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你好:
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我们公司在OMAPL138_StarterWare_1_10_04_01的基础上( OMAPL138_StarterWare_1_10_04_01\examples\evmOMAPL138\usb_dev_msc),* g' G. ]+ ?. y/ y0 H8 `# _- G
5 L& R" J) }$ O7 x 实现了usb mass storage功能,在win7系统下面u盘功能够顺利实际,但是在电脑上接一个hub后,然后将u盘接到hub上,u盘不能正解识别。* L4 ]8 Z5 T. v, w% v0 r
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目前分析代码发现经hub转接后,电脑发(SCSI_READ_10 0x28)这个命令,usb 复位。
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' Y+ { O# D5 M% ~/ \ UsbPhyOn 代码如下,外部时钟配为19.2M. device mode:" i" D2 s @9 g1 o3 \' m0 {' M
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请问个和我们的设备电流是否有关:
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void UsbPhyOn(unsigned int ulIndex)
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unsigned int reg = 0;
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reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);
/ J9 J3 k. c4 g reg &= ~(CFGCHIP2_REFFREQ);. f7 o* X3 z' h5 W7 j; f7 A0 {( V
reg |= CFGCHIP2_REFFREQ_19_2MHZ;0 D7 N9 Q8 @$ k
//reg |=CFGCHIP2_REFFREQ_24MHZ;9 t8 J, v' V# n; \9 w k
HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr)=reg;$ P4 L, X) g+ L# J- o
- p- n) F) @1 |) b; z# c reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);
8 Z( N$ ~' D/ V% v; b/ n5 R) i b6 \ tprintf("\r\n clk==0x%08x:\r\n", reg &= (CFGCHIP2_REFFREQ));/ { H& M1 L) ?* M/ H* p7 Y
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#if debug
z2 U: Q' {) G# s$ G" m/ z* }/***internal 2.0***/ //aux_clk4 `- ?; B0 |* s$ j2 I4 V$ c
; |7 |2 t& W- D5 [8 t reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);+ K3 _) y0 H4 T. q" C9 o
reg &= ~(CFGCHIP2_USB2PHYCLKMUX);7 _/ q4 `! Q. T! u
reg |= (CFGCHIP2_USB2PHYCLKMUX);
9 a, n0 H7 j9 ^, e HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr) = reg;8 @" A* @4 F$ J+ o2 r. z
2 [. l1 x, M- Q% q* `9 v, ^0 Y reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);$ E' i4 Z! ~1 E$ [5 x7 S- g
tprintf("\r\n 2.0clk source=0x%08x:\r\n", reg &= (CFGCHIP2_USB2PHYCLKMUX));$ Q( h. u9 ?& T- Y( y9 D9 F
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/***internal 1.0***/ ///phy out
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reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);
: z; v5 D3 J; p t: R reg &= ~(CFGCHIP2_USB1PHYCLKMUX);+ E: q$ B. V8 s& F8 o, N: ~( G
//reg |= (CFGCHIP2_USB1PHYCLKMUX);
7 ]6 Q; E8 _4 D/ { HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr) = reg;7 t" N* O) O z: S; U0 W3 e; x3 m u
9 @& x0 C# f% p) |2 A reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);& J# J6 R( t) I) E4 e
tprintf("\r\n 1.0clk source=0x%08x:\r\n", reg &= (CFGCHIP2_USB1PHYCLKMUX));
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1 A. [6 l, T3 g/ B) `/***phy run***/ //phy out
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; f& D' l# f# \2 { d //tprintf("\r\n CFGCHIP2_PHYPWRDN=0x%08x:\r\n", reg &= (CFGCHIP2_PHYPWRDN));
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reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);" k% v) \, c. W! F9 @
reg &= ~(CFGCHIP2_VBDTCTEN);- i k0 N( q5 [' [! C! f
reg |= (CFGCHIP2_VBDTCTEN);
$ k+ \+ r+ E0 v( u tprintf("\r\n phy CFGCHIP2_VBDTCTEN=0x%08x:\r\n", reg &= (CFGCHIP2_VBDTCTEN));
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- H+ G3 h- H9 k8 c) P$ N) u reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);
9 U% a0 R, @0 H+ }& v2 [ reg &= ~(CFGCHIP2_RESET | CFGCHIP2_PHYPWRDN | CFGCHIP2_OTGPWRDN); 8 T, B6 A* i$ M8 ~' P( X
3 \& U, s( b) y2 G/ u reg |= CFGCHIP2_PHY_PLLON;
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: a( h* e: F- w) o% O- p- h HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr) = reg; ~: B7 P) h4 U: |! p9 d
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while (!(HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr) & CFGCHIP2_PHYCLKGD)); $ f! }. u2 n/ E7 ?, c3 f
$ U5 V# x9 H4 C" c: |* X# v//#ifdef USB_MODE_FULLSPEED! z# o! ~9 f$ J1 r3 ?( V2 G# a
HWREGB(USB0_BASE + USB_O_POWER) &= 0xdf;: C6 c5 p* X S0 y9 \' V
//#endif /* USB_MODE_HS_DISABLE */ f6 E) F5 c5 r% _# X' ]
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tprintf("\r\n USB0_BASE + USB_O_POWER=0x%08x:\r\n", HWREG(USB0_BASE + USB_O_POWER));" O- t% F5 K2 h. W* r
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4 g: l0 y) f3 e, s 附件有我们的电路图:# g/ n# D5 A) k
请问能否帮助分析,谢谢.5 c1 B# ]5 l8 o
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