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Added Glucose Level Display

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A hidden feature for Nightscout user, use the ntpserver2 input field to add your Nightcout server and the device will show the levels, it will fetch new levels every 2.5 min
This commit is contained in:
M-Factory
2025-08-07 17:15:57 +09:00
parent b29411a8ca
commit 0ac1a4f416
4 changed files with 250 additions and 100 deletions
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160
ESPTimeCast_ESP32/ESPTimeCast_ESP32.ino
View File

@@ -11,6 +11,7 @@
#include <DNSServer.h>
#include <sntp.h>
#include <time.h>
#include <WiFiClientSecure.h>
#include "mfactoryfont.h" // Custom font
#include "tz_lookup.h" // Timezone lookup, do not duplicate mapping here!
@@ -51,7 +52,7 @@ bool showDayOfWeek = true;
bool showHumidity = false;
bool colonBlinkEnabled = true;
char ntpServer1[64] = "pool.ntp.org";
char ntpServer2[64] = "time.nist.gov";
char ntpServer2[256] = "time.nist.gov";
// Dimming
bool dimmingEnabled = false;
@@ -1244,68 +1245,64 @@ void setup() {
void advanceDisplayMode() {
int oldMode = displayMode; // Store the old mode
int oldMode = displayMode;
String ntpField = String(ntpServer2);
bool nightscoutConfigured = ntpField.startsWith("https://");
// Determine the next display mode based on the current mode and conditions
if (displayMode == 0) { // Current mode is Clock
if (displayMode == 0) { // Clock -> ...
if (weatherAvailable && (strlen(openWeatherApiKey) == 32) && (strlen(openWeatherCity) > 0) && (strlen(openWeatherCountry) > 0)) {
displayMode = 1; // Clock -> Weather (if weather is available and configured)
displayMode = 1;
Serial.println(F("[DISPLAY] Switching to display mode: WEATHER (from Clock)"));
} else if (countdownEnabled && !countdownFinished && ntpSyncSuccessful) {
displayMode = 3; // Clock -> Countdown (if weather is NOT available/configured, but countdown is)
displayMode = 3;
Serial.println(F("[DISPLAY] Switching to display mode: COUNTDOWN (from Clock, weather skipped)"));
} else if (nightscoutConfigured) {
displayMode = 4; // Clock -> Nightscout (if weather & countdown are skipped)
Serial.println(F("[DISPLAY] Switching to display mode: NIGHTSCOUT (from Clock, weather & countdown skipped)"));
} else {
displayMode = 0; // Clock -> Clock (if neither weather nor countdown is available)
Serial.println(F("[DISPLAY] Staying in CLOCK (from Clock, no weather/countdown available)"));
displayMode = 0;
Serial.println(F("[DISPLAY] Staying in CLOCK (from Clock)"));
}
} else if (displayMode == 1) { // Current mode is Weather
} else if (displayMode == 1) { // Weather -> ...
if (showWeatherDescription && weatherAvailable && weatherDescription.length() > 0) {
displayMode = 2; // Weather -> Description (if description is enabled and available)
displayMode = 2;
Serial.println(F("[DISPLAY] Switching to display mode: DESCRIPTION (from Weather)"));
} else if (countdownEnabled && !countdownFinished && ntpSyncSuccessful) {
displayMode = 3; // Weather -> Countdown (if description is NOT enabled/available, but countdown is)
displayMode = 3;
Serial.println(F("[DISPLAY] Switching to display mode: COUNTDOWN (from Weather)"));
} else if (nightscoutConfigured) {
displayMode = 4; // Weather -> Nightscout (if description & countdown are skipped)
Serial.println(F("[DISPLAY] Switching to display mode: NIGHTSCOUT (from Weather, description & countdown skipped)"));
} else {
displayMode = 0; // Weather -> Clock (if neither description nor countdown is available)
displayMode = 0;
Serial.println(F("[DISPLAY] Switching to display mode: CLOCK (from Weather)"));
}
} else if (displayMode == 2) { // Current mode is Weather Description
} else if (displayMode == 2) { // Weather Description -> ...
