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pimoroni-pico/drivers/dv_display/dv_display.cpp

376 lines
10 KiB
C++
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#include "dv_display.hpp"
#include "swd_load.hpp"
#include "pico-stick-wide.h"
#include <cstdlib>
#include <math.h>
#include <string.h>
#ifndef MICROPY_BUILD_TYPE
#define mp_printf(_, ...) printf(__VA_ARGS__);
#else
extern "C" {
#include "py/runtime.h"
}
#endif
namespace pimoroni {
void DVDisplay::init() {
uint8_t res_mode = 0xFF;
uint16_t full_width = width;
uint16_t full_height = height;
if (width < 640 || (width == 640 && (height == 360 || height == 720))) {
h_repeat = 2;
full_width *= 2;
}
if (height < 400) {
v_repeat = 2;
full_height *= 2;
}
if (full_width == 640) {
res_mode = 0;
}
else if (full_width == 720) {
if (full_height == 480) res_mode = 1;
else if (full_height == 400) res_mode = 2;
else if (full_height == 576) res_mode = 3;
}
else if (full_width == 800) {
if (full_height == 600) res_mode = 0x10;
else if (full_height == 480) res_mode = 0x11;
else if (full_height == 450) res_mode = 0x12;
}
else if (full_width == 960) {
if (full_height == 540) res_mode = 0x14;
}
else if (full_width == 1280) {
if (full_height == 720) res_mode = 0x15;
}
if (res_mode == 0xFF) {
mp_printf(&mp_plat_print, "Resolution %dx%d is not supported. Will use 720x480.\n", width, height);
}
gpio_init(RAM_SEL);
gpio_put(RAM_SEL, 0);
gpio_set_dir(RAM_SEL, GPIO_OUT);
gpio_init(VSYNC);
gpio_set_dir(VSYNC, GPIO_IN);
sleep_ms(200);
swd_load_program(section_addresses, section_data, section_data_len, sizeof(section_addresses) / sizeof(section_addresses[0]), 0x20000001, 0x15004000, true);
ram.init();
bank = 0;
write_header();
sleep_us(100);
gpio_put(RAM_SEL, 1);
ram.init();
bank = 1;
write_header();
sleep_us(100);
bank = 0;
gpio_put(RAM_SEL, 0);
sleep_ms(100);
mp_printf(&mp_plat_print, "Start I2C\n");
if (res_mode != 0xFF) {
i2c.reg_write_uint8(I2C_ADDR, I2C_REG_SET_RES, res_mode);
}
i2c.reg_write_uint8(I2C_ADDR, I2C_REG_START, 1);
mp_printf(&mp_plat_print, "Started\n");
}
void DVDisplay::flip() {
if (mode == MODE_PALETTE) {
write_palette();
if (pixel_buffer_location.y != -1) {
ram.write(point_to_address_palette(pixel_buffer_location), pixel_buffer, pixel_buffer_x);
pixel_buffer_location.y = -1;
}
}
else if (pixel_buffer_location.y != -1) {
ram.write(point_to_address(pixel_buffer_location), pixel_buffer, pixel_buffer_x << 1);
pixel_buffer_location.y = -1;
}
bank ^= 1;
ram.wait_for_finish_blocking();
while (gpio_get(VSYNC) == 0);
gpio_put(RAM_SEL, bank);
if (rewrite_header) {
write_header();
rewrite_header = false;
}
}
uint8_t DVDisplay::get_gpio() {
return i2c.reg_read_uint8(I2C_ADDR, I2C_REG_GPIO);
}
uint8_t DVDisplay::get_gpio_hi() {
return i2c.reg_read_uint8(I2C_ADDR, I2C_REG_GPIO_HI);
}
void DVDisplay::i2c_modify_bit(uint8_t reg, uint bit, bool enable) {
uint8_t val = i2c.reg_read_uint8(I2C_ADDR, reg);
if (enable) val |= 1u << bit;
else val &= ~(1u << bit);
i2c.reg_write_uint8(I2C_ADDR, reg, val);
}
void DVDisplay::set_gpio_hi_dir(uint pin, bool output) {
i2c_modify_bit(I2C_REG_GPIO_HI_OE, pin, output);
}
void DVDisplay::set_gpio_hi_dir_all(uint8_t val) {
i2c.reg_write_uint8(I2C_ADDR, I2C_REG_GPIO_HI_OE, val);
}
