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Allow for two levels of the callsign.

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This commit is contained in:
Jonathan Naylor 2020-04-22 22:10:34 +01:00
parent 526a53cd8c
commit f19009b132
9 changed files with 63 additions and 89 deletions
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74
FMKeyer.cpp
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@ -84,11 +84,13 @@ m_dotLen(0U),
m_dotPos(0U),
m_audio(NULL),
m_audioLen(0U),
m_audioPos(0U)
m_audioPos(0U),
m_highLevel(0U),
m_lowLevel(0)
{
}
uint8_t CFMKeyer::setParams(const char* text, uint8_t speed, uint16_t frequency, uint8_t level)
uint8_t CFMKeyer::setParams(const char* text, uint8_t speed, uint16_t frequency, uint8_t highLevel, uint8_t lowLevel)
{
for (uint8_t i = 0U; text[i] != '\0'; i++) {
for (uint8_t j = 0U; SYMBOL_LIST[j].c != 0U; j++) {
@ -109,58 +111,60 @@ uint8_t CFMKeyer::setParams(const char* text, uint8_t speed, uint16_t frequency,
}
}
q15_t value = q15_t(level * 128);
m_highLevel = q15_t(highLevel * 128);
m_lowLevel = q15_t(lowLevel * 128);
m_dotLen = 24000U / speed; // In samples
m_audioLen = 24000U / frequency; // In samples
m_audio = new q15_t[m_audioLen];
m_audio = new bool[m_audioLen];
for (uint16_t i = 0U; i < m_audioLen; i++) {
if (i < (m_audioLen / 2U))
m_audio[i] = value;
m_audio[i] = true;
else
m_audio[i] = -value;
m_audio[i] = false;
}
return 0U;
}
void CFMKeyer::getAudio(q15_t* samples, uint8_t length)
{
if (!m_wanted)
return;
for (uint8_t i = 0U; i < length; i++) {
bool b = READ_BIT(m_poBuffer, m_poPos);
if (b)
samples[i] += m_audio[m_audioPos];
m_audioPos++;
if (m_audioPos >= m_audioLen)
m_audioPos = 0U;
m_dotPos++;
if (m_dotPos >= m_dotLen) {
m_dotPos = 0U;
m_poPos++;
if (m_poPos >= m_poLen) {
stop();
return;
}
}
}
}
q15_t CFMKeyer::getAudio()
q15_t CFMKeyer::getHighAudio()
{
q15_t output = 0U;
if (!m_wanted)
return 0U;
return 0U;
bool b = READ_BIT(m_poBuffer, m_poPos);
if (b)
output = m_audio[m_audioPos];
output = m_audio[m_audioPos] ? m_highLevel : -m_highLevel;
m_audioPos++;
if (m_audioPos >= m_audioLen)
m_audioPos = 0U;
m_dotPos++;
if (m_dotPos >= m_dotLen) {
m_dotPos = 0U;
m_poPos++;
if (m_poPos >= m_poLen) {
stop();
return output;
}
}
return output;
}
q15_t CFMKeyer::getLowAudio()
{
q15_t output = 0U;
if (!m_wanted)
return 0U;
bool b = READ_BIT(m_poBuffer, m_poPos);
if (b)
output = m_audio[m_audioPos] ? m_lowLevel : -m_lowLevel;
m_audioPos++;
if (m_audioPos >= m_audioLen)