jepler/MCUME
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
MCUME/MCUME_pico2/display/pico_dsp.cpp
Jeff Epler 1c0fd85b42
Some checks failed
Build mcume / bins (push) Has been cancelled
Details
Update sound to work with Fruit Jam Rev D 
tested with speaker & headphones using the program from
https://www.c64-wiki.com/wiki/SID#Programming_in_BASIC
which plays a series of descending tones with different random settings
(some of them sound crunchy)
2025-08-05 10:03:29 -05:00

1596 lines
41 KiB
C++
Executable file
Raw Permalink Blame History

/*
This file is part of DISPLAY library.
Supports VGA and TFT display
DISPLAY library is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Copyright (C) 2020 J-M Harvengt
*/
#include "pico/stdlib.h"
#include "pico/multicore.h"
#include "hardware/spi.h"
#include "hardware/dma.h"
#include "hardware/irq.h"
#include <string.h>
#include "pico_dsp.h"
#include "font8x8.h"
#include "include.h"
#include "hdmi_framebuffer.h"
static hdmi_framebuffer_obj_t hdmi_obj;
static gfx_mode_t gfxmode = MODE_UNDEFINED;
/* TFT structures / constants */
#define digitalWrite(pin, val) gpio_put(pin, val)
#define SPICLOCK 60000000
#ifdef USE_VGA
#define SPI_MODE SPI_CPOL_1
#else
#ifdef ST7789
#ifdef ST7789_POL
#define SPI_MODE SPI_CPOL_0
#else
#define SPI_MODE SPI_CPOL_1
#endif
#endif
#ifdef ILI9341
#define SPI_MODE SPI_CPOL_0
#endif
#endif
#define LINES_PER_BLOCK 64
#define NR_OF_BLOCK 4
#define TFT_SWRESET 0x01
#define TFT_SLPOUT 0x11
#define TFT_INVON 0x21
#define TFT_DISPOFF 0x28
#define TFT_DISPON 0x29
#define TFT_CASET 0x2A
#define TFT_PASET 0x2B
#define TFT_RAMWR 0x2C
#define TFT_MADCTL 0x36
#define TFT_PIXFMT 0x3A
#define TFT_MADCTL_MY 0x80
#define TFT_MADCTL_MX 0x40
#define TFT_MADCTL_MV 0x20
#define TFT_MADCTL_ML 0x10
#define TFT_MADCTL_RGB 0x00
#define TFT_MADCTL_BGR 0x08
#define TFT_MADCTL_MH 0x04
static void SPItransfer(uint8_t val)
{
uint8_t dat8=val;
spi_write_blocking(TFT_SPIREG, &dat8, 1);
}
static void SPItransfer16(uint16_t val)
{
uint8_t dat8[2];
dat8[0] = val>>8;
dat8[1] = val&0xff;
spi_write_blocking(TFT_SPIREG, dat8, 2);
}
#define DELAY_MASK 0x80
static const uint8_t init_commands[] = {
1+DELAY_MASK, TFT_SWRESET, 150,
1+DELAY_MASK, TFT_SLPOUT, 255,
2+DELAY_MASK, TFT_PIXFMT, 0x55, 10,
2, TFT_MADCTL, TFT_MADCTL_MV | TFT_MADCTL_BGR,
1, TFT_INVON,
1, TFT_DISPON,
0
};
/* TFT structures / constants */
#define RGBVAL16(r,g,b) ( (((r>>3)&0x1f)<<11) | (((g>>2)&0x3f)<<5) | (((b>>3)&0x1f)<<0) )
static uint16_t * blocks[NR_OF_BLOCK];
static uint16_t blocklens[NR_OF_BLOCK];
static dma_channel_config dmaconfig;
static uint dma_tx=0;
static volatile uint8_t rstop = 0;
static volatile bool cancelled = false;
static volatile uint8_t curTransfer = 0;
static uint8_t nbTransfer = 0;
#undef B16
/* VGA structures / constants */
#define R16(rgb) ((rgb>>8)&0xf8)
#define G16(rgb) ((rgb>>3)&0xfc)
#define B16(rgb) ((rgb<<3)&0xf8)
#ifdef VGA222
#define VGA_RGB(r,g,b) ( (((r>>6)&0x03)<<4) | (((g>>6)&0x03)<<2) | (((b>>6)&0x3)<<0) )
#else
#define VGA_RGB(r,g,b) ( (((r>>5)&0x07)<<5) | (((g>>5)&0x07)<<2) | (((b>>6)&0x3)<<0) )
#endif
// 8 bits 320x240 frame buffer => 64K
static vga_pixel * visible_framebuffer = NULL;
static vga_pixel * framebuffer = NULL;
static vga_pixel * fb0 = NULL;
static vga_pixel * fb1 = NULL;
static int fb_width;
static int fb_height;
static int fb_stride;
static int doorbell_id;
void PICO_DSP::setArea(uint16_t x1,uint16_t y1,uint16_t x2,uint16_t y2) {
int dx=0;
int dy=0;
#ifdef ST7789
if (TFT_REALWIDTH == TFT_REALHEIGHT)
{
#ifdef ROTATE_SCREEN
if (!flipped) {
dy += 80;
}
#else
if (flipped) {
dx += 80;
}
#endif
}
#endif
digitalWrite(_dc, 0);
SPItransfer(TFT_CASET);
digitalWrite(_dc, 1);
SPItransfer16(x1+dx);
digitalWrite(_dc, 1);
SPItransfer16(x2+dx);
digitalWrite(_dc, 0);
SPItransfer(TFT_PASET);
digitalWrite(_dc, 1);
SPItransfer16(y1+dy);
digitalWrite(_dc, 1);
SPItransfer16(y2+dy);
digitalWrite(_dc, 0);
SPItransfer(TFT_RAMWR);
digitalWrite(_dc, 1);
return;
}
PICO_DSP::PICO_DSP()
{
}
static void (* volatile Core1Fnc)() = NULL; // core 1 remote function
static void VgaCore(void)
{
void (*fnc)();
while (1)
{
__dmb();
#ifdef HAS_SND
// handle_fill_samples();
#endif
// execute remote function
fnc = Core1Fnc;
if (fnc != NULL)
{
fnc();
__dmb();
Core1Fnc = NULL;
}
}
}
gfx_error_t PICO_DSP::begin(gfx_mode_t mode)
{
// Reset SPI if we come from TFT mode
if ( (mode != MODE_TFT_320x240) && (gfxmode == MODE_TFT_320x240) ) {
fillScreenNoDma(RGBVAL16(0x0,0x00,0x00));
