feat: 集成RT-Thread Nano系统，添加LCD DMA驱动，完善任务框架

app/main.cpp

@@ -7,8 +7,14 @@
 #include "flash_manager.h"
 #include "lcd.h"
 #include "touch.h"
+#include "monitor_task.h"
+#include "work_task.h"
 #include <cstdio>
 #include <cstring>
+#include <rthw.h>
+#include <rtthread.h>
+
+extern "C" void rt_hw_board_init(void);
 
 __attribute__((section(".sdram"))) uint8_t sdram_big_buffer[1024 * 1024];
 
@@ -20,49 +26,67 @@ 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();
+    led1.off();
     if (p & 0x02) led1.on();
+    led2.off();
     if (p & 0x04) led2.on();
+    led3.off();
     if (p & 0x08) led3.on();
 }
 
-USART uart0(UartPort::_0, 9600);
+static void led_task_entry(void *parameter)
+{
+    (void)parameter;
+    uint32_t tick = 0;
+    uint8_t step = 0;
+    uint8_t led_map[4] = {1, 2, 4, 8};
+    uint32_t job_id = 0;
 
-int main(void)
+    led0.on();
+    led1.off();
+    led2.off();
+    led3.off();
+
+    while (1)
+    {
+        rt_thread_mdelay(250);
+        tick++;
+
+        step = (step + 1) & 3;
+        led_pattern(led_map[step]);
+
+        if (tick % 8 == 0)
+        {
+            printf("\r[%08lu] *** system alive @ %lu ticks   ",
+                   (unsigned long)(tick / 4),
+                   (unsigned long)rt_tick_get());
+        }
+
+        if (tick % 120 == 0)
+        {
+            job_id++;
+            printf("\r\n[MAIN] Dispatching job #%lu to worker...\r\n", (unsigned long)job_id);
+            work_task_send(job_id);
+        }
+    }
+}
+
+extern "C" 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);
+    uart_0.reinit(9600);
+    USART::setDefault(&uart_0);
 
-    cs = RCU_CFG0 & RCU_CFG0_SCS;
+    uint32_t cs = RCU_CFG0 & RCU_CFG0_SCS;
     printf("System clock switched to: ");
     if (cs == RCU_SCSS_PLLP)
         printf("PLL (168MHz)\r\n");
@@ -78,9 +102,12 @@ int main(void)
     led_pattern(0x0B);
     {
         RetCode ret = SdramManager::instance().init();
-        if (ret != RET_OK) {
+        if (ret != RET_OK)
+        {
             printf("  SDRAM init failed: %d\r\n", ret);
-        } else {
+        }
+        else
+        {
             printf("  SDRAM init OK\r\n");
         }
     }
@@ -89,9 +116,12 @@ int main(void)
     led_pattern(0x0D);
     {
         RetCode ret = FlashManager::instance().init();
-        if (ret != RET_OK) {
+        if (ret != RET_OK)
+        {
             printf("  Flash init failed: %d\r\n", ret);
-        } else {
+        }
+        else
+        {
             printf("  Flash init OK (%lu KB total, %lu KB/sector)\r\n",
                    FlashManager::instance().total_size() / 1024,
                    FlashManager::instance().sector_size() / 1024);
@@ -101,9 +131,12 @@ int main(void)
     printf("Initializing LCD...\r\n");
     {
         RetCode ret = Lcd::instance().init();
-        if (ret != RET_OK) {
+        if (ret != RET_OK)
+        {
             printf("  LCD init failed: %d\r\n", ret);
-        } else {
+        }
+        else
+        {
             printf("  LCD init OK (%s)\r\n", Lcd::instance().idString());
         }
     }
@@ -111,9 +144,12 @@ int main(void)
     printf("Initializing Touch...\r\n");
     {
         RetCode ret = GT1151::instance().init();
-        if (ret != RET_OK) {
+        if (ret != RET_OK)
+        {
             printf("  Touch init failed: %d\r\n", ret);
-        } else {
+        }
+        else
+        {
             printf("  Touch init OK\r\n");
         }
     }
@@ -123,23 +159,28 @@ int main(void)
     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)
+    printf("Initializing RT-Thread...\r\n");
+    rt_hw_board_init();
+    rt_system_timer_init();
+    rt_system_scheduler_init();
+
+    monitor_task_init();
+    work_task_init();
+
+    rt_thread_t led_thread = rt_thread_create("led",
+                                               led_task_entry,
+                                               RT_NULL,
+                                               512,
+                                               RT_THREAD_PRIORITY_MAX - 4,
+                                               10);
+    if (led_thread != RT_NULL)
     {
-        led0.toggle();
-        delay_1ms(500);
-
-        tick++;
-        if (tick % 10 == 0) {
-            printf(".");
-        }
-        if (tick % 120 == 0) {
-            printf(" [%lu s]\r\n", tick / 2);
-        }
+        rt_thread_startup(led_thread);
     }
+
+    printf("Starting RT-Thread scheduler...\r\n");
+    rt_system_scheduler_start();
+
+    return 0;
 }