TheArchive/mayhem-firmware
1
0
Fork 0
mirror of https://github.com/portapack-mayhem/mayhem-firmware.git synced 2025-08-22 07:07:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

Use new decimation filters in AIS processor.

Browse Source
This commit is contained in:
Jared Boone
2016-01-01 13:20:02 -08:00
parent 316d5d433b
commit ff05833b02
3 changed files with 32 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
firmware/baseband/proc_ais.cpp
View File

@@ -26,10 +26,24 @@
#include "i2s.hpp"
using namespace lpc43xx;
#include "dsp_fir_taps.hpp"
AISProcessor::AISProcessor() {
decim_0.configure(taps_11k0_decim_0.taps, 33554432);
decim_1.configure(taps_11k0_decim_1.taps, 131072);
}
void AISProcessor::execute(const buffer_c8_t& buffer) {
/* 2.4576MHz, 2048 samples */
auto decimator_out = decimator.execute(buffer);
const buffer_c16_t dst_buffer {
dst.data(),
dst.size()
};
const auto decim_0_out = decim_0.execute(buffer, dst_buffer);
const auto decim_1_out = decim_1.execute(decim_0_out, dst_buffer);
const auto decimator_out = decim_1_out;
/* 76.8kHz, 64 samples */
feed_channel_stats(decimator_out);