if (countdownEnabled && !countdownFinished && ntpSyncSuccessful) {
displayMode = 3; // Description -> Countdown (if countdown is valid)
displayMode = 3;
Serial.println(F("[DISPLAY] Switching to display mode: COUNTDOWN (from Description)"));
} else if (nightscoutConfigured) {
displayMode = 4; // Description -> Nightscout (if countdown is skipped)
Serial.println(F("[DISPLAY] Switching to display mode: NIGHTSCOUT (from Description, countdown skipped)"));
} else {
displayMode = 0; // Description -> Clock (if countdown is NOT valid)
displayMode = 0;
Serial.println(F("[DISPLAY] Switching to display mode: CLOCK (from Description)"));
}
} else if (displayMode == 3) { // Current mode is Countdown
displayMode = 0; // Countdown -> Clock (always return to clock after countdown)
Serial.println(F("[DISPLAY] Switching to display mode: CLOCK (from Countdown)"));
} else if (displayMode == 3) { // Countdown -> Nightscout
if (nightscoutConfigured) {
displayMode = 4;
Serial.println(F("[DISPLAY] Switching to display mode: NIGHTSCOUT (from Countdown)"));
} else {
displayMode = 0;
Serial.println(F("[DISPLAY] Switching to display mode: CLOCK (from Countdown)"));
}
} else if (displayMode == 4) { // Nightscout -> Clock
displayMode = 0;
Serial.println(F("[DISPLAY] Switching to display mode: CLOCK (from Nightscout)"));
}
// --- Common cleanup/reset after mode switch ---
lastSwitch = millis(); // Reset the timer for the new mode's duration
// Reset variables specifically for the mode being ENTERED
if (displayMode == 3) { // Entering Countdown mode
countdownScrolling = false; // Ensure scrolling starts from beginning
countdownStaticStartTime = 0; // Reset static display timer
}
// Clear display and reset flags when EXITING specific modes
if (oldMode == 2 && displayMode != 2) { // Exiting Description Mode
P.displayClear();
descScrolling = false;
descStartTime = 0;
descScrollEndTime = 0;
Serial.println(F("[DISPLAY] Cleared display after exiting Description Mode."));
}
if (oldMode == 3 && displayMode != 3) { // Exiting Countdown Mode
P.displayClear();
countdownScrolling = false;
countdownStaticStartTime = 0;
countdownScrollEndTime = 0;
Serial.println(F("[DISPLAY] Cleared display after exiting Countdown Mode."));
}
// --- Common cleanup/reset logic remains the same ---
lastSwitch = millis();
}
//config save after countdown finishes
@@ -1710,6 +1707,7 @@ void loop() {
}
// --- Countdown Display Mode ---
if (displayMode == 3 && countdownEnabled && ntpSyncSuccessful) {
static int countdownSegment = 0;
@@ -1966,5 +1964,83 @@ void loop() {
return;
} // End of if (displayMode == 3 && ...)
// --- NIGHTSCOUT Display Mode ---
if (displayMode == 4) {
String ntpField = String(ntpServer2);
// These static variables will retain their values between calls to this block
static unsigned long lastNightscoutFetchTime = 0;
const unsigned long NIGHTSCOUT_FETCH_INTERVAL = 150000; // 2.5 minutes
static int currentGlucose = -1;
static String currentDirection = "?";
// Check if it's time to fetch new data or if we have no data yet
if (currentGlucose == -1 || millis() - lastNightscoutFetchTime >= NIGHTSCOUT_FETCH_INTERVAL) {
WiFiClientSecure client;
client.setInsecure();
HTTPClient https;
https.begin(client, ntpField);
https.setConnectTimeout(5000);
https.setTimeout(5000);
Serial.print("[HTTPS] Nightscout fetch initiated...\n");
int httpCode = https.GET();
if (httpCode == HTTP_CODE_OK) {
String payload = https.getString();
StaticJsonDocument<1024> doc;
DeserializationError error = deserializeJson(doc, payload);
if (!error && doc.is<JsonArray>() && doc.size() > 0) {
JsonObject firstReading = doc[0].as<JsonObject>();
currentGlucose = firstReading["glucose"] | firstReading["sgv"] | -1;
currentDirection = firstReading["direction"] | "?";
Serial.printf("Nightscout data fetched: mg/dL %d %s\n", currentGlucose, currentDirection.c_str());
} else {
Serial.println("Failed to parse Nightscout JSON");
}
} else {
Serial.printf("[HTTPS] GET failed, error: %s\n", https.errorToString(httpCode).c_str());
}
https.end();
lastNightscoutFetchTime = millis(); // Update the timestamp
}
