s5pv210（tiny210）gpio地址表

最新推荐文章于 2022-04-27 19:56:31 发布

原创最新推荐文章于 2022-04-27 19:56:31 发布 · 578 阅读

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本文记录了作者在S5PV210（Tiny210）平台进行GPIO操作的经验，详细列出了几个常用GPIO操作的地址，并提供了设置GPIO输出的实例，以助于开发者进行硬件控制。

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画了一个下午点灯，谢天谢地总算点完了，关于s5pv210的地址表一直没找到，这里写下备忘。

#ifndef _S5PV210_GPIO_H
#define _S5PV210_GPIO_H

#define S5PV210_GPIOBASE  (0XE0200000) //基地址

struct s5pc210_gpio_bank {
    unsigned int con;
    unsigned int dat;
    unsigned int pud;
    unsigned int drv;
    unsigned int con_pdn;
    unsigned int pud_pdn;
    unsigned char res1[8];
};

struct s5pv210_gpio {
    struct s5pc210_gpio_bank  gpio_a0;
    struct s5pc210_gpio_bank  gpio_a1;
    struct s5pc210_gpio_bank  gpio_b;
    struct s5pc210_gpio_bank  gpio_c0;
    struct s5pc210_gpio_bank  gpio_c1;
    struct s5pc210_gpio_bank  gpio_d0;
    struct s5pc210_gpio_bank  gpio_d1;
    struct s5pc210_gpio_bank  gpio_e0;
    struct s5pc210_gpio_bank  gpio_e1;
    struct s5pc210_gpio_bank  gpio_f0;
    struct s5pc210_gpio_bank  gpio_f1;
    struct s5pc210_gpio_bank  gpio_f2;
    struct s5pc210_gpio_bank  gpio_f3;
    struct s5pc210_gpio_bank  gpio_g0;
    struct s5pc210_gpio_bank  gpio_g1;
    struct s5pc210_gpio_bank  gpio_g2;
    struct s5pc210_gpio_bank  gpio_g3;
    struct s5pc210_gpio_bank  gpio_i;
    struct s5pc210_gpio_bank  gpio_j0;
    struct s5pc210_gpio_bank  gpio_j1;
    struct s5pc210_gpio_bank  gpio_j2;
    struct s5pc210_gpio_bank  gpio_j3;
    struct s5pc210_gpio_bank  gpio_j4;
};
#endif

几个常用的操作地址的宏

#define   _REG(adr)     (*(volatile unsigned int *)(adr))

#define   readb(adr)      (*(volatile unsigned char *)(adr))
#define   readw(adr)     (*(volatile unsigned short *)(adr))
#define   readl(adr)       (*(volatile unsigned int *)(adr))

#define writeb(value,adr)   ((*(volatile unsigned char *)(adr))=(value))  
#define writew(value,adr)   ((*(volatile unsigned short *)(adr))=(value))   
#define writel(value,adr)   ((*(volatile unsigned int*)(adr))=(value))

使用方法比如设置PA0 最低一位输出高电平

 volatile struct s5pv210_gpio *gpio_base = (volatile struct s5pv210_gpio *)S5PV210_GPIOBASE;

unsigned int temp= _REG(&gpio_base->gpio_a0.con);
temp&= ~0xf;
temp|=0x1;
writel(temp, &gpio_base->gpio_a0.con);
temp=_REG(&gpio_base->gpio_j2.dat);
temp |=0x01;
writel(temp, &gpio_base->gpio_a0.dat);