digitalWrite(_cs, 0);
digitalWrite(_dc, 0);
SPItransfer(TFT_DISPOFF);
digitalWrite(_cs, 1);
sleep_ms(20);
digitalWrite(_cs, 0);
digitalWrite(_cs, 1);
if (_bkl != 0xff) {
digitalWrite(_bkl, 0);
}
//spi_init(TFT_SPIREG, 0);
//spi_deinit(TFT_SPIREG);
//spi_set_slave(TFT_SPIREG, true);
}
switch(mode) {
case MODE_VGA_320x240:
gfxmode = mode;
fb_width = 320;
fb_height = 240;
fb_stride = 320;
hdmi_obj.framebuffer = NULL;
hdmi_framebuffer(&hdmi_obj, fb_width, fb_height, 8);
fb0 = (uint8_t *)hdmi_obj.framebuffer;
visible_framebuffer = fb0;
framebuffer = fb0;
break;
case MODE_VGA_256x240:
gfxmode = mode;
fb_width = 256;
fb_height = 240;
fb_stride = 320;
hdmi_obj.framebuffer = NULL;
hdmi_framebuffer(&hdmi_obj, fb_width, fb_height, 8);
fb0 = (uint8_t *)hdmi_obj.framebuffer;
visible_framebuffer = fb0;
framebuffer = fb0;
break;
case MODE_VGA_640x240:
gfxmode = mode;
fb_width = 640;
fb_height = 240;
fb_stride = 640;
hdmi_obj.framebuffer = NULL;
hdmi_framebuffer(&hdmi_obj, fb_width, fb_height, 8);
fb0 = (uint8_t *)hdmi_obj.framebuffer;
visible_framebuffer = fb0;
framebuffer = fb0;
break;
case MODE_TFT_320x240:
gfxmode = mode;
fb_width = TFT_WIDTH;
fb_height = TFT_HEIGHT;
fb_stride = fb_width;
_cs = TFT_CS;
_dc = TFT_DC;
_rst = TFT_RST;
_mosi = TFT_MOSI;
_sclk = TFT_SCLK;
_bkl = TFT_BACKLIGHT;
gpio_init(_dc);
gpio_set_dir(_dc, GPIO_OUT);
gpio_init(_cs);
gpio_set_dir(_cs, GPIO_OUT);
digitalWrite(_cs, 1);
digitalWrite(_dc, 1);
if (_bkl != 0xff) {
gpio_init(_bkl);
gpio_set_dir(_bkl, GPIO_OUT);
digitalWrite(_bkl, 1);
}
spi_init(TFT_SPIREG, SPICLOCK);
spi_set_format(TFT_SPIREG, 8, SPI_MODE, SPI_CPHA_0, SPI_MSB_FIRST);
gpio_set_function(_sclk , GPIO_FUNC_SPI);
gpio_set_function(_mosi , GPIO_FUNC_SPI);
// Initialize display
if (_rst != 0xff) {
gpio_init(_rst);
gpio_set_dir(_rst, GPIO_OUT);
digitalWrite(_rst, 1);
sleep_ms(100);
digitalWrite(_rst, 0);
sleep_ms(100);
digitalWrite(_rst, 1);
sleep_ms(200);
}
const uint8_t *addr = init_commands;
uint8_t count;
digitalWrite(_cs, 0);
while (count = *addr++) {
uint8_t command = *addr++;
#ifdef ILI9341
if ( command == TFT_INVON ) {
// Skip TFT_INVON for ILI
}
else
#endif
{
digitalWrite(_dc, 0); // command
SPItransfer(command);
uint16_t ms = count & DELAY_MASK;
count &= ~DELAY_MASK;
while (--count > 0) { // data
uint8_t data = *addr++;
#ifdef ILI9341
#else
if ( command == TFT_MADCTL ) {
data = TFT_MADCTL_MX | TFT_MADCTL_MV |TFT_MADCTL_RGB;
}
#endif
digitalWrite(_dc, 1);
SPItransfer(data);
}
if (ms) {
ms = *addr++; // Read post-command delay time (ms)
if(ms == 255) ms = 500; // If 255, delay for 500 ms
digitalWrite(_cs, 1);
//SPI.endTransaction();
sleep_ms(ms);
//SPI.beginTransaction(SPISettings(SPICLOCK, MSBFIRST, SPI_MODE));
digitalWrite(_cs, 0);
}
}
}
digitalWrite(_cs, 1);
break;
}
return(GFX_OK);
}
void PICO_DSP::end()
{
}
gfx_mode_t PICO_DSP::getMode(void)
{
return gfxmode;
}
void PICO_DSP::flipscreen(bool flip)
{
digitalWrite(_dc, 0);
digitalWrite(_cs, 0);
SPItransfer(TFT_MADCTL);
digitalWrite(_dc, 1);
if (flip) {
flipped=true;
#ifdef ILI9341
SPItransfer(TFT_MADCTL_MV | TFT_MADCTL_BGR);
#endif
#ifdef ST7789
#ifdef ROTATE_SCREEN
SPItransfer(TFT_MADCTL_RGB);
#else
SPItransfer(TFT_MADCTL_MY | TFT_MADCTL_MV |TFT_MADCTL_RGB);
#endif
#endif
}
else {
flipped=false;
#ifdef ILI9341
SPItransfer(TFT_MADCTL_MX | TFT_MADCTL_MY | TFT_MADCTL_MV | TFT_MADCTL_BGR);
#endif
#ifdef ST7789
#ifdef ROTATE_SCREEN
SPItransfer(TFT_MADCTL_MX | TFT_MADCTL_MY | TFT_MADCTL_RGB);
#else
SPItransfer(TFT_MADCTL_MX | TFT_MADCTL_MV | TFT_MADCTL_RGB);
#endif
#endif
}
digitalWrite(_cs, 1);
}
bool PICO_DSP::isflipped(void)
{
return(flipped);
}
/***********************************************************************************************
DMA functions
***********************************************************************************************/
static void dma_isr() {
irq_clear(DMA_IRQ_0);
dma_hw->ints0 = 1u << dma_tx;
curTransfer++;
if (curTransfer >= nbTransfer) {
curTransfer = 0;
}
if (cancelled) {
rstop = 1;
}
else
{
dma_channel_transfer_from_buffer_now(dma_tx, blocks[curTransfer], blocklens[curTransfer]);
}
}
static void setDmaStruct() {
// Setup the control channel
if (dma_tx == 0) {
dma_tx = dma_claim_unused_channel(true);
}
dmaconfig = dma_channel_get_default_config(dma_tx);
channel_config_set_transfer_data_size(&dmaconfig, DMA_SIZE_16);
channel_config_set_dreq(&dmaconfig, TFT_SPIDREQ);
//channel_config_set_read_increment(&dmaconfig, true); // read incrementing
