Call bps.c and .h in custom .c

RE: Call bps.c and .h in custom .c

ovrebekk — Fri, 15 Sep 2023 11:42:49 GMT

I am glad to hear it, I will close the case then 🙂

RE: Call bps.c and .h in custom .c

kai19960504 — Fri, 15 Sep 2023 05:48:48 GMT

Hi Torbjørn

Thx a lot. It's working!!

Best regards,
Kai

RE: Call bps.c and .h in custom .c

ovrebekk — Thu, 14 Sep 2023 21:52:16 GMT

Hi Kai

Most likely the reason is that the BLE_BPS_DEF macro defines m_bps as static, limiting it's scope to the file in which it is declared:

/**@brief   Macro for defining a ble_bps instance.
 *
 * @param   _name   Name of the instance.
 * @hideinitializer
 */
#define BLE_BPS_DEF(_name)                                                                          \
static ble_bps_t _name;                                                                             \
NRF_SDH_BLE_OBSERVER(_name ## _obs,                                                                 \
                     BLE_BPS_BLE_OBSERVER_PRIO,                                                     \
                     ble_bps_on_ble_evt, &_name)

The easiest solution is probably to make the extern declaration a pointer instead, and make the pointer point to the m_bps variable.

Something like this:

// In header file
extern ble_bps_t *mp_bps;

// In main.c
BLE_BPS_DEF(m_bps);
ble_bps_t *mp_bps = &m_bps;

Best regards
Torbjørn

RE: Call bps.c and .h in custom .c

kai19960504 — Thu, 14 Sep 2023 03:20:29 GMT

Hi Torbjørn

Let me add that there will be no problem in adding and referencing my other custom service, but the same method will be used in BPS. You can see the picture below. I also use exter to reference m_cs and m_bps, but only m_bps has problems.

Best regards
Kai

RE: Call bps.c and .h in custom .c

kai19960504 — Thu, 14 Sep 2023 02:32:00 GMT

Hi Torbjørn

According to the method you provide. I have already create a main.h to extern the m_bps variable.

And add main.h in the .c I want to operate.

But the result still show undefined

Best regards

Kai

RE: Call bps.c and .h in custom .c

ovrebekk — Wed, 13 Sep 2023 13:36:13 GMT

Hi Kai

If you want to share the m_bps variable between multiple files you should move the extern declaration to a header file, and make sure this header file is included in every source file that needs access to m_bps.

The declaration (line 53 from your screenshot) you can keep in main.c, just make sure that main.c also includes the header file.

Best regards
Torbjørn