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dashboard: expand CAN diagnostics

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nick
2026-07-26 14:49:19 -06:00
parent 6d61078484
commit ed9611310e
2 changed files with 107 additions and 3 deletions
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firmware/esp32-s3-dashboard/esp32-s3-dashboard.ino
+96 -3
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@@ -47,7 +47,13 @@ static unsigned long last_obd_poll_ms = 0;
static unsigned long last_obd_rx_ms = 0;
static unsigned long last_obd_tx_ms = 0;
static uint32_t obd_tx_count = 0;
static uint32_t obd_tx_fail_count = 0;
static uint32_t obd_rx_count = 0;
static uint32_t obd_raw_rx_count = 0;
static uint32_t obd_last_rx_identifier = 0;
static uint8_t obd_last_rx_dlc = 0;
static bool obd_last_rx_extended = false;
static unsigned long last_obd_raw_rx_ms = 0;
static int obd_coolant_temp_f = -999;
static int last_rendered_obd_coolant_temp_f = -1000;
static String obd_last_error = "not initialized";
@@ -491,6 +497,7 @@ static void send_obd_coolant_request()
last_obd_tx_ms = millis();
obd_last_error = "coolant request sent";
} else {
obd_tx_fail_count++;
obd_last_error = "tx failed: " + String((int)result);
}
}
@@ -539,6 +546,12 @@ static void process_obd_can()
twai_message_t message = {};
while (twai_receive(&message, 0) == ESP_OK) {
obd_raw_rx_count++;
obd_last_rx_identifier = message.identifier;
obd_last_rx_dlc = message.data_length_code;
obd_last_rx_extended = message.extd;
last_obd_raw_rx_ms = millis();
handle_obd_can_message(message);
}
@@ -625,15 +638,95 @@ static void update_diagnostics_overlay()
text += "\n\nOBD-II / CAN\n";
text += " TWAI: ";
text += obd_can_started ? "started" : "offline";
text += " @ 500 kbps";
text += "\n Pins: TX GPIO15 / RX GPIO16";
text += "\n Coolant: ";
text += obd_coolant_temp_f > -100 ? String(obd_coolant_temp_f) + "°F" : String("--");
text += "\n TX/RX: ";
text += "\n Requests OK/fail: ";
text += String(obd_tx_count);
text += "/";
text += String(obd_tx_fail_count);
text += "\n Raw RX/coolant RX: ";
text += String(obd_raw_rx_count);
text += "/";
text += String(obd_rx_count);
text += "\n Last RX age: ";
text += last_obd_rx_ms > 0 ? String((millis() - last_obd_rx_ms) / 1000) + "s" : String("--");
text += "\n Last frame: ";
if (obd_raw_rx_count > 0) {
text += obd_last_rx_extended ? "EXT 0x" : "STD 0x";
text += String(obd_last_rx_identifier, HEX);
text += " DLC ";
text += String(obd_last_rx_dlc);
} else {
text += "--";
}
text += "\n Raw RX age: ";
text += last_obd_raw_rx_ms > 0
? String((millis() - last_obd_raw_rx_ms) / 1000) + "s"
: String("--");
text += "\n Coolant RX age: ";
text += last_obd_rx_ms > 0
? String((millis() - last_obd_rx_ms) / 1000) + "s"
: String("--");
if (obd_can_started) {
twai_status_info_t can_status = {};
esp_err_t status_result = twai_get_status_info(&can_status);
if (status_result == ESP_OK) {
const char *state_text = "unknown";
switch (can_status.state) {
case TWAI_STATE_STOPPED:
state_text = "stopped";
break;
case TWAI_STATE_RUNNING:
state_text = "running";
break;
case TWAI_STATE_BUS_OFF:
state_text = "bus-off";
break;
case TWAI_STATE_RECOVERING:
state_text = "recovering";
break;
default:
break;
}
text += "\n State: ";
text += state_text;
text += " TXq/RXq ";
text += String(can_status.msgs_to_tx);
text += "/";
text += String(can_status.msgs_to_rx);
text += "\n TEC/REC: ";
text += String(can_status.tx_error_counter);
text += "/";
text += String(can_status.rx_error_counter);
text += "\n Fail/miss/overrun: ";
text += String(can_status.tx_failed_count);
text += "/";
text += String(can_status.rx_missed_count);
text += "/";
text += String(can_status.rx_overrun_count);
text += "\n Arb lost/bus errors: ";
text += String(can_status.arb_lost_count);
text += "/";
text += String(can_status.bus_error_count);
} else {
text += "\n Driver status error: ";
text += String((int)status_result);
}
}
text += "\n Last status: ";
text += obd_last_error;