void DVDisplay::set_gpio_hi(uint pin, bool on) {
i2c_modify_bit(I2C_REG_GPIO_HI_OUT, pin, on);
}
void DVDisplay::set_gpio_hi_all(uint8_t val) {
i2c.reg_write_uint8(I2C_ADDR, I2C_REG_GPIO_HI_OUT, val);
}
void DVDisplay::set_gpio_hi_pull_up(uint pin, bool on) {
i2c_modify_bit(I2C_REG_GPIO_HI_PULL_UP, pin, on);
}
void DVDisplay::set_gpio_hi_pull_up_all(uint8_t val) {
i2c.reg_write_uint8(I2C_ADDR, I2C_REG_GPIO_HI_PULL_UP, val);
}
void DVDisplay::set_gpio_hi_pull_down(uint pin, bool on) {
i2c_modify_bit(I2C_REG_GPIO_HI_PULL_DOWN, pin, on);
}
void DVDisplay::set_gpio_hi_pull_down_all(uint8_t val) {
i2c.reg_write_uint8(I2C_ADDR, I2C_REG_GPIO_HI_PULL_DOWN, val);
}
void DVDisplay::set_led_level(uint8_t level) {
i2c.reg_write_uint8(I2C_ADDR, I2C_REG_LED, level | 0x80);
}
void DVDisplay::set_led_heartbeat() {
i2c.reg_write_uint8(I2C_ADDR, I2C_REG_LED, 2);
}
void DVDisplay::get_edid(uint8_t* edid) {
i2c.read_bytes(I2C_ADDR, I2C_REG_EDID, edid, 128);
}
void DVDisplay::write(uint32_t address, size_t len, const uint16_t colour)
{
uint32_t val = colour | ((uint32_t)colour << 16);
ram.write_repeat(address, val, len << 1);
}
void DVDisplay::write(uint32_t address, size_t len, const RGB888 colour)
{
const int VAL_BUFFER_LEN = 60;
const int VAL_BUFFER_LEN_IN_PIXELS = (VAL_BUFFER_LEN / 3) * 4;
uint32_t vals[VAL_BUFFER_LEN];
for (int i = 0, j = 0; i < VAL_BUFFER_LEN_IN_PIXELS && i < (int)len; i += 4) {
vals[j++] = colour | (colour << 24);
vals[j++] = (colour >> 8) | (colour << 16);
vals[j++] = (colour >> 16) | (colour << 8);
}
for (int len_bytes = len * 3; len_bytes > 0; len_bytes -= VAL_BUFFER_LEN_IN_PIXELS * 3) {
uint len_to_write = std::min(len_bytes, VAL_BUFFER_LEN_IN_PIXELS * 3);
ram.write(address, vals, len_to_write);
address += len_to_write;
}
ram.wait_for_finish_blocking();
}
void DVDisplay::read(uint32_t address, size_t len, uint16_t *data)
{
ram.read_blocking(address, (uint32_t*)data, (len + 1) >> 1);
}
void DVDisplay::write(uint32_t address, size_t len, const uint8_t colour)
{
uint32_t val = colour | ((uint32_t)colour << 16);
val |= val << 8;
ram.write_repeat(address, val, len);
}
void DVDisplay::read(uint32_t address, size_t len, uint8_t *data)
{
ram.read_blocking(address, (uint32_t*)data, len);
}
void DVDisplay::write_pixel(const Point &p, uint16_t colour)
{
if (pixel_buffer_location.y == p.y && pixel_buffer_location.x + pixel_buffer_x == p.x) {
if (pixel_buffer_x & 1) pixel_buffer[pixel_buffer_x >> 1] |= (uint32_t)colour << 16;
else pixel_buffer[pixel_buffer_x >> 1] = colour;
if (++pixel_buffer_x == PIXEL_BUFFER_LEN_IN_WORDS * 2) {
ram.write(point_to_address(pixel_buffer_location), pixel_buffer, PIXEL_BUFFER_LEN_IN_WORDS * 4);
pixel_buffer_location.y = -1;
}
return;
}
else if (pixel_buffer_location.y != -1) {
ram.write(point_to_address(pixel_buffer_location), pixel_buffer, pixel_buffer_x << 1);
}
pixel_buffer_location = p;
pixel_buffer_x = 1;
pixel_buffer[0] = colour;
}
void DVDisplay::write_pixel_span(const Point &p, uint l, uint16_t colour)
{
write(point_to_address(p), l, colour);
}
void DVDisplay::write_pixel(const Point &p, RGB888 colour)
{
ram.write(point_to_address24(p), &colour, 3);
}
void DVDisplay::write_pixel_span(const Point &p, uint l, RGB888 colour)
{
write(point_to_address24(p), l, colour);
