kopia lustrzana https://github.com/pa3gsb/Radioberry-2.x
233 wiersze
7.0 KiB
C++
233 wiersze
7.0 KiB
C++
#include <time.h>
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#include <sys/time.h>
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#include <stdint.h>
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#include <cstdio>
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#include <cstdlib>
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#include <chrono>
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#include <iostream>
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#include "SoapyRadioberry.hpp"
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void SoapyRadioberry::setSampleRate( const int direction, const size_t channel, const double rate ) {
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SoapySDR_log(SOAPY_SDR_INFO, "SoapyRadioberry::setSampleRate called");
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int irate = floor(rate);
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uint32_t ucom =0x00000004;
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uint32_t command = 0;
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if (direction == SOAPY_SDR_TX)
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{
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command = 1;
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ucom = 0x00000004;
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}
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else
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{
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if (rate < 48001.0)
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ucom = 0x00000004;
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if (rate > 48000.0 && rate < 96001.0)
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ucom = 0x01000004;
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if (rate > 96000.0 && rate < 192001.0)
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ucom = 0x02000004;
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if (rate > 192000.0)
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ucom = 0x03000004;
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}
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this->SoapyRadioberry::controlRadioberry(command, ucom);
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}
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SoapySDR::RangeList SoapyRadioberry::getSampleRateRange(const int direction, const size_t channel) const
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{
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SoapySDR_log(SOAPY_SDR_INFO, "SoapyRadioberry::getSampleRateRange called");
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SoapySDR::RangeList rangeList;
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if (direction == SOAPY_SDR_RX) rangeList.push_back(SoapySDR::Range(48000.0, 384000.0, 48000.0));
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if (direction == SOAPY_SDR_TX) rangeList.push_back(SoapySDR::Range(48000.0, 48000.0, 48000.0));
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return rangeList;
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}
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std::vector<std::string> SoapyRadioberry::getStreamFormats(const int direction, const size_t channel) const
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{
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SoapySDR_log(SOAPY_SDR_INFO, "SoapyRadioberry::getStreamFormats called");
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std::vector<std::string> formats;
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formats.push_back(SOAPY_SDR_CF32);
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formats.push_back(SOAPY_SDR_CS16);
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return formats;
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}
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std::string SoapyRadioberry::getNativeStreamFormat(const int direction, const size_t channel, double &fullScale) const
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{
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SoapySDR_log(SOAPY_SDR_INFO, "SoapyRadioberry::getNativeStreamFormat called");
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if (direction == SOAPY_SDR_RX) {
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fullScale = 2048; // RX expects 12 bit samples LSB aligned
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}
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else if (direction == SOAPY_SDR_TX) {
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fullScale = 32768; // TX expects 12 bit samples MSB aligned
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}
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return SOAPY_SDR_CF32;
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}
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SoapySDR::ArgInfoList SoapyRadioberry::getStreamArgsInfo(const int direction, const size_t channel) const
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{
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SoapySDR::ArgInfoList streamArgs;
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SoapySDR::ArgInfo bufflenArg;
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bufflenArg.key = "bufflen";
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bufflenArg.value = "64";
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bufflenArg.name = "Buffer Size";
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bufflenArg.description = "Number of bytes per buffer, multiples of 512 only.";
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bufflenArg.units = "bytes";
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bufflenArg.type = SoapySDR::ArgInfo::INT;
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streamArgs.push_back(bufflenArg);
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return streamArgs;
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}
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auto startTime = std::chrono::high_resolution_clock::now();
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SoapySDR::Stream *SoapyRadioberry::setupStream(
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const int direction,
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const std::string &format,
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const std::vector<size_t> &channels,
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const SoapySDR::Kwargs &args )
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{
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SoapySDR_log(SOAPY_SDR_INFO, "SoapyRadioberry::setupStream called");
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startTime = std::chrono::high_resolution_clock::now();
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//check the format
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if (format == SOAPY_SDR_CF32) {
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SoapySDR_log(SOAPY_SDR_INFO, "Using format CF32.");
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streamFormat = RADIOBERRY_SDR_CF32;
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}
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else if(format == SOAPY_SDR_CS16 && direction == SOAPY_SDR_TX)
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{
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SoapySDR_log(SOAPY_SDR_INFO, "Using format CS16.");
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streamFormat = RADIOBERRY_SDR_CS16;
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}
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else
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{
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throw std::runtime_error(
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"setupStream invalid format '" + format + "' -- Only CF32 is supported by SoapyRadioberrySDR module.");
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}
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return (SoapySDR::Stream *) this;
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}
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int SoapyRadioberry::readStream(
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SoapySDR::Stream *handle,
