请问stm32 USB FS Device Lib中Custom_HID与Mass_Storage范例的ENDP0_RXADDR

只看该作者 · 2013-1-23 12:39

本帖最后由 hmjack2008 于 2013-1-23 12:44 编辑

请问一件事:
stm32 USB FS Device Lib (v3.4.0)中的范例:
Custom_HID与Mass_Storage范例中的 #define ENDP0_RXADDR (0x18) 是否与ENDP1_RXADDR或ENDP2_RXADDR 地址重迭了吗 ??
因为按照PMAAddr 起始地址0x40006000计算如下:

EndPoint	Direction	Register	Length	PMA_Addr_Begin	PMA_Addr_End
40006000			Hex	Hex	Hex
EP0	Tx0	AddrTx0	4	40006000	40006003
		CountTx0	4	40006004	40006007
	Rx0	AddrRx0	4	40006008	4000600B
		CountRx0	4	4000600C	4000600F
EP1	Tx1	AddrTx1	4	40006010	40006013
		CountTx1	4	40006014	40006017
	Rx1	AddrRx1	4	40006018	4000601B
		CountRx1	4	4000601C	4000601F
EP2	Tx2	AddrTx2	4	40006020	40006023
		CountTx2	4	40006024	40006027
	Rx2	AddrRx2	4	40006028	4000602B
		CountRx2	4	4000602C	4000602F

但是实际运行Mass_Storage,数据读写又正常, 想不懂为何 #define ENDP0_RXADDR 设定为 (0x18) ??

Custom_HID范例 : usb_conf.h文件中定义
/* defines how many endpoints are used by the device */
#define EP_NUM       (2)
/* buffer table base address */
#define BTABLE_ADDRESS       (0x00)
/* EP0  */
/* rx/tx buffer base address */
#define ENDP0_RXADDR             (0x18)
#define ENDP0_TXADDR             (0x58)
/* EP1  */
/* tx buffer base address */
#define ENDP1_TXADDR             (0x100)
#define ENDP1_RXADDR       (0x104)

Mass_Storage范例 : usb_conf.h文件中定义
/* defines how many endpoints are used by the device */
#define EP_NUM       (3)
/* buffer table base address */
#define BTABLE_ADDRESS       (0x00)
/* EP0  */
/* rx/tx buffer base address */
#define ENDP0_RXADDR             (0x18)
#define ENDP0_TXADDR             (0x58)
/* EP1  */
/* tx buffer base address */
#define ENDP1_TXADDR             (0x98)
/* EP2  */
/* Rx buffer base address */
#define ENDP2_RXADDR       (0xD8)