GPIO36,39 as digital input not working

[xenpac]

Hi guys,-)

I have a CSI camera attached and IO36, IO39 is used as input for D0,D1.

I cant get readings of the input.

All others are working (2 15 13 12 14 33 34 35 32)


Do i need to disable ADC or Hall sensor or ?

any clues welcome:-)

here my io init and reading:

Code: [Select all] [Expand/Collapse]

1.     int i;
2.     gpio_config_t conf;
3.  
4.     conf.pin_bit_mask=0;
5.     for (i=0;i<sizeof(pintab)/sizeof(gpio_num_t);i++)
6. //  gpio_set_direction(pintab[i], GPIO_MODE_INPUT); // doesnt work as expected!
7.         conf.pin_bit_mask |= 1ULL<<pintab[i]; // set the pin bits for gpio_config to apply below settings.
8.    
9.     conf.intr_type = GPIO_INTR_DISABLE;
10.     conf.mode = GPIO_MODE_INPUT;
11.     conf.pull_down_en = GPIO_PULLDOWN_DISABLE;
12.     conf.pull_up_en = GPIO_PULLUP_DISABLE;
13.     gpio_config(&conf); // we need to do it with gpio_config, otherwise some pins dont work as expected!!!
14.  
15. .....
16. reading:
17.         if (pin < 32)
18.         {
19.         state = (GPIO_REG_READ(GPIO_IN_REG)  >> pin) & 1U;
20.         }
21.         else
22.         {
23.             pin -= 31;
24.         state = (GPIO_REG_READ(GPIO_IN1_REG)  >> pin) & 1U;
25.         }
26.  

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Thanks

[xenpac]

ooouuups.......

i found it.

reading inputs correct version:

if (pin < 32)
{
state = (GPIO_REG_READ(GPIO_IN_REG) >> pin) & 1U;
}
else
{
pin -= 32;
state = (GPIO_REG_READ(GPIO_IN1_REG) >> pin) & 1U;
}