W25Q_STATE s = W25Q_Init();		 // init the chip
	s = W25Q_EraseSector(0); // erase 4K sector - required before recording

	// make test data
	u8_t byte = 0x6D;
	u8_t byte_read = 0;
	u8_t in_page_shift = 0;
	u8_t page_number = 0;
	// write data
	s= W25Q_ProgramByte(byte, in_page_shift, page_number);
	// read data
	s = W25Q_ReadByte(&byte_read, in_page_shift, page_number);
    s = W25Q_Sleep();
    char str[10];
    sprintf(str, "read: %i", byte_read);
    SHARPMEM_write(&lcd, str, 0, 0, 51, true, false);
    SHARPMEM_refresh_display(&lcd);

    if(!HAL_I2C_IsDeviceReady(&hi2c1, 0x32, 3, 1000)) {
    	SHARPMEM_write(&lcd, "I2C works", 0, 0, 17, true, false);
    	SHARPMEM_refresh_display(&lcd);
    	uint8_t whoami[1] = {0};
    	char whoami_str[10];
    	HAL_StatusTypeDef e = HAL_I2C_Mem_Read(&hi2c1, 0x3C, 0x22, 1, whoami, 1, 1000);
    	if(!e){
			sprintf(whoami_str, "%i", byte_read);
			SHARPMEM_write(&lcd, whoami_str, 0, 0, 34, true, false);
			SHARPMEM_refresh_display(&lcd);
    	} else {
    		sprintf(whoami_str, "err: %x", (uint8_t)e);
    		SHARPMEM_write(&lcd, whoami_str, 0, 0, 34, true, false);
    		SHARPMEM_refresh_display(&lcd);
    	}
    } else {
    	SHARPMEM_write(&lcd, "I2C doesn't work", 0, 0, 17, true, false);
    	SHARPMEM_refresh_display(&lcd);
    }