SJ_PRIVATE enum v7_err GPIO_setISR(struct v7 *v7, v7_val_t *res) {
enum v7_err rcode = V7_OK;
v7_val_t pinv = v7_arg(v7, 0);
v7_val_t typev = v7_arg(v7, 1);
v7_val_t cb = v7_arg(v7, 2);
v7_val_t current_cb;
char prop_name[15];
int pin, type, len, has_isr, new_isr_provided;
if (!v7_is_number(pinv) || !v7_is_number(typev)) {
printf("Invalid arguments\n");
*res = v7_mk_boolean(v7, 0);
goto clean;
}
pin = v7_get_double(v7, pinv);
type = v7_get_double(v7, typev);
len = snprintf(prop_name, sizeof(prop_name), "_ih_%d", (int) pin);
current_cb = v7_get(v7, v7_get_global(v7), prop_name, len);
has_isr = v7_is_callable(v7, current_cb);
new_isr_provided = v7_is_callable(v7, cb);
if (!has_isr && !new_isr_provided) {
printf("Missing callback\n");
*res = v7_mk_boolean(v7, 0);
goto clean;
};
if (has_isr && new_isr_provided && current_cb != cb) {
printf("Only one interruption handler is allowed for pin\n");
*res = v7_mk_boolean(v7, 0);
goto clean;
}
if (type == 0 && has_isr) {
v7_set(v7, v7_get_global(v7), prop_name, len, V7_UNDEFINED);
} else if (!has_isr && new_isr_provided) {
v7_set(v7, v7_get_global(v7), prop_name, len, cb);
}
if (type != 0 && !s_gpio_intr_installed) {
sj_gpio_intr_init(gpio_intr_handler_proxy, v7);
s_isr_cb_proxy_v = v7_mk_cfunction(isr_cb_proxy);
v7_own(v7, &s_isr_cb_proxy_v);
s_gpio_intr_installed = 1;
}
*res =
v7_mk_boolean(v7, sj_gpio_intr_set(pin, (enum gpio_int_mode) type) == 0);
goto clean;
clean:
return rcode;
}
V7_PRIVATE
v7_val_t mk_cfunction_obj(struct v7 *v7, v7_cfunction_t *f, int num_args) {
val_t obj = mk_object(v7, v7->vals.function_prototype);
struct gc_tmp_frame tf = new_tmp_frame(v7);
tmp_stack_push(&tf, &obj);
v7_def(v7, obj, "", 0, _V7_DESC_HIDDEN(1), v7_mk_cfunction(f));
if (num_args >= 0) {
v7_def(v7, obj, "length", 6, (V7_DESC_ENUMERABLE(0) | V7_DESC_WRITABLE(0) |
V7_DESC_CONFIGURABLE(0)),
v7_mk_number(v7, num_args));
}
tmp_frame_cleanup(&tf);
return obj;
}