// Display the data we have, which is now stored in static variables
if (currentGlucose != -1) {
char arrow;
if (currentDirection == "Flat") arrow = 139;
else if (currentDirection == "SingleUp") arrow = 134;
else if (currentDirection == "DoubleUp") arrow = 135;
else if (currentDirection == "SingleDown") arrow = 136;
else if (currentDirection == "DoubleDown") arrow = 137;
else if (currentDirection == "FortyFiveUp") arrow = 138;
else if (currentDirection == "FortyFiveDown") arrow = 140;
else arrow = '?';
String displayText = String(currentGlucose) + String(arrow);
P.setTextAlignment(PA_CENTER);
P.setCharSpacing(1);
P.print(displayText.c_str());
delay(weatherDuration);
advanceDisplayMode();
return;
} else {
// If no data is available after the first fetch attempt, show an error and advance
P.setTextAlignment(PA_CENTER);
P.setCharSpacing(0);
P.print(F("?)"));
delay(2000); // Wait 2 seconds before advancing
advanceDisplayMode();
return;
}
}
yield();
}

16
ESPTimeCast_ESP32/mfactoryfont.h
View File

@@ -44,7 +44,7 @@ MD_MAX72XX::fontType_t mFactory[] PROGMEM =
1, 1, // 38 - '&'
1, 6, // 39 - ''
1, 0, // 40 - '('
1, 0, // 41 - ')'
17, 130, 186, 198, 254, 134, 234, 134, 254, 250, 130, 250, 254, 134, 234, 134, 254, 124, // 41 - ')'
20, 250, 130, 250, 254, 130, 170, 186, 254, 130, 250, 226, 250, 134, 254, 130, 234, 234, 246, 254, 124, // 42 - '*'
1, 0, // 43 - '+'
3, 64, 0, 0, // 44 - ','
@@ -137,13 +137,13 @@ MD_MAX72XX::fontType_t mFactory[] PROGMEM =
0, // 131 - 'ƒ'
0, // 132 - '„'
0, // 133 - '…'
0, // 134 - '†'
0, // 135 - '‡'
0, // 136 - 'ˆ'
0, // 137 - '‰'
0, // 138 - 'Š'
0, // 139 - '‹'
0, // 140 - 'Œ'
3, 4, 126, 4, // 134 - '†'
7, 4, 126, 4, 0, 4, 126, 4, // 135 - '‡'
3, 32, 126, 32, // 136 - 'ˆ'
7, 32, 126, 32, 0, 32, 126, 32, // 137 - '‰'
8, 0, 64, 32, 16, 10, 6, 14, 0, // 138 - 'Š'
8, 0, 8, 8, 8, 8, 28, 8, 0, // 139 - '‹'
8, 0, 2, 4, 8, 80, 96, 112, 0, // 140 - 'Œ'
0, // 141 - ''
0, // 142 - 'Ž'
0, // 143 - ''

158
ESPTimeCast_ESP8266/ESPTimeCast_ESP8266.ino
View File

@@ -11,6 +11,7 @@
#include <DNSServer.h>
#include <sntp.h>
#include <time.h>
#include <WiFiClientSecure.h>
#include "mfactoryfont.h" // Custom font
#include "tz_lookup.h" // Timezone lookup, do not duplicate mapping here!
@@ -51,7 +52,7 @@ bool showDayOfWeek = true;
bool showHumidity = false;
bool colonBlinkEnabled = true;
char ntpServer1[64] = "pool.ntp.org";
char ntpServer2[64] = "time.nist.gov";
char ntpServer2[256] = "time.nist.gov";
// Dimming
bool dimmingEnabled = false;
@@ -1241,68 +1242,64 @@ void setup() {
void advanceDisplayMode() {
int oldMode = displayMode; // Store the old mode
int oldMode = displayMode;
String ntpField = String(ntpServer2);
bool nightscoutConfigured = ntpField.startsWith("https://");
// Determine the next display mode based on the current mode and conditions
if (displayMode == 0) { // Current mode is Clock
if (displayMode == 0) { // Clock -> ...
if (weatherAvailable && (strlen(openWeatherApiKey) == 32) && (strlen(openWeatherCity) > 0) && (strlen(openWeatherCountry) > 0)) {
displayMode = 1; // Clock -> Weather (if weather is available and configured)
displayMode = 1;
Serial.println(F("[DISPLAY] Switching to display mode: WEATHER (from Clock)"));
} else if (countdownEnabled && !countdownFinished && ntpSyncSuccessful) {
displayMode = 3; // Clock -> Countdown (if weather is NOT available/configured, but countdown is)
displayMode = 3;
Serial.println(F("[DISPLAY] Switching to display mode: COUNTDOWN (from Clock, weather skipped)"));
} else if (nightscoutConfigured) {
displayMode = 4; // Clock -> Nightscout (if weather & countdown are skipped)
Serial.println(F("[DISPLAY] Switching to display mode: NIGHTSCOUT (from Clock, weather & countdown skipped)"));
} else {
displayMode = 0; // Clock -> Clock (if neither weather nor countdown is available)
Serial.println(F("[DISPLAY] Staying in CLOCK (from Clock, no weather/countdown available)"));
displayMode = 0;
Serial.println(F("[DISPLAY] Staying in CLOCK (from Clock)"));
}
} else if (displayMode == 1) { // Current mode is Weather
} else if (displayMode == 1) { // Weather -> ...
