基于8051F350的AD转换显示存储程序

1、#include #include #include /-/ 16-bit SFR Definitions for F35x/-/*需求：1、AD转换，24位精度：AIN0.0 2、四个按键：K1=P14，K2=P15，K3=P16，K=P17 3、1602液晶屏显示AD值：LCD1602_RS=P06，LCD1602_EN=P07，DB4 = P10， DB0=DB5 = P11，DB6 = P12，DB7 = P13 4、存储（24C02）：SDA=P00，SCL=P01函数：1、void main(void) /主函数 while(1) /连续不间断地得到AD值 ADZ = （AD值）;

2、 2、void KeyScan(void) if(K1=0) K1OK=1; 3、void T2_ISR(void) interrupt 5 /定时器，定时扫描按键，当有按键按下时，显示ADZ TF2H = 0; KeyScan(); if(K1OK=1) K1OK=0; /LCD1602第一行显示字母“ADZ”，第二行显示数字ADZ，24C02存储此值*/*1602高四位LCD1602_RS=P06，LCD1602_EN=P07，DB4 = P10， DB5 = P11，DB6 = P12，DB7 = P13 AD转换，24位精度：AIN0.0 ,Verf+接100K可调电阻测试,满量程25

3、00mv四个按键：K1=P14，K2=P15，K3=P16，K=P17存储（24C02）：SDA=P00，SCL=P01 （和T2扫描按键有冲突，应该实时存储）*/Routinessfr16 ADC0DEC = 0x9A; / ADC0 Decimation Ratio Registersfr16 TMR3RL = 0x92; / Timer3 reload registerssfr16 TMR3 = 0x94; / Timer3 counter registerssfr16 TMR2RL = 0xCA; / Timer2 Reload Registersfr16 TMR2 = 0xCC; /

4、 Timer2 Registersbit SDA = P00; / SMBus on P0.0sbit SCL = P01; / and P0.1sbit K1=P14;/四个按键sbit K2=P15;sbit K3=P16;sbit K4=P17;/-/ Global CONSTANTS/-/-#define SYSCLK / SYSCLK frequency in Hz#define MDCLK / Modulator clock in Hz (ideal is / (2.4576 MHz)#define OWR 20 / Desired Output Word Rate in Hz A

5、DC0输出字速率,最大960#define BAUDRATE / Baud rate of UART in bps /-#define SMB_FREQUENCY 50000 / Target SCL clock rate / This example supports between 10kHz / and 100kHz#define WRITE 0x00 / SMBus WRITE command#define READ 0x01 / SMBus READ command#define EEPROM_ADDR 0xA0 / Device address for slave target /

6、 Note: This address is specified / in the Microchip 24LC02B / datasheet./ SMBus Buffer Size#define SMB_BUFF_SIZE 0x08 / Defines the maximum number of bytes / that can be sent or received in a / single transfer/ Status vector - top 4 bits only#define SMB_MTSTA 0xE0 / (MT) start transmitted#define SMB

7、_MTDB 0xC0 / (MT) data byte transmitted#define SMB_MRDB 0x80 / (MR) data byte received /- /-定时器2常量#define TOGGLE_RATE 1000 /每50ms检测按键1次#define TIMER_TICKS_PER_MS SYSCLK/8/1000 /定时器每ms触发扫描次#define AUX1 TIMER_TICKS_PER_MS*TOGGLE_RATE#define AUX2 -AUX1#define TIMER2_RELOAD AUX2 / Reload value for Timer

8、2 /-#define uchar unsigned char#define uint unsigned int/- -sbit lcdrs=P06; /数据/命令选择端，低电平为指令，高电平为数? sbit lcden=P07; /- uchar D1,D2,D3,D4,D5,D6,D7,D8;uchar* pSMB_DATA_IN; / Global pointer for SMBus data / All receive data is written hereuchar SMB_SINGLEBYTE_OUT; / Global holder for single byte writes

9、.uchar* pSMB_DATA_OUT; / Global pointer for SMBus data. / All transmit data is read from hereuchar SMB_DATA_LEN; / Global holder for number of bytes / to send or receive in the current / SMBus transfer.uchar WORD_ADDR; / Global holder for the EEPROM word / address that will be accessed in / the next

10、 transferuchar TARGET; / Target SMBus slave addressbit SMB_BUSY = 0; / Software flag to indicate when the / EEPROM_ByteRead() or / EEPROM_ByteWrite() / functions have claimed the SMBusbit SMB_RW; / Software flag to indicate the / direction of the current transferbit SMB_SENDWORDADDR; / When set, thi

11、s flag causes the ISR / to send the 8-bit / after sending the slave address.bit SMB_RANDOMREAD; / When set, this flag causes the ISR / to send a START signal after sending / the word address. / For the 24LC02B EEPROM, a random read / (a read from a particular address in / memory) starts as a write t

12、hen / changes to a read after the repeated / start is sent. The ISR handles this / switchover if the / bit is set.bit SMB_ACKPOLL; / When set, this flag causes the ISR / to send a repeated START until the / slave has acknowledged its address static uchar K1OK,K2OK,K3OK,K4OK;static uchar ge,shi,bai,q

