cc1352_bootloader_pkt_rx(9)

✨ cc1352_bootloader_pkt_rx(9) ✨

okay so bestie, welcome to the Kernel API Manual 🫶 — this one's all about cc1352_bootloader_pkt_rx, which is literally the function that handles processing a CC1352 Bootloader Packet. iconic behavior, no cap 💅

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💖 NAME 💖

cc1352_bootloader_pkt_rx — process a CC1352 Bootloader Packet 🎀

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🌸 SYNOPSIS 🌸

int cc1352_bootloader_pkt_rx (struct gb_beagleplay *bg , const u8 *data
, size_t count );

like, that's the whole signature, she's compact and she knows it ✨

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🦋 ARGUMENTS 🦋

• bg — the beagleplay greybus driver 🐝 main character energy fr fr
• data — the packet buffer, that's where the bytes live
• count — the packet buffer size, aka how much room we've got 💀

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⭐ RETURN ⭐

the number of bytes processed 👑 (yes that's it, that's the whole return value, slay)

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🔥 DESCRIPTION 🔥

alright so here are the steps to successfully receive a packet from the cc1352 bootloader according to the docs — and bestie, you gotta do them in order, iykyk 🌈

1. Wait for nonzero data to be returned from the device. this is important, like genuinely important 😭 — the device may send zero bytes between a sent and a received data packet. the first nonzero byte you receive is the size of the packet that's being received 📏
2. Read the next byte, which is the checksum for the packet 🧮
3. Read the data bytes from the device. during the data phase, packet size minus 2 bytes is sent 🍓 (yes, minus two, exactly two, no notes)
4. Calculate the checksum of the data bytes and verify it matches the checksum received in the packet ✅ — vibe check on the checksum, basically 💅
5. Send an acknowledge byte or a not-acknowledge byte to the device to indicate the successful or unsuccessful reception of the packet 🫶 ack or nack, choose wisely bestie

fr fr do not skip step 1, the zero-byte thing will get you and it will not be cute 🙈

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👑 SEE ALSO 👑

Kernel file ./drivers/greybus/gb-beagleplay.c, plus all these iconic siblings of hers ✨:

• struct gb_beagleplay(9)
• struct hdlc_payload(9)
• struct hdlc_greybus_frame(9)
• enum cc1352_bootloader_cmd(9)
• enum cc1352_bootloader_status(9)
• struct cc1352_bootloader_packet(9)
• struct cc1352_bootloader_download_cmd_data(9)
• struct cc1352_bootloader_crc32_cmd_data(9)
• hdlc_write(9)
• hdlc_append(9)
• hdlc_encoded_length(9)
• hdlc_tx_frames(9)
• csum8(9)
• gb_message_send(9)
• cc1352_bootloader_empty_pkt(9)

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aaaand that's the whole page bestie, go touch some packets 💜

🎀 sign-off time 🎀 — this little beauty lives in ./drivers/greybus, dated October 2026, and she answers to the name cc1352_bootloader_pkt_rx(9). periodt. 💅✨