Add 'raw_prbs' handler to transmit a PRBS15 sequence
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d375bee190
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2
Makefile
2
Makefile
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@ -12,7 +12,7 @@ clean:
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%.o: %.c
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$(CC) $(CFLAGS) -o $@ -c $^
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capi-test: capi.o capiconn.o bchan.o hdlr_raw_loop.o
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capi-test: capi.o capiconn.o bchan.o hdlr_raw_loop.o hdlr_raw_prbs.o
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$(CC) $(LDFLAGS) -o $@ $^ $(LIBS)
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1
capi.c
1
capi.c
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@ -305,6 +305,7 @@ int main(int argc, char **argv)
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osmo_init_logging2(ctx, &log_info);
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capi_init(ctx);
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bchan_route_add(-1, "142", "raw_prbs");
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bchan_route_add(-1, NULL, "raw_loop");
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while (1) {
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@ -0,0 +1,61 @@
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#include <osmocom/core/utils.h>
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#include <osmocom/core/prbs.h>
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#include "bchan.h"
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#include "errno.h"
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struct raw_prbs_priv {
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struct osmo_prbs_state prbs;
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};
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static int raw_prbs_init(struct call_state *cst)
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{
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struct raw_prbs_priv *rpp;
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rpp = cst->priv = talloc_zero(cst, struct raw_prbs_priv);
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if (!rpp)
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return -ENOMEM;
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osmo_prbs_state_init(&rpp->prbs, &osmo_prbs15);
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return 0;
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}
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static void raw_prbs_rx(struct call_state *cst, const uint8_t *data, uint8_t len)
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{
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struct raw_prbs_priv *rpp = cst->priv;
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uint8_t tx_ubit[len*8];
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uint8_t tx_pbit[len];
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/* TODO: process what we received */
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/* generate respective number of PRBS bits and transmit them */
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osmo_prbs_get_ubits(tx_ubit, len, &rpp->prbs);
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osmo_ubit2pbit(tx_pbit, tx_ubit, len*8);
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bchan_call_tx(cst, tx_pbit, len);
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}
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static void raw_prbs_fini(struct call_state *cst)
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{
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struct raw_prbs_priv *rpp = cst->priv;
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talloc_free(rpp);
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cst->priv = NULL;
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}
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static struct bchan_handler bch_raw_prbs = {
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.name = "raw_prbs",
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.cfg = {
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.proto = { 1, 1, 0 },
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.ncpi = NULL,
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.max_b_data_blocks = 10,
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.max_b_data_len = 32,
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},
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.ops = {
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.init = raw_prbs_init,
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.rx_data = raw_prbs_rx,
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.fini = raw_prbs_fini,
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},
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};
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static __attribute__((constructor)) void hdlr_raw_prbs_init(void)
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{
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bchan_handler_register(&bch_raw_prbs);
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}
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