You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
55 lines
1008 B
C++
55 lines
1008 B
C++
#include "sclock.hpp"
|
|
|
|
GPTDriver *SClock::m_timer = &GPTD6;
|
|
unsigned int SClock::m_div = 1;
|
|
unsigned int SClock::m_runcount = 0;
|
|
|
|
const GPTConfig SClock::m_timer_config = {
|
|
.frequency = 4800000,
|
|
.callback = nullptr,
|
|
.cr2 = TIM_CR2_MMS_1, /* TRGO */
|
|
.dier = 0
|
|
};
|
|
|
|
const std::array<unsigned int, 6> SClock::m_rate_divs = {{
|
|
/* 8k */ 600,
|
|
/* 16k */ 300,
|
|
/* 20k */ 240,
|
|
/* 32k */ 150,
|
|
/* 48k */ 100,
|
|
/* 96k */ 50
|
|
}};
|
|
|
|
void SClock::begin()
|
|
{
|
|
gptStart(m_timer, &m_timer_config);
|
|
}
|
|
|
|
void SClock::start()
|
|
{
|
|
if (m_runcount++ == 0)
|
|
gptStartContinuous(m_timer, m_div);
|
|
}
|
|
|
|
void SClock::stop()
|
|
{
|
|
if (--m_runcount == 0)
|
|
gptStopTimer(m_timer);
|
|
}
|
|
|
|
void SClock::setRate(SClock::Rate rate)
|
|
{
|
|
m_div = m_rate_divs[static_cast<unsigned int>(rate)];
|
|
}
|
|
|
|
unsigned int SClock::getRate()
|
|
{
|
|
for (unsigned int i = 0; i < m_rate_divs.size(); ++i) {
|
|
if (m_rate_divs[i] == m_div)
|
|
return i;
|
|
}
|
|
|
|
return static_cast<unsigned int>(-1);
|
|
}
|
|
|