mirror of
https://github.com/RT-Thread/rt-thread.git
synced 2026-09-21 02:06:14 +08:00
144 lines
4.1 KiB
C
144 lines
4.1 KiB
C
// 引脚功能(普通gpio，pwm，复用等)相关接口
|
|
|
|
|
|
#include "ls1c_public.h"
|
|
#include "ls1c_regs.h"
|
|
#include "ls1c_gpio.h"
|
|
#include "ls1c_pin.h"
|
|
|
|
|
|
/*
|
|
* 把指定pin设置为指定用途(普通gpio，非gpio)
|
|
* @gpio gpio引脚编号
|
|
* @purpose 用途
|
|
*/
|
|
void pin_set_purpose(unsigned int gpio, pin_purpose_t purpose)
|
|
{
|
|
volatile unsigned int *gpio_cfgx; // GPIO_CFGx寄存器
|
|
unsigned int pin = GPIO_GET_PIN(gpio);
|
|
|
|
gpio_cfgx = gpio_get_cfg_reg(gpio);
|
|
if (PIN_PURPOSE_GPIO == purpose) // 引脚用作普通gpio
|
|
{
|
|
reg_set_one_bit(gpio_cfgx, pin);
|
|
}
|
|
else // 引脚用作其它功能(非gpio)
|
|
{
|
|
reg_clr_one_bit(gpio_cfgx, pin);
|
|
}
|
|
|
|
return ;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* 设置指定pin为第n复用
|
|
* @gpio gpio编号
|
|
* @remap 第n复用
|
|
*/
|
|
void pin_set_remap(unsigned int gpio, pin_remap_t remap)
|
|
{
|
|
volatile unsigned int *reg = NULL; // 复用寄存器
|
|
unsigned int port = GPIO_GET_PORT(gpio);
|
|
unsigned int pin = GPIO_GET_PIN(gpio);
|
|
|
|
switch (port)
|
|
{
|
|
case 0:
|
|
switch (remap)
|
|
{
|
|
case PIN_REMAP_FIRST:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_FIRST0;
|
|
break;
|
|
case PIN_REMAP_SECOND:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_SECOND0;
|
|
break;
|
|
case PIN_REMAP_THIRD:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_THIRD0;
|
|
break;
|
|
case PIN_REMAP_FOURTH:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_FOURTH0;
|
|
break;
|
|
case PIN_REMAP_FIFTH:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_FIFTH0;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 1:
|
|
switch (remap)
|
|
{
|
|
case PIN_REMAP_FIRST:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_FIRST1;
|
|
break;
|
|
case PIN_REMAP_SECOND:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_SECOND1;
|
|
break;
|
|
case PIN_REMAP_THIRD:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_THIRD1;
|
|
break;
|
|
case PIN_REMAP_FOURTH:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_FOURTH1;
|
|
break;
|
|
case PIN_REMAP_FIFTH:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_FIFTH1;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 2:
|
|
switch (remap)
|
|
{
|
|
case PIN_REMAP_FIRST:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_FIRST2;
|
|
break;
|
|
case PIN_REMAP_SECOND:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_SECOND2;
|
|
break;
|
|
case PIN_REMAP_THIRD:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_THIRD2;
|
|
break;
|
|
case PIN_REMAP_FOURTH:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_FOURTH2;
|
|
break;
|
|
case PIN_REMAP_FIFTH:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_FIFTH2;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 3:
|
|
switch (remap)
|
|
{
|
|
case PIN_REMAP_FIRST:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_FIRST3;
|
|
break;
|
|
case PIN_REMAP_SECOND:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_SECOND3;
|
|
break;
|
|
case PIN_REMAP_THIRD:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_THIRD3;
|
|
break;
|
|
case PIN_REMAP_FOURTH:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_FOURTH3;
|
|
break;
|
|
case PIN_REMAP_FIFTH:
|
|
reg = (volatile unsigned int *)LS1C_CBUS_FIFTH3;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
return ;
|
|
}
|
|
|
|
// 置1
|
|
reg_set_one_bit(reg, pin);
|
|
|
|
return ;
|
|
}
|
|
|
|
|
|
|