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Fix Connection timeout from issue #367 #368

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Fix Connection timeout from issue #367 #368

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51 changes: 51 additions & 0 deletions src/modbus-rtu.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1104,6 +1104,57 @@ int modbus_rtu_set_rts_delay(modbus_t *ctx, int us)
}
}


int modbus_rtu_get_onebyte_timey(modbus_t *ctx)
{
if (ctx == NULL) {
errno = EINVAL;
return -1;
}

if (ctx->backend->backend_type == _MODBUS_BACKEND_TYPE_RTU) {
#if HAVE_DECL_TIOCM_RTS
modbus_rtu_t *ctx_rtu;
ctx_rtu = (modbus_rtu_t *)ctx->backend_data;
return ctx_rtu->onebyte_time;
#else
if (ctx->debug) {
fprintf(stderr, "This function isn't supported on your platform\n");
}
errno = ENOTSUP;
return -1;
#endif
} else {
errno = EINVAL;
return -1;
}
}

int modbus_rtu_set_onebyte_time(modbus_t *ctx, int us){
if (ctx == NULL || us < 0) {
errno = EINVAL;
return -1;
}

if (ctx->backend->backend_type == _MODBUS_BACKEND_TYPE_RTU) {
#if HAVE_DECL_TIOCM_RTS
modbus_rtu_t *ctx_rtu;
ctx_rtu = (modbus_rtu_t *)ctx->backend_data;
ctx_rtu->onebyte_time = us;
return 0;
#else
if (ctx->debug) {
fprintf(stderr, "This function isn't supported on your platform\n");
}
errno = ENOTSUP;
return -1;
#endif
} else {
errno = EINVAL;
return -1;
}
}

static void _modbus_rtu_close(modbus_t *ctx)
{
/* Restore line settings and close file descriptor in RTU mode */
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3 changes: 3 additions & 0 deletions src/modbus-rtu.h
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,9 @@ MODBUS_API int modbus_rtu_set_custom_rts(modbus_t *ctx, void (*set_rts) (modbus_
MODBUS_API int modbus_rtu_set_rts_delay(modbus_t *ctx, int us);
MODBUS_API int modbus_rtu_get_rts_delay(modbus_t *ctx);

MODBUS_API int modbus_rtu_set_onebyte_time(modbus_t *ctx, int us);
MODBUS_API int modbus_rtu_get_onebyte_time(modbus_t *ctx);

MODBUS_END_DECLS

#endif /* MODBUS_RTU_H */