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Battery protection (#888) #7

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Merged
sshane merged 1 commit into from
Dec 4, 2019
Merged

Battery protection (#888) #7

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12 changes: 11 additions & 1 deletion selfdrive/boardd/boardd.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -57,6 +57,8 @@ bool loopback_can = false;
cereal::HealthData::HwType hw_type = cereal::HealthData::HwType::UNKNOWN;
bool is_pigeon = false;
const uint32_t NO_IGNITION_CNT_MAX = 2 * 60 * 60 * 24 * 3; // turn off charge after 3 days
const uint32_t VBATT_START_CHARGING = 11500;
const uint32_t VBATT_PAUSE_CHARGING = 10500;
uint32_t no_ignition_cnt = 0;
bool connected_once = false;
bool ignition_last = false;
Expand Down Expand Up @@ -353,12 +355,20 @@ void can_health(PubSocket *publisher) {
}

#ifndef __x86_64__
if ((no_ignition_cnt > NO_IGNITION_CNT_MAX) && (health.usb_power_mode == (uint8_t)(cereal::HealthData::UsbPowerMode::CDP))) {
bool cdp_mode = health.usb_power_mode == (uint8_t)(cereal::HealthData::UsbPowerMode::CDP);
bool no_ignition_exp = no_ignition_cnt > NO_IGNITION_CNT_MAX;
if ((no_ignition_exp || (health.voltage < VBATT_PAUSE_CHARGING)) && cdp_mode && !ignition) {
printf("TURN OFF CHARGING!\n");
pthread_mutex_lock(&usb_lock);
libusb_control_transfer(dev_handle, 0xc0, 0xe6, (uint16_t)(cereal::HealthData::UsbPowerMode::CLIENT), 0, NULL, 0, TIMEOUT);
pthread_mutex_unlock(&usb_lock);
}
if (!no_ignition_exp && (health.voltage > VBATT_START_CHARGING) && !cdp_mode) {
printf("TURN ON CHARGING!\n");
pthread_mutex_lock(&usb_lock);
libusb_control_transfer(dev_handle, 0xc0, 0xe6, (uint16_t)(cereal::HealthData::UsbPowerMode::CDP), 0, NULL, 0, TIMEOUT);
pthread_mutex_unlock(&usb_lock);
}
#endif

// clear VIN, CarParams, and set new safety on car start
Expand Down
2 changes: 1 addition & 1 deletion selfdrive/controls/lib/alerts_offroad.json
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
{
"Offroad_ChargeDisabled": {
"text": "EON charging disabled after car being off for more than 3 days. Turn ignition on to start charging again.",
"text": "EON charging disabled after car being off for more than 3 days or car voltage too low. Turn ignition on to start charging again.",
"severity": 0
},
"Offroad_TemperatureTooHigh": {
Expand Down