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你好,请问:! G* `5 {1 c* ]5 c* ~
咨询你个问题:我是omapl138芯片,自带arm和dsp;5 D7 N5 _7 n. {6 \' L
arm 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:4 K3 [! J+ w0 B8 b7 J
#define PINMUX0_GPIO0_13_ENABLE (SYSCFG_PINMUX0_PINMUX0_11_8_GPIO0_13 << \0 I0 V% ^$ ^" P* K3 D$ x: \! _
SYSCFG_PINMUX0_PINMUX0_11_8_SHIFT)$ E1 C" _' j' p8 _) d6 E) U
4 N) r% n, h) K3 ]" jvoid GPIOBank0Pin13PinMuxSetup(void)0 w, M# Q) N' I0 A" d* W; V
{
* @9 v) m" m5 {. F6 e# U$ t unsigned int savePinmux = 0;8 V) j1 o3 a! z7 E" D% ]7 t
' ~0 W9 p, p R: G; I% G5 ~0 c /*
9 S. }0 O- D% j' h6 s& X ** Clearing the bit in context and retaining the other bit values0 K8 r8 G4 h# b& Q! e
** in PINMUX0 register.
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2 e% i5 f$ l6 K; T y, v1 d( i savePinmux = (HWREG(SOC_SYSCFG_0_REGS + SYSCFG0_PINMUX(0)) &% _% z r. W$ G# g
~(SYSCFG_PINMUX0_PINMUX0_11_8));
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7 J- `( T% _* Z) a8 E /* Setting the pins corresponding to GP0[13] in PINMUX14 register.*/
1 L8 u1 ?/ _! h HWREG(SOC_SYSCFG_0_REGS + SYSCFG0_PINMUX(0)) =( b$ N6 {+ X' ?: C8 T5 k% j
(PINMUX0_GPIO0_13_ENABLE | savePinmux);, O- B+ h( E+ A6 ?' K
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int init(){2 m$ w5 \, G$ U
PSCModuleControl(SOC_PSC_1_REGS, HW_PSC_GPIO, PSC_POWERDOMAIN_ALWAYS_ON, PSC_MDCTL_NEXT_ENABLE);
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9 |3 I4 c9 V4 o+ QGPIOBank0Pin13PinMuxSetup();
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GPIODirModeSet(SOC_GPIO_0_REGS, FPP_NSTATUS_GPIO0_13, GPIO_DIR_INPUT);
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, e/ M6 U% Z5 |. s这个样初始化是否有问题?是否会跟arm端冲突?, z3 {; W+ Y, V7 v* Q( m
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