//channel_config_set_write_increment(&dmaconfig, false); // no write incrementing
dma_channel_configure(
dma_tx,
&dmaconfig,
&spi_get_hw(TFT_SPIREG)->dr, // write address
blocks[0],
blocklens[0],
false
);
irq_set_exclusive_handler(DMA_IRQ_0, dma_isr);
dma_channel_set_irq0_enabled(dma_tx, true);
irq_set_enabled(DMA_IRQ_0, true);
dma_hw->ints0 = 1u << dma_tx;
}
void PICO_DSP::startRefresh(void) {
if (gfxmode == MODE_TFT_320x240) {
uint32_t remaining = TFT_HEIGHT*TFT_WIDTH*2;
int i=0;
nbTransfer = 0;
while (remaining > 0) {
uint16_t * fb = blocks[i];
int32_t len = (remaining >= (LINES_PER_BLOCK*TFT_WIDTH*2)?LINES_PER_BLOCK*TFT_WIDTH*2:remaining);
switch (i) {
case 0:
if (fb == 0) fb = (uint16_t*)((int)malloc(len+64)&0xffffffe0);
break;
case 1:
if (fb == 0) fb = (uint16_t*)((int)malloc(len+64)&0xffffffe0);
break;
case 2:
if (fb == 0) fb = (uint16_t*)((int)malloc(len+64)&0xffffffe0);
break;
case 3:
if (fb == 0) fb = (uint16_t*)((int)malloc(len+64)&0xffffffe0);
break;
}
blocks[i] = fb;
blocklens[i] = len/2;
if (blocks[i] == 0) {
fillScreenNoDma(RGBVAL16(0xFF,0xFF,0x00));
printf("FB allocaltion failed for block %d\n",i);
sleep_ms(10000);
}
nbTransfer++;
remaining -= len;
i++;
}
curTransfer = 0;
rstop = 0;
digitalWrite(_cs, 1);
setDmaStruct();
fillScreen(RGBVAL16(0x00,0x00,0x00));
digitalWrite(_cs, 0);
setArea((TFT_REALWIDTH-TFT_WIDTH)/2, (TFT_REALHEIGHT-TFT_HEIGHT)/2, (TFT_REALWIDTH-TFT_WIDTH)/2 + TFT_WIDTH-1, (TFT_REALHEIGHT-TFT_HEIGHT)/2+TFT_HEIGHT-1);
// we switch to 16bit mode!!
spi_set_format(TFT_SPIREG, 16, SPI_CPOL_0, SPI_CPHA_0, SPI_MSB_FIRST);
dma_start_channel_mask(1u << dma_tx);
}
else {
fillScreen(RGBVAL16(0x00,0x00,0x00));
}
}
void PICO_DSP::stopRefresh(void) {
if (gfxmode == MODE_TFT_320x240) {
rstop = 1;
unsigned long m = time_us_32()*1000;
cancelled = true;
while (!rstop) {
if ((time_us_32()*1000 - m) > 100) break;
sleep_ms(100);
asm volatile("wfi");
};
rstop = 0;
sleep_ms(100);
cancelled = false;
//dmatx.detachInterrupt();
fillScreen(RGBVAL16(0x00,0x00,0x00));
digitalWrite(_cs, 1);
// we switch back to GFX mode!!
begin(gfxmode);
setArea(0, 0, TFT_REALWIDTH-1, TFT_REALHEIGHT-1);
}
}
/***********************************************************************************************
GFX functions
***********************************************************************************************/
// retrieve size of the frame buffer
int PICO_DSP::get_frame_buffer_size(int *width, int *height)
{
if (width != nullptr) *width = fb_width;
if (height != nullptr) *height = fb_height;
return fb_stride;
}
void PICO_DSP::waitSync()
{
if (gfxmode == MODE_TFT_320x240) {
}
else {
hdmi_framebuffer_vsync();
//HdmiVSync();
}
}
void PICO_DSP::waitLine(int line)
{
if (gfxmode == MODE_TFT_320x240) {
}
else {
// while (currentLine != line) {};
}
}
/***********************************************************************************************
GFX functions
***********************************************************************************************/
dsp_pixel * PICO_DSP::getLineBuffer(int j) {
return ((dsp_pixel *)&framebuffer[j*fb_stride]);
}
void PICO_DSP::fillScreen(dsp_pixel color) {
int i,j;
if (gfxmode == MODE_TFT_320x240) {
for (j=0; j<TFT_HEIGHT; j++)
{
uint16_t * block=blocks[j>>6];
uint16_t * dst=&block[(j&0x3F)*fb_stride];
for (i=0; i<fb_width; i++)
{
*dst++ = color;
}
}
}
else {
vga_pixel color8 = VGA_RGB(R16(color),G16(color),B16(color));
for (j=0; j<fb_height; j++)
{
vga_pixel * dst=&framebuffer[j*fb_stride];
for (i=0; i<fb_width; i++)
{
*dst++ = color8;
}
}
}
}
void PICO_DSP::drawRect(int16_t x, int16_t y, int16_t w, int16_t h, dsp_pixel color) {
int i,j,l=y;
if (gfxmode == MODE_TFT_320x240) {
for (j=0; j<h; j++)
{
uint16_t * block=blocks[l>>6];
uint16_t * dst=&block[(l&0x3F)*fb_stride+x];
for (i=0; i<w; i++)
{
*dst++ = color;
}
l++;
}
}
else {
vga_pixel color8 = VGA_RGB(R16(color),G16(color),B16(color));
for (j=0; j<h; j++)
{
vga_pixel * dst=&framebuffer[l*fb_stride+x];
for (i=0; i<w; i++)
{
*dst++ = color8;
}
l++;
}
}
}
void PICO_DSP::drawText(int16_t x, int16_t y, const char * text, dsp_pixel fgcolor, dsp_pixel bgcolor, bool doublesize) {
if (gfxmode == MODE_TFT_320x240) {
uint16_t c;
uint16_t * block;
uint16_t * dst;
fgcolor = fgcolor;
bgcolor = bgcolor;
while ((c = *text++)) {
const unsigned char * charpt=&font8x8[c][0];
int l=y;
for (int i=0;i<8;i++)
{
unsigned char bits;
if (doublesize) {
block=blocks[l>>6];
dst=&block[(l&0x3F)*fb_stride+x];
bits = *charpt;
