gpio.c
上传用户:rim_feng
上传日期:2022-07-29
资源大小:252k
文件大小:3k
- /******************************************************************************/
- /* 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. */
- /* */
- /* */
- /******************************************************************************/
- /*----------------------------------------------------------------------------*/
- /* MODULE NAME... GPIO */
- /* FILENAME...... gpio.c */
- /* DATE CREATED.. Wed 2/4/2004 */
- /* PROJECT....... write and read data between the CPU and SDRAM */
- /* COMPONENT..... */
- /* PREREQUISITS.. */
- /*----------------------------------------------------------------------------*/
- /*----------------------------------------------------------------------------*/
- /* DESCRIPTION: */
- /* */
- /* This is an example for gpio of C5509 */
- /*----------------------------------------------------------------------------*/
- #include <csl.h>
- #include <csl_pll.h>
- #include <csl_chip.h>
- #include <csl_gpio.h>
- 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)
- };
- main()
- {
- /*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);
- while(1)
- {
-
- GPIO_RSET(IODATA,0x0c0);
- delay();
-
- GPIO_RSET(IODATA,0x80);
- delay();
- }
- }
- void delay()
- {
- Uint32 j = 0,k = 0;
- for(j = 0;j<0x30;j++)
- {
- for(k= 0;k<0xffff;k++)
- {}
- }
- }
- /******************************************************************************
- * End of gpio.c
- ******************************************************************************/