pimoroni-pico/libraries/pico_vector/af-file-io.h

#include <stdlib.h>
#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif
void* fileio_open(const char* filename);

void fileio_close(void* fhandle);

size_t fileio_read(void* fhandle, void *buf, size_t len);

int fileio_getc(void* fhandle);

size_t fileio_tell(void* fhandle);

size_t fileio_seek(void* fhandle, size_t pos);
#ifdef __cplusplus
}
#endif