基于的ads程序編寫

1、/*-*/ /*-*功能： 【ADS1115單端輸入檢測電壓】*-*/*-*CPU： 【STC12C5A60S2】*-*/*-*ADC芯片：【ADS1115（2差分輸入或4單端輸入）】*-*/*-*液晶： 【LCD1602】*-*/*-*ADC與單片機連接：【SCL:P1.0 , SDA:P1.1】*-*/*-*檢測范圍：【0.004.99V】*-*/*-*/ #include <reg52.h>#include <intrins.h>#define uint unsigned int#define uchar unsigned char#define _Nop() _

2、nop_()/*-以下為LCD1602顯示模塊端口定義及函數聲明-*/sbit lcd_rs_port = P17; /*定義LCD控制端口*/sbit lcd_rw_port = P16;sbit lcd_en_port = P24;#define lcd_data_port P0unsigned char num_char_table = "0123456789ABCDEF"unsigned char Lcd_Dis1_table = "Volt: V "/電壓顯示框架unsigned char pos_char_table = " 67.

3、9AB V "/電壓顯示位置void lcd_delay(uchar ms);/LCD1602 延時void lcd_busy_wait(); /LCD1602 忙等待void lcd_command_write(uchar command); /LCD1602 命令字寫入void lcd_system_reset();/LCD1602 初始化void lcd_char_write(uchar x_pos,y_pos,lcd_dat); /LCD1602 字符寫入void lcd_bad_check(); /LCD1602 壞點檢查void Num_to_Disp(uint Num)

4、;/LCD1602 數據處理void LcdDisp(uint num);/LCD1602 數據顯示void delay_1ms(uchar x);/LCD1602 延時1ms/*-以下為ADS1115模塊端口定義及函數聲明-*/sbit SCL = P10;sbit SDA = P11;#define TRUE 1#define FALSE 0unsigned int Config;unsigned char Writebuff4,Readbuff3;unsigned int Result2; int D_ADS; /轉換的數字量#define Accuracy 32768 /定義ADC精度

5、，ADS1115單端輸入時15位char VCC = 4.78; /VCC，電壓參考值#define ADDRESS_0 0x90 /ADDR PIN ->GND#define ADDRESS_1 0x92 /ADDR PIN ->VDD#define ADDRESS_2 0x94 /ADDR PIN ->SDA#define ADDRESS_3 0x96 /ADDR PIN ->SCL/*POINTER REGISTER*/#define Pointer_0 0x00 /Convertion register#define Pointer_1 0x01 /Config

6、 register#define Pointer_2 0x02 /Lo_thresh register#define Pointer_3 0x03 /Hi_thresh register/*CONFIG REGISTER*/#define OS_0 0x0000#define OS_1 0x8000#define MUX_0 0x0000 /AINp=AIN0, AINn=AIN1#define MUX_1 0x1000 /AINp=AIN0, AINn=AIN3#define MUX_2 0x2000 /AINp=AIN1, AINn=AIN3#define MUX_3 0x3000 /AI

7、Np=AIN2, AINn=AIN3#define MUX_4 0x4000 /AINp=AIN0, AINn=GND#define MUX_5 0x5000 /AINp=AIN1, AINn=GND#define MUX_6 0x6000 /AINp=AIN2, AINn=GND#define MUX_7 0x7000 /AINp=AIN3, AINn=GND#define PGA_0 0x0000 /FS=6.144V#define PGA_1 0x0200 /FS=4.096V#define PGA_2 0x0400 /FS=2.048V#define PGA_3 0x0600 /FS=

8、1.024V#define PGA_4 0x0800 /FS=0.512V#define PGA_5 0x0A00 /FS=0.256V#define PGA_6 0x0C00 /FS=0.256V#define PGA_7 0x0E00 /FS=0.256V#define MODE_0 0x0000#define MODE_1 0x0100#define DR_0 0x0000 /Data Rate = 8#define DR_1 0x0020 /Data Rate = 16#define DR_2 0x0040 /Data Rate = 32#define DR_3 0x0060 /Dat

9、a Rate = 64#define DR_4 0x0080 /Data Rate = 128#define DR_5 0x00A0 /Data Rate = 250#define DR_6 0x00C0 /Data Rate = 475#define DR_7 0x00E0 /Data Rate = 860#define COMP_MODE_0 0x0000#define COMP_MODE_1 0x0010#define COMP_POL_0 0x0000#define COMP_POL_1 0x0008#define COMP_LAT_0 0x0000#define COMP_LAT_1

10、 0x0040#define COMP_QUE_0 0x0000#define COMP_QUE_1 0x0001#define COMP_QUE_2 0x0002#define COMP_QUE_3 0x0003/*ADDR Initial*/#define ADDRESS ADDRESS_0 /ADDR PIN ->GND#define ADDRESS_W ADDRESS|0x00 /寫地址#define ADDRESS_R ADDRESS|0x01 /讀地址/*Config Initial*/#define OS OS_1#define MUX_A0 MUX_4 /AINp=AIN

