usb通信成功

lib/rt-thread/tusb_rt_thread_port.c

@@ -28,6 +28,7 @@
 #include "bsp_init.h"
 #include "stm32f4xx.h"
 #include "dcd.h"
+#include <ctype.h>
 
 #define  DBG_TAG  "TinyUSB"
 #define  DBG_LVL  DBG_INFO
@@ -40,6 +41,10 @@ static rt_uint8_t tusb_stack[PKG_TINYUSB_STACK_SIZE];
 static struct rt_thread tusb_thread;
 #endif /* RT_USING_HEAP */
 
+
+struct rt_semaphore g_dcd_sem;
+
+
 int tusb_board_init(void) {
   GPIO_InitTypeDef GPIO_InitStructure;
 
@@ -83,12 +88,21 @@ static void tusb_thread_entry(void *parameter)
 #endif
     }
 }
+static void cdc_task(void *parameter);
 
 static int init_tinyusb(void)
 {
     rt_thread_t tid;
-
+    RCC_ClocksTypeDef rcc = {0};
+    RCC_GetClocksFreq(&rcc);
+    rt_kprintf("TinyUSB init... \r\n");
+    rt_kprintf("rcc.SYSCLK_Frequency=%d Hz\r\n", rcc.SYSCLK_Frequency);
+    rt_kprintf("rcc.HCLK_Frequency=%d Hz\r\n", rcc.HCLK_Frequency);
+    rt_kprintf("rcc.PCLK1_Frequency=%d Hz\r\n", rcc.PCLK1_Frequency);
+    rt_kprintf("rcc.PCLK2_Frequency=%d Hz\r\n", rcc.PCLK2_Frequency);
+    rt_kprintf("rcc.USBCLK_Frequency=%d Hz\r\n", rcc.USBCLK_Frequency);
     tusb_board_init();
+    rt_sem_init(&g_dcd_sem, "tusb_cdc", 0, RT_IPC_FLAG_PRIO);
 
     //call tusb_rhport_init()
     tusb_init();
@@ -99,7 +113,7 @@ static int init_tinyusb(void)
   #ifdef RT_USING_HEAP
     tid = rt_thread_create("tusb", tusb_thread_entry, RT_NULL,
                            2048,
-                           5, 10);
+                           1, 10);
     if (tid == RT_NULL)
   #else
     rt_err_t result;
@@ -116,8 +130,72 @@ static int init_tinyusb(void)
 
     rt_thread_startup(tid);
 
+    tid = rt_thread_create("tusb_cdc", cdc_task, RT_NULL,
+                        2048,
+                        6, 10);
+    rt_thread_startup(tid);
+
     return 0;
 }
 // INIT_APP_EXPORT(init_tinyusb);
 extern_init(tinyusb, init_tinyusb);
+
+
+
+static void echo_serial_port(uint8_t itf, uint8_t buf[], uint32_t count) {
+  uint8_t const case_diff = 'a' - 'A';
+
+  for (uint32_t i = 0; i < count; i++) {
+    if (itf == 0) {
+      // echo back 1st port as lower case
+      if (isupper(buf[i])) buf[i] += case_diff;
+    } else {
+      // echo back 2nd port as upper case
+      if (islower(buf[i])) buf[i] -= case_diff;
+    }
+
+    tud_cdc_n_write_char(itf, buf[i]);
+  }
+  tud_cdc_n_write_flush(itf);
+}
+
+
+
+
+// notify cdc task recv data
+void tud_cdc_rx_cb(uint8_t itf){
+  TU_LOG(2, "tud_cdc_rx_cb\r\n");
+  rt_sem_release(&g_dcd_sem);
+}
+
+
+static void cdc_task(void *parameter) {
+  TU_LOG(2, "CDC task started\r\n");
+  while(1){
+    rt_sem_take(&g_dcd_sem, RT_WAITING_FOREVER);
+  TU_LOG(2, "tud_cdc_rx_take\r\n");
+    for (uint8_t itf = 0; itf < CFG_TUD_CDC; itf++) {
+      // connected() check for DTR bit
+      // Most but not all terminal client set this when making connection
+      // if ( tud_cdc_n_connected(itf) )
+      {
+        if (tud_cdc_n_available(itf)) {
+          uint8_t buf[64];
+          uint32_t count = tud_cdc_n_read(itf, buf, sizeof(buf));
+
+          // echo back to both serial ports
+          echo_serial_port(0, buf, count);
+          echo_serial_port(1, buf, count);
+        }
+
+      }
+    }
+  }
+}
+
+
+
+
+
+
 #endif /*__RTTHREAD__*/