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Added CTCSS in Soundboard

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furrtek
2016-09-23 23:08:54 +02:00
parent 629ebd0d28
commit 8276e5e311
9 changed files with 123 additions and 13 deletions
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10
firmware/baseband/proc_audiotx.cpp
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@@ -43,6 +43,12 @@ void AudioTXProcessor::execute(const buffer_c8_t& buffer){
audio_fifo.out(sample);
//preview_audio_buffer.p[ai++] = sample << 8;
if (ctcss_enabled) {
ctcss_sample = sine_table_i8[(ctcss_phase & 0x03FC0000) >> 18];
int16_t mix = (sample * 218) + (ctcss_sample * 37); // ~15%
sample = mix >> 8;
}
if ((audio_fifo.len() < 1024) && (asked == false)) {
// Ask application to fill up fifo
sigmessage.signaltype = 1;
@@ -53,6 +59,8 @@ void AudioTXProcessor::execute(const buffer_c8_t& buffer){
as--;
}
ctcss_phase += ctcss_phase_inc;
// FM
frq = sample * bw;
@@ -79,6 +87,8 @@ void AudioTXProcessor::on_message(const Message* const msg) {
// a = 262144 / 1536000 (*1000 = 171)
bw = 171 * (message->bw);
divider = message->divider;
ctcss_phase_inc = message->ctcss_phase_inc;
ctcss_enabled = message->ctcss_enabled;
as = 0;
configured = true;

6
firmware/baseband/proc_audiotx.hpp
View File

@@ -44,9 +44,11 @@ private:
uint32_t bw;
uint32_t divider;
uint8_t as = 0;
uint32_t ctcss_phase_inc;
bool ctcss_enabled;
int8_t re, im;
int8_t sample;
int8_t ctcss_sample, sample;
bool asked = false;
@@ -58,7 +60,7 @@ private:
FIFOSignalMessage sigmessage;
uint32_t aphase, phase, sphase;
uint32_t ctcss_phase, phase, sphase;
int32_t frq;
};