Keep trying font pokery.

src/fileio.cpp

@@ -1,32 +1,37 @@
+#include "af-file-io.h"
 #include "ff.h"
 #include "stdint.h"
 #include "string.h"
+#include "stdio.h"
+#include <stdlib.h>
 
 void* fileio_open(const char* filename) {
-    FIL *fil = new FIL();
-    FRESULT fr = f_open((FIL*)fil, filename, FA_READ);
-    (void)fr;
-    return (void *)fil;
+    printf("IMPL: Opening %s\n", filename);
+    FIL *fil = (FIL*)malloc(sizeof(FIL));
+    FRESULT fr = f_open(fil, filename, FA_READ);
+    if(fr == FR_OK) {
+        return (void *)fil;
+    } else {
+        free(fil);
+        return NULL;
+    }
 }
 
 void fileio_close(void* fhandle) {
     f_close((FIL*)fhandle);
+    free(fhandle);
 }
 
 size_t fileio_read(void* fhandle, void *buf, size_t len) {
     unsigned int bytes_read;
     FRESULT fr = f_read((FIL*)fhandle, buf, len, &bytes_read);
-    (void)fr;
-    return bytes_read;
+    return fr == FR_OK ? bytes_read : 0;
 }
 
 int fileio_getc(void* fhandle) {
-    unsigned int  bytes_read;
-    char c;
-    FRESULT fr = f_read((FIL*)fhandle, (void*)&c, 1, &bytes_read);
-    (void)fr;
-    (void)bytes_read;
-    return c;
+    unsigned char buf;
+    (void *)fileio_read(fhandle, (void*)&buf, (size_t)1);
+    return (int)buf;
 }
 
 size_t fileio_tell(void* fhandle) {
@@ -35,5 +40,5 @@ size_t fileio_tell(void* fhandle) {
 
 size_t fileio_seek(void* fhandle, size_t pos) {
     f_lseek((FIL*)fhandle, pos);
-    return pos;
+    return f_tell((FIL*)fhandle);
 }

src/main.cpp

@@ -61,8 +61,13 @@ int main() {
     printf("Init: OK\n");
 
     printf("Font: ...");
-    vector->set_font("/marker-high.af", 30);
-    printf("Font: OK\n");
+    if(vector->set_font("/marker-high.af", 30)) {
+      printf("Font: OK\n");
+    } else {
+      printf("Font: Fail!\n");
+    }
+
+    sleep_ms(1000);
 
     pp_mat3_t t = pp_mat3_identity();
     pp_mat3_translate(&t, 50, 50);