CAN327_SIZE_RXBUF
memmove(&elm->rxbuf[0], &elm->rxbuf[i], CAN327_SIZE_RXBUF - i);
if (len == CAN327_SIZE_RXBUF) {
u8 rxbuf[CAN327_SIZE_RXBUF];
if (elm->rxfill >= CAN327_SIZE_RXBUF) {