}
void DVDisplay::write_pixel_span(const Point &p, uint l, uint16_t *data)
{
uint32_t offset = 0;
if (((uintptr_t)data & 0x2) != 0) {
uint32_t val = *data++;
ram.write(point_to_address(p), &val, 2);
--l;
offset = 2;
}
if (l > 0) {
ram.write(point_to_address(p) + offset, (uint32_t*)data, l << 1);
}
}
void DVDisplay::read_pixel_span(const Point &p, uint l, uint16_t *data)
{
read(point_to_address(p), l, data);
}
void DVDisplay::set_mode(Mode new_mode)
{
mode = new_mode;
rewrite_header = true;
write_header();
if (mode == MODE_PALETTE) {
write_palette();
}
}
void DVDisplay::set_palette(RGB888 new_palette[PALETTE_SIZE])
{
for (int i = 0; i < PALETTE_SIZE; ++i) {
set_palette_colour(i, new_palette[i]);
}
}
void DVDisplay::set_palette_colour(uint8_t entry, RGB888 colour)
{
palette[entry * 3] = (colour >> 16) & 0xFF;
palette[entry * 3 + 1] = (colour >> 8) & 0xFF;
palette[entry * 3 + 2] = colour & 0xFF;
}
void DVDisplay::write_palette()
{
uint addr = (height + 7) * 4;
ram.write(addr, (uint32_t*)palette, PALETTE_SIZE * 3);
}
void DVDisplay::write_palette_pixel(const Point &p, uint8_t colour)
{
if (pixel_buffer_location.y == p.y && pixel_buffer_location.x + pixel_buffer_x == p.x) {
if (pixel_buffer_x & 3) pixel_buffer[pixel_buffer_x >> 2] |= (uint32_t)colour << ((pixel_buffer_x & 3) << 3);
else pixel_buffer[pixel_buffer_x >> 2] = colour;
if (++pixel_buffer_x == PIXEL_BUFFER_LEN_IN_WORDS * 4) {
ram.write(point_to_address_palette(pixel_buffer_location), pixel_buffer, PIXEL_BUFFER_LEN_IN_WORDS * 4);
pixel_buffer_location.y = -1;
}
return;
}
else if (pixel_buffer_location.y != -1) {
ram.write(point_to_address_palette(pixel_buffer_location), pixel_buffer, pixel_buffer_x);
}
pixel_buffer_location = p;
pixel_buffer_x = 1;
pixel_buffer[0] = colour;
}
void DVDisplay::write_palette_pixel_span(const Point &p, uint l, uint8_t colour)
{
write(point_to_address_palette(p), l, colour);
}
void DVDisplay::write_palette_pixel_span(const Point &p, uint l, uint8_t* data)
{
uint32_t offset = 0;
while (((uintptr_t)data & 0x3) != 0 && l > 0) {
uint32_t val = *data++;
ram.write(point_to_address_palette(p), &val, 1);
--l;
offset++;
}
if (l > 0) {
ram.write(point_to_address_palette(p) + offset, (uint32_t*)data, l);
}
}
void DVDisplay::read_palette_pixel_span(const Point &p, uint l, uint8_t *data)
{
read(point_to_address_palette(p), l, data);
}
void DVDisplay::write_header_preamble()
{
uint32_t buf[8];
uint32_t full_width = width * h_repeat;
buf[0] = 0x4F434950;
buf[1] = 0x01000101 + ((uint32_t)v_repeat << 16);
buf[2] = full_width << 16;
buf[3] = (uint32_t)height << 16;
buf[4] = 0x00000001;
buf[5] = 0x00010000 + height + (bank << 24);
buf[6] = 0x00000001;
ram.write(0, buf, 7 * 4);
ram.wait_for_finish_blocking();
}
void DVDisplay::write_header()
{
write_header_preamble();
uint32_t buf[8];
uint addr = 4 * 7;
uint line_type = 0x80000000u + ((uint)mode << 28);
mp_printf(&mp_plat_print, "Write header, line type %08x\n", line_type);
for (int i = 0; i < height; i += 8) {
for (int j = 0; j < 8; ++j) {
buf[j] = line_type + ((uint32_t)h_repeat << 24) + ((i + j) * width * 6) + base_address;
}
ram.write(addr, buf, 8 * 4);
ram.wait_for_finish_blocking();
addr += 4 * 8;
}
}
}
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