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Merge branch 'master' of https://github.com/3cky/mbusd.git

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This commit is contained in:
Victor Antonovich 2018-04-26 13:55:47 +03:00
commit 77f1ccd345
2 changed files with 53 additions and 8 deletions
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57
src/conn.c
View File

@ -317,7 +317,9 @@ conn_loop(void)
struct timeval ts, tts, t_out;
unsigned long tval, tout_sec, tout = 0ul;
conn_t *curconn = NULL;
char t[256], v[8];
#ifdef DEBUG
char t[1025], v[5];
#endif
while (TRUE)
{
@ -436,13 +438,29 @@ conn_loop(void)
else
{ /* some data received */
#ifdef DEBUG
logw(5, "tty: response read (total %d bytes, offset %d bytes)", tty.ptrbuf, tty.rxoffset);
logw(5, "tty: response read (total %d bytes, offset %d bytes)", tty.ptrbuf, tty.rxoffset);
#endif
/* Check if there is enough data for an error response
and if the error flag is set in the function code */
if ((tty.ptrbuf >= MB_ERR_LEN) &&
(tty.rxbuf[tty.rxoffset+TTY_FCODE_IDX] & TTY_ERR_MASK))
{
/* This is an error response, set the length to
5 (1 + 1 + 1 + 2) = Slave Address + Function Code + Error Code + CRC */
tty.ptrbuf = MB_ERR_LEN;
}
if (tty.ptrbuf >= MB_MIN_LEN &&
modbus_crc_correct(tty.rxbuf + tty.rxoffset, tty.ptrbuf - tty.rxoffset))
{ /* received response is correct, make OpenMODBUS response */
#ifdef DEBUG
logw(5, "tty: response is correct");
// Optionally print the correct packet data
t[0] = '\0';
for (i = 0; i < tty.ptrbuf; i++) {
sprintf(v, "[%2.2x]", tty.rxbuf[i]);
strncat(t, v, 1024-strlen(t));
}
logw(9, "tty: response: %s", t);
#endif
(void)memcpy((void *)(actconn->buf + HDRSIZE),
(void *)(tty.rxbuf + tty.rxoffset), tty.ptrbuf - CRCSIZE - tty.rxoffset);
@ -454,10 +472,10 @@ conn_loop(void)
#ifdef DEBUG
t[0] = '\0';
for (i = 0; i < tty.ptrbuf; i++) {
sprintf(v,"[%2.2x]", tty.rxbuf[i]);
strncat(t, v, 256);
sprintf(v, "[%2.2x]", tty.rxbuf[i]);
strncat(t, v, 1024-strlen(t));
}
logw(5, "tty: response is incorrect (%s)", t);
logw(5, "tty: response is incorrect: %s", t);
#endif
if (!tty.trynum) {
modbus_ex_write(actconn->buf, MB_EX_CRC);
@ -661,11 +679,26 @@ conn_loop(void)
#ifdef DEBUG
logw(5, "tty: response read (total %d bytes, offset %d bytes)", tty.ptrbuf, tty.rxoffset);
#endif
/* Check if there is enough data for an error response
and if the error flag is set in the function code */
if ((tty.ptrbuf >= MB_ERR_LEN) && (tty.rxbuf[tty.rxoffset+TTY_FCODE_IDX] & TTY_ERR_MASK))
{
/* This is an error response, set the length to
5 (1 + 1 + 1 + 2) = Slave Address + Function Code + Error Code + CRC */
tty.ptrbuf = MB_ERR_LEN;
}
if (tty.ptrbuf >= MB_MIN_LEN &&
modbus_crc_correct(tty.rxbuf + tty.rxoffset, tty.ptrbuf - tty.rxoffset))
{ /* received response is correct, make OpenMODBUS response */
#ifdef DEBUG
logw(5, "tty: response is correct");
// Optionally print the correct packet data
t[0] = '\0';
for (i = 0; i < tty.ptrbuf; i++) {
sprintf(v, "[%2.2x]", tty.rxbuf[i]);
strncat(t, v, 1024-strlen(t));
}
logw(9, "tty: response: %s", t);
#endif
(void)memcpy((void *)(actconn->buf + HDRSIZE),
(void *)(tty.rxbuf + tty.rxoffset), tty.ptrbuf - CRCSIZE - tty.rxoffset);
@ -679,10 +712,10 @@ conn_loop(void)
#ifdef DEBUG
t[0] = '\0';
for (i = 0; i < tty.ptrbuf; i++) {
sprintf(v,"[%2.2x]", tty.rxbuf[i]);
strncat(t, v, 256);
sprintf(v, "[%2.2x]", tty.rxbuf[i]);
strncat(t, v, 1024-strlen(t));
}
logw(5, "tty: response is incorrect (%s)", t);
logw(5, "tty: response is incorrect: %s", t);
#endif
if (!tty.trynum) {
logw(3, "tty: response is incorrect (%d of %d bytes, offset %d), return error", tty.ptrbuf,
@ -797,6 +830,14 @@ conn_loop(void)
if (curconn->state == CONN_RQST_TAIL)
if (curconn->ctr >= HDRSIZE + MB_FRAME(curconn->buf, MB_LENGTH_L))
{ /* ### frame received completely ### */
#ifdef DEBUG
t[0] = '\0';
for (i = MB_UNIT_ID; i < curconn->ctr; i++) {
sprintf(v, "[%2.2x]", curconn->buf[i]);
strncat(t, v, 1024-strlen(t));
}
logw(5, "conn[%s]: request: %s", inet_ntoa(curconn->sockaddr.sin_addr), t);
#endif
state_conn_set(curconn, CONN_TTY);
if (tty.state == TTY_READY)
conn_tty_start(&tty, curconn);

4
src/modbus.h
View File

@ -47,6 +47,7 @@
*/
#define MB_EX_LEN 3
#define MB_MIN_LEN 4
#define MB_ERR_LEN 5
#define MB_MAX_LEN 256
/*
@ -85,6 +86,9 @@
#define MB_DATA_NVAL_L 11 /* MODBUS data: number of values low byte */
#define MB_DATA_NBYTES 12 /* MODBUS data: number of bytes to follow (fc 15,16) */
#define TTY_FCODE_IDX 1 /* The index of the function code in a RTU packet */
#define TTY_ERR_MASK 0x80 /* The MSB of the response function code indicates an error response */
/*
* Exception codes
*/