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你好,请问:
. J% W& t% c2 A咨询你个问题:我是omapl138芯片,自带arm和dsp;
, N8 B4 F, ^! c8 j' H7 ^2 Tarm linux已经运行,dsp端操作gpio,arm端通过syslink控制dsp端gpio操作,在dsp端的gpio操作需要什么样的配置?与arm是否会冲突?是否有相关demo?
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我dsp端的gpio初始化:
v* E$ N$ u2 K#define PINMUX0_GPIO0_13_ENABLE (SYSCFG_PINMUX0_PINMUX0_11_8_GPIO0_13 << \; j2 x& V4 C m/ X% ?2 V
SYSCFG_PINMUX0_PINMUX0_11_8_SHIFT)" |2 @7 J& f# d' f- P
4 i; O7 _& p, C9 g6 b3 nvoid GPIOBank0Pin13PinMuxSetup(void)
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( Y f% v: W- j- W$ b unsigned int savePinmux = 0;
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/*
, z [# g t* U% g2 |8 h4 L ** Clearing the bit in context and retaining the other bit values
( e! z5 _ r9 P' f7 y. i! f3 { ** in PINMUX0 register.( ], x" i2 W! a
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savePinmux = (HWREG(SOC_SYSCFG_0_REGS + SYSCFG0_PINMUX(0)) &% }! E0 v; v; n% {3 V
~(SYSCFG_PINMUX0_PINMUX0_11_8));) d# e4 N4 o3 u2 W
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/* Setting the pins corresponding to GP0[13] in PINMUX14 register.*/
6 y/ G0 F& X2 L, [+ h$ y4 y HWREG(SOC_SYSCFG_0_REGS + SYSCFG0_PINMUX(0)) =% U$ g1 ^# L, S# [$ i' o' s
(PINMUX0_GPIO0_13_ENABLE | savePinmux);# I5 p3 L4 Z, p' m l: G
$ H" C0 ] E" |# [6 J. J% {}
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2 u6 y1 z, i! G3 [' Bint init(){
# {9 `8 P9 p" _4 qPSCModuleControl(SOC_PSC_1_REGS, HW_PSC_GPIO, PSC_POWERDOMAIN_ALWAYS_ON, PSC_MDCTL_NEXT_ENABLE);
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/ y. {# D5 d. Y: \GPIOBank0Pin13PinMuxSetup();; }. D8 Z, G* p5 D6 w7 G" D0 e
d N) a( { m5 m5 ?GPIODirModeSet(SOC_GPIO_0_REGS, FPP_NSTATUS_GPIO0_13, GPIO_DIR_INPUT);! Q4 M: B0 l6 Z/ H/ [0 ?* m
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- O) W! Q5 Y+ k+ [这个样初始化是否有问题?是否会跟arm端冲突?
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