ESP32-CAM build with i2c support

[KaiBuesing]

I'm just getting desperate here. Maybe someone of you can help. I am trying to compile a build for an ESP32 cam. What I need is the I2C support and drivers for the BME680 and BH1750. I have modified the "user_config_override.h" accordingly. This is also executed because the wifi data fit. But what is not to find in the settings is i2c SCL/SDA.
Someone has a tip for me ?

[barbudor]

In da docs
https://tasmota.github.io/docs/Compile-your-build/#customize-your-build

[KaiBuesing]

okay, i understand. If i would take tasmota32, which parts must be activated to have full ESP32-cam support ?

[barbudor]

Definitions of FIRMWARE_WEBCAM are here : https://github.com/arendst/Tasmota/blob/a76ebaae48bc7ec573fa277c1c9bed6e810b2607/tasmota/include/tasmota_configurations_ESP32.h#L203C1-L208

But it's a little more complicated as you will also need to add a custom environment in platformio_tasmota_cenv.ini based on the tasmota32-webcam emvironment in order to modify the CPU frequency to 240MHz like here :

Tasmota/platformio_tasmota_env32.ini

Lines 60 to 68 in a76ebaa

	[env:tasmota32-webcam]
	extends = env:tasmota32_base
	board = esp32-fix
	board_build.f_cpu = 240000000L
	build_flags = ${env:tasmota32_base.build_flags}
	-DFIRMWARE_WEBCAM
	-DCAMERA_MODEL_AI_THINKER
	-DOTA_URL='"http://ota.tasmota.com/tasmota32/release/tasmota32-webcam.bin"'
	lib_extra_dirs = lib/lib_ssl, lib/libesp32

Still I don't understand your problem as you can see in my 1st link that I2C is supposed to be already included in tasmota32-webcam
I need to check that

[arendst]

Yes since a week (or so) I2C is included in webcam

[barbudor]

great
thanks Theo

[KaiBuesing]

Thanks for the quick reply Barbudor & Theo :-)

In the dvl branch , support of i2c is now included , great !

But next stupid question from me - how to get support of the BME680 & BH1750 sensors in an easy way ?

By the way, i love this project. Great and fantastic work from all involved !

[barbudor]

Unfortunately as BMP and BH1750 are explicily disabled from tasmota32-webcam (see the #undef in FIRMWARE_WEBCAM above), you are back to square one and have to follow my initial instructions:

Add an evironement in platformio_tasmota_cenv such as:

 [env:tasmota32-kaiwebcam] 
 extends                 = env:tasmota32_base 
 board                   = esp32-fix 
 board_build.f_cpu       = 240000000L 
 build_flags             = ${env:tasmota32_base.build_flags} 
                           -DCAMERA_MODEL_AI_THINKER 
                           -DOTA_URL='"http://ota.tasmota.com/tasmota32/release/tasmota32-kaiwebcam.bin"' 
 lib_extra_dirs          = lib/lib_ssl, lib/libesp32 

(see that I have removed -DFIRMWARE_WEBCAM and name the environment by your first name)

And add those in the user_config_override.h:

#define USE_WEBCAM
#define ENABLE_RTSPSERVER
#define USE_SPI
#define USE_SDCARD
#define USE_I2C
#define USE_BMP
#define USE_BH1750

Then build tasmota32-kaiwebcam and that should be ok

[barbudor]

Just for you to understand
The build workflow includes in that order:

my_user_config.h
user_config_override.h
tasmota_configurations.h or tasmota_configurations_ESP32.h

This is why defines done in user_config_override.h may be undef by variants FIRMWARE_XXX