kopia lustrzana https://github.com/alanesq/esp32cam-demo
now with io expander option
Alan
GitHub
rodzic
dbef14a316
commit
21d1faf337
|
|
@ -13,10 +13,13 @@
|
|||
* GPIO:
|
||||
* You can use io pins 13 and 12 for input or output (but 12 must not be high at boot)
|
||||
* pin 16 is used for psram but you may get away with using it as input for a button etc.
|
||||
* You could also use pins 1 & 3 if you do not use Serial
|
||||
* You could also use pins 1 & 3 if you do not use Serial (disable serialDebug in the settings below)
|
||||
* Pins 14, 2 & 15 should be ok to use if you are not using an SD Card
|
||||
* Other possible pins you could solder directly to the esp32 module? 17, 9, 10, 11, 6, 7, 8
|
||||
* More info: https://randomnerdtutorials.com/esp32-cam-ai-thinker-pinout/
|
||||
*
|
||||
* You can use a MCP23017 io expander chip to give 16 gpio lines by enabling 'useMCP23017' in the setup section and connecting
|
||||
* the i2c pins to 12 and 13 on the esp32cam module. Note: this requires the adafruit MCP23017 library to be installed.
|
||||
*
|
||||
* Created using the Arduino IDE with ESP32 module installed, no additional libraries required
|
||||
* ESP32 support for Arduino IDE: https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json
|
||||
|
|
@ -57,30 +60,32 @@
|
|||
const char* ssid = "<your wifi network name here>";
|
||||
const char* password = "<your wifi password here>";
|
||||
|
||||
const char* stitle = "ESP32Cam-demo-pwm"; // title of this sketch
|
||||
const char* sversion = "10Dec20"; // Sketch version
|
||||
const char* stitle = "ESP32Cam-demo"; // title of this sketch
|
||||
const char* sversion = "12Dec20"; // Sketch version
|
||||
|
||||
const bool serialDebug = 1; // show info. on serial port (1=enabled)
|
||||
const bool serialDebug = 1; // show info. on serial port (1=enabled, disable if using pins 1 and 3 as gpio)
|
||||
|
||||
#define useMCP23017 0 // if MCP23017 IO expander chip is being used (on pins 12 and 13)
|
||||
|
||||
// Camera related
|
||||
const bool flashRequired = 1; // If flash to be used when capturing image (1 = yes)
|
||||
const framesize_t FRAME_SIZE_IMAGE = FRAMESIZE_VGA; // Image resolution:
|
||||
const bool flashRequired = 1; // If flash to be used when capturing image (1 = yes)
|
||||
const framesize_t FRAME_SIZE_IMAGE = FRAMESIZE_VGA; // Image resolution:
|
||||
// default = "const framesize_t FRAME_SIZE_IMAGE = FRAMESIZE_VGA"
|
||||
// 160x120 (QQVGA), 128x160 (QQVGA2), 176x144 (QCIF), 240x176 (HQVGA),
|
||||
// 320x240 (QVGA), 400x296 (CIF), 640x480 (VGA, default), 800x600 (SVGA),
|
||||
// 1024x768 (XGA), 1280x1024 (SXGA), 1600x1200 (UXGA)
|
||||
int cameraImageExposure = 0; // Camera exposure (0 - 1200) If gain and exposure both set to zero then auto adjust is enabled
|
||||
int cameraImageGain = 0; // Image gain (0 - 30)
|
||||
int cameraImageExposure = 0; // Camera exposure (0 - 1200) If gain and exposure both set to zero then auto adjust is enabled
|
||||
int cameraImageGain = 0; // Image gain (0 - 30)
|
||||
|
||||
