ardupilot/libraries/AP_HAL_SITL/RCOutput.cpp

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#include <AP_HAL/AP_HAL.h>
#if CONFIG_HAL_BOARD == HAL_BOARD_SITL
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#include "RCOutput.h"
#define ENABLE_DEBUG 0
#if ENABLE_DEBUG
# include <stdio.h>
# define Debug(fmt, args ...) do {::printf("%s:%d: " fmt "\n", __FUNCTION__, __LINE__, ## args); } while (0)
#else
# define Debug(fmt, args ...)
#endif
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using namespace HALSITL;
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void RCOutput::init() {}
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void RCOutput::set_freq(uint32_t chmask, uint16_t freq_hz)
{
Debug("set_freq(0x%04x, %u)\n", static_cast<uint32_t>(chmask), static_cast<uint32_t>(freq_hz));
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_freq_hz = freq_hz;
}
uint16_t RCOutput::get_freq(uint8_t ch)
{
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return _freq_hz;
}
void RCOutput::enable_ch(uint8_t ch)
{
if (!(_enable_mask & (1U << ch))) {
Debug("enable_ch(%u)\n", ch);
}
_enable_mask |= 1U << ch;
}
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void RCOutput::disable_ch(uint8_t ch)
{
if (_enable_mask & (1U << ch)) {
Debug("disable_ch(%u)\n", ch);
}
_enable_mask &= ~1U << ch;
}
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void RCOutput::write(uint8_t ch, uint16_t period_us)
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{
_sitlState->output_ready = true;
if (ch < SITL_NUM_CHANNELS && (_enable_mask & (1U<<ch))) {
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if (_corked) {
_pending[ch] = period_us;
} else {
_sitlState->pwm_output[ch] = period_us;
}
}
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}
uint16_t RCOutput::read(uint8_t ch)
{
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if (ch < SITL_NUM_CHANNELS) {
return _sitlState->pwm_output[ch];
}
return 0;
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}
void RCOutput::read(uint16_t* period_us, uint8_t len)
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{
memcpy(period_us, _sitlState->pwm_output, len * sizeof(uint16_t));
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}
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void RCOutput::cork(void)
{
if (!_corked) {
memcpy(_pending, _sitlState->pwm_output, SITL_NUM_CHANNELS * sizeof(uint16_t));
_corked = true;
}
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}
void RCOutput::push(void)
{
if (_corked) {
memcpy(_sitlState->pwm_output, _pending, SITL_NUM_CHANNELS * sizeof(uint16_t));
_corked = false;
}
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}
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#endif