cb78ecd0e2
Relies on global flags set when the user ISR is executing. Unclear if this fixes any bugs as ISR code may not have been calling into LWIP, but the previous implementation was broken.
45 lines
899 B
C
45 lines
899 B
C
/* ESP8266 Xtensa interrupt management functions
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*
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*
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* Part of esp-open-rtos
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* Copyright (C) 2015 Angus Gratton
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* BSD Licensed as described in the file LICENSE
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*/
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#include <esp/interrupts.h>
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_xt_isr isr[16];
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bool esp_in_isr;
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void IRAM _xt_isr_attach(uint8_t i, _xt_isr func)
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{
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isr[i] = func;
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}
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/* Generic ISR handler.
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Handles all flags set for interrupts in 'intset'.
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*/
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uint16_t IRAM _xt_isr_handler(uint16_t intset)
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{
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esp_in_isr = true;
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/* WDT has highest priority (occasional WDT resets otherwise) */
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if(intset & BIT(INUM_WDT)) {
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_xt_clear_ints(BIT(INUM_WDT));
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isr[INUM_WDT]();
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intset -= BIT(INUM_WDT);
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}
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while(intset) {
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uint8_t index = __builtin_ffs(intset) - 1;
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uint16_t mask = BIT(index);
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_xt_clear_ints(mask);
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isr[index]();
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intset -= mask;
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}
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esp_in_isr = false;
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return 0;
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}
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