west build -p -b pinetime samples/drivers/spi_flash -DCONF=prj.conf
This sample application should unlock the serial nor flash memory. This can be very useful to store e.g. background for the watch.
compilation problematic ….
/root/zephyrproject/zephyr/samples/drivers/spi_flash/src/main.c:17:22: error: ‘DT_INST_0_JEDEC_SPI_NOR_LABEL’ undeclared (first use in this function); did you mean ‘DT_INST_0_NORDIC_NRF_RTC_LABEL’?
Turns out this is some problem with the board definition file.
I found it to be very useful to consult the generated dts file. Here you can check if everything is present.
Guess the dts-file has to be well intended.(structured)
**
TIP: consult the generated dts board file **
vi /root/zephyrproject/zephyr/build/zephyr/include/generated/generated_dts_board.conf
complement the pinetime.dts file with the following (under spi) #define JEDEC_ID_MACRONIX_MX25L64 0xC22017
&spi0 {
compatible = "nordic,nrf-spi";
status = "okay";
sck-pin = <2>;
mosi-pin = <3>;
miso-pin = <4>;
cs-gpios = <&gpio0 27 0>,<&gpio0 5 0>;
st7789v@0 {
compatible = "sitronix,st7789v";
label = "DISPLAY";
spi-max-frequency = <8000000>;
reg = <0>;
cmd-data-gpios = <&gpio0 18 0>;
reset-gpios = <&gpio0 26 0>;
width = <240>;
height = <240>;
x-offset = <0>;
y-offset = <0>;
vcom = <0x19>;
gctrl = <0x35>;
vrhs = <0x12>;
vdvs = <0x20>;
mdac = <0x00>;
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];
};
mx25r64: mx25r6435f@1 {
compatible = "jedec,spi-nor";
reg = <1>;
spi-max-frequency = <1000000>;
label = "MX25R64";
jedec-id = [0b 40 16];
size = <67108864>;
has-be32k;
};
west build -p -b pinetime samples/drivers/spi_flash
- detect ID memory : it is not the macronix one as suggestion on the pinetime website
I found the following : jedec-id = [0b 40 16]; (OK: can execute sample program)
- create working board definition (OK: see above)
http://files.pine64.org/doc/datasheet/pinetime/MX25L6433F,%203V,%2064Mb,%20v1.6.pdf