/ {
chosen{
zephyr,display=&gc9a01;
};
};
&pinctrl {
spi00_default: spi00_default {
group1 {
psels = <NRF_PSEL(SPIM_SCK, 2, 6)>,
<NRF_PSEL(SPIM_MOSI, 2, 8)>,
<NRF_PSEL(SPIM_MISO, 2, 9)>;
};
};
spi00_sleep: spi00_sleep {
group1 {
psels = <NRF_PSEL(SPIM_SCK, 2, 6)>,
<NRF_PSEL(SPIM_MOSI, 2, 8)>,
<NRF_PSEL(SPIM_MISO, 2, 9)>;
low-power-enable;
};
};
};
/delete-node/ &mx25r64;
&spi00 {
status = "okay";
cs-gpios = <&gpio2 10 GPIO_ACTIVE_LOW>;
pinctrl-0 = <&spi00_default>;
pinctrl-1 = <&spi00_sleep>;
pinctrl-names = "default", "sleep";
gc9a01: gc9a01@0 {
compatible = "galaxycore,gc9a01";
label = "GC9A01";
spi-max-frequency = <10000000>;
reg = <0>;
cmd-data-gpios = <&gpio2 7 GPIO_ACTIVE_LOW>;
reset-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
width = <240>;
height = <240>;
x-offset = <0>;
y-offset = <0>;
vcom = <0x19>;
gctrl = <0x35>;
vrhs = <0x12>;
vdvs = <0x20>;
mdac = <0x08>;
gamma = <0x01>;
colmod = <0x05>;
lcm = <0x2c>;
porch-param = [0c 0c 00 33 33];
cmd2en-param = [5a 69 02 01];
pwctrl1-param = [a4 a1];
pvgam-param = [D0 04 0D 11 13 2B 3F 54 4C 18 0D 0B 1F 23];
nvgam-param = [D0 04 0C 11 13 2C 3F 44 51 2F 1F 1F 20 23];
ram-param = [00 F0];
rgb-param = [CD 08 14];
};
};
SDK: nRF Connect SDK v3.0.2
The green line is SCK, yellow is CS.
Why is the voltage of the SCK so low? And the signal is not a square wave.