[GitHub] [incubator-nuttx] jturnsek opened a new pull request #3463: FlexSPI NOR driver

[GitBox]

jturnsek opened a new pull request #3463:
URL: https://github.com/apache/incubator-nuttx/pull/3463


   ## Summary
   
   i.MXRT FlexSPI architecture driver and mtd  driver to control various NOR 
devices. 
   
   ## Impact
   
   ## Testing
   
   Built and tested on MIMXRT1064-EVK board with imxrt_flexspi_nor.c:
   
   #include <nuttx/config.h>
   
   #include <stdbool.h>
   #include <errno.h>
   #include <debug.h>
   
   #include <nuttx/fs/fs.h>
   #include <nuttx/mtd/mtd.h>
   #include <nuttx/spi/flexspi.h>
   
   #include "imxrt_flexspi.h"
   #include "imxrt1064-evk.h"
   
   int imxrt_flexspi_nor_setup(void)
   {
     FAR struct flexspi_dev_s *flexspi_dev ;
     FAR struct mtd_dev_s *mtd_dev;
     int ret = -1;
   
     flexspi_dev = imxrt_flexspi_initialize(0);
     if (!flexspi_dev)
       {
         _err("ERROR: Failed to initialize FlexSPI minor %d: %d\n",
              0, ret);
         return -1;
       }
   
     mtd_dev = flexspi_nor_initialize(flexspi_dev, false);
     if (!mtd_dev)
       {
         _err("ERROR: flexspi_nor_initialize() failed!\n");
         return -1;
       }
   
     ret = register_mtddriver("/dev/nor", mtd_dev, 0755, NULL);
     if (ret < 0)
       {
         syslog(LOG_ERR, "ERROR: Failed to register MTD driver: %d\n",
                ret);
       }
   
     ret = nx_mount("/dev/nor", "/mnt/lfs", "littlefs", 0,
                    "autoformat");
     if (ret < 0)
       {
         syslog(LOG_ERR,
                "ERROR: Failed to mount LittleFS at /mnt/lfs: %d\n",
                ret);
       }
   
     return 0;
   }
   
   


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