44
Rev. 0
APPENDIX B: CAN BASED EVALUATION
• Last fast measurement results before stop of measurement
00:00:00:0030 Rx 1 0x121 s 6 00 00 00 80 0D 00
00:00:00:0025 Rx 1 0x122 s 6 00 00 00 80 0E 00
***END DATE AND TIME 17:4:2018 11:56:19:410***
***[STOP LOGGING SESSION]***
ADDITIONAL OPERATION EXAMPLES
Usage of RAWRW
• Send CFG2949 with flags CH2FAST, AUXFAST, P2ASV, MEAS_I1, MEAS_ENABLE set and MEAS_PERIOD set to 10
00:00:27:6178 Tx 1 0x11F s 8 86 01 73 74 01 80 0A 01
• See Measurement results of Current1 (I1) every second (here: 3LSBs)
00:00:00:9990 Rx 1 0x110 s 3 00 00 03
00:00:00:9989 Rx 1 0x110 s 3 00 00 03
00:00:00:9979 Rx 1 0x110 s 3 00 00 03
• Send FASTRQ at any time to make a fast single shot conversion
00:00:00:6957 Tx 1 0x11D s 0
• See FSSHT as the response
00:00:00:0033 Rx 1 0x11C s 8 00 80 00 00 65 FF 3C 02
• Send CFG2949 with flag MEAS_ENABLE cleared to stop measurement
00:00:00:8610 Tx 1 0x11F s 8 86 01 73 74 01 00 0A 01
• Send RAWRW with COUNTDOWN = 0, WRITE = 0, ADDR = 0, D0 = 16, CAN-Message-Data-Length = 3 to read C1,
E1, TB1 (see LTC2949’s data sheet for LSB values. DC2732A_CAN is configured to use the internal clock)
00:01:58:4164 Tx 1 0x117 s 3 00 00 10
00:00:00:0385 Rx 1 0x117 s 6 04 00 00 00 00 03
00:00:00:0004 Rx 1 0x117 s 8 02 00 F4 0F 00 00 00 00
00:00:00:0004 Rx 1 0x117 s 8 00 00 4F C2 00 01 58 7B
• Send three RAWRW messages to clear C1. E1 and TB1: (for all messages WRITE = 1, ADDR = 0)
MESSAGE
COUNTDOWN
CAN DATA LENGTH
DX SIGNALS
1
2
6
D0 – D1 All Zero
2
1
8
D0 – D5 All Zero
3
0
8
D0 – D5 All Zero
00:02:00:0434 Tx 1 0x117 s 6 84 00 00 00 00 00
00:00:01:8720 Tx 1 0x117 s 8 82 00 00 00 00 00 00 00
00:00:01:5680 Tx 1 0x117 s 8 80 00 00 00 00 00 00 00
00:00:00:0493 Rx 1 0x117 s 4 00 00 10 00
