problem with nrf52832 gpio

[toddyu]

Hi,I'm using nrf52832. I configured P0.20 as GPIO output,P0.22 as GPIO input.These two pins are connected wiht a 10Kohm resistor.I measured the voltage level on P0.22 is about 2V.

Why?The chip is broken?I have dozens of nrf52832 have the same problem.

[Turbo J]

Show us code. Note that you can pullup resistors on GPIO inputs that are only a bit larger than 10k per datasheet.

That could explain your 2V resulting voltage on the pin.

.

[toddyu]

#define J11_IN 22
#define J11_OUT 20
int main(void)
{
bool erase_bonds;

log_init();
NRF_LOG_INFO("TX_TANZHUAN %s started %s %s.", APP_VERSION, __DATE__, __TIME__);

timers_init();
leds_init(&erase_bonds);
gpiote_init();
record_init();
set_sensor_id(Readid());
NRF_LOG_INFO("id:%s", get_sensor_id());
nrf_gpio_cfg(
J11_OUT,
NRF_GPIO_PIN_DIR_OUTPUT,
NRF_GPIO_PIN_INPUT_DISCONNECT,
NRF_GPIO_PIN_PULLUP,
NRF_GPIO_PIN_S0H1,
NRF_GPIO_PIN_NOSENSE);

nrf_gpio_cfg_output(J9_OUT);
nrf_gpio_pin_set(J11_OUT);
nrf_gpio_pin_set(J9_OUT);
nrf_gpio_cfg_input(J9_IN,NRF_GPIO_PIN_NOPULL);
// nrf_gpio_cfg_input(J10_IN,NRF_GPIO_PIN_NOPULL);
nrf_gpio_cfg(
J11_IN,
NRF_GPIO_PIN_DIR_INPUT,
NRF_GPIO_PIN_INPUT_CONNECT,
NRF_GPIO_PIN_NOPULL,
NRF_GPIO_PIN_S0S1,
NRF_GPIO_PIN_NOSENSE);

NRF_LOG_INFO("num8 %d",nrf_gpio_pin_read(J8_IN));
NRF_LOG_INFO("num9 %d",nrf_gpio_pin_read(J9_IN));
NRF_LOG_INFO("num10 %d",nrf_gpio_pin_read(J10_IN));
NRF_LOG_INFO("num11 %d",nrf_gpio_pin_read(J11_IN));
NRF_LOG_INFO("num6 %d",nrf_gpio_pin_read(J6_IN));
while(1);