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Merge pull request #8 from hatlabs/n2k_fixes

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Reset automatically if CAN bus goes belly-up.
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Matti Airas 2023-01-01 17:28:57 +02:00 committed by GitHub
commit 72a0bbc134
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1 changed files with 53 additions and 25 deletions
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70
src/main.cpp
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@ -5,14 +5,16 @@
#define SDA_PIN 16 #define SDA_PIN 16
#define SCL_PIN 17 #define SCL_PIN 17
#include <Wire.h> #include <ActisenseReader.h>
#include <Adafruit_GFX.h> #include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h> #include <Adafruit_SSD1306.h>
#include <N2kMessages.h> #include <N2kMessages.h>
#include <ActisenseReader.h>
#include <NMEA2000_esp32.h> #include <NMEA2000_esp32.h>
#include <ReactESP.h> #include <ReactESP.h>
#include <Wire.h>
#include <esp_int_wdt.h>
#include <esp_task_wdt.h>
using namespace reactesp; using namespace reactesp;
ReactESP app; ReactESP app;
@ -20,16 +22,16 @@ ReactESP app;
#define SCREEN_WIDTH 128 // OLED display width, in pixels #define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels #define SCREEN_HEIGHT 64 // OLED display height, in pixels
TwoWire* i2c; TwoWire *i2c;
Stream *read_stream=&Serial; Stream *read_stream = &Serial;
Stream *forward_stream=&Serial; Stream *forward_stream = &Serial;
tActisenseReader actisense_reader; tActisenseReader actisense_reader;
Adafruit_SSD1306* display; Adafruit_SSD1306 *display;
tNMEA2000* nmea2000; tNMEA2000 *nmea2000;
void ToggleLed() { void ToggleLed() {
static bool led_state = false; static bool led_state = false;
@ -52,6 +54,30 @@ void HandleStreamActisenseMsg(const tN2kMsg &message) {
nmea2000->SendMsg(message); nmea2000->SendMsg(message);
} }
String can_state;
void PollCANStatus() {
// CAN controller registers are SJA1000 compatible.
// Bus status value 0 indicates bus-on; value 1 indicates bus-off.
unsigned int bus_status = MODULE_CAN->SR.B.BS;
switch (bus_status) {
case 0:
can_state = "RUNNING";
break;
case 1:
can_state = "BUS-OFF";
// try to automatically recover by rebooting
app.onDelay(2000, []() {
esp_task_wdt_init(1, true);
esp_task_wdt_add(NULL);
while (true)
;
});
break;
}
}
void setup() { void setup() {
// setup serial output // setup serial output
Serial.begin(115200); Serial.begin(115200);
@ -59,9 +85,7 @@ void setup() {
// toggle the LED pin at rate of 1 Hz // toggle the LED pin at rate of 1 Hz
pinMode(LED_BUILTIN, OUTPUT); pinMode(LED_BUILTIN, OUTPUT);
app.onRepeatMicros(1e6 / 1, []() { app.onRepeatMicros(1e6 / 1, []() { ToggleLed(); });
ToggleLed();
});
// instantiate the NMEA2000 object // instantiate the NMEA2000 object
nmea2000 = new tNMEA2000_esp32(CAN_TX_PIN, CAN_RX_PIN); nmea2000 = new tNMEA2000_esp32(CAN_TX_PIN, CAN_RX_PIN);
@ -75,11 +99,12 @@ void setup() {
// Set Product information // Set Product information
nmea2000->SetProductInformation( nmea2000->SetProductInformation(
"20210331", // Manufacturer's Model serial code (max 32 chars) "20210331", // Manufacturer's Model serial code (max 32 chars)
103, // Manufacturer's product code 103, // Manufacturer's product code
"SH-ESP32 NMEA 2000 USB GW", // Manufacturer's Model ID (max 33 chars) "SH-ESP32 NMEA 2000 USB GW", // Manufacturer's Model ID (max 33 chars)
"0.1.0.0 (2021-03-31)", // Manufacturer's Software version code (max 40 chars) "0.1.0.0 (2021-03-31)", // Manufacturer's Software version code (max 40
"0.0.3.1 (2021-03-07)" // Manufacturer's Model version (max 24 chars) // chars)
"0.0.3.1 (2021-03-07)" // Manufacturer's Model version (max 24 chars)
); );
// Set device information // Set device information
nmea2000->SetDeviceInformation( nmea2000->SetDeviceInformation(
@ -94,8 +119,9 @@ void setup() {
nmea2000->SetForwardStream(forward_stream); nmea2000->SetForwardStream(forward_stream);
nmea2000->SetMode(tNMEA2000::N2km_ListenAndNode); nmea2000->SetMode(tNMEA2000::N2km_ListenAndNode);
// nmea2000->SetForwardType(tNMEA2000::fwdt_Text); // Show bus data in clear text // nmea2000->SetForwardType(tNMEA2000::fwdt_Text); // Show bus data in clear
nmea2000->SetForwardOwnMessages(false); // do not echo own messages. // text
nmea2000->SetForwardOwnMessages(false); // do not echo own messages.
nmea2000->SetMsgHandler(HandleStreamN2kMsg); nmea2000->SetMsgHandler(HandleStreamN2kMsg);
nmea2000->Open(); nmea2000->Open();
@ -109,6 +135,9 @@ void setup() {
actisense_reader.ParseMessages(); actisense_reader.ParseMessages();
}); });
// enable CAN status polling
app.onRepeat(100, []() { PollCANStatus(); });
// initialize the display // initialize the display
i2c = new TwoWire(0); i2c = new TwoWire(0);
i2c->begin(SDA_PIN, SCL_PIN); i2c->begin(SDA_PIN, SCL_PIN);
@ -129,6 +158,7 @@ void setup() {
display->setCursor(0, 0); display->setCursor(0, 0);
display->setTextColor(SSD1306_WHITE); display->setTextColor(SSD1306_WHITE);
display->printf("SH-ESP32 N2K USB GW\n"); display->printf("SH-ESP32 N2K USB GW\n");
display->printf("CAN: %s\n", can_state.c_str());
display->printf("Uptime: %lu\n", millis() / 1000); display->printf("Uptime: %lu\n", millis() / 1000);
display->printf("RX: %d\n", num_n2k_messages); display->printf("RX: %d\n", num_n2k_messages);
display->printf("TX: %d\n", num_actisense_messages); display->printf("TX: %d\n", num_actisense_messages);
@ -140,6 +170,4 @@ void setup() {
}); });
} }
void loop() { void loop() { app.tick(); }
app.tick();
}