add github action (#296)

Co-authored-by: zhouli <zhouli@espressif.com>

.github/workflows/build.yml

@@ -0,0 +1,75 @@
+name: Build examples
+on: push
+
+jobs:
+  build-master:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repo
+      uses: actions/checkout@v2
+      with:
+        submodules: 'recursive'
+    - name: esp-idf build
+      uses: espressif/esp-idf-ci-action@latest
+      with:
+        path: 'examples'
+
+  build-release-v4_0:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repo
+      uses: actions/checkout@v2
+      with:
+        submodules: 'recursive'
+    - name: esp-idf build
+      uses: espressif/esp-idf-ci-action@release-v4.0
+      with:
+        path: 'examples'
+
+  build-release-v4_1:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repo
+      uses: actions/checkout@v2
+      with:
+        submodules: 'recursive'
+    - name: esp-idf build
+      uses: espressif/esp-idf-ci-action@release-v4.1
+      with:
+        path: 'examples'
+
+  build-release-v4_2:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repo
+      uses: actions/checkout@v2
+      with:
+        submodules: 'recursive'
+    - name: esp-idf build
+      uses: espressif/esp-idf-ci-action@release-v4.2
+      with:
+        path: 'examples'
+
+  build-release-v4_3:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repo
+      uses: actions/checkout@v2
+      with:
+        submodules: 'recursive'
+    - name: esp-idf build
+      uses: espressif/esp-idf-ci-action@release-v4.3
+      with:
+        path: 'examples'
+
+  build-release-v3_3:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repo
+      uses: actions/checkout@v2
+      with:
+        submodules: 'recursive'
+    - name: esp-idf build
+      uses: espressif/esp-idf-ci-action@release-v3.3
+      with:
+        path: 'examples'

.gitignore

@@ -1 +1,5 @@
 *.DS_Store
+.vscode
+**/build
+**/sdkconfig
+**/sdkconfig.old

README.md

@@ -1,5 +1,6 @@
 # ESP32 Camera Driver
 
+[![Build examples](https://github.com/espressif/esp32-camera/actions/workflows/build.yml/badge.svg)](https://github.com/espressif/esp32-camera/actions/workflows/build.yml)
 ## General Information
 
 This repository hosts ESP32 series Soc compatible driver for image sensors. Additionally it provides a few tools, which allow converting the captured frame data to the more common BMP and JPEG formats.

examples/CMakeLists.txt

@@ -0,0 +1,9 @@
+# The following lines of boilerplate have to be in your project's
+# CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.5)
+
+set(EXTRA_COMPONENT_DIRS "../")
+
+add_compile_options(-fdiagnostics-color=always)
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(camera_example)

examples/Makefile

@@ -0,0 +1,11 @@
+#
+# This is a project Makefile. It is assumed the directory this Makefile resides in is a
+# project subdirectory.
+#
+
+PROJECT_NAME := camera_example
+
+EXTRA_COMPONENT_DIRS := ../
+
+include $(IDF_PATH)/make/project.mk
+

examples/main/CMakeLists.txt

@@ -0,0 +1,3 @@
+set(COMPONENT_SRCS take_picture.c)
+set(COMPONENT_ADD_INCLUDEDIRS .)
+register_component()

examples/main/component.mk

@@ -0,0 +1,5 @@
+#
+# "main" pseudo-component makefile.
+#
+# (Uses default behaviour of compiling all source files in directory, adding 'include' to include path.)
+

examples/main/take_picture.c

@@ -29,7 +29,6 @@
 
 // ================================ CODE ======================================
 
-#include <esp_event_loop.h>
 #include <esp_log.h>
 #include <esp_system.h>
 #include <nvs_flash.h>
@@ -41,6 +40,8 @@
 
 #include "esp_camera.h"
 
+#define BOARD_WROVER_KIT 1
+
 // WROVER-KIT PIN Map
 #ifdef BOARD_WROVER_KIT
 
@@ -113,8 +114,8 @@ static camera_config_t camera_config = {
     .ledc_timer = LEDC_TIMER_0,
     .ledc_channel = LEDC_CHANNEL_0,
 
-    .pixel_format = PIXFORMAT_JPEG, //YUV422,GRAYSCALE,RGB565,JPEG
+    .pixel_format = PIXFORMAT_RGB565, //YUV422,GRAYSCALE,RGB565,JPEG
-    .frame_size = FRAMESIZE_VGA,    //QQVGA-UXGA Do not use sizes above QVGA when not JPEG
+    .frame_size = FRAMESIZE_QVGA,    //QQVGA-UXGA Do not use sizes above QVGA when not JPEG
 
     .jpeg_quality = 12, //0-63 lower number means higher quality
     .fb_count = 1,       //if more than one, i2s runs in continuous mode. Use only with JPEG
@@ -136,7 +137,9 @@ static esp_err_t init_camera()
 
 void app_main()
 {
-    init_camera();
+    if(ESP_OK != init_camera()) {
+        return;
+    }
 
     while (1)
     {
@@ -149,4 +152,4 @@ void app_main()
 
         vTaskDelay(5000 / portTICK_RATE_MS);
     }
-}
+}

examples/sdkconfig.defaults

@@ -0,0 +1,17 @@
+CONFIG_ESP32_DEFAULT_CPU_FREQ_240=y
+CONFIG_ESP32S2_DEFAULT_CPU_FREQ_240=y
+CONFIG_ESP32S3_DEFAULT_CPU_FREQ_240=y
+
+CONFIG_ESPTOOLPY_FLASHSIZE_4MB=y
+CONFIG_PARTITION_TABLE_OFFSET=0x10000
+
+CONFIG_FREERTOS_HZ=1000
+CONFIG_ESPTOOLPY_FLASHFREQ_80M=y
+CONFIG_ESPTOOLPY_FLASHMODE_QIO=y
+
+CONFIG_SPIRAM_SUPPORT=y
+CONFIG_ESP32_SPIRAM_SUPPORT=y
+CONFIG_ESP32S2_SPIRAM_SUPPORT=y
+CONFIG_ESP32S3_SPIRAM_SUPPORT=y
+CONFIG_SPIRAM_SPEED_80M=y
+

target/esp32/ll_cam.c

@@ -16,10 +16,9 @@
 #include <string.h>
 #include "soc/i2s_struct.h"
 #include "esp_idf_version.h"
-#if ESP_IDF_VERSION_MAJOR >= 4
+#if (ESP_IDF_VERSION_MAJOR >= 4) && (ESP_IDF_VERSION_MINOR > 1)
 #include "hal/gpio_ll.h"
 #else
-#include "rom/ets_sys.h"
 #include "soc/gpio_periph.h"
 #define esp_rom_delay_us ets_delay_us
 static inline int gpio_ll_get_level(gpio_dev_t *hw, int gpio_num)

target/private_include/ll_cam.h

@@ -16,6 +16,7 @@
 
 #include <stdint.h>
 #include "sdkconfig.h"
+#include "esp_idf_version.h"
 #if CONFIG_IDF_TARGET_ESP32
 #if ESP_IDF_VERSION_MAJOR >= 4
 #include "esp32/rom/lldesc.h"