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examples: nrf24l01_btle: Fix RX terminator bounds

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nrf24_read() reads up to the nRF24L01 maximum payload length and then appends a NUL terminator for the receive buffer. A full 32-byte payload can therefore write one byte past the local rbuf[32].

Reserve one extra byte for the terminator while keeping the read length capped at NRF24L01_MAX_PAYLOAD_LEN. Dump the number of bytes actually received in the debug path.

Signed-off-by: Old-Ding <ai.neo.ae86@gmail.com>
This commit is contained in:
Old-Ding 2026-07-06 04:01:21 +08:00 • committed by Xiang Xiao
parent 5226be524c
commit 13f04f65b1
1 changed files with 3 additions and 3 deletions
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6
examples/nrf24l01_btle/nrf24l01_btle.c
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@ -484,9 +484,9 @@ int nrf24_read(int wl_fd)
{
int ret;
uint32_t pipeno;
uint8_t rbuf[32];
uint8_t rbuf[NRF24L01_MAX_PAYLOAD_LEN + 1];
ret = read(wl_fd, rbuf, sizeof(rbuf));
ret = read(wl_fd, rbuf, NRF24L01_MAX_PAYLOAD_LEN);
if (ret < 0)
{
perror("Error reading packet\n");
@ -512,7 +512,7 @@ int nrf24_read(int wl_fd)
#ifdef CONFIG_DEBUG_WIRELESS
syslog(LOG_INFO, "Message received : (on pipe %d)\n", pipeno);
nrf24_dumpbuffer("Hex Dump", &rbuf[0], 32);
nrf24_dumpbuffer("Hex Dump", &rbuf[0], ret);
#endif
return 0;
}