Superminaren/MMDVM
1
0
Fork 0
mirror of https://github.com/g4klx/MMDVM.git synced 2026-10-24 11:25:01 +02:00
Code Issues Packages Projects Releases Wiki Activity

Add the twist processing to the AX25 RX.

Browse Source
This commit is contained in:
Jonathan Naylor
2020-06-21 21:40:40 +01:00
parent f9fcdc5292
commit e210062365
5 changed files with 373 additions and 260 deletions
Download Patch File Download Diff File Expand all files Collapse all files
AX25Demodulator.h
+5 -3
View File
@@ -22,6 +22,7 @@
#include "Config.h"
#include "AX25Frame.h"
#include "AX25Twist.h"
enum AX25_STATE {
AX25_IDLE,
@@ -31,14 +32,15 @@ enum AX25_STATE {
class CAX25Demodulator {
public:
CAX25Demodulator(q15_t* coeffs, uint16_t length);
CAX25Demodulator(int8_t n);
bool process(q15_t* samples, uint8_t length, CAX25Frame& frame);
void setTwist(int8_t n);
private:
CAX25Frame m_frame;
arm_fir_instance_q15 m_audioFilter;
q15_t m_audioState[40U]; // NoTaps + BlockSize - 1, 9 + 20 - 1 plus some spare
CAX25Twist m_twist;
arm_fir_instance_q15 m_lpfFilter;
q15_t m_lpfState[120U]; // NoTaps + BlockSize - 1, 96 + 20 - 1 plus some spare
bool* m_delayLine;