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* Update to WDT library Adds the capability of using the HFRC oscillator for WDT. * Update keywords.txt Lgtwdt keyword added * Update wdt_interrupt_HF.ino Line contain "LGTWDT Lgtwdt;" deleted because it is integrated to file WDT.h * Update WDT.h Defining name Lgtwdt form class LGTWDT integrated to WHT.h Users do not need to write it into their own program. * Update keywords.txt --------- Co-authored-by: LaZsolt <[email protected]>
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lgt8f/libraries/WDT/examples/wdt_interrupt_HF/wdt_interrupt_HF.ino
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,54 @@ | ||
| /******************************************************** | ||
| * This example shows how the watchdog interrupt works. * | ||
| * About every 512ms there will be a wdt interrupt. * | ||
| * If you uncomment the line containing wdt_reset() the * | ||
| * sketch will not detect wdt interrupt signal. * | ||
| * * | ||
| * Updated on August 2023 by gpb01 to user the HFRC * | ||
| * clock on WDT. * | ||
| ******************************************************** | ||
| * When writing an Interrupt Service Routine (ISR): * | ||
| * Keep short,don't use delay(), don't do serial prints * | ||
| * Make variables shared with the main code volatile * | ||
| * Read this: https://gammon.com.au/interrupts * | ||
| ********************************************************/ | ||
| #include <WDT.h> | ||
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| volatile boolean isrflag; | ||
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| void setup() { | ||
| pinMode(LED_BUILTIN, OUTPUT); | ||
| digitalWrite(LED_BUILTIN, LOW); | ||
| Serial.begin(19200); | ||
| Serial.println(F("Skech started.")); | ||
| isrflag = false; | ||
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| Lgtwdt.begin(WTOH_32MHZ); // Select HFRC oscillator for WDT | ||
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| wdt_ienable(WTOH_512MS); | ||
| } | ||
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| void loop() { | ||
| int n = 0; | ||
| do { | ||
| Serial.print(F(" Elapsed step: ")); | ||
| Serial.println(n); | ||
| delay(128); | ||
| if (digitalRead(LED_BUILTIN)) | ||
| digitalWrite(LED_BUILTIN, LOW ); | ||
| else | ||
| digitalWrite(LED_BUILTIN, HIGH); | ||
| if (isrflag) { | ||
| Serial.println(F("--There was a wdt interrupt.--")); | ||
| isrflag = false; | ||
| wdt_ienable(WTOH_512MS); | ||
| } | ||
| //wdt_reset(); | ||
| } while( n++ < 1000 ); | ||
| } | ||
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| ISR (WDT_vect) | ||
| { | ||
| isrflag = true; | ||
| wdt_reset(); | ||
| } |
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