Could anybody help me ?It's a ADS1115 .Please look at the following states:
include #include #pragma LINK_INFO DERIVATIVE "mc9s12dg128b" #define SDA PORTA_BIT6 #define SCL PORTA_BIT7 #define uint8_t unsigned char
通过I2C总线配置ADS1113
注意:ADS115地址为1001000
此处程序需要修改
********************************************************************/
void Confige1113 (void)
{
unsigned char i;
table[0] = 0x90; //CMD_Write,ADS115地址为1001000;
table[1] = 0x01; //指向配置寄存器
table[2] = 0x90; //设置配置寄存器的高八位0000 0000;连续转换模式
table[3] = 0x00; //设置配置寄存器的低八位1000 0000,即转换速率为128SPS
I2C_START(); //发送起始信号
for(i=0;i<4;i++)
{
I2C_send(table[i]);//将table里面的数写入ads1115
check_ack(); //检查ADS1115的ACK信号
if(I2C_ERROR==1) //如果ADS115无ACK信号则退出
break;
}
I2C_STOP(); //发送停止信号
Why my finally result always output 00000. Is it any wrong about timing? I’m a new hand.Please help me!!
NOTE: I have made a link in the above-mentioned ADS1115,if you need something about it,please click it.
Your help will be appreciated!
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Could anybody help me ?It's a ADS1115 .Please look at the following states:
include
#include
#pragma LINK_INFO DERIVATIVE "mc9s12dg128b"
#define SDA PORTA_BIT6
#define SCL PORTA_BIT7
#define uint8_t unsigned char
/*************************************/
/串口初始化及发送/
/*************************************/
void Sci0open(void)
{
SCI0BD=54; //9600波特率设置
SCI0CR1=0x00; //正常8位模式,无奇偶校验位
SCI0CR2=0X2C; //接收中断允许
}
void Sci_send(char k) //发一个字符
{
SCI0SR1_TDRE=1;
SCI0DRL=k;
}
void Sci_send_String(char *p) //发字符串
{
while(*p)
{
Sci_send(*p);
p++;
delay(2);
}
}
/*******************************************************************
起动总线函数
函数原型: void Start_I2c();
功能: 启动I2C总线,即发送I2C起始条件.
******************************************************************/
void I2C_START()
{
SDA=1; /发送起始条件的数据信号/
Delay1us(20);
SCL=1;
Delay1us(20); /起始条件建立时间大于4us,延时/
SDA=0; /发送起始信号/
Delay1us(20); /* 起始条件锁定时间大于4μs*/
SCL=0; /*钳住I2C总线,准备发送或接收数据 */
Delay1us(20);
}
/*****************************************************************
结束总线函数
函数原型: void Stop_I2c();
功能: 结束I2C总线,即发送I2C结束条件.
/********************************************************************
通过I2C总线配置ADS1113
注意:ADS115地址为1001000
此处程序需要修改
********************************************************************/
void Confige1113 (void)
{
unsigned char i;
table[0] = 0x90; //CMD_Write,ADS115地址为1001000;
table[1] = 0x01; //指向配置寄存器
table[2] = 0x90; //设置配置寄存器的高八位0000 0000;连续转换模式
table[3] = 0x00; //设置配置寄存器的低八位1000 0000,即转换速率为128SPS
I2C_START(); //发送起始信号
for(i=0;i<4;i++)
{
I2C_send(table[i]);//将table里面的数写入ads1115
check_ack(); //检查ADS1115的ACK信号
if(I2C_ERROR==1) //如果ADS115无ACK信号则退出
break;
}
I2C_STOP(); //发送停止信号
Why my finally result always output 00000. Is it any wrong about timing? I’m a new hand.Please help me!!
NOTE: I have made a link in the above-mentioned ADS1115,if you need something about it,please click it.
Your help will be appreciated!