if (showWeatherDescription && weatherAvailable && weatherDescription.length() > 0) {
displayMode = 2; // Weather -> Description (if description is enabled and available)
displayMode = 2;
Serial.println(F("[DISPLAY] Switching to display mode: DESCRIPTION (from Weather)"));
} else if (countdownEnabled && !countdownFinished && ntpSyncSuccessful) {
displayMode = 3; // Weather -> Countdown (if description is NOT enabled/available, but countdown is)
displayMode = 3;
Serial.println(F("[DISPLAY] Switching to display mode: COUNTDOWN (from Weather)"));
} else if (nightscoutConfigured) {
displayMode = 4; // Weather -> Nightscout (if description & countdown are skipped)
Serial.println(F("[DISPLAY] Switching to display mode: NIGHTSCOUT (from Weather, description & countdown skipped)"));
} else {
displayMode = 0; // Weather -> Clock (if neither description nor countdown is available)
displayMode = 0;
Serial.println(F("[DISPLAY] Switching to display mode: CLOCK (from Weather)"));
}
} else if (displayMode == 2) { // Current mode is Weather Description
} else if (displayMode == 2) { // Weather Description -> ...
if (countdownEnabled && !countdownFinished && ntpSyncSuccessful) {
displayMode = 3; // Description -> Countdown (if countdown is valid)
displayMode = 3;
Serial.println(F("[DISPLAY] Switching to display mode: COUNTDOWN (from Description)"));
} else if (nightscoutConfigured) {
displayMode = 4; // Description -> Nightscout (if countdown is skipped)
Serial.println(F("[DISPLAY] Switching to display mode: NIGHTSCOUT (from Description, countdown skipped)"));
} else {
displayMode = 0; // Description -> Clock (if countdown is NOT valid)
displayMode = 0;
Serial.println(F("[DISPLAY] Switching to display mode: CLOCK (from Description)"));
}
} else if (displayMode == 3) { // Current mode is Countdown
displayMode = 0; // Countdown -> Clock (always return to clock after countdown)
Serial.println(F("[DISPLAY] Switching to display mode: CLOCK (from Countdown)"));
} else if (displayMode == 3) { // Countdown -> Nightscout
if (nightscoutConfigured) {
displayMode = 4;
Serial.println(F("[DISPLAY] Switching to display mode: NIGHTSCOUT (from Countdown)"));
} else {
displayMode = 0;
Serial.println(F("[DISPLAY] Switching to display mode: CLOCK (from Countdown)"));
}
} else if (displayMode == 4) { // Nightscout -> Clock
displayMode = 0;
Serial.println(F("[DISPLAY] Switching to display mode: CLOCK (from Nightscout)"));
}
// --- Common cleanup/reset after mode switch ---
lastSwitch = millis(); // Reset the timer for the new mode's duration
// Reset variables specifically for the mode being ENTERED
if (displayMode == 3) { // Entering Countdown mode
countdownScrolling = false; // Ensure scrolling starts from beginning
countdownStaticStartTime = 0; // Reset static display timer
}
// Clear display and reset flags when EXITING specific modes
if (oldMode == 2 && displayMode != 2) { // Exiting Description Mode
P.displayClear();
descScrolling = false;
descStartTime = 0;
descScrollEndTime = 0;
Serial.println(F("[DISPLAY] Cleared display after exiting Description Mode."));
}
if (oldMode == 3 && displayMode != 3) { // Exiting Countdown Mode
P.displayClear();
countdownScrolling = false;
countdownStaticStartTime = 0;
countdownScrollEndTime = 0;
Serial.println(F("[DISPLAY] Cleared display after exiting Countdown Mode."));
}
// --- Common cleanup/reset logic remains the same ---
lastSwitch = millis();
}
//config save after countdown finishes
@@ -1962,5 +1959,82 @@ void loop() {
return;
} // End of if (displayMode == 3 && ...)
