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支持GPIO中断（外部中断）

This commit is contained in:
勤为本 2017-07-20 17:35:03 +08:00
parent d1bb7c61f4
commit 358612c8a2
4 changed files with 115 additions and 3 deletions
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59
bsp/ls1cdev/libraries/ls1c_gpio.c
View File

@ -204,4 +204,63 @@ unsigned int gpio_get(unsigned int gpio)
}
/**
* 设置中断类型
* @gpio gpio引脚
* @type 触发中断的条件。高电平触发、低电平触发、上升沿触发 or 下降沿触发
*/
void gpio_set_irq_type(unsigned int gpio, gpio_irq_type_t type)
{
volatile unsigned int *int_pol; // 中断极性选择寄存器
volatile unsigned int *int_edge; // 中断边沿选择寄存器
unsigned int port = GPIO_GET_PORT(gpio);
unsigned int pin = GPIO_GET_PIN(gpio);
// 获取寄存器地址
switch (port)
{
case 0: // GPIO[31:0]
int_pol = (volatile unsigned int *)LS1C_INT2_POL;
int_edge = (volatile unsigned int *)LS1C_INT2_EDGE;
break;
case 1: // GPIO[63:32]
int_pol = (volatile unsigned int *)LS1C_INT3_POL;
int_edge = (volatile unsigned int *)LS1C_INT3_EDGE;
break;
case 2: // GPIO[95:64]
int_pol = (volatile unsigned int *)LS1C_INT4_POL;
int_edge = (volatile unsigned int *)LS1C_INT4_EDGE;
break;
}
// 设置中断类型
switch (type)
{
case IRQ_TYPE_EDGE_RISING:
*int_pol |= (1 << pin);
*int_edge |= (1 << pin);
break;
case IRQ_TYPE_EDGE_FALLING:
*int_pol &= ~(1 << pin);
*int_edge |= (1 << pin);
break;
case IRQ_TYPE_LEVEL_HIGH:
*int_pol |= (1 << pin);
*int_edge &= ~(1 << pin);
break;
case IRQ_TYPE_LEVEL_LOW:
*int_pol &= ~(1 << pin);
*int_edge &= ~(1 << pin);
break;
}
return ;
}

20
bsp/ls1cdev/libraries/ls1c_gpio.h
View File

@ -29,6 +29,19 @@ typedef enum{
}gpio_level_t;
typedef enum {
// 上升沿触发
IRQ_TYPE_EDGE_RISING = 0x00000001,
// 下降沿触发
IRQ_TYPE_EDGE_FALLING = 0x00000002,
IRQ_TYPE_EDGE_BOTH = (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING),
// 高电平触发
IRQ_TYPE_LEVEL_HIGH = 0x00000004,
// 低电平触发
IRQ_TYPE_LEVEL_LOW = 0x00000008,
IRQ_TYPE_LEVEL_MASK = (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH),
}gpio_irq_type_t;
/*
@ -73,6 +86,13 @@ unsigned int gpio_get(unsigned int gpio);
/**
* 设置中断类型
* @gpio gpio引脚
* @type 触发中断的条件。高电平触发、低电平触发、上升沿触发 or 下降沿触发
*/
void gpio_set_irq_type(unsigned int gpio, gpio_irq_type_t type);
#endif

34
bsp/ls1cdev/libraries/ls1c_regs.h
View File

@ -74,13 +74,41 @@
// ÖжÏÅäÖüĴæÆ÷
#define LS1C_INT0_SR (0xbfd01040)
#define LS1C_INT0_EN (0xbfd01044)
#define LS1C_INT0_SET (0xbfd01048)
#define LS1C_INT0_CLR (0xbfd0104c)
#define LS1C_INT0_POL (0xbfd01050)
#define LS1C_INT0_EDGE (0xbfd01054)
#define LS1c_INT1_SR (0xbfd01058)
#define LS1C_INT1_EN (0xbfd0105c)
#define LS1C_INT1_SET (0xbfd01060)
#define LS1C_INT1_CLR (0xbfd01064)
#define LS1C_INT1_POL (0xbfd01068)
#define LS1C_INT1_EDGE (0xbfd0106c)
#define LS1C_INT2_SR (0xbfd01070)
#define LS1C_INT2_EN (0xbfd01074)
#define LS1C_INT2_SET (0xbfd01078)
#define LS1C_INT2_CLR (0xbfd0107c)
#define LS1C_INT2_POL (0xbfd01080)
#define LS1C_INT2_EDGE (0xbfd01084)
#define LS1C_INT3_SR (0xbfd01088)
#define LS1C_INT3_EN (0xbfd0108c)
#define LS1C_INT3_SET (0xbfd01090)
#define LS1C_INT3_CLR (0xbfd01094)
#define LS1C_INT3_POL (0xbfd01098)
#define LS1C_INT3_EDGE (0xbfd0109c)
#define LS1C_INT4_SR (0xbfd010a0)
#define LS1C_INT4_EN (0xbfd010a4)
#define LS1C_INT4_SET (0xbfd010a8)
#define LS1C_INT4_CLR (0xbfd010ac)
#define LS1C_INT4_POL (0xbfd010b0)
#define LS1C_INT4_EDGE (0xbfd010b4)

5
libcpu/mips/loongson_1c/ls1c.h
View File

@ -77,6 +77,11 @@
#define LS1C_NR_IRQS (32*5)
// GPIO编号和中断号之间的互相转换
#define LS1C_GPIO_TO_IRQ(GPIOn) (LS1C_GPIO_FIRST_IRQ + (GPIOn))
#define LS1C_IRQ_TO_GPIO(IRQn) ((IRQn) - LS1C_GPIO_FIRST_IRQ)
struct ls1c_intc_regs
{
volatile unsigned int int_isr;