APDS-9930 驱动例程
时间: 2023-07-22 16:32:11 浏览: 128
以下是APDS-9930的C51驱动例程,供参考:
```c
#include <reg51.h>
#include <intrins.h>
#define APDS9930_ADDR_WRITE 0x72
#define APDS9930_ADDR_READ 0x73
#define APDS9930_ENABLE_ADDR 0x80
#define APDS9930_ATIME_ADDR 0x81
#define APDS9930_CONTROL_ADDR 0x8F
#define APDS9930_ID_ADDR 0x92
#define APDS9930_STATUS_ADDR 0x93
#define APDS9930_CDATA_L_ADDR 0x94
#define APDS9930_CDATA_H_ADDR 0x95
#define APDS9930_RDATAL_ADDR 0x96
#define APDS9930_RDATAH_ADDR 0x97
sbit SDA = P2^1;
sbit SCL = P2^0;
void delay_us(unsigned int t)
{
while(t--)
{
_nop_();
}
}
void I2C_start()
{
SDA = 1;
SCL = 1;
delay_us(5);
SDA = 0;
delay_us(5);
SCL = 0;
}
void I2C_stop()
{
SDA = 0;
SCL = 1;
delay_us(5);
SDA = 1;
delay_us(5);
}
void I2C_send_byte(unsigned char dat)
{
unsigned char i;
for(i=0; i<8; i++)
{
SDA = (dat & 0x80) >> 7;
dat <<= 1;
SCL = 1;
delay_us(5);
SCL = 0;
delay_us(5);
}
SDA = 1;
SCL = 1;
delay_us(5);
SCL = 0;
}
unsigned char I2C_read_byte(unsigned char ack)
{
unsigned char i,dat=0;
SDA = 1;
for(i=0; i<8; i++)
{
SCL = 1;
delay_us(5);
dat <<= 1;
dat |= SDA;
SCL = 0;
delay_us(5);
}
SDA = ack;
SCL = 1;
delay_us(5);
SCL = 0;
SDA = 1;
return dat;
}
void I2C_write_reg(unsigned char addr, unsigned char dat)
{
I2C_start();
I2C_send_byte(APDS9930_ADDR_WRITE);
I2C_send_byte(addr);
I2C_send_byte(dat);
I2C_stop();
}
unsigned char I2C_read_reg(unsigned char addr)
{
unsigned char dat;
I2C_start();
I2C_send_byte(APDS9930_ADDR_WRITE);
I2C_send_byte(addr);
I2C_start();
I2C_send_byte(APDS9930_ADDR_READ);
dat = I2C_read_byte(0);
I2C_stop();
return dat;
}
void APDS9930_init()
{
I2C_write_reg(APDS9930_ENABLE_ADDR, 0x03);
I2C_write_reg(APDS9930_ATIME_ADDR, 0xFF);
I2C_write_reg(APDS9930_CONTROL_ADDR, 0x00);
}
unsigned char APDS9930_read_id()
{
return I2C_read_reg(APDS9930_ID_ADDR);
}
unsigned char APDS9930_read_status()
{
return I2C_read_reg(APDS9930_STATUS_ADDR);
}
unsigned int APDS9930_read_cdata()
{
unsigned char l,h;
l = I2C_read_reg(APDS9930_CDATA_L_ADDR);
h = I2C_read_reg(APDS9930_CDATA_H_ADDR);
return (h << 8) | l;
}
unsigned int APDS9930_read_rdata()
{
unsigned char l,h;
l = I2C_read_reg(APDS9930_RDATAL_ADDR);
h = I2C_read_reg(APDS9930_RDATAH_ADDR);
return (h << 8) | l;
}
void main()
{
unsigned char id,status;
unsigned int cdata,rdata;
APDS9930_init();
id = APDS9930_read_id();
status = APDS9930_read_status();
cdata = APDS9930_read_cdata();
rdata = APDS9930_read_rdata();
while(1);
}
```
这是一个简单的例程,实现了APDS-9930的初始化和读取ID、状态、环境光数据、接近物体数据等功能。需要注意的是,具体的驱动程序实现会受到硬件环境和具体需求的影响,因此需要根据具体情况进行调整和优化。