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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),' `( C5 T0 f5 R3 s- z' M, t+ j
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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。2 Y P/ t+ s: F2 M: m
+ l& {+ E* r) s8 u 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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4 R9 _2 b) C9 X UsbPhyOn 代码如下,外部时钟配为19.2M. device mode:5 g; ?8 l; b, I2 M
8 D$ ]& h: K6 n W* d 请问个和我们的设备电流是否有关:4 O2 G, P! Q8 g0 A0 r! n
0 a1 H( s K' I- W; S+ N. W5 pvoid UsbPhyOn(unsigned int ulIndex)$ I6 W( w' o) j9 C6 y
{
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unsigned int reg = 0;" X7 [& b( r+ H, B" ^
BSP_KickUnlock();
8 J. I1 G; i# Q: v/ w! M reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);0 \" v9 C1 f0 s
reg &= ~(CFGCHIP2_REFFREQ);
: d6 H- Y6 N% F; s. l3 b reg |= CFGCHIP2_REFFREQ_19_2MHZ;
+ r' Y; P5 t, k- ]; U5 U //reg |=CFGCHIP2_REFFREQ_24MHZ;
- U( r/ ?. r4 J. p; P HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr)=reg;- }* P* E: u+ E
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reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);
. U6 m9 `6 x/ x4 X; u tprintf("\r\n clk==0x%08x:\r\n", reg &= (CFGCHIP2_REFFREQ));
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#if debug$ ?: ]; ^; t9 y
/***internal 2.0***/ //aux_clk
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reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);
2 `) J# V, n) L2 f- V/ a0 [ reg &= ~(CFGCHIP2_USB2PHYCLKMUX);
5 } ]: n3 ]+ g$ z6 ]4 C reg |= (CFGCHIP2_USB2PHYCLKMUX);
" w8 `& W) t: {! @! I5 ^+ T* M G0 x HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr) = reg;
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% B2 _( i3 J, g( K( i" w, b: G reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);$ ]; N, J# t& V( R l v7 c# @& ~' M
tprintf("\r\n 2.0clk source=0x%08x:\r\n", reg &= (CFGCHIP2_USB2PHYCLKMUX));0 z5 c4 C1 K! `: c, N3 x; R6 V( s
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/***internal 1.0***/ ///phy out
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reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);
! f4 x) e& w& v. [9 S6 P* t reg &= ~(CFGCHIP2_USB1PHYCLKMUX);
4 W6 {6 O1 P& K3 J% o //reg |= (CFGCHIP2_USB1PHYCLKMUX);
c, w. i; i2 `) s; I HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr) = reg;. k" D1 O+ G, v% D( Z' f
5 N% J. W+ h* {" A reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);
: `) W: @- m. P( B& ^2 u tprintf("\r\n 1.0clk source=0x%08x:\r\n", reg &= (CFGCHIP2_USB1PHYCLKMUX));3 x/ E, |& x$ o6 H: \
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# i" W4 B, B1 d( E* n. u/***phy run***/ //phy out
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reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);
) F5 B$ c k4 r$ u% _) u1 G0 P //tprintf("\r\n CFGCHIP2_PHYPWRDN=0x%08x:\r\n", reg &= (CFGCHIP2_PHYPWRDN));
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/ W! }0 x9 T; \ Q, M reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);
+ u( h ?" U x; w) n" s reg &= ~(CFGCHIP2_VBDTCTEN);0 s y: m; n8 z2 o- N
reg |= (CFGCHIP2_VBDTCTEN);
% F4 [# }' Z/ W+ v$ f( v tprintf("\r\n phy CFGCHIP2_VBDTCTEN=0x%08x:\r\n", reg &= (CFGCHIP2_VBDTCTEN));
5 ^9 x( t0 o& d2 t1 j& h7 }#endif
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reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr); ; v7 [8 M$ P# B
reg &= ~(CFGCHIP2_RESET | CFGCHIP2_PHYPWRDN | CFGCHIP2_OTGPWRDN);
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4 t" n( l/ d& D, H reg |= CFGCHIP2_PHY_PLLON;
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4 ]$ B4 s0 z# }- A9 h+ ~. o# ^ HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr) = reg;
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while (!(HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr) & CFGCHIP2_PHYCLKGD));
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& a* w& m1 X& L; {& [//#ifdef USB_MODE_FULLSPEED
3 g7 F: b" T. l, M& G6 ] HWREGB(USB0_BASE + USB_O_POWER) &= 0xdf;) i8 C' x* V+ o( @4 a" N! M
//#endif /* USB_MODE_HS_DISABLE */) `( D* v, A) v3 L
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tprintf("\r\n USB0_BASE + USB_O_POWER=0x%08x:\r\n", HWREG(USB0_BASE + USB_O_POWER));
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9 p; H8 O5 r" I7 u2 C) o 附件有我们的电路图:3 ^5 k- G! {) d1 @" f: Y t
请问能否帮助分析,谢谢.- U. z9 G2 I* A; G x8 m
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