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你好,请问:; z8 k4 x2 N1 S# z9 O
咨询你个问题:我是omapl138芯片,自带arm和dsp;
" j' O% t6 `7 h0 ]+ E9 t8 earm 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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7 C u6 {6 x$ ]0 g0 F我dsp端的gpio初始化:- o8 w8 U! h! y V9 q
#define PINMUX0_GPIO0_13_ENABLE (SYSCFG_PINMUX0_PINMUX0_11_8_GPIO0_13 << \% o9 q9 N8 ]6 I* ?7 o5 s$ `
SYSCFG_PINMUX0_PINMUX0_11_8_SHIFT) X7 r/ R5 F4 K) C" l0 X
( _9 t8 b2 a$ G1 evoid GPIOBank0Pin13PinMuxSetup(void)
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/ L+ r0 \5 ]7 B F [: e) x unsigned int savePinmux = 0;
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; i* ~' ~/ j% l3 ]5 U* I7 I) ]4 }' a3 x# ] /*
3 {! R& {) A# ?4 B7 p* ^0 ` ** Clearing the bit in context and retaining the other bit values& _* R G) r; G, |: g+ U
** in PINMUX0 register.# W* W6 @9 ~7 W
*/
; {& ]# H6 {: c+ f savePinmux = (HWREG(SOC_SYSCFG_0_REGS + SYSCFG0_PINMUX(0)) &
9 A" r6 g9 `8 H3 `: d ~(SYSCFG_PINMUX0_PINMUX0_11_8));0 N$ g% S8 |6 `8 u
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/* Setting the pins corresponding to GP0[13] in PINMUX14 register.*/4 T1 w d' R/ \; _
HWREG(SOC_SYSCFG_0_REGS + SYSCFG0_PINMUX(0)) =" G2 ]' f+ Z, s0 {
(PINMUX0_GPIO0_13_ENABLE | savePinmux);
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' I; a* A; ~/ r0 hint init(){
2 z% t; N" D R( T8 XPSCModuleControl(SOC_PSC_1_REGS, HW_PSC_GPIO, PSC_POWERDOMAIN_ALWAYS_ON, PSC_MDCTL_NEXT_ENABLE);
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GPIOBank0Pin13PinMuxSetup();* q( c! N3 b- e
$ o+ T1 f& ^/ n# d: cGPIODirModeSet(SOC_GPIO_0_REGS, FPP_NSTATUS_GPIO0_13, GPIO_DIR_INPUT);+ u# O6 z5 L$ M# T0 U, H' O
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这个样初始化是否有问题?是否会跟arm端冲突?
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