lishanpi/app/main.cpp

#include "gd32f4xx.h"
#include "hardware_init.h"
#include "led_driver.h"
#include "uart_driver.h"
#include "systick.h"
#include "sdram_manager.h"
#include "flash_manager.h"
#include "lcd.h"
#include "touch.h"
#include <cstdio>
#include <cstring>

__attribute__((section(".sdram"))) uint8_t sdram_big_buffer[1024 * 1024];

Led led0(GpioPort::E, 0x08);
Led led1(GpioPort::D, 0x80);
Led led2(GpioPort::G, 0x08);
Led led3(GpioPort::A, 0x20);

static void led_pattern(uint8_t p)
{
    led0.off();
    led1.off();
    led2.off();
    led3.off();
    if (p & 0x01) led0.on();
    if (p & 0x02) led1.on();
    if (p & 0x04) led2.on();
    if (p & 0x08) led3.on();
}

USART uart0(UartPort::_0, 9600);

int main(void)
{
    led0.init();
    led1.init();
    led2.init();
    led3.init();
    led_pattern(0x01);

    USART::setDefault(&uart0);
    led_pattern(0x03);

    printf("\r\n===== LSPi Board Boot =====\r\n");

    uint32_t cs = RCU_CFG0 & RCU_CFG0_SCS;
    printf("Clock source: ");
    if (cs == RCU_SCSS_IRC16M)
        printf("IRC16M (16MHz)\r\n");
    else if (cs == RCU_SCSS_HXTAL)
        printf("HXTAL (25MHz)\r\n");
    else if (cs == RCU_SCSS_PLLP)
        printf("PLL (168MHz)\r\n");
    else
        printf("UNKNOWN\r\n");
    printf("SystemCoreClock: %lu Hz\r\n", SystemCoreClock);

    led_pattern(0x05);
    HardwareInit::init();
    led_pattern(0x07);

    uart0.reinit(9600);

    cs = RCU_CFG0 & RCU_CFG0_SCS;
    printf("System clock switched to: ");
    if (cs == RCU_SCSS_PLLP)
        printf("PLL (168MHz)\r\n");
    else
        printf("UNKNOWN\r\n");
    printf("SystemCoreClock: %lu Hz\r\n", SystemCoreClock);

    led_pattern(0x09);
    systick_config();
    delay_1ms(10);

    printf("Initializing SDRAM...\r\n");
    led_pattern(0x0B);
    {
        RetCode ret = SdramManager::instance().init();
        if (ret != RET_OK) {
            printf("  SDRAM init failed: %d\r\n", ret);
        } else {
            printf("  SDRAM init OK\r\n");
        }
    }

    printf("Initializing Flash...\r\n");
    led_pattern(0x0D);
    {
        RetCode ret = FlashManager::instance().init();
        if (ret != RET_OK) {
            printf("  Flash init failed: %d\r\n", ret);
        } else {
            printf("  Flash init OK (%lu KB total, %lu KB/sector)\r\n",
                   FlashManager::instance().total_size() / 1024,
                   FlashManager::instance().sector_size() / 1024);
        }
    }

    printf("Initializing LCD...\r\n");
    {
        RetCode ret = Lcd::instance().init();
        if (ret != RET_OK) {
            printf("  LCD init failed: %d\r\n", ret);
        } else {
            printf("  LCD init OK (%s)\r\n", Lcd::instance().idString());
        }
    }

    printf("Initializing Touch...\r\n");
    {
        RetCode ret = GT1151::instance().init();
        if (ret != RET_OK) {
            printf("  Touch init failed: %d\r\n", ret);
        } else {
            printf("  Touch init OK\r\n");
        }
    }

    led_pattern(0x0F);
    printf("\r\n===== System Ready =====\r\n");
    printf("CPU: 168MHz, SDRAM: 32MB, Flash: 1MB\r\n\r\n");

    Lcd::instance().clear(Lcd::BLACK);
    Lcd::instance().setForeground(Lcd::CYAN);
    Lcd::instance().showString(10, 10, 460, 24, 16, 0, (uint8_t *)"LSPi System Ready");
    Lcd::instance().setForeground(Lcd::GRAY);
    Lcd::instance().showString(10, 30, 460, 20, 16, 0, (uint8_t *)"168MHz | 32MB SDRAM | 1MB Flash");

    uint32_t tick = 0;
    while (1)
    {
        led0.toggle();
        delay_1ms(500);

        tick++;
        if (tick % 10 == 0) {
            printf(".");
        }
        if (tick % 120 == 0) {
            printf(" [%lu s]\r\n", tick / 2);
        }
    }
}