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Fixed incorrect T.30 CTC messages. Fixed reseting of the CRC generator

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in the HDLC tx code
This commit is contained in:
Steve Underwood 2014-06-11 01:49:29 +08:00
parent 0685027bd8
commit 10647be5a0
2 changed files with 11 additions and 3 deletions
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5
libs/spandsp/src/hdlc.c
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@ -613,7 +613,10 @@ SPAN_DECLARE(int) hdlc_tx_restart(hdlc_tx_state_t *s)
s->report_flag_underflow = false; s->report_flag_underflow = false;
s->len = 0; s->len = 0;
s->pos = 0; s->pos = 0;
s->crc = 0; if (s->crc_bytes == 2)
s->crc = 0xFFFF;
else
s->crc = 0xFFFFFFFF;
s->byte = 0; s->byte = 0;
s->bits = 0; s->bits = 0;
s->tx_end = false; s->tx_end = false;

9
libs/spandsp/src/t30.c
View File

@ -3070,7 +3070,7 @@ static void process_rx_ppr(t30_state_t *s, const uint8_t *msg, int len)
int i; int i;
int j; int j;
int frame_no; int frame_no;
uint8_t frame[4]; uint8_t frame[5];
if (len != 3 + 256/8) if (len != 3 + 256/8)
{ {
@ -3120,7 +3120,12 @@ static void process_rx_ppr(t30_state_t *s, const uint8_t *msg, int len)
s->ecm_progress = 0; s->ecm_progress = 0;
queue_phase(s, T30_PHASE_D_TX); queue_phase(s, T30_PHASE_D_TX);
set_state(s, T30_STATE_IV_CTC); set_state(s, T30_STATE_IV_CTC);
send_simple_frame(s, T30_CTC); frame[0] = ADDRESS_FIELD;
frame[1] = CONTROL_FIELD_FINAL_FRAME;
frame[2] = (uint8_t) (T30_CTC | s->dis_received);
frame[3] = 0;
frame[4] = fallback_sequence[s->current_fallback].dcs_code;
send_frame(s, frame, 5);
} }
else else
{ {