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AP_BattMonitor: Maxell cell voltages timeout after 5sec

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This commit is contained in:
Randy Mackay 2019-12-11 17:03:53 +09:00
parent 51cab958b9
commit 0edc341231
2 changed files with 5 additions and 2 deletions
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4
libraries/AP_BattMonitor/AP_BattMonitor_SMBus_Maxell.cpp
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@ -5,7 +5,6 @@
#include "AP_BattMonitor_SMBus_Maxell.h" #include "AP_BattMonitor_SMBus_Maxell.h"
#include <utility> #include <utility>
#define BATTMONITOR_SMBUS_MAXELL_NUM_CELLS 6
uint8_t maxell_cell_ids[] = { 0x3f, // cell 1 uint8_t maxell_cell_ids[] = { 0x3f, // cell 1
0x3e, // cell 2 0x3e, // cell 2
0x3d, // cell 3 0x3d, // cell 3
@ -60,7 +59,8 @@ void AP_BattMonitor_SMBus_Maxell::timer()
if (read_word(maxell_cell_ids[i], data)) { if (read_word(maxell_cell_ids[i], data)) {
_has_cell_voltages = true; _has_cell_voltages = true;
_state.cell_voltages.cells[i] = data; _state.cell_voltages.cells[i] = data;
} else { _last_cell_update_ms[i] = tnow;
} else if ((tnow - _last_cell_update_ms[i]) > AP_BATTMONITOR_SMBUS_TIMEOUT_MICROS) {
_state.cell_voltages.cells[i] = UINT16_MAX; _state.cell_voltages.cells[i] = UINT16_MAX;
} }
} }

3
libraries/AP_BattMonitor/AP_BattMonitor_SMBus_Maxell.h
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@ -6,6 +6,8 @@
#include "AP_BattMonitor_SMBus.h" #include "AP_BattMonitor_SMBus.h"
#include <AP_HAL/I2CDevice.h> #include <AP_HAL/I2CDevice.h>
#define BATTMONITOR_SMBUS_MAXELL_NUM_CELLS 6
class AP_BattMonitor_SMBus_Maxell : public AP_BattMonitor_SMBus class AP_BattMonitor_SMBus_Maxell : public AP_BattMonitor_SMBus
{ {
public: public:
@ -28,4 +30,5 @@ private:
uint8_t read_block(uint8_t reg, uint8_t* data, bool append_zero) const; uint8_t read_block(uint8_t reg, uint8_t* data, bool append_zero) const;
uint8_t _pec_confirmed; // count of the number of times PEC has been confirmed as working uint8_t _pec_confirmed; // count of the number of times PEC has been confirmed as working
uint32_t _last_cell_update_ms[BATTMONITOR_SMBUS_MAXELL_NUM_CELLS]; // system time of last successful read of cell voltage
}; };