if (bits&0x01) *dst++=fgcolor;
else *dst++=bgcolor;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor;
else *dst++=bgcolor;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor;
else *dst++=bgcolor;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor;
else *dst++=bgcolor;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor;
else *dst++=bgcolor;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor;
else *dst++=bgcolor;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor;
else *dst++=bgcolor;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor;
else *dst++=bgcolor;
l++;
}
block=blocks[l>>6];
dst=&block[(l&0x3F)*fb_stride+x];
bits = *charpt++;
if (bits&0x01) *dst++=fgcolor;
else *dst++=bgcolor;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor;
else *dst++=bgcolor;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor;
else *dst++=bgcolor;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor;
else *dst++=bgcolor;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor;
else *dst++=bgcolor;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor;
else *dst++=bgcolor;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor;
else *dst++=bgcolor;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor;
else *dst++=bgcolor;
l++;
}
x +=8;
}
}
else {
vga_pixel fgcolor8 = VGA_RGB(R16(fgcolor),G16(fgcolor),B16(fgcolor));
vga_pixel bgcolor8 = VGA_RGB(R16(bgcolor),G16(bgcolor),B16(bgcolor));
vga_pixel c;
vga_pixel * dst;
while ((c = *text++)) {
const unsigned char * charpt=&font8x8[c][0];
int l=y;
for (int i=0;i<8;i++)
{
unsigned char bits;
if (doublesize) {
dst=&framebuffer[l*fb_stride+x];
bits = *charpt;
if (bits&0x01) *dst++=fgcolor8;
else *dst++=bgcolor8;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor8;
else *dst++=bgcolor8;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor8;
else *dst++=bgcolor8;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor8;
else *dst++=bgcolor8;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor8;
else *dst++=bgcolor8;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor8;
else *dst++=bgcolor8;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor8;
else *dst++=bgcolor8;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor8;
else *dst++=bgcolor8;
l++;
}
dst=&framebuffer[l*fb_stride+x];
bits = *charpt++;
if (bits&0x01) *dst++=fgcolor8;
else *dst++=bgcolor8;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor8;
else *dst++=bgcolor8;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor8;
else *dst++=bgcolor8;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor8;
else *dst++=bgcolor8;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor8;
else *dst++=bgcolor8;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor8;
else *dst++=bgcolor8;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor8;
else *dst++=bgcolor8;
bits = bits >> 1;
if (bits&0x01) *dst++=fgcolor8;
else *dst++=bgcolor8;
l++;
}
x +=8;
}
}
}
void PICO_DSP::drawSprite(int16_t x, int16_t y, const dsp_pixel *bitmap, uint16_t arx, uint16_t ary, uint16_t arw, uint16_t arh)
{
int bmp_offx = 0;
int bmp_offy = 0;
uint16_t *bmp_ptr;
int w =*bitmap++;
int h = *bitmap++;
if ( (arw == 0) || (arh == 0) ) {
// no crop window
arx = x;
ary = y;
arw = w;
arh = h;
}
else {
if ( (x>(arx+arw)) || ((x+w)<arx) || (y>(ary+arh)) || ((y+h)<ary) ) {
return;
}
// crop area
if ( (x > arx) && (x<(arx+arw)) ) {
arw = arw - (x-arx);
arx = arx + (x-arx);
} else {
bmp_offx = arx;
}
if ( ((x+w) > arx) && ((x+w)<(arx+arw)) ) {
arw -= (arx+arw-x-w);
}
if ( (y > ary) && (y<(ary+arh)) ) {
arh = arh - (y-ary);
ary = ary + (y-ary);
} else {
bmp_offy = ary;
}
if ( ((y+h) > ary) && ((y+h)<(ary+arh)) ) {
arh -= (ary+arh-y-h);
}
}
int l=ary;
bitmap = bitmap + bmp_offy*w + bmp_offx;
if (gfxmode == MODE_TFT_320x240) {
for (int row=0;row<arh; row++)
{
uint16_t * block=blocks[l>>6];
uint16_t * dst=&block[(l&0x3F)*fb_stride+arx];
bmp_ptr = (uint16_t*)bitmap;
for (int col=0;col<arw; col++)
{
*dst++ = *bmp_ptr++;
}
bitmap += w;
l++;
}
}
else {
for (int row=0;row<arh; row++)
{
vga_pixel * dst=&framebuffer[l*fb_stride+arx];
bmp_ptr = (uint16_t *)bitmap;
for (int col=0;col<arw; col++)
{
uint16_t pix= *bmp_ptr++;
*dst++ = VGA_RGB(R16(pix),G16(pix),B16(pix));
}
bitmap += w;
l++;
}
}
}
void PICO_DSP::drawSprite(int16_t x, int16_t y, const dsp_pixel *bitmap) {
drawSprite(x,y,bitmap, 0,0,0,0);
}
void PICO_DSP::writeLine(int width, int height, int y, dsp_pixel *buf) {
if (gfxmode == MODE_TFT_320x240) {
