STM32 USB HOST 驱动 ch340

天臆弄人 · 2019-07-04T03:34:55+00:00

初始化部分，加上CDC 回调，8 q5 o$ J" z7 f& k- o 主要在枚举不通过，CH340是0XFF的类，标准的是CDC 类为0x02,然后就是修改 5 R4 F) W: \! k5 g, v#define CH340X_CLASS 0xff + a Q, y& O% e/ x if((pphost->device_prop.Itf_Desc[0].bInterfaceClass == CH340X_CLASS)&& \5 E* f" `' I, l' S2 P; Q6 L (pphost->device_prop.Itf_Desc[0].bInterfaceSubClass == 0x01) && \8 R: R' g* K1 ^6 |5 j (pphost->device_prop.Itf_Desc[0].bInterfaceProtocol == 0x02)){ . @5 f, g s1 h( B; k & g) n2 m( W' I: X% [ ret = 0x02;0 b( n) A# ]& B /*Collect the notification endpoint address and length*/! T4 s F! ?8 M CDC_Machine.CDC_CommItf.ep_addr = pphost->device_prop.Ep_Desc[0][2].bEndpointAddress; : {) L* @8 \% H CDC_Machine.CDC_CommItf.length = pphost->device_prop.Ep_Desc[0][2].wMaxPacketSize;- X! A" [6 k, S" R+ J# ^# ^ + [: O7 {4 Y0 ]7 j if(pphost->device_prop.Ep_Desc[0][2].bEndpointAddress & 0x80)% h3 S4 }% y$ [( ~ {+ Y# ^3 D j7 U" M CDC_Machine.CDC_CommItf.notificationEp =\% N1 U5 S+ H3 q! [5 \' p* G# G; a+ i8 u (pphost->device_prop.Ep_Desc[0][2].bEndpointAddress); ' C( B' G4 u9 j/ G8 p3 d } 2 L! P' `; J/ u6 s$ x 5 `' d7 E, p- f7 b$ M* W% P+ P7 M

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天臆弄人发布时间：2019-7-4 11:34

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初始化部分，加上CDC 回调，
主要在枚举不通过，CH340是0XFF的类，标准的是CDC 类为0x02,然后就是修改
#define  CH340X_CLASS 0xff
if((pphost->device_prop.Itf_Desc[0].bInterfaceClass  == CH340X_CLASS)&& \
(pphost->device_prop.Itf_Desc[0].bInterfaceSubClass  == 0x01) && \
   (pphost->device_prop.Itf_Desc[0].bInterfaceProtocol == 0x02)){

ret = 0x02;
      /*Collect the notification endpoint address and length*/
CDC_Machine.CDC_CommItf.ep_addr = pphost->device_prop.Ep_Desc[0][2].bEndpointAddress;
CDC_Machine.CDC_CommItf.length  = pphost->device_prop.Ep_Desc[0][2].wMaxPacketSize;

if(pphost->device_prop.Ep_Desc[0][2].bEndpointAddress & 0x80)
{
   CDC_Machine.CDC_CommItf.notificationEp =\
      (pphost->device_prop.Ep_Desc[0][2].bEndpointAddress);
}