TODO |
29 | 29 | atrf |
30 | 30 | ==== |
31 | 31 | |
32 | | AT86RF230-based IEEE 802.15.4 transceiver. Two variantes: one to make a USB |
| 32 | AT86RF230-based IEEE 802.15.4 transceiver. Two variants: one to make a USB |
33 | 33 | dongle for use with any Linux host, and one that connects with SPI directly |
34 | 34 | inside a Ben. |
35 | 35 | |
| 36 | Update: following Rikard Lindstrom's revelation that we can use the uSD slot |
| 37 | also just as general GPIOs, the variant that goes inside the Ben can wait a |
| 38 | bit and the atusd board for insertion into the uSD slot is being worked on |
| 39 | first. We can verify most of the design of a fully integrated board with the |
| 40 | atusd board and the latter will be of greater immediate use. |
| 41 | |
| 42 | |
| 43 | Things done |
| 44 | ----------- |
| 45 | |
| 46 | - verify that the Ben can output an a) 16 MHz clock, and b) with +/- 40 ppm |
| 47 | |
| 48 | Done, see ecn/ecn0005.txt. Works fine. |
| 49 | |
| 50 | - replace discrete balun and filter with integrated solution, to reduce BOM |
| 51 | size, maybe cost, insertion loss, and PCB space (see ATRF/ECN0003) |
| 52 | |
| 53 | Done for atusd. At a first glamce, does not seem to affect performance. |
| 54 | |
| 55 | - check if we really need three DC blocking caps in the RF path |
| 56 | |
| 57 | Reduced to two in atusd without apparent ill effects. |
| 58 | |
36 | 59 | |
37 | 60 | Things not done yet |
38 | 61 | ------------------- |
... | ... | |
50 | 73 | will already tell most of the story) with calibrated antenna for FCC/ETSI |
51 | 74 | compliance assessment. Vary transmit power. |
52 | 75 | |
53 | | - use IEEE 802.15.4 stack from linux-zigbee |
54 | | |
55 | | - verify that the Ben can output an a) 16 MHz clock, and b) with +/- 40 ppm |
56 | | |
57 | | - replace discrete balun and filter with integrated solution, to reduce BOM |
58 | | size, maybe cost, insertion loss, and PCB space (see ATRF/ECN0003) |
59 | | |
60 | | - check if we really need three DC blocking caps in the RF path |
| 76 | - use IEEE 802.15.4 stack from linux-zigbee. The linux-zigbee kernel is |
| 77 | currently at 2.6.35. Once 2.6.36 is released, we should have Ben and |
| 78 | IEEE 802.15.4 support in the same kernel without further ado. |
61 | 79 | |
62 | 80 | - change layout of transceiver side of the board for placement inside Ben |
63 | 81 | |
... | ... | |
71 | 89 | |
72 | 90 | - implement sleep mode |
73 | 91 | |
| 92 | - (atusd) verify SPI signal timing, particularly the data clock |
| 93 | |
74 | 94 | |
75 | 95 | Bugs to fix |
76 | 96 | ----------- |
77 | 97 | |
78 | | - atrf vs. atspi naming is a bit confusing |
| 98 | - atrf vs. atspi naming is a bit confusing. Rename atrf hardware to atusb, |
| 99 | and maybe the tools from atspi to atrf ? |
79 | 100 | |
80 | 101 | |
81 | 102 | ccrf |
... | ... | |
83 | 104 | |
84 | 105 | Board similar to the atrf, but with the TI/Chipcon CC2520. |
85 | 106 | |
| 107 | Cancelled. The CC2520 falls under US export restrictions, apparently because |
| 108 | it contains an AES engine. |
| 109 | |
86 | 110 | |
87 | 111 | cntr |
88 | 112 | ==== |