uint16_t * block=blocks[y>>6];
uint16_t * dst=&block[(y&0x3F)*fb_stride];
if (width > fb_width) {
#ifdef TFT_LINEARINT
int delta = (width/(width-fb_width))-1;
int pos = delta;
for (int i=0; i<fb_width; i++)
{
uint16_t val = *buf++;
pos--;
if (pos == 0) {
#ifdef LINEARINT_HACK
val = ((uint32_t)*buf++ + val)/2;
#else
uint16_t val2 = *buf++;
val = RGBVAL16((R16(val)+R16(val2))/2,(G16(val)+G16(val2))/2,(B16(val)+B16(val2))/2);
#endif
pos = delta;
}
*dst++=val;
}
#else
int step = ((width << 8)/fb_width);
int pos = 0;
for (int i=0; i<fb_width; i++)
{
*dst++=buf[pos >> 8];
pos +=step;
}
#endif
}
else if ((width*2) == fb_width)
{
for (int i=0; i<width; i++)
{
*dst++=*buf;
*dst++=*buf++;
}
}
else
{
if (width <= fb_width) {
dst += (fb_width-width)/2;
}
for (int i=0; i<width; i++)
{
*dst++=*buf++;
}
}
}
else {
if ( (height<fb_height) && (height > 2) ) y += (fb_height-height)/2;
vga_pixel * dst=&framebuffer[y*fb_stride];
if (width > fb_width) {
int step = ((width << 8)/fb_width);
int pos = 0;
for (int i=0; i<fb_width; i++)
{
uint16_t pix = buf[pos >> 8];
*dst++ = VGA_RGB(R16(pix),G16(pix),B16(pix));
pos +=step;
}
}
else if ((width*2) == fb_width) {
for (int i=0; i<width; i++)
{
uint16_t pix = *buf++;
vga_pixel col = VGA_RGB(R16(pix),G16(pix),B16(pix));
*dst++= col;
*dst++= col;
}
}
else {
if (width <= fb_width) {
dst += (fb_width-width)/2;
}
for (int i=0; i<width; i++)
{
uint16_t pix = *buf++;
*dst++= VGA_RGB(R16(pix),G16(pix),B16(pix));
}
}
}
}
void PICO_DSP::writeLinePal(int width, int height, int y, uint8_t *buf, dsp_pixel *palette) {
if (gfxmode == MODE_TFT_320x240) {
if ( (height<fb_height) && (height > 2) ) y += (fb_height-height)/2;
uint16_t * block=blocks[y>>6];
uint16_t * dst=&block[(y&0x3F)*fb_stride];
if (width > fb_width) {
#ifdef TFT_LINEARINT
int delta = (width/(width-fb_width))-1;
int pos = delta;
for (int i=0; i<fb_width; i++)
{
uint16_t val = palette[*buf++];
pos--;
if (pos == 0) {
#ifdef LINEARINT_HACK
val = ((uint32_t)palette[*buf++] + val)/2;
#else
uint16_t val2 = *buf++;
val = RGBVAL16((R16(val)+R16(val2))/2,(G16(val)+G16(val2))/2,(B16(val)+B16(val2))/2);
#endif
pos = delta;
}
*dst++=val;
}
#else
int step = ((width << 8)/fb_width);
int pos = 0;
for (int i=0; i<fb_width; i++)
{
*dst++=palette[buf[pos >> 8]];
pos +=step;
}
#endif
}
else if ((width*2) == fb_width) {
for (int i=0; i<width; i++)
{
*dst++=palette[*buf];
*dst++=palette[*buf++];
}
}
else {
if (width <= fb_width) {
dst += (fb_width-width)/2;
}
for (int i=0; i<width; i++)
{
*dst++=palette[*buf++];
}
}
}
else {
if ( (height<fb_height) && (height > 2) ) y += (fb_height-height)/2;
vga_pixel * dst=&framebuffer[y*fb_stride];
if (width > fb_width) {
int step = ((width << 8)/fb_width);
int pos = 0;
for (int i=0; i<fb_width; i++)
{
uint16_t pix = palette[buf[pos >> 8]];
*dst++= VGA_RGB(R16(pix),G16(pix),B16(pix));
pos +=step;
}
}
else if ((width*2) == fb_width) {
for (int i=0; i<width; i++)
{
uint16_t pix = palette[*buf++];
*dst++= VGA_RGB(R16(pix),G16(pix),B16(pix));
*dst++= VGA_RGB(R16(pix),G16(pix),B16(pix));
}
}
else {
if (width <= fb_width) {
dst += (fb_width-width)/2;
}
for (int i=0; i<width; i++)
{
uint16_t pix = palette[*buf++];
*dst++= VGA_RGB(R16(pix),G16(pix),B16(pix));
}
}
}
}
void PICO_DSP::writeScreenPal(int width, int height, int stride, uint8_t *buf, dsp_pixel *palette16) {
uint8_t *src;
int i,j,y=0;
int sy = 0;
int systep=(1<<8);
int h = height;
if (height <= ( (2*fb_height)/3)) {
systep=(systep*height)/fb_height;
h = fb_height;
}
if (gfxmode == MODE_TFT_320x240) {
if (width*2 <= fb_width) {
for (j=0; j<h; j++)
{
uint16_t * block=blocks[y>>6];
uint16_t * dst=&block[(y&0x3F)*fb_stride];
src=&buf[(sy>>8)*stride];
for (i=0; i<width; i++)
{
uint16_t val = palette16[*src++];
*dst++ = val;
*dst++ = val;
}
y++;
sy+=systep;
}
}
else if (width <= fb_width) {
for (j=0; j<h; j++)
{
uint16_t * block=blocks[y>>6];
uint16_t * dst=&block[(y&0x3F)*fb_stride+(fb_width-width)/2];
src=&buf[(sy>>8)*stride];
for (i=0; i<width; i++)
{
uint16_t val = palette16[*src++];
*dst++ = val;
}
y++;
sy+=systep;
}
}
}
else { // VGA
if (width*2 <= fb_width) {
for (j=0; j<h; j++)
{
vga_pixel * dst=&framebuffer[y*fb_stride];
src=&buf[(sy>>8)*stride];
for (i=0; i<width; i++)
{
uint16_t pix = palette16[*src++];
*dst++ = VGA_RGB(R16(pix),G16(pix),B16(pix));
*dst++ = VGA_RGB(R16(pix),G16(pix),B16(pix));
}
y++;
sy+=systep;
}
}
else if (width <= fb_width) {
for (j=0; j<h; j++)
{
vga_pixel * dst=&framebuffer[y*fb_stride+(fb_width-width)/2];
