[RK1108][Linux3.1]应用笔记 - ADC读取

平台	内核版本
RK1108	Linux3.1

命令行读取

cat /sys/class/lightsensor/lsr_0/value查看adc值

程序读取

FILE *light = NULL;
char adc_buff[100] ={0};
int adc;

light = fopen("/sys/class/lightsensor/lsr_0/value","r");
if(light != NULL){
	fseek(light, 0, 0);
	fread(adc_buff , 1, 4 ,light);
	adc = atoi(adc_buff);
	printf("yang value = %d \r\n",adc);
	fclose(light);
}