We are using the external flash w25q32jv via SPIM connection. the configuration as below.
arduino_spi: &spi3 {
status = "okay";
compatible = "nordic,nrf-spim";
cs-gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;
pinctrl-0 = <&spi3_default>;
pinctrl-1 = <&spi3_sleep>;
pinctrl-names = "default", "sleep";
w25q32jv: w25q32jv@0 {
compatible = "jedec,spi-nor";
reg = < 0 >;
spi-max-frequency = < 8000000 >;
size = < 0x2000000 >;
has-dpd;
t-enter-dpd = < 3000 >;
t-exit-dpd = < 30000 >;
jedec-id = [ ef 40 16 ];
};
};
When performing write/read with only configuration SPI nor flash, it passed. But when integrating into the system with USB_CDC_ACM, PDMIC, zephyr threads. It's very easy to fail write/read flash and mcuboot from external flash. We investigate that the f/w sending the wrong op-code for reading/writing. If we use irq_lock/unlock before flash_area_write(), flash_area_read() in zephyr library. The flash operation is successful and DFU with mcumgr will pass.
But this solution needs to modify the zephyr library (flash_map.c), not easy to commit and apply to our firmware. What should be appropriate solution in this case?
But this solution needs to modify the zephyr library (flash_map.c), not easy to commit and apply to our firmware. What should be appropriate solution in this case?