src=&buf[(sy>>8)*stride];
for (i=0; i<width; i++)
{
uint16_t pix = palette16[*src++];
*dst++ = VGA_RGB(R16(pix),G16(pix),B16(pix));
}
y++;
sy+=systep;
}
}
}
}
/***********************************************************************************************
No DMA functions
***********************************************************************************************/
void PICO_DSP::fillScreenNoDma(dsp_pixel color) {
if (gfxmode == MODE_TFT_320x240) {
digitalWrite(_cs, 0);
setArea(0, 0, TFT_REALWIDTH-1, TFT_REALHEIGHT-1);
int i,j;
for (j=0; j<TFT_REALHEIGHT; j++)
{
for (i=0; i<TFT_REALWIDTH; i++) {
//digitalWrite(_dc, 1);
SPItransfer16(color);
}
}
#ifdef ILI9341
digitalWrite(_dc, 0);
SPItransfer(ILI9341_SLPOUT);
digitalWrite(_dc, 1);
#endif
digitalWrite(_cs, 1);
setArea(0, 0, (TFT_REALWIDTH-1), (TFT_REALHEIGHT-1));
}
else {
fillScreen(color);
}
}
void PICO_DSP::drawRectNoDma(int16_t x, int16_t y, int16_t w, int16_t h, dsp_pixel color) {
if (gfxmode == MODE_TFT_320x240) {
digitalWrite(_cs, 0);
setArea(x,y,x+w-1,y+h-1);
int i;
for (i=0; i<(w*h); i++)
{
SPItransfer16(color);
}
#ifdef ILI9341
digitalWrite(_dc, 0);
SPItransfer(ILI9341_SLPOUT);
digitalWrite(_dc, 1);
#endif
digitalWrite(_cs, 1);
setArea(0, 0, (TFT_REALWIDTH-1), (TFT_REALHEIGHT-1));
}
else {
drawRect(x, y, w, h, color);
}
}
void PICO_DSP::drawSpriteNoDma(int16_t x, int16_t y, const dsp_pixel *bitmap) {
drawSpriteNoDma(x,y,bitmap, 0,0,0,0);
}
void PICO_DSP::drawSpriteNoDma(int16_t x, int16_t y, const dsp_pixel *bitmap, uint16_t arx, uint16_t ary, uint16_t arw, uint16_t arh)
{
if (gfxmode == MODE_TFT_320x240) {
int bmp_offx = 0;
int bmp_offy = 0;
uint16_t *bmp_ptr;
int w =*bitmap++;
int h =*bitmap++;
if ( (arw == 0) || (arh == 0) ) {
// no crop window
arx = x;
ary = y;
arw = w;
arh = h;
}
else {
if ( (x>(arx+arw)) || ((x+w)<arx) || (y>(ary+arh)) || ((y+h)<ary) ) {
return;
}
// crop area
if ( (x > arx) && (x<(arx+arw)) ) {
arw = arw - (x-arx);
arx = arx + (x-arx);
} else {
bmp_offx = arx;
}
if ( ((x+w) > arx) && ((x+w)<(arx+arw)) ) {
arw -= (arx+arw-x-w);
}
if ( (y > ary) && (y<(ary+arh)) ) {
arh = arh - (y-ary);
ary = ary + (y-ary);
} else {
bmp_offy = ary;
}
if ( ((y+h) > ary) && ((y+h)<(ary+arh)) ) {
arh -= (ary+arh-y-h);
}
}
digitalWrite(_cs, 0);
setArea(arx, ary, arx+arw-1, ary+arh-1);
bitmap = bitmap + bmp_offy*w + bmp_offx;
for (int row=0;row<arh; row++)
{
bmp_ptr = (uint16_t*)bitmap;
for (int col=0;col<arw; col++)
{
SPItransfer16(*bmp_ptr++);
}
bitmap += w;
}
#ifdef ILI9341
digitalWrite(_dc, 0);
SPItransfer(ILI9341_SLPOUT);
digitalWrite(_dc, 1);
#endif
setArea(0, 0, TFT_REALWIDTH-1, TFT_REALHEIGHT-1);
digitalWrite(_cs, 1);
}
else {
drawSprite(x, y, bitmap, arx, ary, arw, arh);
}
}
void PICO_DSP::drawTextNoDma(int16_t x, int16_t y, const char * text, dsp_pixel fgcolor, dsp_pixel bgcolor, bool doublesize) {
if (gfxmode == MODE_TFT_320x240) {
uint16_t c;
while ((c = *text++)) {
const unsigned char * charpt=&font8x8[c][0];
digitalWrite(_cs, 0);
setArea(x,y,x+7,y+(doublesize?15:7));
for (int i=0;i<8;i++)
{
unsigned char bits;
if (doublesize) {
bits = *charpt;
if (bits&0x01) SPItransfer16(fgcolor);
else SPItransfer16(bgcolor);
bits = bits >> 1;
if (bits&0x01) SPItransfer16(fgcolor);
else SPItransfer16(bgcolor);
bits = bits >> 1;
if (bits&0x01) SPItransfer16(fgcolor);
else SPItransfer16(bgcolor);
bits = bits >> 1;
if (bits&0x01) SPItransfer16(fgcolor);
else SPItransfer16(bgcolor);
bits = bits >> 1;
if (bits&0x01) SPItransfer16(fgcolor);
else SPItransfer16(bgcolor);
bits = bits >> 1;
if (bits&0x01) SPItransfer16(fgcolor);
else SPItransfer16(bgcolor);
bits = bits >> 1;
if (bits&0x01) SPItransfer16(fgcolor);
else SPItransfer16(bgcolor);
bits = bits >> 1;
if (bits&0x01) SPItransfer16(fgcolor);
else SPItransfer16(bgcolor);
}
bits = *charpt++;
if (bits&0x01) SPItransfer16(fgcolor);
else SPItransfer16(bgcolor);
bits = bits >> 1;
if (bits&0x01) SPItransfer16(fgcolor);
else SPItransfer16(bgcolor);
bits = bits >> 1;
if (bits&0x01) SPItransfer16(fgcolor);
else SPItransfer16(bgcolor);
bits = bits >> 1;
if (bits&0x01) SPItransfer16(fgcolor);
else SPItransfer16(bgcolor);
bits = bits >> 1;
if (bits&0x01) SPItransfer16(fgcolor);
else SPItransfer16(bgcolor);
bits = bits >> 1;
if (bits&0x01) SPItransfer16(fgcolor);
else SPItransfer16(bgcolor);
bits = bits >> 1;
if (bits&0x01) SPItransfer16(fgcolor);
else SPItransfer16(bgcolor);
bits = bits >> 1;
if (bits&0x01) SPItransfer16(fgcolor);
else SPItransfer16(bgcolor);
