For a customer I am developing a Zigbee coordinator / Gateway with the nRF52840. As hardware I am using the nRF52840 Development Kit v2.0.1. As Software basis I use the “Zigbee cli example - Project” from the Thread and Zigbee SDK v4.0.0.
So far a lot of basic requests like “LQI” and “active endpoint” requests are working. But when I try to read out the Attributes of an endpoint I only get unexpected results as response.
As there are is no example for that in the cli Project, I only used the API Reference. I was able to send the request with my function “discover_attr_send(…)”. The function is called as callback after executing the api function “zb_buf_get_out_delayed_ext(…)”
static zb_void_t discover_attr_send(zb_bufid_t bufid, zb_uint16_t cb_param)
{
zb_uint8_t row = cb_param;
discover_attr_req_t * p_row = &(m_disc_attr_table[row]);
p_row->seq_num = ZCL_CTX().seq_number;
ZB_ZCL_GENERAL_DISC_READ_ATTR_REQ(bufid,
ZB_ZCL_ENABLE_DEFAULT_RESPONSE,
p_row->u16StartAttrID,
p_row->u8MaxLen,
p_row->u16TargetAddress,
p_row->u8AddrMode,
p_row->u8RemoteEP,
zb_get_cli_endpoint(),
ZB_AF_HA_PROFILE_ID,
p_row->u16ClusterID,
cmd_zb_zcl_getDiscReadAtte_req_cb);
}
For example I want to read out the attributes of the On/Off Cluster (0x0006), endpoint 3 from the node with the short address “0x8dda”. So the parameters when sending the request look like this:
u16StartAttrID : 0
u8MaxLen : 11
u16TargetAddress : 0x8dda
u8AddrMode : 2
u8RemoteEP : 3
u16ClusterID : 6
As expected, after some time the callback function “cmd_zb_zcl_getDiscReadAtte_req_cb(…)” is called:
static zb_void_t cmd_zb_zcl_getDiscReadAtte_req_cb(zb_bufid_t bufid)
{
zb_uint8_t complete = ZB_ZCL_DISC_NON_COMPLETE;
zb_zcl_disc_attr_info_t *disc_attr_info;
ZB_ZCL_GENERAL_GET_COMPLETE_DISC_RES(bufid, complete);
ZB_ZCL_GENERAL_GET_NEXT_DISC_ATTR_RES(bufid, disc_attr_info);
if (ZB_ZCL_DISC_COMPLETE == complete)
{
printf("Disc Attribute complete:\n ID: 0x%X\n Type: 0x%X\n", disc_attr_info->attr_id, disc_attr_info->data_type)
}
else
{
printf("Disc Attribute incomplete:\n ID: 0x%X\n Type: 0x%X\n", disc_attr_info->attr_id, disc_attr_info->data_type);
}
zb_buf_free(bufid);
}
As result I always get an answers like this:
- Time:
Disc Attribute incomplete:
ID: 0xC00
Type: 0x0
- Time:
Disc Attribute incomplete:
ID: 0xC01
Type: 0x0
- Time:
Disc Attribute incomplete:
ID: 0xC02
Type: 0x0
That was not something I was expecting to receive as Answer, as the IDs don’t match with attributes of the On/Off Cluster. Can you tell me what I am doing wrong? Do you have example code of how to read out the attributes of a cluster?
Best Regards
Lutz
