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//C8051F005的AD驱动程序(C语言)
//-----------------------------------------------------------------------------
// Includes
//-----------------------------------------------------------------------------
#include<C8051F000.H>
#include<STDIO.H>
//-----------------------------------------------------------------------------
// Function PROTOTYPES
//-----------------------------------------------------------------------------
#define uchar unsigned char
#define uint unsigned int
void SYSCLK_Init (void);
void delaynus(unsigned int q) ; //N us延时函数
void PORT_Init (void);
void SPI0_Init (void);
void LCD_Init(void);
void SendSPIByte(unsigned char ch);
void delaynms (unsigned int j);
void writecom(unsigned char com);
void writedata(unsigned char d);
void writechar(unsigned char ua);
void lcd_Net(void);
void Write_COM(uchar ins);
void SendSPIByte(uchar disdata);
void lcden(datad);
void LCD_set_xy( unsigned char x, unsigned char y );
void lcd_xhl(void);
void LCD_write_string(unsigned char n);
void lcd_adc(void);
void UART0_Init (void);
void ADC (void);
sbit lcdcs=P3^0;
//-----------------------------------------------------------------------------
// Global CONSTANTS
//-----------------------------------------------------------------------------
#define BAUDRATE 115200 // Baud rate of UART in bps
#define SYSCLK 11059200 // SYSCLK frequency in Hz
#define SAMPLE_RATE 50000 // Sample frequency in Hz
#define INT_DEC 4096 // integrate and decimate ratio
sfr16 DP = 0x82; // data pointer
sfr16 TMR3RL = 0x92; // Timer3 reload value
sfr16 TMR3 = 0x94; // Timer3 counter
sfr16 ADC0 = 0xbe; // ADC0 data
sfr16 ADC0GT = 0xc4; // ADC0 greater than window
sfr16 ADC0LT = 0xc6; // ADC0 less than window
sfr16 RCAP2 = 0xca; // Timer2 capture/reload
sfr16 T2 = 0xcc; // Timer2
sfr16 DAC0 = 0xd2; // DAC0 data
sfr16 DAC1 = 0xd5; // DAC1 data
unsigned char xdata ADC1Data[4];
unsigned int xdata ad_arr[50];
unsigned char datad ,comd,kk,sdf,ppca;
unsigned char virt_port,v,b,m;
unsigned char lcd_data_count;
unsigned char *lcdpoint;
unsigned char qqq;
unsigned char data8;
unsigned int i;
unsigned int AD_MAXT;
unsigned int AD_MINT;
long AD_VAL,AD_VAL_TEST;
unsigned char YYY;
long result;
long fff;
long hhh;
int j,w,z; // temperature in hundredths of a
unsigned int fff_int, fff_frac;
unsigned char p=0,a=0,s,d,f,g=0;
//-----------------------------------------------------------------------------
// MAIN Routine
//-----------------------------------------------------------------------------
void main(void){
WDTCN = 0xde; // disable watchdog timer
WDTCN = 0xad;
SYSCLK_Init ();
PORT_Init ();
UART0_Init() ; // initialize crossbar and GPIO
SPI0_Init ();
LCD_Init() ;
delaynms(100);
Write_COM(0x00);
delaynms(100);
delaynms(100);