11、0, AINn=GND#define MUX_A1 MUX_5 /AINp=AIN1, AINn=GND#define MUX_A2 MUX_6 /AINp=AIN2, AINn=GND#define MUX_A3 MUX_7 /AINp=AIN3, AINn=GND#define PGA PGA_1 /FS=6.144V#define MODE MODE_1 /Continuous conversion mode#define DR DR_7 /Data Rate = 860#define COMP_QUE COMP_QUE_3void Delay_us_15 (void);void Del

12、ay_ms_1 (void); /功 能：延時void Start(void); /功 能：完成IIC的起始條件操作void Stop(void); /功 能：完成IIC的終止條件操作void ACK(void); /功 能：完成IIC的主機應答操作void NACK(void); /功 能：完成IIC的主機無應答操作unsigned char Check(void);/功 能：檢查從機的應答操作void Write_1_Byte(unsigned char DataByte);/寫 1個字節(jié)unsigned char Write_N_Byte(unsigned char *writebuff

13、er,unsigned char n);/寫 N個字節(jié)unsigned char Read_1_Byte(void);/讀 1個字節(jié)void Read_N_Byte(unsigned int *readbuff,unsigned char n);/讀 N個字節(jié)void InitADS1115(bit S_MUX_0, bit S_MUX_1);/ADS1115初始化void WriteWord(void);/寫void ReadWord(void);/讀unsigned int ADS1115(bit S_MUX_0, bit S_MUX_1);/ADS1115取值/*-*/*-*【 主函數

14、】*-*/*-*/void main()unsigned int result;lcd_system_reset(); /LCD1602 初始化lcd_bad_check(); /LCD1602 壞點檢查while(1)result = ADS1115(0,0);/ADS1115取值_AIN0/result = ADS1115(0,1);/ADS1115取值_AIN1/result = ADS1115(1,0);/ADS1115取值_AIN2/result = ADS1115(1,1);/ADS1115取值_AIN3LcdDisp(result);/LCD1602顯示電壓值/*-*/*-*-*

15、/*-*/*-以下為LCD1602顯示模塊函數定義-*/void lcd_delay(uchar ms) /*LCD1602 延時*/ uchar j; while(ms-) for(j=0;j<250;j+) ; void lcd_busy_wait() /*LCD1602 忙等待*/ lcd_rs_port = 0; lcd_rw_port = 1; lcd_en_port = 1; lcd_data_port = 0xff; while (lcd_data_port&0x80); lcd_en_port = 0; void lcd_command_write(uchar c

16、ommand) /*LCD1602 命令字寫入*/ lcd_busy_wait(); lcd_rs_port = 0; lcd_rw_port = 0; lcd_en_port = 0; lcd_data_port = command; lcd_en_port = 1; lcd_en_port = 0; void lcd_system_reset() /*LCD1602 初始化*/ lcd_delay(20); lcd_command_write(0x38); lcd_delay(100); lcd_command_write(0x38); lcd_delay(50); lcd_command

17、_write(0x38); lcd_delay(10); lcd_command_write(0x08); lcd_command_write(0x01); lcd_command_write(0x06); lcd_command_write(0x0c); void lcd_char_write(uchar x_pos,y_pos,lcd_dat) /*LCD1602 字符寫入*/ x_pos &= 0x0f; /* X位置范圍 015 */ y_pos &= 0x01; /* Y位置范圍 0 1 */ if(y_pos=1) x_pos += 0x40; x_pos += 0

18、x80; lcd_command_write(x_pos); lcd_busy_wait(); lcd_rs_port = 1; lcd_rw_port = 0; lcd_en_port = 0; lcd_data_port = lcd_dat; lcd_en_port = 1; lcd_en_port = 0; void lcd_bad_check() /*LCD1602 壞點檢查*/ char i,j; for(i=0;i<2;i+) for(j=0;j<16;j+) lcd_char_write(j,i,0xff); lcd_delay(200); lcd_delay(200

19、);lcd_delay(200);lcd_delay(100);lcd_delay(200); lcd_command_write(0x01); / clear lcd disp void Num_to_Disp(uint Num) /*LCD顯示數據處理*/ /Start_1-Over_1:顯示電壓值，Start_2-Over_2:顯示ADS1115輸出數值 float NUM; /Start_1int xx, yy, zz, zzz;NUM = (Num / (float)Accuracy) * VCC;/ADS1115取值 = Accuracy × (Vin / VCC)xx

