设置usb时钟

Project/Src/MY/stm32f4xx_it.c

@@ -195,7 +195,6 @@ void OTG_HS_EP1_OUT_IRQHandler(void)
 #endif
 
 
-#if PKG_TINYUSB_DEVICE_ENABLE
 void OTG_FS_IRQHandler(void) {
   tusb_int_handler(0, true);
 }
@@ -204,7 +203,6 @@ void OTG_HS_IRQHandler(void) {
   tusb_int_handler(1, true);
 }
 
-#endif
 
 #else
 

Project/Src/STM32/CMSIS/Device/ST/STM32F4xx/Source/Templates/system_stm32f4xx.c

@@ -348,9 +348,9 @@
      through STLINK MCO pin of STM32F103 microcontroller. The frequency cannot be changed
      and is fixed at 8 MHz.
      Hardware configuration needed for Nucleo Board:
-     <EFBFBD> SB54, SB55 OFF
+     ? SB54, SB55 OFF
-     <EFBFBD> R35 removed
+     ? R35 removed
-     <EFBFBD> SB16, SB50 ON */
+     ? SB16, SB50 ON */
 /* #define USE_HSE_BYPASS */
 
 #if defined(USE_HSE_BYPASS)
@@ -392,7 +392,11 @@
 #endif /* STM32F446xx */
 
 #if defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F446xx) || defined(STM32F469_479xx)
+#ifdef __USB_USB__
+#define PLL_N      336
+#else /* !__USB_USB__ */
 #define PLL_N      360
+#endif
 /* SYSCLK = PLL_VCO / PLL_P */
 #define PLL_P      2
 #endif /* STM32F427_437x || STM32F429_439xx || STM32F446xx || STM32F469_479xx */
@@ -438,7 +442,11 @@
 #endif /* STM32F40_41xxx */
 
 #if defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F446xx) || defined(STM32F469_479xx)
+#ifdef __USB_USB__
+  uint32_t SystemCoreClock = 168000000;
+#else /* !__USB_USB__ */
   uint32_t SystemCoreClock = 180000000;
+#endif
 #endif /* STM32F427_437x || STM32F429_439xx || STM32F446xx || STM32F469_479xx */
 
 #if defined(STM32F401xx)

Project/Src/STM32/STM32F4xx_StdPeriph_Driver/inc/stm32f4xx_rcc.h

@@ -51,6 +51,7 @@ typedef struct
   uint32_t HCLK_Frequency;   /*!<  HCLK clock frequency expressed in Hz   */
   uint32_t PCLK1_Frequency;  /*!<  PCLK1 clock frequency expressed in Hz  */
   uint32_t PCLK2_Frequency;  /*!<  PCLK2 clock frequency expressed in Hz  */
+  uint32_t USBCLK_Frequency;
 }RCC_ClocksTypeDef;
 
 /* Exported constants --------------------------------------------------------*/

Project/Src/STM32/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_rcc.c

@@ -1316,7 +1316,8 @@ void RCC_PCLK2Config(uint32_t RCC_HCLK)
   */
 void RCC_GetClocksFreq(RCC_ClocksTypeDef* RCC_Clocks)
 {
-  uint32_t tmp = 0, presc = 0, pllvco = 0, pllp = 2, pllsource = 0, pllm = 2;
+  uint32_t tmp = 0, presc = 0, pllvco = 0, pllp = 2, pllq = 7, pllsource = 0,
+           pllm = 2;
 #if defined(STM32F412xG) || defined(STM32F413_423xx) || defined(STM32F446xx)
   uint32_t pllr = 2;
 #endif /* STM32F412xG || STM32F413_423xx || STM32F446xx */
@@ -1352,7 +1353,9 @@ void RCC_GetClocksFreq(RCC_ClocksTypeDef* RCC_Clocks)
     }
 
     pllp = (((RCC->PLLCFGR & RCC_PLLCFGR_PLLP) >>16) + 1 ) *2;
+    pllq = ((RCC->PLLCFGR & RCC_PLLCFGR_PLLQ) >>24);
     RCC_Clocks->SYSCLK_Frequency = pllvco/pllp;
+    RCC_Clocks->USBCLK_Frequency = pllvco/pllq;
     break;
 
 #if defined(STM32F412xG) || defined(STM32F413_423xx) || defined(STM32F446xx)

Project/Src/rt-thread/board.c

@@ -102,8 +102,10 @@ const libc_device_file *g_usart;
 
 // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD>ӣ<EFBFBD>25m<35><6D><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA>֤usbΪ48m<38><6D><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƶ<EFBFBD><C6B5><EFBFBD><EFBFBD>ֻ<EFBFBD><D6BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ168m
 void reconfig_clock(void) {
-  RCC_PLLConfig(RCC_PLLSource_HSE, 25, 336, 2, 7);
+  RCC_ClocksTypeDef rcc = {0};
-  SystemCoreClock = 168000000;
+  // RCC_PLLConfig(RCC_PLLSource_HSE, 25, 336, 2, 7);
+  RCC_GetClocksFreq(&rcc);
+  SystemCoreClock = rcc.SYSCLK_Frequency;
 }
 
 /**

Project/make.py

@@ -41,8 +41,9 @@ DEF=[
   '-D__packed=__attribute__((__packed__))',
   '-D__weak=__attribute__((weak))',
   '-D__RTTHREAD__',
-  '-DSOC_SERIES_STM32F4',
+  # 使用usb时打开这个宏 系统时钟会被设置为168MHz USB时钟为48MHz
-  '-DPKG_TINYUSB_DEVICE_ENABLE',
+  # 如果不打开这个宏 系统时钟会被设置为180MHz USB会通信异常
+  '-D__USB_USB__',
 ]
 
 INC=[