Hi,
I also came to an unresolved problem noted at : https://e2e.ti.com/support/wireless_connectivity/zigbee_6lowpan_802-15-4_mac/f/158/p/498611/2098396#
on communication between telosb and cc2650 using rime example broadcast from contiki 3.0.
Adding the following line in the project-conf.h
#define NETSTACK_CONF_FRAMER framer_802154
resolves the issue.
my full project-conf.h is as follows for my project:
#define PROJECT_CONF_H_
#define IEEE802154_CONF_PANID 0xABCD
#define RF_CORE_CONF_CHANNEL 26
#define NETSTACK_CONF_RDC_CHANNEL_CHECK_RATE 128
#define NETSTACK_NETWORK rime_driver
#define NETSTACK_CONF_MAC csma_driver
#define NETSTACK_CONF_RDC nullrdc_driver
#define NETSTACK_CONF_FRAMER framer_802154