ESP32 cansat next - Revision history

Mol: /* snprintf */

2025-04-04T12:30:10Z

snprintf

← Older revision		Revision as of 15:30, 4 April 2025
Line 17:		Line 17:
	</syntaxhighlight>		</syntaxhighlight>

			To have more JSON data structure use
			<syntaxhighlight lang="C">
			snprintf(report, sizeof(report), "{\"time\": %d, "
			"\"ax\": %4.2f, \"ay\": %4.2f, \"az\": %4.2f, \"temp\": %4.2f, \"p\": %4.2f, "
			"\"lat\": %8.7f, \"long\": %8.7f, \"alt\": %4.2f, \"speed\": %4.2f, "
			"\"so2\": %4.2f },",
			treset,
			ax, ay, az, t, p,
			lat, lng, alt, speed,
			so2 );
			</syntaxhighlight>
			but there is a small problem with array of JSON.

	== Radio ==		== Radio ==

2025-03-24T17:00:06Z

Print the data

← Older revision		Revision as of 20:00, 24 March 2025
Line 117:		Line 117:
	char report[128];		char report[128];
	memset(report, 0, sizeof(report));		memset(report, 0, sizeof(report));
	~~//snprintf(report, sizeof(report), "%8.1f, %4.2f, %4.2f, %4.2f, %4.2f, %4.2f, %4.2f, %8.7f, %8.7f, %4.2f, %4.2f",~~
	~~// treset, ax, ay, az, t, p, lat, lng, alt, speed, so2);~~

	snprintf(report, sizeof(report), "%d, "		snprintf(report, sizeof(report), "%d, "
	"%4.2f, %4.2f, %4.2f, %4.2f, %4.2f, "		"%4.2f, %4.2f, %4.2f, %4.2f, %4.2f, "

2025-03-24T16:59:45Z

Print the data

← Older revision		Revision as of 19:59, 24 March 2025
Line 114:		Line 114:

	<syntaxhighlight lang="C">		<syntaxhighlight lang="C">
			//Printing
			char report[128];
			memset(report, 0, sizeof(report));
			//snprintf(report, sizeof(report), "%8.1f, %4.2f, %4.2f, %4.2f, %4.2f, %4.2f, %4.2f, %8.7f, %8.7f, %4.2f, %4.2f",
			// treset, ax, ay, az, t, p, lat, lng, alt, speed, so2);

			snprintf(report, sizeof(report), "%d, "
			"%4.2f, %4.2f, %4.2f, %4.2f, %4.2f, "
			"%8.7f, %8.7f, %4.2f, %4.2f, "
			"%4.2f",
			treset,
			ax, ay, az, t, p,
			lat, lng, alt, speed,
			so2 );

			// Print the data to Serial
			Serial.println( report );

			// Save the data to SD card
			appendFile(filepath, report);
			appendFile(filepath, "\n");

			// Transmit the data via radio
			if (treset - tradio > 5000){
			tradio = millis();
			//sendData( report );
			Serial.println( "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA" );
			}
			}
	</syntaxhighlight>		</syntaxhighlight>

2025-03-24T16:59:22Z

Read data

← Older revision		Revision as of 19:59, 24 March 2025
Line 107:		Line 107:
	}		}

			</syntaxhighlight>

			=== Print the data ===

			Again, in the loop() method include the printing methods.

			<syntaxhighlight lang="C">
	</syntaxhighlight>		</syntaxhighlight>

2025-03-24T16:58:40Z

Initialize

@@ Line 77: / Line 77: @@
    CanSatInit();
+}
 </syntaxhighlight>

2025-03-24T16:57:31Z

Declare

@@ Line 60: / Line 60: @@
 float speed = 0;
 float so2;  // Connect to pin 33
 </syntaxhighlight>

2025-03-24T16:55:52Z

SD Card

@@ Line 31: / Line 31: @@
    appendFile(filepath, data);
    appendFile(filepath, "\n");
 </syntaxhighlight>

2025-03-23T15:34:05Z

SD Card

← Older revision		Revision as of 18:34, 23 March 2025
Line 23:		Line 23:

	== SD Card ==		== SD Card ==

			First, open the file
			<code>const String filepath = "/filename.csv";</code>
			and then append the data and linebreak

			<syntaxhighlight lang="C">
			appendFile(filepath, data);
			appendFile(filepath, "\n");
			</syntaxhighlight>

2025-03-23T15:32:00Z

Radio

← Older revision		Revision as of 18:32, 23 March 2025
Line 19:		Line 19:

	== Radio ==		== Radio ==

			To send strings, use <code>sendData( str );</code> command.

	== SD Card ==		== SD Card ==

2025-03-23T15:31:14Z

snprintf