}
x +=8;
#ifdef ILI9341
digitalWrite(_dc, 0);
SPItransfer(ILI9341_SLPOUT);
digitalWrite(_dc, 1);
#endif
digitalWrite(_cs, 1);
}
digitalWrite(_cs, 0);
setArea(0, 0, (TFT_REALWIDTH-1), (TFT_REALHEIGHT-1));
digitalWrite(_cs, 1);
}
else {
drawText(x, y, text, fgcolor, bgcolor, doublesize);
}
}
#ifdef HAS_SND
#include "hardware/dma.h"
#include "hardware/gpio.h"
#include "hardware/irq.h"
#include "hardware/pwm.h"
#include "pico/float.h"
#include <string.h>
#include <stdio.h>
#include "pico/audio_i2s.h"
#include "hardware/i2c.h"
static void (*fillsamples)(audio_sample * stream, int len) = nullptr;
/********************************
* Initialization
********************************/
struct audio_buffer_pool *producer_pool;
#if AUDIO_8BIT
_Static_assert(!AUDIO_8BIT, "only configured for 16 bit audio");
#endif
static audio_format_t audio_format = {
.sample_freq = SOUNDRATE,
.format = AUDIO_BUFFER_FORMAT_PCM_S16,
.channel_count = 1,
};
const struct audio_i2s_config config =
{
.data_pin = PICO_AUDIO_I2S_DATA_PIN,
.clock_pin_base = PICO_AUDIO_I2S_CLOCK_PIN_BASE,
.dma_channel = AUD_DMA_CHANNEL,
.pio_sm = 0,
};
static struct audio_buffer_format producer_format = {
.format = &audio_format,
.sample_stride = 2
};
#define I2C_ADDR 0x18
#define DEBUG_I2C (0)
static void writeRegister(uint8_t reg, uint8_t value) {
uint8_t buf[2];
buf[0] = reg;
buf[1] = value;
int res = i2c_write_timeout_us(i2c0, I2C_ADDR, buf, sizeof(buf), /* nostop */ false, 1000);
if (res != 2) {
panic("i2c_write_timeout failed: res=%d\n", res);
}
if(DEBUG_I2C)
printf("Write Reg: %d = 0x%x\n", reg, value);
}
static uint8_t readRegister(uint8_t reg) {
uint8_t buf[1];
buf[0] = reg;
int res = i2c_write_timeout_us(i2c0, I2C_ADDR, buf, sizeof(buf), /* nostop */ true, 1000);
if (res != 1) {
if(DEBUG_I2C)
printf("res=%d\n", res);
panic("i2c_write_timeout failed: res=%d\n", res);
}
res = i2c_read_timeout_us(i2c0, I2C_ADDR, buf, sizeof(buf), /* nostop */ false, 1000);
if (res != 1) {
if(DEBUG_I2C)
printf("res=%d\n", res);
panic("i2c_read_timeout failed: res=%d\n", res);
}
uint8_t value = buf[0];
if(DEBUG_I2C)
printf("Read Reg: %d = 0x%x\n", reg, value);
return value;
}
static void modifyRegister(uint8_t reg, uint8_t mask, uint8_t value) {
uint8_t current = readRegister(reg);
if(DEBUG_I2C)
printf("Modify Reg: %d = [Before: 0x%x] with mask 0x%x and value 0x%x\n", reg, current, mask, value);
uint8_t new_value = (current & ~mask) | (value & mask);
writeRegister(reg, new_value);
}
static void setPage(uint8_t page) {
printf("Set page %d\n", page);
writeRegister(0x00, page);
}
static void Wire_begin() {
i2c_init(i2c0, 100000);
gpio_set_function(20, GPIO_FUNC_I2C);
gpio_set_function(21, GPIO_FUNC_I2C);
}
static void i2s_audio_init(void)
{
gpio_init(22);
gpio_set_dir(22, true);
gpio_put(22, true); // allow i2s to come out of reset
Wire_begin();
sleep_ms(1000);
if(DEBUG_I2C)
printf("initialize codec\n");
// Reset codec
writeRegister(0x01, 0x01);
sleep_ms(10);
// Interface Control
modifyRegister(0x1B, 0xC0, 0x00);
modifyRegister(0x1B, 0x30, 0x00);
// Clock MUX and PLL settings
modifyRegister(0x04, 0x03, 0x03);
modifyRegister(0x04, 0x0C, 0x04);
writeRegister(0x06, 0x20); // PLL J
writeRegister(0x08, 0x00); // PLL D LSB
writeRegister(0x07, 0x00); // PLL D MSB
modifyRegister(0x05, 0x0F, 0x02); // PLL P/R
modifyRegister(0x05, 0x70, 0x10);
// DAC/ADC Config
modifyRegister(0x0B, 0x7F, 0x08); // NDAC
modifyRegister(0x0B, 0x80, 0x80);
modifyRegister(0x0C, 0x7F, 0x02); // MDAC
modifyRegister(0x0C, 0x80, 0x80);
modifyRegister(0x12, 0x7F, 0x08); // NADC
modifyRegister(0x12, 0x80, 0x80);
modifyRegister(0x13, 0x7F, 0x02); // MADC
modifyRegister(0x13, 0x80, 0x80);
// PLL Power Up
modifyRegister(0x05, 0x80, 0x80);
// Headset and GPIO Config
setPage(1);
modifyRegister(0x2e, 0xFF, 0x0b);
setPage(0);
modifyRegister(0x43, 0x80, 0x80); // Headset Detect
modifyRegister(0x30, 0x80, 0x80); // INT1 Control
modifyRegister(0x33, 0x3C, 0x14); // GPIO1
// DAC Setup
modifyRegister(0x3F, 0xC0, 0xC0);
// DAC Routing
setPage(1);
modifyRegister(0x23, 0xC0, 0x40);
modifyRegister(0x23, 0x0C, 0x04);
// DAC Volume Control
setPage(0);
modifyRegister(0x40, 0x0C, 0x00);
writeRegister(0x41, 0x28); // Left DAC Vol
writeRegister(0x42, 0x28); // Right DAC Vol
// ADC Setup
modifyRegister(0x51, 0x80, 0x80);
modifyRegister(0x52, 0x80, 0x00);
writeRegister(0x53, 0x68); // ADC Volume
// Headphone and Speaker Setup
setPage(1);
modifyRegister(0x1F, 0xC0, 0xC0); // HP Driver
