void u8g2_SetupBuffer_TGA(u8g2_t *u8g2, const u8g2_cb_t *u8g2_cb)
{
static uint8_t buf[(DEFAULT_WIDTH)*8*8];
u8x8_Setup_TGA(u8g2_GetU8x8(u8g2));
u8g2_SetupBuffer(u8g2, buf, 8, u8g2_ll_hvline_vertical_top_lsb, u8g2_cb);
}
void u8g2_SetupBitmap(u8g2_t *u8g2, const u8g2_cb_t *u8g2_cb, uint16_t pixel_width, uint16_t pixel_height)
{
/* allocate bitmap, assign the device callback to u8x8 */
u8x8_SetupBitmap(u8g2_GetU8x8(u8g2), pixel_width, pixel_height);
/* configure u8g2 in full buffer mode */
u8g2_SetupBuffer(u8g2, u8x8_bitmap.u8g2_buf, (pixel_height+7)/8, u8g2_ll_hvline_vertical_top_lsb, u8g2_cb);
}