Reinitialize SD-card

RE: Reinitialize SD-card

Simonr — Tue, 20 May 2025 13:15:59 GMT

What do you mean with "unregister" the SD card here exactly. You should indeed uninitialize the SD card before reinitializing it to remount an SD card. What's the difference between the successful "remount" and the failing "f_mount" function you describe here?

Best regards,

Simon

RE: Reinitialize SD-card

mosgaard2000 — Mon, 19 May 2025 06:55:31 GMT

Just some follow up questions regarding correct flow.

Should this function be called each time I remount the SD-card and is there a way to unregister it?

void Init_SDcard_HW(void)
{
static diskio_blkdev_t drives[] = {
DISKIO_BLOCKDEV_CONFIG(NRF_BLOCKDEV_BASE_ADDR(m_block_dev_sdc, block_dev), NULL)
};
diskio_blockdev_register(drives, ARRAY_SIZE(drives));
}

and should there be an disk_state = disk_uninitialize(0); call somewhere when disabling the sd-card?

RE: Reinitialize SD-card

mosgaard2000 — Wed, 14 May 2025 08:13:58 GMT

Hi,

I will try to implement some more logging.

In the mean time the remount function returns successfull af both init calls. The problem is that the last f_mount fails.

If I have the memset line active (setting fs to 0) then f_mount just hangs forever. If I remove the memset call then f_mount returns FR_DISK_ERR.

RE: Reinitialize SD-card

Simonr — Wed, 14 May 2025 07:31:48 GMT

In your _remount() function, it doesn't seem like you're checking the status of the SD card before trying to initialize it. Also, you should try adding some logging to debug and see what kind of error messages you're getting returned when trying to remount the board here, as troubleshooting without logs will be only guesswork from our side I'm afraid.

Best regards,

Simon