Files
bacnet_stack/ports/bsd/rs485.h
T
Kari Argillander a2f1d6959d Make most of functions const correct (#714)
* Make most of the functions const correct

Used clang-tidy and sonarlint to help find places where const could
pretty easily applied. Also lot of hand work.

This commit does not yet touch handlers and typedefs of those.

* Fix Arduino uno handler_who_is() has extra parenthesis

For some reason there is extra parenthesis. Remove it this is more
likely buildable.

* Bugfix/bacapp: Fix uninitilized array_index

We have changed bacapp_snprintf_value() to be const correct. After that
we got

```
/home/runner/work/bacnet-stack/bacnet-stack/src/bacnet/bacapp.c:3183:27: warning: 4th function call argument is an uninitialized value [core.CallAndMessage]
                ret_val = bacapp_snprintf_weeklyschedule(
                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
```

So analyzer could now spot that we do not actually initilize array_index
at all. Fix this by setting array_index to zero. Note that I actually do
not know if zeroing is right thing to do here. I choose zero as if this
has worked before it is most likely that it will work with zero value.

* cmake: Add and ignore Wwrite-strings compiler option

Wwrite-strings helps find places where const correctness is broken.

Example it will warn about these

```C

void func1(char* str);

func("test") /* "test" is const so we should not pass it to func1().

char* func2()
{
  return "test"; /* func2() should return const char*.
}
```

We still need to ignore it as not all are fixed but let's add it already
so we remember that it should be opened at some point.

---------

Co-authored-by: Kari Argillander <kari.argillander@fidelix.com>
2024-08-29 14:08:02 -05:00

55 lines
1.4 KiB
C

/**
* @file port/bsd/rs485.h
* @brief Provides BSD/Darwin(macOS) specific functions for RS-485 serial
* operation
* @author Steve Karg <skarg@users.sourceforge.net>
* @author Michael O'Neill <em.pee.oh@gmail.com>
* @date 2004, 2024
*
* @copyright SPDX-License-Identifier: MIT
*/
#ifndef RS485_H
#define RS485_H
#include <stdint.h>
#include "bacnet/basic/sys/bacnet_stack_exports.h"
#include "bacnet/datalink/mstp.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
BACNET_STACK_EXPORT
void RS485_Set_Interface(char *ifname);
BACNET_STACK_EXPORT
const char *RS485_Interface(void);
BACNET_STACK_EXPORT
void RS485_Initialize(void);
BACNET_STACK_EXPORT
void RS485_Send_Frame(
struct mstp_port_struct_t *mstp_port, /* port specific data */
const uint8_t *buffer, /* frame to send (up to 501 bytes of data) */
uint16_t nbytes); /* number of bytes of data (up to 501) */
BACNET_STACK_EXPORT
void RS485_Check_UART_Data(
struct mstp_port_struct_t *mstp_port); /* port specific data */
BACNET_STACK_EXPORT
uint32_t RS485_Get_Port_Baud_Rate(struct mstp_port_struct_t *mstp_port);
BACNET_STACK_EXPORT
uint32_t RS485_Get_Baud_Rate(void);
BACNET_STACK_EXPORT
bool RS485_Set_Baud_Rate(uint32_t baud);
BACNET_STACK_EXPORT
void RS485_Cleanup(void);
BACNET_STACK_EXPORT
void RS485_Print_Ports(void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif