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AT86RF231-ZU Fiches technique(PDF) 58 Page - ATMEL Corporation |
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AT86RF231-ZU Fiches technique(HTML) 58 Page - ATMEL Corporation |
58 / 198 page 58 8111C–MCU Wireless–09/09 AT86RF231 7.2.3.3 Configuration of non IEEE 802.15.4 Compliant Scenarios Sniffer Table 7-9 on page 58 shows an RX_AACK configuration to setup a sniffer device. Other RX_AACK configuration bits, refer to Table 7-5 on page 54, should be set to their reset values. All frames received are indicated by an IRQ_2 (RX_START) and IRQ_3 (TRX_END). After frame reception register bit RX_CRC_VALID (register 0x06, PHY_RSSI) is updated with the result of the FCS check (see Section 8.2 “Frame Check Sequence (FCS)” on page 85). The RX_CRC_VALID bit needs to be checked in order to dismiss corrupted frames. This operating mode is similar to the promiscuous mode. Reception of Reserved Frames In RX_AACK mode, frames with reserved frame types, refer to Section 8.1.2.2 “Frame Control Field (FCF)” on page 80, can also be handled. This might be required when implementing propri- etary, non-standard compliant, protocols. It is an extension of the address filtering in RX_AACK mode. Received frames are either handled similar to data frames, or may be allowed to com- pletely bypass the address filter. Table 7-10 on page 58 shows the required configuration for a node to receive reserved frames, Figure 7-9 on page 53 shows the corresponding flow chart. Table 7-9. Configuration of a Sniffer Device Register Register Register Name Description Address Bits 0x17 1 AACK_PROM_MODE 1: Enable promiscuous Mode 0x2E 4 AACK_DIS_ACK 1: Disable generation of acknowledgment Table 7-10. RX_AACK Configuration to Receive Reserved Frame Types Register Register Register Name Description Address Bits 0x20,0x21 0x22,0x23 0x24, ........... 0x2B SHORT_ADDR_0/1 PAN_ADDR_0/1 IEEE_ADDR_0 ........ IEEE_ADDR_7 Set node addresses 0x0C 7 RX_SAFE_MODE 0: disable frame protection 1: enable frame protection 0x17 4 AACK_UPLD_RES_FT 1: Enable reserved frame type reception 0x17 5 AACK_FLTR_RES_FT Filter reserved frame types like data frame type, see note below 0: disable 1: enable 0x2C 0 SLOTTED_OPERATION 0: if transceiver works in unslotted mode 1: if transceiver works in slotted mode |
Numéro de pièce similaire - AT86RF231-ZU_09 |
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Description similaire - AT86RF231-ZU_09 |
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