ChangeLog for Version 3.6.2¶

Build system changes¶

• Added support for setting SYSCONFDIR

Top-level component changes¶

• A new top-level component, gr-filter, has been created. This component implements all the filter-related functionality that is in gnuradio-core, and uses the new style 3.7 API. The filter blocks in gnuradio-core are now deprecated; but will remain in gnuradio-core until the 3.7 release. Developers are encouraged to begin using the new blocks in preparation.

New signal processing blocks¶

• gr_and_const_bb: adds bb type to gr_and_const* block
• gr_annotator_raw: allows tagging stream with pmt key, value pair from outside GNU Radio
• gr_endian_swap: change item endianess through block
• gr_message_burst_source: turn received messages into a stream and tag them
• gr_tag_debug: debug display of all tags going through block`
• digital_gfsk_demod, digital_gfsk_mod: Gaussian Frequency Shift Keying modulator and demodulator

New feature additions¶

• Support has now been added for ARM processors that do not implement NEON.
• gr-uhd has added rx tagging for changes in sample rate and center frequency.
• Added support for serializing pmt tuples
• Added BER/SNR simulation example
• Removed gruel dependency on inet.h

Bug fixes¶

• core: fix minor bug in gri_wavefile endian swapping
• core: only check for *.conf in preferences directory
• digital: fixed incorrect variable name in qam_demod XML
• digital: fix FLL block to use fir_filter
• digital: remove unused parameter from DPSK demod GRC block
• digital: fix use of Gray code in digital mod/demod GRC files
• fcd: fix copy and paste error in documentation
• uhd: fix stopping flowgraph while streaming
• volk: don't initialize zero phase in rotator kernel
• volk: don't use ORC for volk_16u_byteswap_u kernel
• volk: add missing AVX support in volk_32f_x2_dot_prod_32f kernels
• volk: fix __m128 cast in volk_32fc_x2_dot_prod_32fc_a kernel
• volk: fix volk_32f_x2_dot_prod_32f_u_sse tail case
• volk: use loadu for unaligned volk_32f_x2_dot_prod_32f_u_sse*
• volk: fix for win64 MSVC not having MMX support
• volk: special werror unused cmd line arg for clang

Contributors¶

• Ben Reynwar
• Chí-Thanh Christopher Nguyễn
• Hendrik van Wyk
• Jaroslav Skarvada
• Johnathan Corgan
• Josh Blum
• Martin Braun
• Nicholas Corgan
• Nick Foster
• Tim O'Shea
• Tom Rondeau
• Wayne Roberts