.cpp

@@ -17,6 +17,8 @@
 
 #include "CHIPDeviceManager.h"
 #include "DeviceCallbacks.h"
+#include "app/util/af-enums.h"
+#include "app/util/af.h"
 #include "esp_heap_caps_init.h"
 #include "esp_log.h"
 #include "esp_netif.h"
@@ -180,3 +182,14 @@ extern "C" void app_main()
 
     ESPInitConsole();
 }
+
+// TODO: We should use the function definition in /src/app/clusters/ota-requestor/ClusterInterface.cpp
+// Temporarily add this function.
+
+bool emberAfOtaSoftwareUpdateRequestorClusterAnnounceOtaProviderCallback(
+    chip::app::CommandHandler * commandObj, const chip::app::ConcreteCommandPath & commandPath,
+    const chip::app::Clusters::OtaSoftwareUpdateRequestor::Commands::AnnounceOtaProvider::DecodableType & commandData)
+{
+    emberAfSendImmediateDefaultResponse(EMBER_ZCL_STATUS_SUCCESS);
+    return true;
+}