Write_COM(0x01);
delaynms(100);
delaynus (100);
LCD_set_xy(0X00,0);
delaynus (200);
lcd_adc();
delaynus (200);
LCD_write_string(5);
delaynms (100);
while (1)
{
delaynms (100);
ADC ();
}
}
//-----------------------------------------------------------------------------
// Initialization Subroutines
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// ADC
//-----------------------------------------------------------------------------
void ADC (void)
{
AMX0CF = 0x60; // AMUX Configuration Register
AMX0SL = 0x00; // AMUX Channel Select Register
ADC0CN = 0x00; // ADC Control Register
REF0CN = 0x03;
ADC0CN |= 0x80;
AD_VAL=0;
AD_VAL_TEST = 0;
for( YYY = 0;YYY<50;YYY++)
{
ad_arr[YYY]=0;
}
YYY=0;
ADCINT = 0;
for(YYY= 0;YYY<50;YYY++) //AD_TIMES=50
{
ADBUSY = 1;
while (!ADCINT);
ADCINT = 0;
nop_();
nop_();
nop_(); //*AD_POINTER = ADC0
ad_arr[YYY]=ADC0;
}
for(YYY=0;YYY<50;YYY++)// for(i = 0;i
{
AD_VAL_TEST += ad_arr[YYY];
}
AD_VAL = (int)(AD_VAL_TEST/50);
nop_();
nop_();
nop_();
nop_();
hhh=AD_VAL*5;
hhh=hhh*5;
hhh=hhh*100;
hhh=hhh/4096;
ADC1Data[0]=hhh/1000; //将A/D转化值存到显示数组
ADC1Data[1]=(hhh-1000*ADC1Data[0])/100;
ADC1Data[2]=(hhh-1000*ADC1Data[0]-100*ADC1Data[1])/10;
ADC1Data[3]=hhh-1000*ADC1Data[0]-100*ADC1Data[1]-10*ADC1Data[2];
delaynus (100);
LCD_set_xy(0X05,0);
delaynus (200);
for(qqq=0;qqq<4;qqq++)
{
data8=ADC1Data[qqq];
if(data8>=0x0a) data8 += 0x37;
else data8 += 0x30;
delaynms (200);
writechar(data8);
}
AD_VAL=0;
}
//-----------------------------------------------------------------------------
// PORT_Init
//-----------------------------------------------------------------------------
void PORT_Init (void)
{
XBR0 = 0x27; // XBAR0: Initial Reset Value
XBR1 = 0x00; // XBAR1: Initial Reset Value
XBR2 = 0x5c; // XBAR2: Initial Reset Value
PRT0CF = 0x14; // Output configuration for P0
PRT1CF = 0x10; // Output configuration for P3
PRT3CF = 0x01; // Output configuration for P3
}
//-----------------------------------------------------------------------------
// SYSCLK_Init
//-----------------------------------------------------------------------------
void SYSCLK_Init (void)
{
// delaynms counter
OSCXCN = 0x67; // start external oscillator with
for (i=0; i < 256; i++) ; // XTLVLD blanking interval (>1ms)
while (!(OSCXCN & 0x80)) ; // Wait for crystal osc. to settle
OSCICN = 0x88; // select external oscillator as SYSCLK
}
//-----------------------------------------------------------------------------
// SPI0_Init
//-----------------------------------------------------------------------------
void SPI0_Init (void)
{
SPI0CFG = 0x07; // data sampled on 1st SCK rising edge
SPI0CFG|=0xC0; //CKPOL =1;
SPI0CN = 0x03; // Master mode; SPI enabled; flags
SPI0CKR = SYSCLK/2/2000000-1; // SPI clock <= 8MHz (limited by
// EEPROM spec.)
