PX_BUF_COUNT
volatile uint32_t *px_qpoll[PX_BUF_COUNT];
for (i = 0; i < PX_BUF_COUNT; i++) {
sxi->sxi_buf_pktcnt = PX_BUF_COUNT;
STIC_XCOMM_SIZE + STIC_PACKET_SIZE * PX_BUF_COUNT;
#define PX_BUF_INC(x) ((x + 1) & (PX_BUF_COUNT - 1))
(STIC_PACKET_SIZE * PX_BUF_COUNT + STIC_IMGBUF_SIZE*2 + STIC_XCOMM_SIZE)