Apple-2-HW/analog-firmware
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RGB bit count for AnalogGS

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This commit is contained in:
David Kuder 2023-04-16 23:22:45 -04:00
parent afac553ed6
commit b7380a8022
1 changed files with 7 additions and 5 deletions
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12
vga/vgaout.c
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@ -11,8 +11,10 @@
#ifdef ANALOG_GS
#include "vga12.pio.h"
#define RGB_PINCOUNT 12
#else
#include "vga9.pio.h"
#define RGB_PINCOUNT 9
#endif
#include "vgaout.h"
@ -110,18 +112,18 @@ static void DELAYED_COPY_CODE(vga_data_setup)(PIO pio, uint sm) {
sm_config_set_clkdiv(&c, CONFIG_SYSCLOCK / (2*PIXEL_FREQ));
// Map the state machine's OUT pin group to the data pins
sm_config_set_out_pins(&c, CONFIG_PIN_RGB_BASE, 9);
sm_config_set_set_pins(&c, CONFIG_PIN_RGB_BASE, 9);
sm_config_set_out_pins(&c, CONFIG_PIN_RGB_BASE, RGB_PINCOUNT);
sm_config_set_set_pins(&c, CONFIG_PIN_RGB_BASE, RGB_PINCOUNT);
// Enable autopull every 32 bits (2 x (9 data + 5 jump + 2 pad) bits)
// Enable autopull every 32 bits (2 x (RGB_PINCOUNT data + jump + pad) bits)
sm_config_set_out_shift(&c, true, true, 32);
// Set join the state machine FIFOs to double the TX fifo size
sm_config_set_fifo_join(&c, PIO_FIFO_JOIN_TX);
// Configure the pins as outputs & connect to the PIO
pio_sm_set_consecutive_pindirs(pio, sm, CONFIG_PIN_RGB_BASE, 9, true);
for(int i=0; i < 9; i++) {
pio_sm_set_consecutive_pindirs(pio, sm, CONFIG_PIN_RGB_BASE, RGB_PINCOUNT, true);
for(int i=0; i < RGB_PINCOUNT; i++) {
pio_gpio_init(pio, CONFIG_PIN_RGB_BASE+i);
}