20、= (int)NUM;yy = (int)(NUM - (float)(xx) * 10);zz = (int)(NUM - (float)(xx) * 100)%10;zzz = (int)(NUM - (float)(xx) * 1000)%10;pos_char_table6 = num_char_tablexx / 10; /電壓值十位pos_char_table7= num_char_tablexx % 10;/電壓值個位pos_char_table9= num_char_tableyy;/電壓值小數點后一位pos_char_table10= num_char_tablezz;/電壓

21、值小數點后兩位pos_char_table11= num_char_tablezzz; /電壓值小數點后三位 /Over_1/*pos_char_table6 = num_char_tableNum / 10000; /Start_2pos_char_table7 = num_char_table(Num % 10000) / 1000;pos_char_table8= num_char_table(Num % 10) % 1000) / 100;pos_char_table9= num_char_table(Num / 10) % 10;pos_char_tableA= num_char_t

22、ableNum % 10; /Over_2*/void LcdDisp(uint num) /*LCD顯示*/uint i=0;for (i=0;i<16;i+) lcd_char_write(i,0,Lcd_Dis1_tablei); /顯示框架 Num_to_Disp(num);for(i = 6; i < 12; i+)lcd_char_write(i,0,pos_char_tablei); /顯示電壓 delay_1ms(100);void delay_1ms(uchar x) /*1MS為單位的延時程序*/ uchar j; while(x-) for(j=0;j<

23、125;j+) ; /*-以下為ADS1115模塊端口函數定義-*/void Delay_us_15 (void) /*延時程序*/ unsigned char i; for(i = 0;i < 15;i+) _nop_();void Delay_ms_1 (void)unsigned char i;for(i = 150;i > 0;i-) _nop_();/*/函數名稱：Start/功 能：完成IIC的起始條件操作/參 數：無/返回值 ：無/*/void Start(void) SCL=1; SDA=1; Delay_us_15 ();SDA=0; Delay_us_15 ()

24、;SCL=0; Delay_us_15 ();/*/函數名稱：Stop/功 能：完成IIC的終止條件操作/參 數：無/返回值 ：無/*/void Stop(void) SDA=0; Delay_us_15 (); SCL=1; Delay_us_15 ();SDA=1; Delay_us_15 ();/*/函數名稱：ACK/功 能：完成IIC的主機應答操作/參 數：無/返回值 ：無/*/void ACK(void) SDA=0; _nop_(); _nop_(); SCL=1; Delay_us_15 (); SCL=0;_nop_(); _nop_();SDA=1; Delay_us_15

25、();/*/函數名稱：NACK/功 能：完成IIC的主機無應答操作/參 數：無/返回值 ：無/*/void NACK(void)SDA=1;_nop_(); _nop_();SCL=1;Delay_us_15 ();SCL=0;_nop_(); _nop_();SDA=0; Delay_us_15 (); /*檢查應答信號函數*/*如果返回值為1則證明有應答信號，反之沒有*/*/函數名稱：Check/功 能：檢查從機的應答操作/參 數：無/返回值 ：從機是否有應答：1-有，0-無/*/unsigned char Check(void) unsigned char slaveack; SDA=1

26、; _nop_(); _nop_(); SCL=1; _nop_(); _nop_(); _nop_(); _nop_(); slaveack = SDA; /讀入SDA數值 SCL=0; Delay_us_15 (); if(slaveack) return FALSE; else return TRUE;/*Write a Byte*/void Write_1_Byte(unsigned char DataByte)int i;for(i=0;i<8;i+)if(DataByte&0x80) /if(DataByte<<i)&0x80) SDA=1;els

27、e SDA=0; Delay_us_15 ();SCL=1; Delay_us_15 (); SCL=0; Delay_us_15 (); DataByte <<= 1; SDA=1; _nop_(); /*Write N Byte*/unsigned char Write_N_Byte(unsigned char *writebuffer,unsigned char n)int i;for(i=0;i<n;i+)Write_1_Byte(*writebuffer);if(Check()writebuffer +;elseStop(); return FALSE;Stop()

28、;return TRUE;/*Read a Byte*/unsigned char Read_1_Byte(void) unsigned char data_Value = 0, FLAG, i; for(i=0;i<8;i+) SDA=1;Delay_us_15 (); SCL=1;Delay_us_15 (); FLAG=SDA; data_Value <<= 1;if( FLAG) data_Value |= 0x01; SCL=0; Delay_us_15 (); return data_Value;/*Read N Byte*/void Read_N_Byte(unsigned int*readbuff, unsigned char n)unsigned char i;for(i=0;i<n;i+)readbuffi=Read_1_Byte();if(i=n-1)NACK(); /不連續(xù)讀字節(jié)else ACK(); /連續(xù)讀字節(jié)Stop();/*初始化*/void InitADS1115(bit S_MUX_0, bit S_MUX_1)if (S_MUX_0