DSP

DSP 之GPIO编程

2019-07-13 10:49发布

站内文章 / DSP
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废话少说-直接领略流水灯的乐趣吧！ /******************************************************************************/ /* Copyright 2004 by SEED Electronic Technology LTD. */ /* All rights reserved. SEED Electronic Technology LTD. */ /* Restricted rights to use, duplicate or disclose this code are */ /* granted through contract. */ /* */ /* */ /******************************************************************************/ #include #include #include #include #include void delay(); /*锁相环的设置*/ PLL_Config myConfig = { 0, //IAI: the PLL locks using the same process that was underway //before the idle mode was entered 1, //IOB: If the PLL indicates a break in the phase lock, //it switches to its bypass mode and restarts the PLL phase-locking //sequence 24, //PLL multiply value; multiply 24 times 1 //Divide by 2 PLL divide value; it can be either PLL divide value //(when PLL is enabled), or Bypass-mode divide value //(PLL in bypass mode, if PLL multiply value is set to 1) }; void UserGpio(void) { int val; /* Enable a pin as GPIO pin */ GPIO_pinEnable (GPIO_PIN1); /* Write a value to a GPIO pin */ GPIO_pinWrite(GPIO_PIN1, 2); /* Reads the value in a general purpose input pin */ val = GPIO_pinRead(GPIO_PIN1); printf("Read GPIO_GPIO_PIN1 value = %d ", val); //printf("GPIO register address %d ", GPIO_ADDR(val)); /* reads IOO and IO7 pin values */ val=GPIO_pinRead (GPIO_PIN0| GPIO_PIN1); /* DiEnable a GPIO */ GPIO_pinDisable (GPIO_PIN1); /* Writes value to non-parallel registers using GPIO_config */ //GPIO_config( myConfig); } main() { int i = 10; /*初始化CSL库*/ CSL_init(); /*设置系统的运行速度为144MHz*/ PLL_config(&myConfig); /*确定方向为输出*/ GPIO_RSET(IODIR,0xFF); for(i = 0;i<0x0a;i++) { /*全亮*/ GPIO_RSET(IODATA,0xff); delay(); /*全灭*/ GPIO_RSET(IODATA,0x0); delay(); } /*循环闪烁*/ for(i = 10; i >= 0; i--) { GPIO_RSET(IODATA,0x1); delay(); delay(); GPIO_RSET(IODATA,0x2); delay(); delay(); GPIO_RSET(IODATA,0x4); delay(); delay(); GPIO_RSET(IODATA,0x8); delay(); delay(); GPIO_RSET(IODATA,0x10); delay(); delay(); GPIO_RSET(IODATA,0x40); delay(); delay(); GPIO_RSET(IODATA,0x80); delay(); delay(); } UserGpio(); } // 延时函数 void delay() { Uint32 j = 0,k = 0; for(j = 0;j<0x0c;j++) { for(k= 0;k<0xffff;k++) {} } }
  让生命中的每一份执着都像流水灯一样，允不停息的闪烁下去吧！    

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