H3_ircut.c
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#include "H3_ircut.h"
#include <wiringPi.h>
#define AC 7
#define AC2 19
//���ܣ�����GPIOΪ����
int now_ircut_mode=0;
int gpio_test_in(unsigned int gpio_chip_num, unsigned int gpio_offset_num)
{
FILE *fp;
char file_name[50];
unsigned char buf[10];
unsigned int gpio_num;
gpio_num = gpio_chip_num * 8 + gpio_offset_num;
sprintf(file_name, "/sys/class/gpio/export");//��Ҫ������ GPIO ��� export
fp = fopen(file_name, "w");
if (fp == NULL)
{
printf("Cannot open %s.\n", file_name);
return -1;
}
fprintf(fp, "%d", gpio_num);
fclose(fp);
sprintf(file_name, "/sys/class/gpio/gpio%d/direction", gpio_num);//���� GPIO ����
fp = fopen(file_name, "rb+");
if (fp == NULL)
{
printf("Cannot open %s.\n", file_name);
return -1;
}
fprintf(fp, "in");//��������
fclose(fp);
sprintf(file_name, "/sys/class/gpio/gpio%d/value", gpio_num);//�鿴 GPIO ����ֵ��
fp = fopen(file_name, "rb+");
if (fp == NULL)
{
printf("Cannot open %s.\n", file_name);
return -1;
}
memset(buf, 0, 10);
fread(buf, sizeof(char), sizeof(buf) - 1, fp);
printf("%s: gpio%d_%d = %d\n", __func__,gpio_chip_num, gpio_offset_num, buf[0]-48);
fclose(fp);
sprintf(file_name, "/sys/class/gpio/unexport");
fp = fopen(file_name, "w");
if (fp == NULL)
{
printf("Cannot open %s.\n", file_name);
return -1;
}
fprintf(fp, "%d", gpio_num);
fclose(fp);
return (int)(buf[0]-48);
}
//���ܣ�����GPIO���
int gpio_test_out(unsigned int gpio_chip_num, unsigned int gpio_offset_num,unsigned int gpio_out_val)
{
FILE *fp;
char file_name[50];
unsigned char buf[10];
unsigned int gpio_num;
gpio_num = gpio_chip_num * 8 + gpio_offset_num;
sprintf(file_name, "/sys/class/gpio/export");
fp = fopen(file_name, "w");
if (fp == NULL)
{
printf("Cannot open %s.\n", file_name);
return -1;
}
fprintf(fp, "%d", gpio_num);
fclose(fp);
sprintf(file_name, "/sys/class/gpio/gpio%d/direction", gpio_num);
fp = fopen(file_name, "rb+");
if (fp == NULL)
{
printf("Cannot open %s.\n", file_name);
return -1;
}
fprintf(fp, "out");
fclose(fp);
sprintf(file_name, "/sys/class/gpio/gpio%d/value", gpio_num);
fp = fopen(file_name, "rb+");
if (fp == NULL)
{
printf("Cannot open %s.\n", file_name);
return -1;
}
if (gpio_out_val)
strcpy(buf,"1");
else
strcpy(buf,"0");
fwrite(buf, sizeof(char), sizeof(buf) - 1, fp);
printf("%s: gpio%d_%d = %s\n", __func__,gpio_chip_num, gpio_offset_num, buf);
fclose(fp);
sprintf(file_name, "/sys/class/gpio/unexport");
fp = fopen(file_name, "w");
if (fp == NULL)
{
printf("Cannot open %s.\n", file_name);
return -1;
}
fprintf(fp, "%d", gpio_num);
fclose(fp);
return 0;
}
void set_mute(int mutemode){//��������
if(mutemode==1)
{//ȡ������
//gpio_test_out(1,2,1);//gpio1_2 �����
}
if(mutemode==0)
{//����
//gpio_test_out(1,2,0);//gpio1_2 �����
}
else{
printf("mutemode error\n");
}
}
void H3_init_amplifier(void){
wiringPiSetup() ; //��ʼ��GPIO
pinMode (AC, OUTPUT) ;//�������ģʽ
digitalWrite(AC,LOW);
pinMode (AC2, OUTPUT) ;//�������ģʽ
digitalWrite(AC2,LOW);
}
void H3_set_amplifier(int amplifier_mode){//���ſ���
if(amplifier_mode==1)
{//���Ŵ�
if(now_ircut_mode==0){
digitalWrite(AC,HIGH);//gpio1_3 �����
digitalWrite(AC2,HIGH);//gpio1_3 �����
now_ircut_mode=1;
printf("open!!!\n");
}
//gpio_test_out(1,2,1);//gpio1_2 �����
return;
}
if(amplifier_mode==0)
{//���Źر�
if(now_ircut_mode==1){
digitalWrite(AC,LOW);
digitalWrite(AC2,LOW);//gpio1_3 �����
now_ircut_mode=0;
printf("close!!!\n");
}
//gpio_test_out(1,2,0);//gpio1_2 �����
return;
}
else{
printf("amplifier_mode error\n");
return;
}
}