nrf_libuarte_async_rx_free ?

[RixtronixLAB]

Dear Member,

I want to call nrf_libuarte_async_rx_free from another file outside main.c

nrf_libuarte_async_rx_free(&libuarte1, (uint8_t *)&GPS.rxTmp, 1);

I got  

..\..\..\GPS-Lib\GPS_lib.c(35): error:  #20: identifier "libuarte1" is undefined

I have included 

#include "nrf_libuarte_async.h"

in GPS_lib.c

and

NRF_LIBUARTE_ASYNC_DEFINE(libuarte1, 1, 2, 2, NRF_LIBUARTE_PERIPHERAL_NOT_USED, 255, 3);

in main.c ,

How can I rectify it ?

Thanks

[Jørgen Holmefjord]

Hi,

The NRF_LIBUARTE_ASYNC_DEFINE macro will declare libuarte1 in your main.c file as a static variable, which prevents you from accessing it outside of the file where it is declared (out-of-scope).

You have some different options to resolve this:

• Modify the NRF_LIBUARTE_ASYNC_DEFINE macro in nrf_libuarte_async.h to declare the nrf_libuarte_async_t object as non-static, then declare the variable as extern in the file where you want to use it.
• Declare a pointer to libuarte1 in main.c, and declare the same pointer as extern in the file where you want to use it (see this post).
• Implement a function in main.c that calls nrf_libuarte_async_rx_free() for you, and declare this function in a header-file (main.h) that you include in the file where you want to use the function.

Best regards,
Jørgen

[RixtronixLAB]

Hi Jorgen,

Thanks for your reply,

I select option 1,

So :

 static const nrf_libuarte_async_t _name = {\
              .p_rx_pool = &CONCAT_2(_name,_rx_pool),\
              .p_rx_queue =  &CONCAT_2(_name,_rxdata_queue),\
              /* If p_rtc is not NULL it means that RTC is used for RX timeout */ \
              .p_rtc = _LIBUARTE_ASYNC_EVAL(NRFX_CONCAT_3(NRFX_RTC, _rtc1_idx, _ENABLED), (&CONCAT_2(_name, _rtc)), (NULL)),\
              /* If p_timer is not NULL it means that RTC is used for RX timeout */ \
              .p_timer = _LIBUARTE_ASYNC_EVAL(NRFX_CONCAT_3(NRFX_TIMER, _timer1_idx, _ENABLED), (&CONCAT_2(_name, _timer)), (NULL)),\
              /* If p_time and p_rtc is NULL it means that app_timer is used for RX timeout */ \
              .p_app_timer = _LIBUARTE_ASYNC_EVAL(NRFX_CONCAT_3(NRFX_TIMER, _timer1_idx, _ENABLED),\
	                    (NULL),\
	                    (_LIBUARTE_ASYNC_EVAL(NRFX_CONCAT_3(NRFX_RTC, _rtc1_idx, _ENABLED),(NULL), \
	                         (&CONCAT_2(_name,_app_timer)))) \
	            ),\
              .p_app_timer_ctrl_blk = _LIBUARTE_ASYNC_EVAL(NRFX_CONCAT_3(NRFX_TIMER, _timer1_idx, _ENABLED),\
	                    (NULL),\
	                    (_LIBUARTE_ASYNC_EVAL(NRFX_CONCAT_3(NRFX_RTC, _rtc1_idx, _ENABLED),(NULL), \
	                         (&CONCAT_2(_name,_app_timer_ctrl_blk)))) \
	            ),\
              .p_libuarte = &CONCAT_2(_name, _libuarte),\
              .p_ctrl_blk = &CONCAT_2(_name, ctrl_blk),\
              .rx_buf_size = _rx_buf_size,\
              _LIBUARTE_ASYNC_EVAL(\
                  NRFX_CONCAT_3(NRFX_RTC, _rtc1_idx, _ENABLED),\
                  (.rtc_handler =CONCAT_2(_name, _rtc_handler)),\
                  ()\
              )\
      };\

change to :

 const nrf_libuarte_async_t _name = {\
              .p_rx_pool = &CONCAT_2(_name,_rx_pool),\
              .p_rx_queue =  &CONCAT_2(_name,_rxdata_queue),\
              /* If p_rtc is not NULL it means that RTC is used for RX timeout */ \
              .p_rtc = _LIBUARTE_ASYNC_EVAL(NRFX_CONCAT_3(NRFX_RTC, _rtc1_idx, _ENABLED), (&CONCAT_2(_name, _rtc)), (NULL)),\
              /* If p_timer is not NULL it means that RTC is used for RX timeout */ \
              .p_timer = _LIBUARTE_ASYNC_EVAL(NRFX_CONCAT_3(NRFX_TIMER, _timer1_idx, _ENABLED), (&CONCAT_2(_name, _timer)), (NULL)),\
              /* If p_time and p_rtc is NULL it means that app_timer is used for RX timeout */ \
              .p_app_timer = _LIBUARTE_ASYNC_EVAL(NRFX_CONCAT_3(NRFX_TIMER, _timer1_idx, _ENABLED),\
	                    (NULL),\
	                    (_LIBUARTE_ASYNC_EVAL(NRFX_CONCAT_3(NRFX_RTC, _rtc1_idx, _ENABLED),(NULL), \
	                         (&CONCAT_2(_name,_app_timer)))) \
	            ),\
              .p_app_timer_ctrl_blk = _LIBUARTE_ASYNC_EVAL(NRFX_CONCAT_3(NRFX_TIMER, _timer1_idx, _ENABLED),\
	                    (NULL),\
	                    (_LIBUARTE_ASYNC_EVAL(NRFX_CONCAT_3(NRFX_RTC, _rtc1_idx, _ENABLED),(NULL), \
	                         (&CONCAT_2(_name,_app_timer_ctrl_blk)))) \
	            ),\
              .p_libuarte = &CONCAT_2(_name, _libuarte),\
              .p_ctrl_blk = &CONCAT_2(_name, ctrl_blk),\
              .rx_buf_size = _rx_buf_size,\
              _LIBUARTE_ASYNC_EVAL(\
                  NRFX_CONCAT_3(NRFX_RTC, _rtc1_idx, _ENABLED),\
                  (.rtc_handler =CONCAT_2(_name, _rtc_handler)),\
                  ()\
              )\
      };\

Then

extern const nrf_libuarte_async_t libuarte1;

Guide me, please ? thanks

[RixtronixLAB]

extern const nrf_libuarte_async_t libuarte1; in main.c and

I call

nrf_libuarte_async_rx_free(&libuarte1, (uint8_t *)&GPS.rxTmp, 1); in GPS_lib.c

Correct me  ? thanks

[RixtronixLAB]

it's working with :

nrf_libuarte_async_rx_free(&libuarte1, (uint8_t *)&GPS.rxTmp, 1);   

but not working with

nrf_libuarte_async_tx(&libuarte, GPS.rxBuffer, 512);

I don't understand ? they use the same

const nrf_libuarte_async_t _name

[Jørgen Holmefjord]

RixtronixLAB said:

but not working with

nrf_libuarte_async_tx(&libuarte, GPS.rxBuffer, 512);

What exactly is not working with this? Do you get compile errors? Errors during run-time? Data not being transmitted correctly?