ardupilot/libraries/AP_BattMonitor/AP_BattMonitor_ESC.cpp

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/*
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "AP_BattMonitor_config.h"
#if AP_BATTERY_ESC_ENABLED
#include "AP_BattMonitor_ESC.h"
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const AP_Param::GroupInfo AP_BattMonitor_ESC::var_info[] = {
// Param indexes must be between 36 and 39 to avoid conflict with other battery monitor param tables loaded by pointer
// @Param: ESC_MASK
// @DisplayName: ESC mask
// @Description: If 0 all connected ESCs will be used. If non-zero, only those selected in will be used.
// @Bitmask: 0: ESC 1, 1: ESC 2, 2: ESC 3, 3: ESC 4, 4: ESC 5, 5: ESC 6, 6: ESC 7, 7: ESC 8, 8: ESC 9, 9: ESC 10, 10: ESC 11, 11: ESC 12, 12: ESC 13, 13: ESC 14, 14: ESC 15, 15: ESC 16, 16: ESC 17, 17: ESC 18, 18: ESC 19, 19: ESC 20, 20: ESC 21, 21: ESC 22, 22: ESC 23, 23: ESC 24, 24: ESC 25, 25: ESC 26, 26: ESC 27, 27: ESC 28, 28: ESC 29, 29: ESC 30, 30: ESC 31, 31: ESC 32
// @User: Standard
AP_GROUPINFO("ESC_MASK", 36, AP_BattMonitor_ESC, _mask, 0),
// Param indexes must be between 36 and 39 to avoid conflict with other battery monitor param tables loaded by pointer
AP_GROUPEND
};
// constructor. This incorporates initialisation as well.
AP_BattMonitor_ESC::AP_BattMonitor_ESC(AP_BattMonitor &mon,
AP_BattMonitor::BattMonitor_State &mon_state,
AP_BattMonitor_Params &params):
AP_BattMonitor_Backend(mon, mon_state, params)
{
AP_Param::setup_object_defaults(this, var_info);
_state.var_info = var_info;
};
void AP_BattMonitor_ESC::init(void)
{
}
void AP_BattMonitor_ESC::read(void)
{
AP_ESC_Telem& telem = AP::esc_telem();
uint8_t voltage_escs = 0; // number of ESCs with valid voltage
uint8_t temperature_escs = 0; // number of ESCs with valid temperature
float voltage_sum = 0;
float current_sum = 0;
float temperature_sum = 0;
float consumed_mah_sum = 0.0;
uint32_t highest_ms = 0;
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const bool all_enabled = _mask == 0;
for (uint8_t i=0; i<ESC_TELEM_MAX_ESCS; i++) {
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if (!all_enabled && ((_mask & (1U<<i)) == 0)) {
// Only include ESCs set in mask
continue;
}
int16_t temperature_cdeg;
float voltage;
float current;
float consumption_mah;
if (telem.get_consumption_mah(i, consumption_mah)) {
// accumulate consumed_sum regardless of age, to cope with ESC
// dropping out
consumed_mah_sum += consumption_mah;
have_consumed_mah = true;
}
if (telem.get_voltage(i, voltage)) {
voltage_sum += voltage;
voltage_escs++;
}
if (telem.get_current(i, current)) {
current_sum += current;
have_current = true;
}
if (telem.get_temperature(i, temperature_cdeg)) {
temperature_sum += float(temperature_cdeg) * 0.01f;
temperature_escs++;
}
if (telem.get_last_telem_data_ms(i) > highest_ms) {
highest_ms = telem.get_last_telem_data_ms(i);
}
}
if (voltage_escs > 0) {
_state.voltage = voltage_sum / voltage_escs;
_state.healthy = true;
} else {
_state.voltage = 0;
_state.healthy = false;
}
if (temperature_escs > 0) {
_state.temperature = temperature_sum / temperature_escs;
have_temperature = true;
} else {
_state.temperature = 0;
}
_state.current_amps = current_sum;
_state.last_time_micros = highest_ms * 1000;
_state.temperature_time = highest_ms;
const uint32_t now_us = AP_HAL::micros();
const uint32_t dt_us = now_us - last_read_us;
last_read_us = now_us;
if (have_consumed_mah) {
// Report the cumulative consumed mah as reported by the ESCs
// delta_mah allows reset_remaining to function without being able to reset the values sent by the ESCs
_state.consumed_mah = delta_mah + consumed_mah_sum;
} else if (have_current) {
// ESCs provide current but not consumed mah, integrate manually
update_consumed(_state, dt_us);
}
}
bool AP_BattMonitor_ESC::reset_remaining(float percentage)
{
delta_mah = 0.0f;
read();
const float current_mah = _state.consumed_mah;
if (AP_BattMonitor_Backend::reset_remaining(percentage)) {
delta_mah = _state.consumed_mah - current_mah;
return true;
}
return false;
}
#endif // AP_BATTERY_ESC_ENABLED