IO14 on ESP32 TTGO display not available to read voltage

[Xbiotec]

prog

Input and int test.fcfx

(18.77 KiB) Downloaded 263 times

Seb

[LeighM]

Do you have any attached circuitry?
GPIO35 has an on-board pull-up resistor, GPIO0 does not.
Also, please try with debounce set to 0

[Xbiotec]

hi Ben,
yes there is 100K resistor, this is the reason why input is always to 1 when button is not pushed but didn't explain why input still at 1 when button pushed. (set to active low polarity even with debouce set to 0)

circuitry.jpg (15.25 KiB) Viewed 5427 times

Do you explanation why both are working well with interrupt ?

[LeighM]

Could you try reading the switch input with an Input icon, rather than the Switch component?
Just to eliminate that as a possible issue.
Sorry, I don't have a TTGO to test.

[Xbiotec]

same problem

Input and int test INPUT ICON.fcfx

(17.42 KiB) Downloaded 251 times

Video

With Input Icon.7z

(1.54 MiB) Downloaded 250 times

I have also upload the original firmware to check if button is working well.
Video with original firmware

video original firmware.7z

(1.74 MiB) Downloaded 251 times

[Xbiotec]

For your information
I have just added these lines to ESP32.FCDX to be able to use the INT0 too, if you want to release the new version.
Tested : Working well

Code: Select all

	<interrupt ident='GPIO0' type='pin' name='GPIO0' 
			global='\nvoid MX_ISR_GPIO0(void*);\n'
			handler='\n#ifndef MX_ISR_GPIO0_DEF\n#define MX_ISR_GPIO0_DEF\nvoid MX_ISR_GPIO0(void* arg){FCM_%n();}\n#else\n#warning &quot;This interrupt has previously been enabled, so the macro &lt;%n&gt; may never get called.&quot;\n#endif\n' 
			enable='\ngpio_pad_select_gpio(GPIO_NUM_0);\ngpio_set_direction(GPIO_NUM_0, GPIO_MODE_INPUT);\ngpio_install_isr_service(ESP_INTR_FLAG_LOWMED);\ngpio_isr_handler_add(GPIO_NUM_0, MX_ISR_GPIO0, (void*) GPIO_NUM_0);\ngpio_intr_enable(GPIO_NUM_0);\n'
			disable='\ngpio_intr_disable(GPIO_NUM_0);\n' >
			<options >
                <edge name='Interrupt Edge Select' >
                    <entry name='Rising edge' value='\ngpio_set_intr_type(GPIO_NUM_0, GPIO_INTR_POSEDGE);' />
                    <entry name='Falling edge' value='\ngpio_set_intr_type(GPIO_NUM_0, GPIO_INTR_NEGEDGE);' />
                    <entry name='Rising and Falling edge' value='\ngpio_set_intr_type(GPIO_NUM_0, GPIO_INTR_ANYEDGE);' />
                </edge>
            </options>
        </interrupt>

ESP32 INT GPOI0.jpg (52.64 KiB) Viewed 5410 times

[LeighM]

Hi Seb,

Add this code in a C icon at the start of your program ...

Code: Select all

gpio_set_direction(GPIO_NUM_35, GPIO_MODE_INPUT);

[Xbiotec]

hi LeighM,
I added this at the start of the program on working well.
Why need to add this ?
why can not be set on the the Fcdx ?

thx

[LeighM]

It's a temporary fix.
An update to the CAL will be done when the office reopens in the new year.

[BenR]

Hello,

Sorry this has taken a while but I have now added the missing GPIO0 and GPIO1 interrupts to all ESP devices and also hopefully solved the IO problem you were having without needing the C icon.