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AP_OSD: load font on startup 

this reduces memory fragmemtation and maximises available memory
during update
This commit is contained in:
Andrew Tridgell 2018-07-09 19:16:06 +10:00
parent 6347de2b89
commit 7454c9f8c5
2 changed files with 4 additions and 6 deletions
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9
libraries/AP_OSD/AP_OSD_MAX7456.cpp
View File

@ -148,7 +148,10 @@ bool AP_OSD_MAX7456::init()
hal.scheduler->delay(1);
_dev->read_registers(MAX7456ADD_VM0|MAX7456ADD_READ, &status, 1);
_dev->get_semaphore()->give();
return status == 0;
if (status != 0) {
return false;
}
return update_font();
}
bool AP_OSD_MAX7456::update_font()
@ -342,10 +345,6 @@ void AP_OSD_MAX7456::reinit()
void AP_OSD_MAX7456::flush()
{
if (!font_updated) {
update_font();
font_updated = true;
}
check_reinit();
transfer_frame();
}

1
libraries/AP_OSD/AP_OSD_MAX7456.h
View File

@ -59,7 +59,6 @@ private:
uint8_t video_signal_reg;
bool initialized;
bool font_updated;
static const uint8_t video_lines_ntsc = 13;
static const uint8_t video_lines_pal = 16;