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, n) h* M x* ]$ j8 \* ~2 Q* s) ` 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),% { x) B/ S( j% H5 I; ?
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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。
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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。, K7 y# w3 v2 N7 c: b% R) V4 C: C( w
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UsbPhyOn 代码如下,外部时钟配为19.2M. device mode:
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请问个和我们的设备电流是否有关:9 q6 m, D+ S! o$ i( y6 ~
3 j) _4 B u$ o( i T' \4 r1 K1 h, vvoid UsbPhyOn(unsigned int ulIndex)
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/ z5 m9 z% C/ l0 o0 V unsigned int reg = 0;
3 A# `3 b/ d, d7 d BSP_KickUnlock();/ R0 M* z& ^( a5 @2 {1 [9 T
reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);% x" A; [0 w. M6 z
reg &= ~(CFGCHIP2_REFFREQ);
3 ?5 @9 E. D- u reg |= CFGCHIP2_REFFREQ_19_2MHZ;
4 ^ Q# k- i2 }& n* ` //reg |=CFGCHIP2_REFFREQ_24MHZ;
. n& L& A5 s2 G8 A A) \ HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr)=reg;
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reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);) b6 j% v1 J3 Q- A& w% O4 y0 r
tprintf("\r\n clk==0x%08x:\r\n", reg &= (CFGCHIP2_REFFREQ));* v9 i, Q0 y$ `7 g. {! Z
. B7 ^* ^, G$ M+ p4 j#if debug
) L" ?7 q& E3 T7 ?. s& R# J( x/***internal 2.0***/ //aux_clk6 B B3 C+ p. b C
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reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);
/ }, i+ z5 h0 _, q: V2 X) y reg &= ~(CFGCHIP2_USB2PHYCLKMUX);+ A$ X6 d6 l, ]% B
reg |= (CFGCHIP2_USB2PHYCLKMUX);
0 L2 |; y6 p S8 |8 [ HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr) = reg;
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reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);1 r& F, C5 f6 N6 D& m. E$ @6 Z: T
tprintf("\r\n 2.0clk source=0x%08x:\r\n", reg &= (CFGCHIP2_USB2PHYCLKMUX));+ Y- E X0 {9 r7 D8 ~
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/***internal 1.0***/ ///phy out
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8 O& R! j; P& B1 g. z; i reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);
/ Y5 L5 X: C9 a1 J8 {5 }2 t9 s reg &= ~(CFGCHIP2_USB1PHYCLKMUX);. X% U8 V1 r$ P7 e
//reg |= (CFGCHIP2_USB1PHYCLKMUX);7 z+ N2 ]/ ]+ i R& z4 V
HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr) = reg;
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reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);1 _; N7 n5 Z1 j
tprintf("\r\n 1.0clk source=0x%08x:\r\n", reg &= (CFGCHIP2_USB1PHYCLKMUX));
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/***phy run***/ //phy out! P8 C! }2 L/ H5 ~" U: o( v
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reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr);1 a( O* v, H5 J8 N6 e0 A m$ _0 i
//tprintf("\r\n CFGCHIP2_PHYPWRDN=0x%08x:\r\n", reg &= (CFGCHIP2_PHYPWRDN));+ F6 \" C! _# U9 v! W
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reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr); |, D9 L' x0 `+ U! \
reg &= ~(CFGCHIP2_VBDTCTEN);
$ c; \$ P6 s, ~, ` reg |= (CFGCHIP2_VBDTCTEN);; Q' l: [9 y2 r4 l
tprintf("\r\n phy CFGCHIP2_VBDTCTEN=0x%08x:\r\n", reg &= (CFGCHIP2_VBDTCTEN));. b/ z7 C, `' j, i
#endif
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reg = HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr); k: {; |% X. e# w, v2 T; r. y8 D
reg &= ~(CFGCHIP2_RESET | CFGCHIP2_PHYPWRDN | CFGCHIP2_OTGPWRDN); * A. S- ]# @6 l3 e ^6 l
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reg |= CFGCHIP2_PHY_PLLON;2 A+ q( C8 \5 c
8 p6 {0 n7 |# l6 g HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr) = reg;
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while (!(HWREG(g_USBInstance[ulIndex].uiPHYConfigRegAddr) & CFGCHIP2_PHYCLKGD)); 8 m% w6 A" e0 N& l" T+ b% q' j# f
- _: S% @9 d7 s& M2 o o u//#ifdef USB_MODE_FULLSPEED
- r8 k" R9 Y( c8 E; g7 J) W HWREGB(USB0_BASE + USB_O_POWER) &= 0xdf;" O0 }$ e5 K6 Q0 K% C
//#endif /* USB_MODE_HS_DISABLE */# [) _2 z# x; b9 q
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tprintf("\r\n USB0_BASE + USB_O_POWER=0x%08x:\r\n", HWREG(USB0_BASE + USB_O_POWER));1 X6 Y* H( L/ |7 b% K
}
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; m2 p P: Q k 附件有我们的电路图:$ P. `" }3 F3 E. j9 J& H. \; I
请问能否帮助分析,谢谢.' F7 p: ?. E* X: h9 h# o
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