// --- NIGHTSCOUT Display Mode ---
if (displayMode == 4) {
String ntpField = String(ntpServer2);
// These static variables will retain their values between calls to this block
static unsigned long lastNightscoutFetchTime = 0;
const unsigned long NIGHTSCOUT_FETCH_INTERVAL = 150000; // 2.5 minutes
static int currentGlucose = -1;
static String currentDirection = "?";
// Check if it's time to fetch new data or if we have no data yet
if (currentGlucose == -1 || millis() - lastNightscoutFetchTime >= NIGHTSCOUT_FETCH_INTERVAL) {
WiFiClientSecure client;
client.setInsecure();
HTTPClient https;
https.begin(client, ntpField);
https.setTimeout(5000); // This sets both the connection and response timeout.
Serial.print("[HTTPS] Nightscout fetch initiated...\n");
int httpCode = https.GET();
if (httpCode == HTTP_CODE_OK) {
String payload = https.getString();
StaticJsonDocument<1024> doc;
DeserializationError error = deserializeJson(doc, payload);
if (!error && doc.is<JsonArray>() && doc.size() > 0) {
JsonObject firstReading = doc[0].as<JsonObject>();
currentGlucose = firstReading["glucose"] | firstReading["sgv"] | -1;
currentDirection = firstReading["direction"] | "?";
Serial.printf("Nightscout data fetched: mg/dL %d %s\n", currentGlucose, currentDirection.c_str());
} else {
Serial.println("Failed to parse Nightscout JSON");
}
} else {
Serial.printf("[HTTPS] GET failed, error: %s\n", https.errorToString(httpCode).c_str());
}
https.end();
lastNightscoutFetchTime = millis(); // Update the timestamp
}
// Display the data we have, which is now stored in static variables
if (currentGlucose != -1) {
char arrow;
if (currentDirection == "Flat") arrow = 139;
else if (currentDirection == "SingleUp") arrow = 134;
else if (currentDirection == "DoubleUp") arrow = 135;
else if (currentDirection == "SingleDown") arrow = 136;
else if (currentDirection == "DoubleDown") arrow = 137;
else if (currentDirection == "FortyFiveUp") arrow = 138;
else if (currentDirection == "FortyFiveDown") arrow = 140;
else arrow = '?';
String displayText = String(currentGlucose) + String(arrow);
P.setTextAlignment(PA_CENTER);
P.setCharSpacing(1);
P.print(displayText.c_str());
delay(weatherDuration);
advanceDisplayMode();
return;
} else {
// If no data is available after the first fetch attempt, show an error and advance
P.setTextAlignment(PA_CENTER);
P.setCharSpacing(0);
P.print(F("?)"));
delay(2000); // Wait 2 seconds before advancing
advanceDisplayMode();
return;
}
}
yield();
}

16
ESPTimeCast_ESP8266/mfactoryfont.h
View File

@@ -44,7 +44,7 @@ MD_MAX72XX::fontType_t mFactory[] PROGMEM =
1, 1, // 38 - '&'
1, 6, // 39 - ''
1, 0, // 40 - '('
1, 0, // 41 - ')'
17, 130, 186, 198, 254, 134, 234, 134, 254, 250, 130, 250, 254, 134, 234, 134, 254, 124, // 41 - ')'
20, 250, 130, 250, 254, 130, 170, 186, 254, 130, 250, 226, 250, 134, 254, 130, 234, 234, 246, 254, 124, // 42 - '*'
1, 0, // 43 - '+'
3, 64, 0, 0, // 44 - ','
@@ -137,13 +137,13 @@ MD_MAX72XX::fontType_t mFactory[] PROGMEM =
0, // 131 - 'ƒ'
0, // 132 - '„'
0, // 133 - '…'
0, // 134 - '†'
0, // 135 - '‡'
0, // 136 - 'ˆ'
0, // 137 - '‰'
0, // 138 - 'Š'
0, // 139 - '‹'
0, // 140 - 'Œ'
3, 4, 126, 4, // 134 - '†'
7, 4, 126, 4, 0, 4, 126, 4, // 135 - '‡'
3, 32, 126, 32, // 136 - 'ˆ'
7, 32, 126, 32, 0, 32, 126, 32, // 137 - '‰'
8, 0, 64, 32, 16, 10, 6, 14, 0, // 138 - 'Š'
8, 0, 8, 8, 8, 8, 28, 8, 0, // 139 - '‹'
8, 0, 2, 4, 8, 80, 96, 112, 0, // 140 - 'Œ'
0, // 141 - ''
0, // 142 - 'Ž'
0, // 143 - ''