STM32N657X0-Q write to spi flash using code

[Nixxen]

For a project i want to save log files in the external SPI of the Stm32n6 for this is already tried to configure xspi2 and the external memory, but i am not sure if i have done it right. I also have found no source on how to continue with the Code after this maybe someone can help with this.

[Saket_Om]

Hello @Nixxen 

Please check these examples below as starting point to configure your XSPI in CubeMX.

STM32CubeN6/Projects/NUCLEO-N657X0-Q/Examples/XSPI at main · STMicroelectronics/STM32CubeN6 · GitHub

[TheImmortal]

Sometimes from examples is not easy to understand, and you have test the setup step by step by debugging, there is my working code, you just need to adjust PHY_LINK_1S1S1S by your flash type if you want to use 4 lines, in anyway if you use 1 line data mode then there must work without changes (I also attached files, I do not tested memory map mode), and I see what you do not use CS pin, you plan to switch manually ?

// include in inludes and declare object
#include "stm32_sal_xspi.h"
SAL_XSPI_ObjectTypeDef salXspi;

// test code in main loop
  	XSPI_ResetFlash();
  	XSPI_Init(&salXspi, (XSPI_HandleTypeDef*)&hxspi1);
  	XSPI_MemoryConfig(&salXspi, PARAM_PHY_LINK, PHY_LINK_1S1S1S);
  	HAL_Delay(1);
  	XSPI_EraseSector(&salXspi, 0, 0);
  	uint8 dbuff[256];
        // filling test buffer
  	for (uint8 n = 0; n < 32; n++) dbuff[n] = n + 1;
        // writing 32 bytes at 0x32000 address in flash
  	XSPI_WriteFlashData(&salXspi, 0x32000, dbuff, 32); 
	uint8 rbuff[32];
	XSPI_ReadFlashData(&salXspi, 0x32000, rbuff, 8);
	printf("Fl %u %u %u %u %u %u %u %u\n", rbuff[0], rbuff[1], rbuff[2], rbuff[3], rbuff[4], rbuff[5], rbuff[6], rbuff[7]);