bug: ISR uses sizeof(tx_buf) instead of PACKET_LEN for half-bit count

time commented

2026-08-02 05:25:20 +00:00

Contributor

tx_isr checks tx_bit_idx < sizeof(tx_buf) * 16, but sizeof(tx_buf) returns byte size (30), giving 480 iterations instead of the intended 240 (PACKET_LEN × 16). This reads out-of-bounds past tx_buf into tx_bit_idx and tx_done memory, corrupting output. Fix: use PACKET_LEN * 16.

time referenced this issue

2026-08-03 03:59:44 +00:00

feat: TX/RX working — first successful reception via rtl_433 #39

time commented

2026-08-03 04:00:15 +00:00

Author

Contributor

Fixed in PR #39: ISR was completely rewritten — no longer uses sizeof(tx_buf). Main loop iterates PACKET_LEN * 2 over the 8-bit buffer.

time closed this issue

2026-08-03 04:06:57 +00:00

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bug: ISR uses sizeof(tx_buf) instead of PACKET_LEN for half-bit count #31