Add security to service Characteristic

[Renix]

In the BLE Characteristics, a beginner's tutorial

Martin mentions: Since this is a beginners tutorial we will keep it simple and leave the doors wide open. No security, encryption, or passkey needed.

Is there an example to add security? I have a server, no IO, so it has to be Just Works bonding. I tried using BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM() as suggested, but then the advertising stops

I use SDK13, so perhaps there is something else I need to do.

Any help appreciated

[Renix]

Bjørn

code execution does not reach app_error_handler.

With both char_md.char_props.read = 1; and char_md.char_props.write = 1;

// OUR_JOB: Step 3.A, Configuring Client Characteristic Configuration Descriptor metadata and add to char_md structure ble_gatts_attr_md_t cccd_md; memset(&cccd_md, 0, sizeof(cccd_md)); //GvR BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&cccd_md.read_perm); BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&cccd_md.write_perm);

//BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.read_perm);
//BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.write_perm);
cccd_md.vloc                = BLE_GATTS_VLOC_STACK;    
char_md.p_cccd_md           = &cccd_md;
char_md.char_props.notify   = 1;

I see the following on the UART output:

:ERROR:Fatal
SDH:WARNING:RAM start should be adjusted to 0x20001ff0.
SDH:WARNING:RAM size should be adjusted to 0xe010.

In IAR I have

define symbol __ICFEDIT_intvec_start__ = 0x1f000;
/*-Memory Regions-*/
define symbol __ICFEDIT_region_ROM_start__ = 0x1f000;
define symbol __ICFEDIT_region_ROM_end__   = 0x7ffff;
define symbol __ICFEDIT_region_RAM_start__ = 0x20002fff;
define symbol __ICFEDIT_region_RAM_end__   = 0x2000ffff;
export symbol __ICFEDIT_region_RAM_start__;
export symbol __ICFEDIT_region_RAM_end__;
/*-Sizes-*/
define symbol __ICFEDIT_size_cstack__ = 0x800;
define symbol __ICFEDIT_size_heap__   = 0x200;
/**** End of ICF editor section. ###ICF###*/

I guess there is no point in trying to use BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM() if I am not using //char_md.char_props.read = 1; or //char_md.char_props.write = 1;

Since it is the CCCD Notify property being displayed, I assume the MITH bonding is only for the read and write.