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Started adding AFSK modulator options, cleaning up LCR TX

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This commit is contained in:
furrtek 2015-09-03 06:34:00 +02:00
parent 5468917da6
commit ec26f587f1
9 changed files with 200 additions and 64 deletions
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57
firmware/baseband/main.cpp
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@ -762,40 +762,65 @@ private:
class LCRFSKProcessor : public BasebandProcessor {
public:
void BasebandProcessor() {
afsk_samples_per_bit = shared_memory.afsk_samples_per_bit;
phase_inc_mark = shared_memory.afsk_phase_inc_mark;
phase_inc_space = shared_memory.afsk_phase_inc_space;
}
void execute(buffer_c8_t buffer) override {
for (size_t i = 0; i<buffer.count; i++) {
//Sample generation 2.28M/10=228kHz
if(s >= 9) {
//Sample generation 2.28M/10 = 228kHz
if (s >= 9) {
s = 0;
fsk_samples_per_bit = shared_memory.fskspb;
if(sample_count >= fsk_samples_per_bit) {
cur_byte = shared_memory.lcrdata[bit_pos / 8];
if (sample_count >= afsk_samples_per_bit) {
cur_byte = shared_memory.lcrdata[byte_pos];
if (!cur_byte) {
//TransmitterModel::disable();
bit_pos = 0;
byte_pos = 0;
cur_byte = shared_memory.lcrdata[0];
}
cur_bit = cur_byte >> (7-(bit_pos % 8)) & 1;
cur_byte = (0x55<<1); //DEBUG
//SdddddddpD
//0dddddddp1
gbyte = 0;
gbyte = cur_byte << 1;
gbyte |= 1;
cur_bit = gbyte >> (9-bit_pos) & 1;
bit_pos++;
if (bit_pos == 9) {
bit_pos = 0;
byte_pos++;
} else {
bit_pos++;
}
//aphase = 0x2FFFFFF;
sample_count = 0;
} else {
sample_count++;
}
sample_count++;
if (cur_bit)
aphase += 267187;
aphase += phase_inc_mark; //(353205)
else
aphase += 489844;
aphase += phase_inc_space; //(647542)
sample = sintab[(aphase & 0x03FF0000)>>16];
} else {
s++;
}
sample = sintab[(aphase & 0x03FF0000)>>16];
//FM
frq = sample * 967;
frq = sample * 850; //TODO: Put in config (channel bandwidth)
phase = (phase + frq);
sphase = phase + (256<<16);
@ -808,11 +833,13 @@ public:
}
private:
uint32_t fsk_samples_per_bit;
uint32_t afsk_samples_per_bit;
uint32_t phase_inc_mark, phase_inc_space;
int8_t re, im;
uint8_t s;
uint32_t bit_pos;
uint8_t bit_pos, byte_pos;
uint8_t cur_byte = 0;
uint16_t gbyte;
uint8_t cur_bit = 0;
uint32_t sample_count;
uint32_t aphase, phase, sphase;