ESP8266 Community Forum

- Wed Apr 01, 2015 4:43 am #13169 Looks like it needs two additional headers from the SDK: osapi.h and ets_sys.h. These also have to go under extern "C" declaration.

- Thu Apr 02, 2015 5:38 am #13250 at the moment i use this.
not all functions are tested may there need for more "extern" the SDK seams to miss many prototypes

Code: Select all#ifdef __cplusplus
extern "C" {
#endif

#include "stdlib_noniso.h"
#include "ets_sys.h"
#include "osapi.h"
#include "mem.h"

#include <stdarg.h>

extern int vsnprintf(char * s, size_t n, const char * format, va_list arg);
extern int os_printf_plus(const char * format, ...);


#define vsnprintf_P(...)    vsnprintf( __VA_ARGS__ )
#define snprintf_P(...)    snprintf( __VA_ARGS__ )

#define putc(c)          os_putc(c)
#define printf(...)       os_printf( __VA_ARGS__ )
#define sprintf(...)       os_sprintf( __VA_ARGS__ )
#define snprintf(...)       os_snprintf( __VA_ARGS__ )

//#define memcmp(...)          os_memcmp( __VA_ARGS__ )
#define memcpy(...)         os_memcpy( __VA_ARGS__ )
#define memmove(...)      os_memmove( __VA_ARGS__ )
#define memset(...)         os_memset( __VA_ARGS__ )
#define str2macaddr(...)   os_str2macaddr( __VA_ARGS__ )
#define strcat(...)         os_strcat( __VA_ARGS__ )
#define strchr(...)         os_strchr( __VA_ARGS__ )
#define strcmp(...)         os_strcmp( __VA_ARGS__ )
#define strcpy(...)         os_strcpy( __VA_ARGS__ )
#define strlen(...)       os_strlen( __VA_ARGS__ )
#define strncmp(...)       os_strncmp( __VA_ARGS__ )
#define strncpy(...)       os_strncpy( __VA_ARGS__ )
#define strstr(...)       os_strstr( __VA_ARGS__ )

#define malloc(size)       os_malloc(size)
#define free(ptr)          os_free(ptr)


#define wdt_enable(...)
#define wdt_reset()         delay(0)

#ifdef __cplusplus
} // extern "C"
#endif


Github: Links2004 - ESP8266 Arduino

- Fri Apr 17, 2015 6:52 am #14802

ok i add some defines to use the os function, now i can port some code from avr Arduino projects

Code: Select all#define printf(...) os_printf( __VA_ARGS__ )
#define sprintf(...) os_sprintf( __VA_ARGS__ )


for some reasons i also need to add

Code: Select allextern int os_printf_plus(const char * format, ...);


When I add this code, I get the following compile error:

Code: Select allcore_esp8266_wiring_digital.c:In function '__attachInterrupt'
core_esp8266_wiring_digital.c:141:38: error: 'GPIO_PIN_INTR_ANYEDGE' undeclared (first use in this function)
:gpio_pin_intr_state_set(pin, GPIO_PIN_INTR_ANYEDGE);
:^
core_esp8266_wiring_digital.c:each undeclared identifier is reported only once for each function it appears in

I want to use printf, but I can't get it to work.. any ideas?