const int TimeBetweenStatus = 600; // speed of system running ok status light (milliseconds)
|
||||
const int TimeBetweenStatus = 600; // speed of flashing system running ok status light (milliseconds)
|
||||
|
||||
const int indicatorLED = 33; // onboard status LED pin (33)
|
||||
const int indicatorLED = 33; // onboard small LED pin (33)
|
||||
|
||||
const int brightLED = 4; // onboard flash LED pin (4)
|
||||
const int brightLED = 4; // onboard Illumination/flash LED pin (4)
|
||||
|
||||
const int iopinA = 13; // general io pin 13
|
||||
const int iopinB = 12; // general io pin 12 (must not be high at boot)
|
||||
const int iopinC = 16; // input only pin 16 (used by PSRam but you may get away with using it)
|
||||
const int iopinC = 16; // input only pin 16 (used by PSRam but you may get away with using it for a button)
|
||||
|
||||
const int serialSpeed = 115200; // Serial data speed to use
|
||||
|
||||
|
|
@ -99,6 +104,14 @@ WebServer server(80); // serve web pages on port 80
|
|||
#include <FS.h> // gives file access
|
||||
#define SD_CS 5 // sd chip select pin = 5
|
||||
|
||||
// MCP23017 IO expander
|
||||
#if useMCP23017 == 1
|
||||
#include <Wire.h>
|
||||
#include "Adafruit_MCP23017.h"
|
||||
Adafruit_MCP23017 mcp;
|
||||
// Wire.setClock(1700000); // set frequency to 1.7mhz
|
||||
#endif
|
||||
|
||||
// Define global variables:
|
||||
uint32_t lastStatus = millis(); // last time status light changed status (to flash all ok led)
|
||||
uint32_t lastCamera = millis(); // timer for periodic image capture
|
||||
|
|
@ -261,7 +274,18 @@ void setup() {
|
|||
framesize_t FRAME_SIZE_IMAGE = FRAMESIZE_CIF;
|
||||
}
|
||||
|
||||
illuminationSetup(); // configure the PWM for the illumination/flash LED
|
||||
// MCP23017 io expander (requires adafruit MCP23017 library)
|
||||
#if useMCP23017 == 1
|
||||
Wire.begin(12,13); // use pins 12 and 13 for i2c
|
||||
mcp.begin(&Wire); // use default address 0
|
||||
mcp.pinMode(0, OUTPUT); // Define GPA0 (physical pin 21) as output pin
|
||||
mcp.pinMode(8, INPUT); // Define GPB0 (physical pin 1) as input pin
|
||||
mcp.pullUp(8, HIGH); // turn on a 100K pullup internally
|
||||
// change pin state with mcp.digitalWrite(0, HIGH);
|
||||
// read pin state with mcp.digitalRead(8)
|
||||
#endif
|
||||
|
||||
illuminationSetup(); // configure PWM for the illumination/flash LED
|
||||
|
||||
if (serialDebug) Serial.println("\nSetup complete...");
|
||||
|
||||
|
|
@ -355,7 +379,6 @@ bool setupCameraHardware() {
|
|||
}
|
||||
|
||||
|
||||
|
||||
// ******************************************************************************************************************
|
||||
|
||||
|
||||
|
|
@ -433,23 +456,26 @@ bool cameraImageSettings() {
|
|||
// more info: https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/ledc.html
|
||||
|
||||
void illuminationSetup() {
|
||||
|
||||
ledc_timer_config_t timer_conf;
|
||||
timer_conf.duty_resolution = LEDC_TIMER_8_BIT; // 8 bits gives a brightness range of 0 to 255
|
||||
timer_conf.freq_hz = 1000; // frequency of the pwm (timer 3 and 4 are 1000x slowed down?)
