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Add esp_intr_set_in_iram

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A function to change "in IRAM" status for an existing interrupt handle, without going through free/allocate of the interrupt.
mOS HW timer implementation requires this to make HW timers safe to re-set from an IRAM ISR.
This commit is contained in:
Deomid Ryabkov
2017-11-09 14:21:39 +03:00
parent 582b731c23
commit e3282a0cac
2 changed files with 34 additions and 2 deletions
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19
components/esp32/intr_alloc.c
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@@ -685,6 +685,25 @@ esp_err_t esp_intr_alloc(int source, int flags, intr_handler_t handler, void *ar
return esp_intr_alloc_intrstatus(source, flags, 0, 0, handler, arg, ret_handle);
}
esp_err_t IRAM_ATTR esp_intr_set_in_iram(intr_handle_t handle, bool is_in_iram)
{
if (!handle) return ESP_ERR_INVALID_ARG;
vector_desc_t *vd = handle->vector_desc;
if (vd->flags & VECDESC_FL_SHARED) {
return ESP_ERR_INVALID_ARG;
}
portENTER_CRITICAL(&spinlock);
uint32_t mask = (1 << vd->intno);
if (is_in_iram) {
vd->flags |= VECDESC_FL_INIRAM;
non_iram_int_mask[vd->cpu] &= ~mask;
} else {
vd->flags &= ~VECDESC_FL_INIRAM;
non_iram_int_mask[vd->cpu] |= mask;
}
portEXIT_CRITICAL(&spinlock);
return ESP_OK;
}
esp_err_t esp_intr_free(intr_handle_t handle)
{