C++ (Cpp) dll_assemble_packet_header Examples

Example #1

File: packet.c Project: matthiasds/dash7-ap-open-source-stack

void packet_assemble(packet_t* packet)
{
    uint8_t* data_ptr = packet->hw_radio_packet.data + 1; // skip length field for now, we fill this later

    data_ptr += dll_assemble_packet_header(packet, data_ptr);

    data_ptr += d7anp_assemble_packet_header(packet, data_ptr);

    data_ptr += d7atp_assemble_packet_header(packet, data_ptr);

    // add payload
    memcpy(data_ptr, packet->payload, packet->payload_length); data_ptr += packet->payload_length;
    packet->hw_radio_packet.length = data_ptr - packet->hw_radio_packet.data - 1 + 2; // exclude the length byte and add CRC bytes
    packet->hw_radio_packet.data[0] = packet->hw_radio_packet.length;

    // TODO network protocol footer

    // add CRC - SW CRC when using FEC
    if (!has_hardware_crc || packet->hw_radio_packet.tx_meta.tx_cfg.channel_id.channel_header.ch_coding == PHY_CODING_FEC_PN9)
    {
    	DPRINT_DATA_DLL(packet->hw_radio_packet.data, packet->hw_radio_packet.length + 1); // TODO tmp
    	uint16_t crc = __builtin_bswap16(crc_calculate(packet->hw_radio_packet.data, packet->hw_radio_packet.length + 1 - 2));
    	memcpy(data_ptr, &crc, 2);
    	DPRINT_DATA_DLL(packet->hw_radio_packet.data, packet->hw_radio_packet.length + 1); // TODO tmp
    }

}

Example #2

File: packet.c Project: jarryd/dash7-ap-open-source-stack

void packet_assemble(packet_t* packet)
{
    uint8_t* data_ptr = packet->hw_radio_packet.data + 1; // skip length field for now, we fill this later

    data_ptr += dll_assemble_packet_header(packet, data_ptr);

    data_ptr += d7anp_assemble_packet_header(packet, data_ptr);

    data_ptr += d7atp_assemble_packet_header(packet, data_ptr);

    // add payload
    memcpy(data_ptr, packet->payload, packet->payload_length); data_ptr += packet->payload_length;
    packet->hw_radio_packet.length = data_ptr - packet->hw_radio_packet.data - 1 + 2; // exclude the length byte and add CRC bytes

    // TODO network protocol footer

    // add CRC
    uint16_t crc = __builtin_bswap16(crc_calculate(packet->hw_radio_packet.data, packet->hw_radio_packet.length - 2));
    memcpy(data_ptr, &crc, 2);
}