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fix for esp8266 and esp32 when LMIC_USE_INTERRUPTS is used #556

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fix for esp8266 and esp32 when LMIC_USE_INTERRUPTS is used #556

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3 changes: 3 additions & 0 deletions src/hal/hal.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -109,14 +109,17 @@ static void hal_io_check() {
// Interrupt handlers
static ostime_t interrupt_time[NUM_DIO] = {0};

LMIC_ISR_ATTR
static void hal_isrPin0() {
ostime_t now = os_getTime();
interrupt_time[0] = now ? now : 1;
}
LMIC_ISR_ATTR
static void hal_isrPin1() {
ostime_t now = os_getTime();
interrupt_time[1] = now ? now : 1;
}
LMIC_ISR_ATTR
static void hal_isrPin2() {
ostime_t now = os_getTime();
interrupt_time[2] = now ? now : 1;
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7 changes: 7 additions & 0 deletions src/lmic/config.h
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Original file line number Diff line number Diff line change
Expand Up @@ -212,4 +212,11 @@
# define LMIC_ENABLE_arbitrary_clock_error 0 /* PARAM */
#endif

#if defined(ESP8266) || defined(ESP32)
// functions called from an interrupt context need this attribute
#define LMIC_ISR_ATTR ICACHE_RAM_ATTR
#else
#define LMIC_ISR_ATTR
#endif

#endif // _lmic_config_h_