diff options
Diffstat (limited to 'src/gsm/rsl.c')
| -rw-r--r-- | src/gsm/rsl.c | 40 |
1 files changed, 27 insertions, 13 deletions
diff --git a/src/gsm/rsl.c b/src/gsm/rsl.c index e610ebf7..7bc60027 100644 --- a/src/gsm/rsl.c +++ b/src/gsm/rsl.c @@ -215,33 +215,47 @@ int rsl_dec_chan_nr(uint8_t chan_nr, uint8_t *type, uint8_t *subch, uint8_t *tim return 0; } -/*! Get human-readable string for RSL channel number */ -const char *rsl_chan_nr_str(uint8_t chan_nr) +/*! Get human-readable string for RSL channel number, in caller-provided buffer. + * \param[out] buf caller-provided output buffer + * \param[in] buf_len size of buf in bytes + * \param[in] chan_nr channel number to be stringified + * \returns buf with string + */ +char *rsl_chan_nr_str_buf(char *buf, size_t buf_len, uint8_t chan_nr) { - static char str[20]; int ts = chan_nr & 7; uint8_t cbits = chan_nr >> 3; if (cbits == 0x01) - sprintf(str, "TCH/F on TS%d", ts); + snprintf(buf, buf_len, "TCH/F on TS%d", ts); else if ((cbits & 0x1e) == 0x02) - sprintf(str, "TCH/H(%u) on TS%d", cbits & 0x01, ts); + snprintf(buf, buf_len, "TCH/H(%u) on TS%d", cbits & 0x01, ts); else if ((cbits & 0x1c) == 0x04) - sprintf(str, "SDCCH/4(%u) on TS%d", cbits & 0x03, ts); + snprintf(buf, buf_len, "SDCCH/4(%u) on TS%d", cbits & 0x03, ts); else if ((cbits & 0x18) == 0x08) - sprintf(str, "SDCCH/8(%u) on TS%d", cbits & 0x07, ts); + snprintf(buf, buf_len, "SDCCH/8(%u) on TS%d", cbits & 0x07, ts); else if (cbits == 0x10) - sprintf(str, "BCCH on TS%d", ts); + snprintf(buf, buf_len, "BCCH on TS%d", ts); else if (cbits == 0x11) - sprintf(str, "RACH on TS%d", ts); + snprintf(buf, buf_len, "RACH on TS%d", ts); else if (cbits == 0x12) - sprintf(str, "PCH/AGCH on TS%d", ts); + snprintf(buf, buf_len, "PCH/AGCH on TS%d", ts); else if (cbits == 0x18) - sprintf(str, "PDCH on TS%d", ts); + snprintf(buf, buf_len, "PDCH on TS%d", ts); else - sprintf(str, "UNKNOWN on TS%d", ts); + snprintf(buf, buf_len, "UNKNOWN on TS%d", ts); + + return buf; +} - return str; +/*! Get human-readable string for RSL channel number, in static buffer. + * \param[in] chan_nr channel number to be stringified + * \returns buf with string + */ +const char *rsl_chan_nr_str(uint8_t chan_nr) +{ + static char str[20]; + return rsl_chan_nr_str_buf(str, sizeof(str), chan_nr); } static const struct value_string rsl_err_vals[] = { |