Superminaren/MMDVM
1
0
Fork 0
mirror of https://github.com/g4klx/MMDVM.git synced 2026-08-21 14:36:21 +02:00
Code Issues Packages Projects Releases Wiki Activity

Make the DC blocker optional to reduce CPU load.

Browse Source
This commit is contained in:
Jonathan Naylor
2018-02-26 19:55:14 +00:00
parent 01b3dcc689
commit b21c1f21a4
2 changed files with 38 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files
IO.cpp
+35 -10
View File
@@ -301,13 +301,14 @@ void CIO::process()
if (m_lockout)
return;
q31_t dcLevel = 0;
q31_t dcValues[RX_BLOCK_SIZE];
#if defined(USE_DCBLOCKER)
q31_t q31Samples[RX_BLOCK_SIZE];
::arm_q15_to_q31(samples, q31Samples, RX_BLOCK_SIZE);
q31_t dcValues[RX_BLOCK_SIZE];
::arm_biquad_cascade_df1_q31(&m_dcFilter, q31Samples, dcValues, RX_BLOCK_SIZE);
q31_t dcLevel = 0;
for (uint8_t i = 0U; i < RX_BLOCK_SIZE; i++)
dcLevel += dcValues[i];
dcLevel /= RX_BLOCK_SIZE;
@@ -317,26 +318,37 @@ void CIO::process()
q15_t dcSamples[RX_BLOCK_SIZE];
for (uint8_t i = 0U; i < RX_BLOCK_SIZE; i++)
dcSamples[i] = samples[i] - offset;
#endif
if (m_modemState == STATE_IDLE) {
if (m_dstarEnable) {
q15_t GMSKVals[RX_BLOCK_SIZE];
#if defined(USE_DCBLOCKER)
::arm_fir_fast_q15(&m_gaussianFilter, dcSamples, GMSKVals, RX_BLOCK_SIZE);
#else
::arm_fir_fast_q15(&m_gaussianFilter, samples, GMSKVals, RX_BLOCK_SIZE);
#endif
dstarRX.samples(GMSKVals, rssi, RX_BLOCK_SIZE);
}
if (m_p25Enable) {
q15_t P25Vals[RX_BLOCK_SIZE];
#if defined(USE_DCBLOCKER)
::arm_fir_fast_q15(&m_boxcarFilter, dcSamples, P25Vals, RX_BLOCK_SIZE);
#else
::arm_fir_fast_q15(&m_boxcarFilter, samples, P25Vals, RX_BLOCK_SIZE);
#endif
p25RX.samples(P25Vals, rssi, RX_BLOCK_SIZE);
}
if (m_nxdnEnable) {
q15_t NXDNVals[RX_BLOCK_SIZE];
q15_t NXDNValsTmp[RX_BLOCK_SIZE];
#if defined(USE_DCBLOCKER)
::arm_fir_fast_q15(&m_nxdnFilter, dcSamples, NXDNValsTmp, RX_BLOCK_SIZE);
#else
::arm_fir_fast_q15(&m_nxdnFilter, samples, NXDNValsTmp, RX_BLOCK_SIZE);
#endif
q15_t NXDNVals[RX_BLOCK_SIZE];
::arm_fir_fast_q15(&m_nxdnISincFilter, NXDNValsTmp, NXDNVals, RX_BLOCK_SIZE);
nxdnRX.samples(NXDNVals, rssi, RX_BLOCK_SIZE);
@@ -359,8 +371,11 @@ void CIO::process()
} else if (m_modemState == STATE_DSTAR) {
if (m_dstarEnable) {
q15_t GMSKVals[RX_BLOCK_SIZE];
#if defined(USE_DCBLOCKER)
::arm_fir_fast_q15(&m_gaussianFilter, dcSamples, GMSKVals, RX_BLOCK_SIZE);
#else
::arm_fir_fast_q15(&m_gaussianFilter, samples, GMSKVals, RX_BLOCK_SIZE);
#endif
dstarRX.samples(GMSKVals, rssi, RX_BLOCK_SIZE);
}
} else if (m_modemState == STATE_DMR) {
@@ -381,22 +396,32 @@ void CIO::process()
} else if (m_modemState == STATE_YSF) {
if (m_ysfEnable) {
q15_t YSFVals[RX_BLOCK_SIZE];
#if defined(USE_DCBLOCKER)
::arm_fir_fast_q15(&m_rrcFilter, dcSamples, YSFVals, RX_BLOCK_SIZE);
#else
::arm_fir_fast_q15(&m_rrcFilter, samples, YSFVals, RX_BLOCK_SIZE);
#endif
ysfRX.samples(YSFVals, rssi, RX_BLOCK_SIZE);
}
} else if (m_modemState == STATE_P25) {
if (m_p25Enable) {
q15_t P25Vals[RX_BLOCK_SIZE];
#if defined(USE_DCBLOCKER)
::arm_fir_fast_q15(&m_boxcarFilter, dcSamples, P25Vals, RX_BLOCK_SIZE);
#else
::arm_fir_fast_q15(&m_boxcarFilter, samples, P25Vals, RX_BLOCK_SIZE);
#endif
p25RX.samples(P25Vals, rssi, RX_BLOCK_SIZE);
}
} else if (m_modemState == STATE_NXDN) {
if (m_nxdnEnable) {
q15_t NXDNVals[RX_BLOCK_SIZE];
q15_t NXDNValsTmp[RX_BLOCK_SIZE];
#if defined(USE_DCBLOCKER)
::arm_fir_fast_q15(&m_nxdnFilter, dcSamples, NXDNValsTmp, RX_BLOCK_SIZE);
#else
::arm_fir_fast_q15(&m_nxdnFilter, samples, NXDNValsTmp, RX_BLOCK_SIZE);
#endif
q15_t NXDNVals[RX_BLOCK_SIZE];
::arm_fir_fast_q15(&m_nxdnISincFilter, NXDNValsTmp, NXDNVals, RX_BLOCK_SIZE);
nxdnRX.samples(NXDNVals, rssi, RX_BLOCK_SIZE);