|
||||
timer_conf.speed_mode = LEDC_HIGH_SPEED_MODE;
|
||||
timer_conf.timer_num = LEDC_TIMER_3; // which timer to use (0 to 3)
|
||||
ledc_timer_config(&timer_conf);
|
||||
ledc_channel_config_t ledc_conf;
|
||||
ledc_conf.channel = LEDC_CHANNEL_5; // led channel to use (0 to 15)
|
||||
ledc_conf.duty = 0; // 0=off, 255=fully on
|
||||
ledc_conf.gpio_num = brightLED; // gpio pin
|
||||
ledc_conf.intr_type = LEDC_INTR_DISABLE;
|
||||
ledc_conf.speed_mode = LEDC_HIGH_SPEED_MODE;
|
||||
ledc_conf.timer_sel = LEDC_TIMER_3; // timer to use (0 to 3)
|
||||
ledc_channel_config(&ledc_conf);
|
||||
|
||||
illuminationBrightness(0); // set brightness to off
|
||||
// set up the timer
|
||||
ledc_timer_config_t timer_conf;
|
||||
timer_conf.duty_resolution = LEDC_TIMER_8_BIT; // 8 bits gives a brightness range of 0 to 255
|
||||
timer_conf.freq_hz = 1000; // frequency of the pwm
|
||||
timer_conf.speed_mode = LEDC_HIGH_SPEED_MODE;
|
||||
timer_conf.timer_num = LEDC_TIMER_3; // which timer to use (0 to 3)
|
||||
ledc_timer_config(&timer_conf);
|
||||
|
||||
// set up the channel
|
||||
ledc_channel_config_t ledc_conf;
|
||||
ledc_conf.channel = LEDC_CHANNEL_5; // led channel to use (0 to 15)
|
||||
ledc_conf.duty = 0; // 0=off, 255=fully on
|
||||
ledc_conf.gpio_num = brightLED; // gpio pin
|
||||
ledc_conf.intr_type = LEDC_INTR_DISABLE;
|
||||
ledc_conf.speed_mode = LEDC_HIGH_SPEED_MODE;
|
||||
ledc_conf.timer_sel = LEDC_TIMER_3; // timer to use (0 to 3)
|
||||
ledc_channel_config(&ledc_conf);
|
||||
|
||||
illuminationBrightness(0); // set brightness to off
|
||||
|
||||
} // illuminationSetup
|
||||
|
||||
|
|
@ -481,7 +507,6 @@ void flashLED(int reps) {
|
|||
}
|
||||
|
||||
|
||||
|
||||
// critical error - stop sketch and continually flash error code on indicator led
|
||||
void showError(int errorNo) {
|
||||
while(1) {
|
||||
|
|
@ -501,27 +526,22 @@ void showError(int errorNo) {
|
|||
|
||||
byte storeImage() {
|
||||
|
||||
if (sdcardPresent) {
|
||||
if (serialDebug) Serial.printf("Storing image #%d to sd card \n", imageCounter);
|
||||
} else {
|
||||
if (serialDebug) Serial.println("Storing image to SIFFS only");
|
||||
}
|
||||
|
||||
fs::FS &fs = SD_MMC; // sd card file system
|
||||
|
||||
// capture live image from camera
|
||||
int currentBrightness = illuminationLEDstatus;
|
||||
if (flashRequired) illuminationBrightness(255); // turn flash on
|
||||
camera_fb_t *fb = esp_camera_fb_get(); // capture image frame from camera
|
||||
if (flashRequired) illuminationBrightness(currentBrightness); // return flash to previous state
|
||||
if (!fb) {
|
||||
if (serialDebug) Serial.println("Error: Camera capture failed");
|
||||
flashLED(3);
|
||||
// return 0
|
||||
}
|
||||
// capture the image from camera
|
||||
int currentBrightness = illuminationLEDstatus;
|
||||
if (flashRequired) illuminationBrightness(255); // turn flash on
|
||||
camera_fb_t *fb = esp_camera_fb_get(); // capture image frame from camera
|
||||
if (flashRequired) illuminationBrightness(currentBrightness); // return flash to previous state
|
||||
if (!fb) {
|
||||
if (serialDebug) Serial.println("Error: Camera capture failed");
|
||||
flashLED(3); // stop and display error code on LED
|
||||
// return 0
|
||||
}
|
||||
|
||||
// save the image to Spiffs
|
||||
// save image to Spiffs
|
||||
if (!sdcardPresent) {
|
||||
if (serialDebug) Serial.println("Storing image to SIFFS only");
|
||||
SPIFFS.remove(spiffsFilename); // delete old image file if it exists
|
||||
File file = SPIFFS.open(spiffsFilename, FILE_WRITE);
|
||||
if (!file) {
|
||||
|
|
@ -538,7 +558,9 @@ byte storeImage() {
|
|||
}
|
||||
} else {
|
||||
if (serialDebug) Serial.println("Error: writing image to Spiffs...will format and try again");
|
||||
if (!SPIFFS.format()) Serial.println("Error: Unable to format Spiffs");
|
||||
if (!SPIFFS.format()) {
|
||||
if (serialDebug) Serial.println("Error: Unable to format Spiffs");
|
||||
}
|
||||
file = SPIFFS.open(spiffsFilename, FILE_WRITE);
|
||||
if (!file.write(fb->buf, fb->len)) {
