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Soft Stack

Obtaining the Soft Device

Get it from here

Soft Device Manual

Flash

The combined flash usage of the SoftDevice and the MBR can be found in the SoftDevice properties section of the release notes. This value corresponds to APP_CODE_BASE in Figure 24: Memory resource map on page 68. The combined flash usage of the SoftDevice and the MBR can also be calculated by adding the MBR flash usage, which is 4 kB 11 , to the SD_FLASH_SIZE defined in nrf_sdm.h.

RAM

  • APP_RAM_BASE = 0x20000000 + SoftDevice RAM consumption
    • In our case this should be 0x20000000 + 0x1628 = 0x20001628

6.1.1 Release Notes

SoftDevice Properties

  • This SoftDevice is production tested for nRF52832.
  • This SoftDevice contains the Master Boot Record (MBR) version 2.4.1 (DRGN-10680).
  • This MBR version is compatible with previous MBR versions.
  • The combined MBR and SoftDevice memory requirements for this version are the same as for the s132_nrf52_6.1.0:
  • Flash: 152 kB (0x26000 bytes).
  • RAM: 5.54 kB (0x1628 bytes). This is the minimum required memory. The actual requirements depend on the configuration chosen at sd_ble_enable() time.
  • The Firmware ID of this SoftDevice is 0x00B7

memory.x

cortex-m-rt docs

MEMORY
{
  FLASH : ORIGIN = 0x26000, LENGTH = 0x5A000
  RAM : ORIGIN = 0x20001628, LENGTH = 0x69D8
}

Flash the softdevice to the nrf52-dk via JLINK

Jame's Munns doc

  • $> cd /path/to/softdevice
  • $> sudo JLinkExe -device NRF52832_XXAA -if SWD -speed 4000 -autoconnect 1
  • J-Link> loadfile s132_nrf52_6.1.1_softdevice.hex