giomba
/
ceda2vga
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Remove legacy pointer to vga_pixel machine from VGA module.

This commit is contained in:
giomba 2022-12-03 20:54:51 +01:00
parent ac055b6673
commit 36cc3e1c0a
1 changed files with 2 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/vga.c
View File

@ -21,7 +21,6 @@ typedef struct PIORun
} PIORun; } PIORun;
static PIORun vga_hsync, vga_vsync, vga_pixel; static PIORun vga_hsync, vga_vsync, vga_pixel;
static PIORun *vga_pixel_ptr = &vga_pixel;
static bool dma_ready = false; static bool dma_ready = false;
static int dma_channel; static int dma_channel;
@ -91,7 +90,7 @@ void dma_handler(void)
void new_frame_handler(void) void new_frame_handler(void)
{ {
if (vga_pixel_ptr && dma_ready) if (dma_ready)
{ {
// Explicitly put the first uint32_t word in the FIFO, // Explicitly put the first uint32_t word in the FIFO,
// because, when PIO pulls data for the first time, // because, when PIO pulls data for the first time,
@ -103,7 +102,7 @@ void new_frame_handler(void)
// Also note: despite the "blocking put", when this interrupt // Also note: despite the "blocking put", when this interrupt
// is serviced, PIO FIFO is always empty, so in practice // is serviced, PIO FIFO is always empty, so in practice
// this will never block. // this will never block.
pio_sm_put_blocking(vga_pixel_ptr->pio, vga_pixel_ptr->sm, 0); pio_sm_put_blocking(vga_pixel.pio, vga_pixel.sm, 0);
// Start DMA (but skip the initial word, which has been put manually) // Start DMA (but skip the initial word, which has been put manually)
dma_channel_set_read_addr(dma_channel, &frame[4], true); dma_channel_set_read_addr(dma_channel, &frame[4], true);