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void * const *buffs,
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const size_t numElems,
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int &flags,
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long long &timeNs,
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const long timeoutUs )
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{
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int i;
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int iq = 0;
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int16_t left_sample;
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int16_t right_sample;
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int nr_samples;
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void *buff_base = buffs[0];
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float *target_buffer = (float *) buff_base;
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int16_t *itarget_buffer = (int16_t *) buff_base;
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char rx_buffer[512];
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for(int ii = 0 ; ii < npackages ; ii++)
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{
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nr_samples = read(fd_rb, rx_buffer, sizeof(rx_buffer));
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//printf("nr_samples %d sample: %d %d %d %d %d %d\n",nr_samples, (int)rx_buffer[0],(int)rx_buffer[1],(int)rx_buffer[2],(int)rx_buffer[3],(int)rx_buffer[4],(int)rx_buffer[5]);
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if(streamFormat == RADIOBERRY_SDR_CF32)
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{
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for (i = 0; i < nr_samples; i += 6) {
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left_sample = (int)((signed char) rx_buffer[i]) << 16;
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left_sample |= (int)((((unsigned char)rx_buffer[i + 1]) << 8) & 0xFF00);
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left_sample |= (int)((unsigned char)rx_buffer[i + 2] & 0xFF);
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right_sample = (int)((signed char)rx_buffer[i + 3]) << 16;
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right_sample |= (int)((((unsigned char)rx_buffer[i + 4]) << 8) & 0xFF00);
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right_sample |= (int)((unsigned char)rx_buffer[i + 5] & 0xFF);
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right_sample = right_sample * -1;
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target_buffer[iq++] = (float)left_sample / 2048.0; // 12 bit sample
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target_buffer[iq++] = (float)right_sample / 2048.0; // 12 bit sample
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//printf("nr_samples %d sample: %d %d \n", nr_samples, left_sample, right_sample);
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}
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}
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if (streamFormat == RADIOBERRY_SDR_CS16)
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{
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for (i = 0; i < nr_samples; i += 6) {
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left_sample = (int16_t)((signed char) rx_buffer[i]) << 16;
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left_sample |= (int16_t)((((unsigned char)rx_buffer[i + 1]) << 8) & 0xFF00);
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left_sample |= (int16_t)((unsigned char)rx_buffer[i + 2] & 0xFF);
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right_sample = (int16_t)((signed char)rx_buffer[i + 3]) << 16;
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right_sample |= (int16_t)((((unsigned char)rx_buffer[i + 4]) << 8) & 0xFF00);
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right_sample |= (int16_t)((unsigned char)rx_buffer[i + 5] & 0xFF);
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right_sample = right_sample * -1;
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itarget_buffer[iq++] = left_sample << 4; // 12 bit sample
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itarget_buffer[iq++] = right_sample << 4; // 12 bit sample
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}
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}
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}
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return (npackages * nr_samples / 6); //return the number of IQ samples
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}
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union uTxBuffer
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{
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std::uint16_t i16TxBuffer[2];
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unsigned char i8TxBuffer[4];
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};
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int SoapyRadioberry::writeStream(SoapySDR::Stream *stream, const void * const *buffs, const size_t numElems, int &flags, const long long timeNs, const long timeoutUs)
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{
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int iq = 0;
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size_t ret;
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int left_sample;
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int right_sample;
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int nr_samples;
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void const *buff_base = buffs[0];
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float *target_buffer = (float *) buff_base;
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int16_t *itarget_buffer = (int16_t *) buff_base;
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uTxBuffer tx;
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if (streamFormat == RADIOBERRY_SDR_CF32)
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{
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for (int ii = 0; ii < numElems; ii++)
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{
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float i, q;
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int16_t di, dq;
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tx.i16TxBuffer[0] = (int16_t)(target_buffer[iq++] * 16384.0f);
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tx.i16TxBuffer[1] = (int16_t)(target_buffer[iq++] * -16384.0f);
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ret = write(fd_rb, &tx, 4 * sizeof(uint8_t));
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}
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}
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if (streamFormat == RADIOBERRY_SDR_CS16)
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{
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int j = 0;
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//printf("SoapySDR send %d elements count %d\n", numElems, m_count);
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for (int ii = 0; ii < numElems; ii++)
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{
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//printf("%x %x %x %x\n", (itarget_buffer[j] & 0xFF00) >> 8, (itarget_buffer[j] & 0x00FF), (itarget_buffer[j+1] & 0xFF00) >> 8, (itarget_buffer[j+1] & 0x00FF));
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tx.i8TxBuffer[0] = (unsigned char)((itarget_buffer[j] & 0xff00) >> 8);
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tx.i8TxBuffer[1] = (unsigned char)(itarget_buffer[j] & 0xff);
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tx.i8TxBuffer[2] = (unsigned char)(((-1 * itarget_buffer[j + 1]) & 0xff00) >> 8);
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tx.i8TxBuffer[3] = (unsigned char)(( -1 * itarget_buffer[j + 1]) & 0xff);
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ret = write(fd_rb, &tx, sizeof(uint32_t));
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j += 2;
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}
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}
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return numElems;
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} |