1，不要在程序中直接出现id地址，例如STM32:1FFFF7E8 1FFFF7EC 1FFFF7F0 STM8: 0x4865~0x4870 2, 利用校验和或是crc对程序区进行校验，防止改程序 QQ9272078
楼主的这种编译方式与通常大家用的不太一下样，单纯的KEIL 编译方式相对了解的人多一些。所以需要有这类经验的人在这里分享一下。 另外楼主先尝试一下最简单的工程试一下，也许会有所发现
/* USB CDC device Configuration Descriptor */ __ALIGN_BEGIN uint8_t USBD_CDC_CfgFSDesc __ALIGN_END = { /*Configuration Descriptor*/ 0x09, /* bLength: Configuration Descriptor size */ USB_DESC_TYPE_CONFIGURATION, /* bDescriptorType: Configuration */ USB_CDC_CONFIG_DESC_SIZ, /* wTotalLength:no of returned bytes */ 0x00, 0x04, /* bNumInterfaces: 2 interface */ //old 2 2¸öVCP ʹÓÃ4¸ö½Ó¿Ú 0x01, /* bConfigurationValue: Configuration value */ 0x00, /* iConfiguration: Index of string descriptor describing the configuration */ 0xC0, /* bmAttributes: self powered */ 0x32, /* MaxPower 0 mA */ /*---------------------------------------------------------------------------*/ // IAD 0x08, // bLength: Interface Descriptor size 0x0B, // bDescriptorType: IAD 0x00, // bFirstInterface 0x02, // bInterfaceCount 0x02, // bFunctionClass: CDC 0x02, // bFunctionSubClass 0x01, // bFunctionProtocol 0x02, // iFunction /*Interface Descriptor */ 0x09, /* bLength: Interface Descriptor size */ USB_DESC_TYPE_INTERFACE, /* bDescriptorType: Interface */ /* Interface descriptor type */ 0x00, /* bInterfaceNumber: Number of Interface */ 0x00, /* bAlternateSetting: Alternate setting */ 0x01, /* bNumEndpoints: One endpoints used */ 0x02, /* bInterfaceClass: Communication Interface Class */ 0x02, /* bInterfaceSubClass: Abstract Control Model */ 0x01, /* bInterfaceProtocol: Common AT commands */ 0x00, /* iInterface: */ /*Header Functional Descriptor*/ 0x05, /* bLength: Endpoint Descriptor size */ 0x24, /* bDescriptorType: CS_INTERFACE */ 0x00, /* bDescriptorSubtype: Header Func Desc */ 0x10, /* bcdCDC: spec release number */ 0x01, /*Call Management Functional Descriptor*/ 0x05, /* bFunctionLength */ 0x24, /* bDescriptorType: CS_INTERFACE */ 0x01, /* bDescriptorSubtype: Call Management Func Desc */ 0x00, /* bmCapabilities: D0+D1 */ 0x01, /* bDataInterface: 1 */ /*ACM Functional Descriptor*/ 0x04, /* bFunctionLength */ 0x24, /* bDescriptorType: CS_INTERFACE */ 0x02, /* bDescriptorSubtype: Abstract Control Management desc */ 0x02, /* bmCapabilities */ /*Union Functional Descriptor*/ 0x05, /* bFunctionLength */ 0x24, /* bDescriptorType: CS_INTERFACE */ 0x06, /* bDescriptorSubtype: Union func desc */ 0x00, /* bMasterInterface: Communication class interface */ 0x01, /* bSlaveInterface0: Data Class Interface */ /*Endpoint 2 Descriptor*/ 0x07, /* bLength: Endpoint Descriptor size */ USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */ CDC_CMD_EP, /* bEndpointAddress */ 0x03, /* bmAttributes: Interrupt */ LOBYTE(CDC_CMD_PACKET_SIZE), /* wMaxPacketSize: */ HIBYTE(CDC_CMD_PACKET_SIZE), CDC_FS_BINTERVAL, /* bInterval: */ /*---------------------------------------------------------------------------*/ /*Data class interface descriptor*/ 0x09, /* bLength: Endpoint Descriptor size */ USB_DESC_TYPE_INTERFACE, /* bDescriptorType: */ 0x01, /* bInterfaceNumber: Number of Interface */ 0x00, /* bAlternateSetting: Alternate setting */ 0x02, /* bNumEndpoints: Two endpoints used */ 0x0A, /* bInterfaceClass: CDC */ 0x00, /* bInterfaceSubClass: */ 0x00, /* bInterfaceProtocol: */ 0x00, /* iInterface: */ /*Endpoint OUT Descriptor*/ 0x07, /* bLength: Endpoint Descriptor size */ USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */ CDC_OUT_EP, /* bEndpointAddress */ 0x02, /* bmAttributes: Bulk */ LOBYTE(CDC_DATA_FS_MAX_PACKET_SIZE), /* wMaxPacketSize: */ HIBYTE(CDC_DATA_FS_MAX_PACKET_SIZE), 0x00, /* bInterval: ignore for Bulk transfer */ /*Endpoint IN Descriptor*/ 0x07, /* bLength: Endpoint Descriptor size */ USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */ CDC_IN_EP, /* bEndpointAddress */ 0x02, /* bmAttributes: Bulk */ LOBYTE(CDC_DATA_FS_MAX_PACKET_SIZE), /* wMaxPacketSize: */ HIBYTE(CDC_DATA_FS_MAX_PACKET_SIZE), 0x00, /* bInterval: ignore for Bulk transfer */ //================================================================================================== //ÐÂÔö //================================================================================================== // IAD 0x08, // bLength: Interface Descriptor size 0x0B, // bDescriptorType: IAD 0x02, // bFirstInterface 0x02, // bInterfaceCount 0x02, // bFunctionClass: CDC 0x02, // bFunctionSubClass 0x01, // bFunctionProtocol 0x02, // iFunction /*Interface Descriptor */ 0x09, /* bLength: Interface Descriptor size */ USB_DESC_TYPE_INTERFACE, /* bDescriptorType: Interface */ /* Interface descriptor type */ 0x02, /* bInterfaceNumber: Number of Interface */ 0x00, /* bAlternateSetting: Alternate setting */ 0x01, /* bNumEndpoints: One endpoints used */ 0x02, /* bInterfaceClass: Communication Interface Class */ 0x02, /* bInterfaceSubClass: Abstract Control Model */ 0x01, /* bInterfaceProtocol: Common AT commands */ 0x00, /* iInterface: */ /*Header Functional Descriptor*/ 0x05, /* bLength: Endpoint Descriptor size */ 0x24, /* bDescriptorType: CS_INTERFACE */ 0x00, /* bDescriptorSubtype: Header Func Desc */ 0x10, /* bcdCDC: spec release number */ 0x01, /*Call Management Functional Descriptor*/ 0x05, /* bFunctionLength */ 0x24, /* bDescriptorType: CS_INTERFACE */ 0x01, /* bDescriptorSubtype: Call Management Func Desc */ 0x00, /* bmCapabilities: D0+D1 */ 0x01, /* bDataInterface: 1 */ /*ACM Functional Descriptor*/ 0x04, /* bFunctionLength */ 0x24, /* bDescriptorType: CS_INTERFACE */ 0x02, /* bDescriptorSubtype: Abstract Control Management desc */ 0x02, /* bmCapabilities */ /*Union Functional Descriptor*/ 0x05, /* bFunctionLength */ 0x24, /* bDescriptorType: CS_INTERFACE */ 0x06, /* bDescriptorSubtype: Union func desc */ 0x00, /* bMasterInterface: Communication class interface */ 0x01, /* bSlaveInterface0: Data Class Interface */ /*Endpoint 2 Descriptor*/ 0x07, /* bLength: Endpoint Descriptor size */ USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */ CDC_CMD_EP4, /* bEndpointAddress */ 0x03, /* bmAttributes: Interrupt */ LOBYTE(CDC_CMD_PACKET_SIZE), /* wMaxPacketSize: */ HIBYTE(CDC_CMD_PACKET_SIZE), CDC_FS_BINTERVAL, /* bInterval: */ /*---------------------------------------------------------------------------*/ /*Data class interface descriptor*/ 0x09, /* bLength: Endpoint Descriptor size */ USB_DESC_TYPE_INTERFACE, /* bDescriptorType: */ 0x03, /* bInterfaceNumber: Number of Interface */ 0x00, /* bAlternateSetting: Alternate setting */ 0x02, /* bNumEndpoints: Two endpoints used */ 0x0A, /* bInterfaceClass: CDC */ 0x00, /* bInterfaceSubClass: */ 0x00, /* bInterfaceProtocol: */ 0x00, /* iInterface: */ /*Endpoint OUT Descriptor*/ 0x07, /* bLength: Endpoint Descriptor size */ USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */ CDC_OUT_EP3, /* bEndpointAddress */ 0x02, /* bmAttributes: Bulk */ LOBYTE(CDC_DATA_FS_MAX_PACKET_SIZE), /* wMaxPacketSize: */ HIBYTE(CDC_DATA_FS_MAX_PACKET_SIZE), 0x00, /* bInterval: ignore for Bulk transfer */ /*Endpoint IN Descriptor*/ 0x07, /* bLength: Endpoint Descriptor size */ USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */ CDC_IN_EP3, /* bEndpointAddress */ 0x02, /* bmAttributes: Bulk */ LOBYTE(CDC_DATA_FS_MAX_PACKET_SIZE), /* wMaxPacketSize: */ HIBYTE(CDC_DATA_FS_MAX_PACKET_SIZE), 0x00 /* bInterval: ignore for Bulk transfer */ } ;
如果使用STM32，并且使用HAL库，其实不用太在乎M3还是M0.只是指令集M3更丰富些，外设基本都是一样的，使用HAL库的方法也是一样的。如果真的涉及到了指令集或者内核部分，可以参考《ARM Cortex-M0权威指南》，电子版取搜索下载即可，里面详细描述了M0内核的指令集以及内核实现等。
你好，我也遇到了这问题，我用的是某宝上买的最小系统版，长条形，C8T6，然后用SWD供电，程序可以正常运行，用USB口供电，就不能运行程序了。请问怎么解决呢？
6楼、8楼正解。 如果理解了stm32的中断机制，就发觉其实很简单。举个例子，完善一下。 void EXTI9_5_IRQHandler(void) // 假如我们使用 C6上升沿触发、PA9下降沿触发 { if((GPIOC->IDR & (1
我想了一下，怀疑是不是因为按键松开的时机不太对，好像按键检测程序里不同时间点松开按键返回值不一样，大佬看看会是因为这个吗，毕竟我软件仿真时候松开或者按下按键都是可以看着程序运行到哪了进行设置的
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