initial support for the old ESP32 Camera TTGO T-Journal without PSRAM

examples/tjournal-espnow-sender/tjournal-espnow-sender.cpp

@@ -0,0 +1,46 @@
+/**************************************************
+ * ESPNowCam video Transmitter
+ * by @hpsaturn Copyright (C) 2024
+ * This file is part ESP32S3 camera tests project:
+ * https://github.com/hpsaturn/esp32s3-cam
+**************************************************/
+
+#include <Arduino.h>
+#include <ESPNowCam.h>
+#include <drivers/CamTJournal.h>
+#include <Utils.h>
+
+CamTJournal Camera;
+ESPNowCam radio;
+
+void processFrame() {
+  if (Camera.get()) {
+    radio.sendData(Camera.fb->buf, Camera.fb->len);
+    delay(25); // ==> weird delay for this camera. 
+    printFPS("CAM:");
+    Camera.free();
+  }
+}
+
+void setup() {
+  Serial.begin(115200);
+
+  delay(5000); // only for debugging 
+
+  if(psramFound()){
+    size_t psram_size = esp_spiram_get_size() / 1048576;
+    Serial.printf("PSRAM size: %dMb\r\n", psram_size);
+  }
+
+  radio.init();
+  if (!Camera.begin()) {
+    Serial.println("Camera Init Fail");
+    delay(1000);
+    ESP.restart();
+  }
+  delay(500);
+}
+
+void loop() {
+  processFrame();
+}

platformio.ini

@@ -49,6 +49,14 @@ lib_deps =
   https://github.com/hpsaturn/SerialTerminal.git
   hpsaturn/ESP32 Wifi CLI @^0.2.1
 
+[env:tjournal-espnow-sender]
+platform = espressif32 @ 4.4.0
+extends = env
+board = esp32dev
+build_src_filter = -<*> -<*common*> +<tjournal-espnow-sender/>
+build_flags =
+  -D CORE_DEBUG_LEVEL=0
+
 [m5cores3_common]
 extends = esp32common
 lib_deps = 

src/drivers/CamTJournal.cpp

@@ -0,0 +1,55 @@
+#include "CamTJournal.h"
+
+static camera_config_t camera_config = {
+    .pin_reset = 15,
+    .pin_xclk = 27,
+    .pin_sscb_sda = 25,
+    .pin_sscb_scl = 23,
+    .pin_d7 = 19,
+    .pin_d6 = 36,
+    .pin_d5 = 18,
+    .pin_d4 = 39,
+    .pin_d3 = 5,
+    .pin_d2 = 34,
+    .pin_d1 = 35,
+    .pin_d0 = 17,
+    .pin_vsync = 22,
+    .pin_href = 26,
+    .pin_pclk = 21,
+
+    .xclk_freq_hz = 20000000,
+    .ledc_timer   = LEDC_TIMER_0,
+    .ledc_channel = LEDC_CHANNEL_0,
+
+    .pixel_format  = PIXFORMAT_JPEG,
+    .frame_size    = FRAMESIZE_QVGA,
+    .jpeg_quality  = 12,
+    .fb_count      = 1,
+    .fb_location   = CAMERA_FB_IN_DRAM,
+    .grab_mode     = CAMERA_GRAB_WHEN_EMPTY,
+};
+
+bool CamTJournal::begin() {
+  esp_err_t err = esp_camera_init(&camera_config);
+  if (err != ESP_OK) {
+    return false;
+  }
+  sensor = esp_camera_sensor_get();
+  return true;
+}
+
+bool CamTJournal::get() {
+  fb = esp_camera_fb_get();
+  if (!fb) {
+    return false;
+  }
+  return true;
+}
+
+bool CamTJournal::free() {
+  if (fb) {
+    esp_camera_fb_return(fb);
+    return true;
+  }
+  return false;
+}

src/drivers/CamTJournal.h

@@ -0,0 +1,17 @@
+#ifndef CAMTJOURNAL_H
+#define CAMTJOURNAL_H
+
+#include "esp_camera.h"
+
+class CamTJournal {
+   private:
+   public:
+    camera_fb_t* fb;
+    sensor_t* sensor;
+    camera_config_t* config;
+    bool begin();
+    bool get();
+    bool free();
+};
+
+#endif