|
||||
if (serialDebug) Serial.println("Error: Still unable to write image to Spiffs");
|
||||
|
|
@ -551,11 +573,12 @@ byte storeImage() {
|
|||
|
||||
// save the image to sd card
|
||||
if (sdcardPresent) {
|
||||
if (serialDebug) Serial.printf("Storing image #%d to sd card \n", imageCounter);
|
||||
String SDfilename = "/img/" + String(imageCounter + 1) + ".jpg"; // build the image file name
|
||||
File file = fs.open(SDfilename, FILE_WRITE); // create file on sd card
|
||||
if (!file) {
|
||||
if (serialDebug) Serial.println("Error: Failed to create file on sd-card: " + SDfilename);
|
||||
flashLED(4);
|
||||
flashLED(4); // stop and display error code on LED
|
||||
// return 0
|
||||
} else {
|
||||
if (file.write(fb->buf, fb->len)) { // File created ok so save image to it
|
||||
|
|
@ -563,7 +586,7 @@ byte storeImage() {
|
|||
imageCounter ++; // increment image counter
|
||||
} else {
|
||||
if (serialDebug) Serial.println("Error: failed to save image to sd card");
|
||||
flashLED(4);
|
||||
flashLED(4); // stop and display error code on LED
|
||||
// return 0;
|
||||
}
|
||||
file.close(); // close image file on sd card
|
||||
|
|
@ -723,6 +746,7 @@ void handleRoot() {
|
|||
// ----------------------------------------------------------------
|
||||
// -photo save to sd card/spiffs i.e. http://x.x.x.x/photo
|
||||
// ----------------------------------------------------------------
|
||||
// Capture an image from camera and save to spiffs or sd card
|
||||
|
||||
void handlePhoto() {
|
||||
|
||||
|
|
@ -763,12 +787,13 @@ void handlePhoto() {
|
|||
// ----------------------------------------------------------------
|
||||
// -show images stored on sd card or SPIFFS i.e. http://x.x.x.x/img?img=x
|
||||
// ----------------------------------------------------------------
|
||||
// default image = most recent
|
||||
// Display a previously stored image, default image = most recent
|
||||
// returns 1 if image displayed ok
|
||||
|
||||
bool handleImg() {
|
||||
|
||||
WiFiClient client = server.client(); // open link with client
|
||||
bool pRes = 0;
|
||||
|
||||
// log page request including clients IP address
|
||||
if (serialDebug) {
|
||||
|
|
@ -796,6 +821,7 @@ bool handleImg() {
|
|||
if (timg) {
|
||||
size_t sent = server.streamFile(timg, "image/jpeg"); // send the image
|
||||
timg.close();
|
||||
pRes = 1; // flag sucess
|
||||
} else {
|
||||
if (serialDebug) Serial.println("Error: image file not found");
|
||||
WiFiClient client = server.client(); // open link with client
|
||||
|
|
@ -817,12 +843,13 @@ bool handleImg() {
|
|||
size_t sent = server.streamFile(f, "image/jpeg"); // send file to web page
|
||||
if (!sent) {
|
||||
if (serialDebug) Serial.println("Error sending " + spiffsFilename);
|
||||
} else {
|
||||
pRes = 1; // flag sucess
|
||||
}
|
||||
f.close();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
return pRes;
|
||||
} // handleImg
|
||||
|
||||
|
||||
|
|
@ -1078,9 +1105,6 @@ String requestWebPage(String ip, String page, int port, int maxChars){
|
|||
String wpage = "";
|
||||
// read response in to wpage
|
||||
while (client.available() > 0 && maxChars > 0) {
|
||||
#if defined ESP8266
|
||||
delay(2); // just reads 255s on esp8266 if this delay is not included (not sure about esp32S?)
|
||||
#endif
|
||||
wpage += char(client.read()); // read one character
|
||||
maxChars--;
|
||||
}
|
||||
|
|
@ -1140,6 +1164,28 @@ void handleTest() {
|
|||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
// demo useage of the mcp23017 io chip
|
||||
#if useMCP23017 == 1
|
||||
while(1) {
|
||||
mcp.digitalWrite(0, HIGH);
|
||||
int q = mcp.digitalRead(8);
|
||||
client.print("<p>HIGH, input =" + String(q) + "</p>");
|
||||
delay(1000);
|
||||
mcp.digitalWrite(0, LOW);
|
||||
client.print("<p>LOW</p>");
|
||||
delay(1000);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
// -------------------------------------------------------------------
|
||||
|
||||
|
||||
|
|
|
|||
Ładowanie…
Reference in New Issue