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