QSPI seems to still occupy its pins even if it is disabled.

[peter_liu]

I'am working on nrf52840 and base on a sample hci_spi. I use spi1 and tried several different pins, they all works fine.

but when i disable qspi and try to use the pins originally used by qspi, my spi1 failed.

.dts attached, test to use p0.19 as sck-pin.

2677.zephyr.dts

[Simon]

Would you be able to upload a simiplified sample that demonstrates your issue, such that I can investigate it on my side.

Best regards,

Simon

[peter_liu]

i also tried some other samples, they all have the same symptom.

it's just the p0.19 to p0.23 can't be controlled.

I tested on nRF52840-DK board, i'm not sure if it's because of HW configuration.

i simply use a sample in SDK, (ncs\1.6.1\nrf\sample\peripheral_uart) and add some simple GPIO control codes to test, as below:

const struct device *gpio_devs;
gpio_devs = device_get_binding("GPIO_0");
gpio_pin_configure(gpio_devs, 19, GPIO_OUTPUT);
if(xx)
xx=0;
else xx=1;
if (xx)
gpio_pin_set(gpio_devs,19,1);
else
gpio_pin_set(gpio_devs,19,0);

i put test code in the void ble_write_thread() so that when i tap Enter on uart terminal, the gpio level switches. it works on most other GPIOs but p0.19 to p0.23.