size_t asn1_decode(uint8_t *asn1_data, size_t asn1_len, asn1_obj_t *objs, size_t iter_count){
	uint8_t *asn1_current = asn1_data;			// set current to start of data to decode
	uint8_t *asn1_end = asn1_current + asn1_len;
	size_t i;
	for(i = 0; i < iter_count; i++){		// loop until iter count hit. Break manually if done.
		asn1_obj_t *node_o = &objs[i];
		node_o->tag = *asn1_current++;		// get numeric tag id
		if((*asn1_current)>>7 & 1){			// if bit 7 of byte is set, this is a size word length
			uint8_t size_len = (*asn1_current++) & 0x7f;
			if(size_len > 3) continue;			// due to device limits, seq len limited to u24.
			for(int j = 0; j < size_len; j++){
				node_o->len <<= 8;
				node_o->len += *(asn1_current+j);
			}
			asn1_current += size_len;
		}
		else									// else, this is a size byte
			node_o->len = *asn1_current++;
		node_o->data = asn1_current;
		asn1_current += node_o->len;
		if(asn1_current >= asn1_end) break;
	}
	return i;
}