warning >>>>------>> TOUCH_CS pin not defined in TFT_eSPI-2.4.50

[stef-ladefense]

Hello,
I like warnings, it often avoids problems.
on the other hand, this is only valid if the screen actually has a touch .
otherwise, the warning appears for any screen without touch.

it would be wise to include in the xxxx_defines.h file screens without touch for example
#define NOTOUCH

and in the TFT_eSPI.h on line 875

#elif!defined(NO_TOUCH)
#warning >>>>------>> TOUCH_CS pin not defined, TFT_eSPI touch functions will not be available!
#endif

moreover, nothing prevents including a #define NOTOUCH manually in the User_Setup.h file in the case of non-use of the touch function of a screen which would be equipped with it.

What do you think ?

Regards,
Stéphane

[pentatonico]

Yes please!

[homonto]

I came here just to say: I DON'T LIKE THIS WARNING ;-)
I like my compilation to be CLEAN and without the warnings where I don't expect them
just saying ;-)

reason being: my display ST7789 240x240 is not touch screen at all and CS pin is not in use - so I would not expect compilation warning in such case
and if I am not mistaken: CS pin is only in use if you have to use more than 1 SPI device so that the devices will know which one is being addressed, right? Nothing really to do with the "touch functions"

[Bodmer]

Added capability to stop alerts.

// Define in setup to disable all #warnings in library (can be put in User_Setup_Select.h)
#define DISABLE_ALL_LIBRARY_WARNINGS

[chriskuku]

Allow me to chime in here: my CYD device (cyd2usb) has capacitive touch and I'm wondering why I get this warning and the message that touch functions will not be available.

In file included from .pio/libdeps/cyd/TFT_eSPI/TFT_eSPI.cpp:16: .pio/libdeps/cyd/TFT_eSPI/TFT_eSPI.h:973:8: warning: #warning >>>>------>> TOUCH_CS pin not defined, TFT_eSPI touch functions will not be available! [-Wcpp] #warning >>>>------>> TOUCH_CS pin not defined, TFT_eSPI touch functions will not be available! ^~~~~~~

platform.ini:

[platformio]
src_dir = .
default_envs = cyd2usb

[env]
platform = espressif32
board = esp32dev
framework = arduino
lib_deps = 
	bodmer/TFT_eSPI@^2.5.33
monitor_speed = 115200
monitor_filters = esp32_exception_decoder
# upload_speed = 921600
upload_speed = 460800
board_build.partitions=min_spiffs.csv
build_flags =
	-DUSER_SETUP_LOADED
	-DILI9341_2_DRIVER
	-DUSE_HSPI_PORT
	-DTFT_WIDTH=240
	-DTFT_HEIGHT=320
	-DTFT_MISO=12
	-DTFT_MOSI=13
	-DTFT_SCLK=14
	-DTFT_CS=15
	-DTFT_DC=2
	-DTFT_RST=-1
	-DTFT_BL=21
	-DTFT_BACKLIGHT_ON=HIGH
	-DTFT_BACKLIGHT_OFF=LOW
	-DLOAD_GLCD
	-DSPI_FREQUENCY=55000000
	-DSPI_READ_FREQUENCY=20000000
	-DSPI_TOUCH_FREQUENCY=2500000
	-DLOAD_FONT2
	-DLOAD_FONT4
	-DLOAD_FONT6
	-DLOAD_FONT7
	-DLOAD_FONT8
	-DLOAD_GFXFF

[env:cyd]
build_flags =
	${env.build_flags}
	-DTFT_INVERSION_OFF

[env:cyd2usb]
build_flags =
	${env.build_flags}
	-DTFT_INVERSION_ON

[zRCrackiiN]

Allow me to chime in here: my CYD device (cyd2usb) has capacitive touch and I'm wondering why I get this warning and the message that touch functions will not be available.

In file included from .pio/libdeps/cyd/TFT_eSPI/TFT_eSPI.cpp:16: .pio/libdeps/cyd/TFT_eSPI/TFT_eSPI.h:973:8: warning: #warning >>>>------>> TOUCH_CS pin not defined, TFT_eSPI touch functions will not be available! [-Wcpp] #warning >>>>------>> TOUCH_CS pin not defined, TFT_eSPI touch functions will not be available! ^~~~~~~

platform.ini:

[platformio]
src_dir = .
default_envs = cyd2usb

[env]
platform = espressif32
board = esp32dev
framework = arduino
lib_deps = 
	bodmer/TFT_eSPI@^2.5.33
monitor_speed = 115200
monitor_filters = esp32_exception_decoder
# upload_speed = 921600
upload_speed = 460800
board_build.partitions=min_spiffs.csv
build_flags =
	-DUSER_SETUP_LOADED
	-DILI9341_2_DRIVER
	-DUSE_HSPI_PORT
	-DTFT_WIDTH=240
	-DTFT_HEIGHT=320
	-DTFT_MISO=12
	-DTFT_MOSI=13
	-DTFT_SCLK=14
	-DTFT_CS=15
	-DTFT_DC=2
	-DTFT_RST=-1
	-DTFT_BL=21
	-DTFT_BACKLIGHT_ON=HIGH
	-DTFT_BACKLIGHT_OFF=LOW
	-DLOAD_GLCD
	-DSPI_FREQUENCY=55000000
	-DSPI_READ_FREQUENCY=20000000
	-DSPI_TOUCH_FREQUENCY=2500000
	-DLOAD_FONT2
	-DLOAD_FONT4
	-DLOAD_FONT6
	-DLOAD_FONT7
	-DLOAD_FONT8
	-DLOAD_GFXFF

[env:cyd]
build_flags =
	${env.build_flags}
	-DTFT_INVERSION_OFF

[env:cyd2usb]
build_flags =
	${env.build_flags}
	-DTFT_INVERSION_ON

samesies! its weird! ive defined the touch_cs pin in user_setup.h so im confused...

[morfeus2]

I would also be in favor of a #define NOTOUCH, because I am not able to find a clean solution.
I have a screen without touch and if I use:
#define TOUCH_CS -1
I get:
#error Touch screen not supported in parallel or SPI PIO mode, use a separate library.
If I don't define TOUCH_CS, I get the warning.
I would avoid "DISABLE_ALL_LIBRARY_WARNINGS" because I want to be able to see other possible warnings.
Up to now I did not find a way to choose to disable touch at all.