modifyRegister(0x28, 0x04, 0x04); // HP Left Gain
modifyRegister(0x29, 0x04, 0x04); // HP Right Gain
writeRegister(0x24, 0x0A); // Left Analog HP
writeRegister(0x25, 0x0A); // Right Analog HP
modifyRegister(0x28, 0x78, 0x40); // HP Left Gain
modifyRegister(0x29, 0x78, 0x40); // HP Right Gain
// Speaker Amp
modifyRegister(0x20, 0x80, 0x80);
modifyRegister(0x2A, 0x04, 0x04);
modifyRegister(0x2A, 0x18, 0x08);
writeRegister(0x26, 0x0A);
// Return to page 0
setPage(0);
if(DEBUG_I2C)
printf("Initialization complete!\n");
// Read all registers for verification
if(DEBUG_I2C) {
printf("Reading all registers for verification:\n");
setPage(0);
readRegister(0x00); // AIC31XX_PAGECTL
readRegister(0x01); // AIC31XX_RESET
readRegister(0x03); // AIC31XX_OT_FLAG
readRegister(0x04); // AIC31XX_CLKMUX
readRegister(0x05); // AIC31XX_PLLPR
readRegister(0x06); // AIC31XX_PLLJ
readRegister(0x07); // AIC31XX_PLLDMSB
readRegister(0x08); // AIC31XX_PLLDLSB
readRegister(0x0B); // AIC31XX_NDAC
readRegister(0x0C); // AIC31XX_MDAC
readRegister(0x0D); // AIC31XX_DOSRMSB
readRegister(0x0E); // AIC31XX_DOSRLSB
readRegister(0x10); // AIC31XX_MINI_DSP_INPOL
readRegister(0x12); // AIC31XX_NADC
readRegister(0x13); // AIC31XX_MADC
readRegister(0x14); // AIC31XX_AOSR
readRegister(0x19); // AIC31XX_CLKOUTMUX
readRegister(0x1A); // AIC31XX_CLKOUTMVAL
readRegister(0x1B); // AIC31XX_IFACE1
readRegister(0x1C); // AIC31XX_DATA_OFFSET
readRegister(0x1D); // AIC31XX_IFACE2
readRegister(0x1E); // AIC31XX_BCLKN
readRegister(0x1F); // AIC31XX_IFACESEC1
readRegister(0x20); // AIC31XX_IFACESEC2
readRegister(0x21); // AIC31XX_IFACESEC3
readRegister(0x22); // AIC31XX_I2C
readRegister(0x24); // AIC31XX_ADCFLAG
readRegister(0x25); // AIC31XX_DACFLAG1
readRegister(0x26); // AIC31XX_DACFLAG2
readRegister(0x27); // AIC31XX_OFFLAG
readRegister(0x2C); // AIC31XX_INTRDACFLAG
readRegister(0x2D); // AIC31XX_INTRADCFLAG
readRegister(0x2E); // AIC31XX_INTRDACFLAG2
readRegister(0x2F); // AIC31XX_INTRADCFLAG2
readRegister(0x30); // AIC31XX_INT1CTRL
readRegister(0x31); // AIC31XX_INT2CTRL
readRegister(0x33); // AIC31XX_GPIO1
readRegister(0x3C); // AIC31XX_DACPRB
readRegister(0x3D); // AIC31XX_ADCPRB
readRegister(0x3F); // AIC31XX_DACSETUP
readRegister(0x40); // AIC31XX_DACMUTE
readRegister(0x41); // AIC31XX_LDACVOL
readRegister(0x42); // AIC31XX_RDACVOL
readRegister(0x43); // AIC31XX_HSDETECT
readRegister(0x51); // AIC31XX_ADCSETUP
readRegister(0x52); // AIC31XX_ADCFGA
readRegister(0x53); // AIC31XX_ADCVOL
setPage(1);
readRegister(0x1F); // AIC31XX_HPDRIVER
readRegister(0x20); // AIC31XX_SPKAMP
readRegister(0x21); // AIC31XX_HPPOP
readRegister(0x22); // AIC31XX_SPPGARAMP
readRegister(0x23); // AIC31XX_DACMIXERROUTE
readRegister(0x24); // AIC31XX_LANALOGHPL
readRegister(0x25); // AIC31XX_RANALOGHPR
readRegister(0x26); // AIC31XX_LANALOGSPL
readRegister(0x27); // AIC31XX_RANALOGSPR
readRegister(0x28); // AIC31XX_HPLGAIN
readRegister(0x29); // AIC31XX_HPRGAIN
readRegister(0x2A); // AIC31XX_SPLGAIN
readRegister(0x2B); // AIC31XX_SPRGAIN
readRegister(0x2C); // AIC31XX_HPCONTROL
readRegister(0x2E); // AIC31XX_MICBIAS
readRegister(0x2F); // AIC31XX_MICPGA
readRegister(0x30); // AIC31XX_MICPGAPI
readRegister(0x31); // AIC31XX_MICPGAMI
readRegister(0x32); // AIC31XX_MICPGACM
setPage(3);
readRegister(0x10); // AIC31XX_TIMERDIVIDER
}
const struct audio_format *output_format = audio_i2s_setup(&audio_format, &config);
assert(output_format);
if (!output_format) {
panic("PicoAudio: Unable to open audio device.\n");
}
assert(producer_pool);
bool ok = audio_i2s_connect(producer_pool);
assert(ok);
audio_i2s_set_enabled(true);
}
static void i2s_audio_handle_buffer(void) {
audio_buffer *buffer = take_audio_buffer(producer_pool, true);
fillsamples(reinterpret_cast<audio_sample*>(buffer->buffer->bytes), buffer->max_sample_count);
buffer->sample_count = buffer->max_sample_count;
give_audio_buffer(producer_pool, buffer);
}
static void core1_func_tft() {
i2s_audio_init();
while (true) {
if (producer_pool && fillsamples) i2s_audio_handle_buffer();
__dmb();
}
}
void PICO_DSP::begin_audio(int samplesize, void (*callback)(short * stream, int len))
{
if (!callback) return;
producer_pool = audio_new_producer_pool(&producer_format, 3, samplesize);
fillsamples = callback;
multicore_launch_core1(core1_func_tft);
}
void PICO_DSP::end_audio()
{
}
void * PICO_DSP::get_buffer_audio(void)
{
return NULL; // not implemented
}
#endif
Reference in a new issue View git blame Copy permalink