c - getting Error[Pe020]: identifier "" is undefined in IAR with an typedef enum -


i haven't found solution on internet , why asking here.

my led_typedef variable undefined in mydriverconfig.h. first, have definded in myapplications.h:

/* define prevent recursive inclusion -------------------------------------*/ #ifndef __myapplications_h #define __myapplications_h   #ifdef __cplusplus  extern "c" { #endif   #include "main.h"   typedef enum  {   led1 = 0,   led_green = led1 } led_typedef;   #define ledn                               1 #define led1_pin                           gpio_pin_0 #define led1_gpio_port                     gpiob #define led1_gpio_clk_enable()           __gpioa_clk_enable()   #define led1_gpio_clk_disable()          __gpioa_clk_disable()  #define ledx_gpio_clk_enable(__index__)   (((__index__) == 0) ? led1_gpio_clk_enable() : 0) #define ledx_gpio_clk_disable(__index__)  (((__index__) == 0) ? led1_gpio_clk_disable() : 0)   void led_on(led_typedef led); void led_off(led_typedef led); void led_toggle(led_typedef led);   void mcu_configuration(void);    #endif /* __myapplications_h */

then, in myconfigdriver.h:

    /* define prevent recursive inclusion -------------------------------------*/ #ifndef __myconfig_h #define __myconfig_h  #ifdef __cplusplus  extern "c" { #endif  #include "main.h"    void systemclock_config(void);   void mx_led_init(led_typedef led); void mx_can_init(void); void mx_i2c1_init(void); void mx_spi1_init(void); void mx_usart2_uart_init(void);   #endif /* __myconfig_h */

i thought definded because main.h included all:

/* define prevent recursive inclusion -------------------------------------*/ #ifndef __main_h #define __main_h  #include "stm32f0xx_hal.h" #include "mydriverconfig.h" #include "myapplications.h"   #endif /* __main_h */

these errors get:

myapplications.c   error[pe020]: identifier "led_typedef" undefined c:\inc\mydriverconfig.h 24  error while running c/c++ compiler  main.c   error[pe020]: identifier "led_typedef" undefined c:\inc\mydriverconfig.h 24  error while running c/c++ compiler

total number of errors: 2 total number of warnings: 0

when include myapplication.h in mydriverconfig.h this:

updating build tree...  myapplications.c   error[pe020]: identifier "led_typedef" undefined c:\users\inc\mydriverconfig.h 25  error while running c/c++ compiler  main.c   mydriverconfig.c   total number of errors: 1  total number of warnings: 0

i don't understand why have 2 errors when not including myapplications while use led_typdef once in mydriverconfig.h.

i have tried add extern led_typedef led; in myapplication.h without results.

ok, thank you. people interested way working well:

    /* define prevent recursive inclusion -------------------------------------*/ #ifndef __main_h #define __main_h    #include "stm32f0xx_hal.h" #include "mydriverconfig.h" #include "myapplications.h"    #endif /* __main_h */

now in mydriverconfig.h

    /* define prevent recursive inclusion -------------------------------------*/ #ifndef __myconfig_h #define __myconfig_h  #ifdef __cplusplus  extern "c" { #endif  #include "stm32f0xx_hal.h" #include "myapplications.h"  extern gpio_typedef*  led_port[ledn]; extern const uint16_t led_pin[ledn]; [...]  void mx_led_init(led_typedef led);   #endif /* __myconfig_h */

then, in mydriverconfig.c

        /* includes ------------------------------------------------------------------*/     #include "mydriverconfig.h"      [...]     void mx_led_init(led_typedef led)     {    [...]     }

then, in myapplications.h

#ifndef __myapplications_h #define __myapplications_h     #ifdef __cplusplus  extern "c" { #endif  #include "stm32f0xx_hal.h"      typedef enum  {   led1 = 0,   led_green = led1 } led_typedef;   [...]  void led_on(led_typedef led);   #endif /* __myapplications_h */

and finaly in myapplications.c

    #include "myapplications.h" #include "mydriverconfig.h"  gpio_typedef*  led_port[ledn] = {led1_gpio_port}; const uint16_t led_pin[ledn] = {led1_pin};

code not perfect because there still circular includes : stm32f0xx_hal.h compiling well.


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