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Diffstat (limited to 'src/drivers/ao_vga.c')
| -rw-r--r-- | src/drivers/ao_vga.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/drivers/ao_vga.c b/src/drivers/ao_vga.c index 909e3109..59658caf 100644 --- a/src/drivers/ao_vga.c +++ b/src/drivers/ao_vga.c @@ -91,6 +91,8 @@ static uint32_t *scanline; (en << STM_DMA_CCR_EN)) +uint8_t ao_vga_vblank; + void stm_tim2_isr(void) { int16_t line = stm_tim3.cnt; @@ -111,6 +113,10 @@ void stm_tim2_isr(void) if (((line - VBLANK_END) & 1)) scanline += AO_VGA_STRIDE; } else { + if (line == VBLANK_START) { + ao_vga_vblank = 1; + ao_wakeup(&ao_vga_vblank); + } scanline = ao_vga_fb; } stm_tim2.sr = 0; |