}
//-----------------------------------------------------------------------------
// UART0_Init
//-----------------------------------------------------------------------------
void UART0_Init (void)
{
SCON = 0x50; // SCON: mode 1, 8-bit UART, enable RX
TMOD = 0x20; // TMOD: timer 1, mode 2, 8-bit reload
TH1 = -(SYSCLK/BAUDRATE/16); // set Timer1 reload value for baudrate
TR1 = 1; // start Timer1
CKCON |= 0x10; // Timer1 uses SYSCLK as time base
PCON |= 0x80; // SMOD = 1
TI = 1; // Indicate TX ready
}
//-----------------------------------------------------------------------------
// LCD_Init
//-----------------------------------------------------------------------------
void LCD_Init(void) //向LCD送命令
{
// unsigned int xdata x;
delaynms(100);
datad=0x00;
SendSPIByte(datad);
delaynms(10);
Write_COM(0x30);
delaynms(10);
Write_COM(0x30);
delaynms(10);
Write_COM(0x30);
delaynms(10) ;
Write_COM(0x28);
delaynms(100);
virt_port=0;
SendSPIByte(virt_port);
lcden(virt_port);
Write_COM(0x01);
delaynms(100);
Write_COM(0x06);
delaynms(10);
Write_COM(0x0C);
delaynms(500);
}
//-----------------------------------------------------------------------------
// SendSPIByte
//-----------------------------------------------------------------------------
void SendSPIByte(unsigned char ch)
{ lcdcs=1;
delaynus(100);
SPIF = 0;
SPI0DAT = ch;
while (SPIF == 0);
delaynus(100);
lcdcs=0;
delaynus(100);
nop_(); // 等待写结束
}
//-----------------------------------------------------------------------------
// lcden
//-----------------------------------------------------------------------------
void lcden(datad)
{
datad|=0x08;
SendSPIByte(datad);
datad&=0xf7;
SendSPIByte(datad);
}
//-----------------------------------------------------------------------------
// delaynms
//-----------------------------------------------------------------------------
void delaynms (unsigned int uu)
{
unsigned int oo,ll;
for (oo=0;oo {
for(ll=0;ll<1140;ll++);
}
}
//-----------------------------------------------------------------------------
// writechar
//-----------------------------------------------------------------------------
void writechar(unsigned char ua)
{
uint j;
uchar t,x;
for(j=0;j<500;j++);
datad|=0x02;
SendSPIByte(datad);
datad|=ua&0xf0;
SendSPIByte(datad);
datad|=0x08;
SendSPIByte(datad);
for(x=0;x<3;x++);
datad&=0xf7;
SendSPIByte(datad);
for(x=0;x<3;x++);
datad&=0x07;
delaynus(100);
SendSPIByte(virt_port);
t|=ua&0x0f;
datad|=t<<4;
SendSPIByte(datad);
for(x=0;x<3;x++);
datad|=0x08;
SendSPIByte(datad);
for(x=0;x<3;x++);
datad&=0xf7;
SendSPIByte(datad);
for(x=0;x<3;x++);
datad=0x00;
t=0x00;
SendSPIByte(datad);
}
//-----------------------------------------------------------------------------
// Write_COM
//-----------------------------------------------------------------------------
void Write_COM(uchar ins)
{
uchar t;
uint j;
for(j=0;j<5000;j++); //用延时代替查询
virt_port|=ins&0xf0;
SendSPIByte(virt_port);
//LCDE=1;
virt_port|=0x08;
SendSPIByte(virt_port);
for(i=3;i>0;i--);
//LCDE=0;
virt_port&=~0x08;
SendSPIByte(virt_port);
virt_port&=0x07;
SendSPIByte(virt_port);
t=ins<<4;
virt_port|=t&0xf0;
SendSPIByte(virt_port);
//LCDE=1;
virt_port|=0x08;
SendSPIByte(virt_port);
for(i=3;i>0;i--);
//LCDE=0;
virt_port&=~0x08;
SendSPIByte(virt_port);
virt_port=0;
SendSPIByte(virt_port);
}
//-----------------------------------------------------------------------------
// LCD_set_xy
//-----------------------------------------------------------------------------
void LCD_set_xy( unsigned char x, unsigned char y )
{
unsigned char address;
if (y == 0) address = 0x80 + x;
else
address = 0xc0 + x;
Write_COM(address);
}
//-----------------------------------------------------------------------------
// LCD_write_string
//-----------------------------------------------------------------------------
void LCD_write_string(unsigned char n)
{
unsigned char data1;
for(n;n>0;n--)
{
data1=*lcdpoint;
writechar(data1);
delaynms(100);
lcdpoint++;
delaynus(10);
}
}
//-----------------------------------------------------------------------------
// delaynus
//-----------------------------------------------------------------------------
void delaynus(unsigned int q) //N us延时函数
{
for (i=0;i
nop_();
}
}
//-----------------------------------------------------------------------------
// lcd_adc
//-----------------------------------------------------------------------------
void lcd_adc(void)
{
unsigned char xdata ADC0Data[5]=;
lcdpoint=&ADC0Data;
}
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