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cc2420 and cc2430: add comment on why we discard tbiv
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@@ -217,6 +217,7 @@ flushrx(void)
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uint8_t dummy;
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CC2520_READ_FIFO_BYTE(dummy);
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/* read and discard dummy to avoid "variable set but not used" warning */
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(void)dummy;
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CC2520_STROBE(CC2520_INS_SFLUSHRX);
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CC2520_STROBE(CC2520_INS_SFLUSHRX);
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