13、ian; static unsigned long ADC_OutputVal; /得到的份数 static unsigned long accumulator = 0;/ADC累积测量N次值的和static uint measurements = 0; / ADC测量的次数static unsigned long result=0;uint i,k;uchar num;uchar code table1= ADZ: ;uchar code table2=test data.;/-/ Function PROTOTYPES/-void Oscillator_Init (void);void P

14、ort_Init (void);void UART0_Init (void);void ADC0_Init(void);void delay(uint x);void Lcd_1602_init();void Lcd_1602_write(uchar com,date);void Lcd_1602_write1();void SMBus_Init(void);void Timer0_Init(void);void Timer3_Init(void);void SMBus_ISR(void);void Timer2_Init(void);void KeyScan();void Timer3_IS

15、R(void);void EEPROM_ByteWrite(unsigned char addr, unsigned char dat);void EEPROM_WriteArray(unsigned char dest_addr, unsigned char* src_addr, unsigned char len);unsigned char EEPROM_ByteRead(unsigned char addr);void EEPROM_ReadArray(unsigned char* dest_addr, unsigned char src_addr, unsigned char len

16、);/-/ MAIN Routine/-void main (void)char in_buff11 = 0; PCA0MD &= 0x40; / WDTE = 0 (clear watchdog timer / enable) Oscillator_Init(); / Initialize system clock while(!SDA) / Provide clock pulses to allow the slave to advance out / of its current state. This will allow it to release SDA. XBR1 = 0x40;

17、 / Enable Crossbar SCL = 0; / Drive the clock low for(i = 0; i 255; i+); / Hold the clock low SCL = 1; / Release the clock while(!SCL); / Wait for open-drain / clock output to rise for(i = 0; i 10; i+); / Hold the clock high XBR1 = 0x00; / Disable Crossbar Port_Init(); / Initialize Crossbar and GPIO

18、 / UART0_Init(); / Initialize UART0 for printfs Lcd_1602_init(); ADC0_Init(); / Initialize ADC0 AD0INT = 0; ADC0MD = 0x83; / Start continuous conversions Timer0_Init (); / Configure Timer0 for use as SMBus Timer2_Init (); / clock source Timer3_Init (); / Configure Timer3 for use with SMBus / low tim

19、eout detect SMBus_Init (); / Configure and enable SMBus EIE1 |= 0x01; / Enable the SMBus interruptEA = 1; / Enable global interrupts/加入按键测试-/*EEPROM_WriteArray(0x50, table2, sizeof(table2);EEPROM_ReadArray(in_buff, 0x50, sizeof(in_buff);while(K1=0)void Lcd_1602_init();delay(3);for(i=0;isizeof(in_buf

20、f);i+) Lcd_1602_write(1,in_buffi);delay(3); /- */ while (1) / Spin forever /-/ Initialization Subroutines/-/- -/1602程序部分void Lcd_1602_init() Lcd_1602_write(0,0x28); /0x28=0010 1000，将液晶设置为16*2显示，5*7点阵，4位数据口 delay(5); / lcden=1; / lcden=0; Lcd_1602_write(0,0x28); /显示方式设置 Lcd_1602_write(0,0x0e); /设置开显示

21、，不显示光标 Lcd_1602_write(0,0x06); /默认(0x06)写入新数据后光标右移 屏幕不移动 Lcd_1602_write(0,0x01); /显示清0，数据指针清0 void Lcd_1602_write(uchar com,date) uchar i; uchar temp; lcdrs=com; /将形参传给lcdrs for(i=0;i4); /将date的 高四位送入P1第四位，同时保持P1的高 四位不变 /如果使用P1的低四位的话，则该处应该改为：P1=(P1&0xf0)|(date4)&0x0f); delay(3); /适当延时，数据稳定 lcden=0;

22、/送入数据 date=4; /低四位左移到高四位 void Lcd_1602_write1(uchar com,date) uchar i; uchar temp; lcdrs=com; /将形参传给lcdrs for(i=0;i4); /将date的 高四位送入P1第四位，同时保持P1的高 四位不变 /如果使用P1的低四位的话，则该处应该改为：P1=(P1&0xf0)|(date4)&0x0f); delay(3); /适当延时，数据稳定 lcden=0; /送入数据 date0;i-) for(j=110;j0;j-);/-void Oscillator_Init (void) OSCIC

23、N = 0x83; / 配置内部振荡器 ,不分频 RSTSRC = 0x04; / Enable missing clock detector/-/ Port_Init/-/ Return Value : None/ Parameters : None/ThisfunctioninitializestheGPIO and the Crossbar 初始化GPI0和交叉开关/ Pinout:/ P0.4 - UART TX (digital, push-pull) / P0.5 - UART RX (digital, open-drain)/ AIN0.2 - ADC0 input/-void

24、Port_Init (void)XBR1 = 0x40; /弱上拉使能，交叉开关使能。 P0MDOUT |= 0xC0; / P0.6 P0.7 pins push-pull output LCD控制信号P0MDOUT &= 0xFC; /P0.1 P0.2 置0，开漏。 SMBus时钟和数据位P1MDOUT &= 0xF0; /P1低四位开漏,液晶驱动位P1MDOUT |= 0x20; /P1.5 推挽输出/P1MDIN &=0X0F; /P1高四位配置为模拟输入P1SKIP &= 0x00; /p1不被交叉开关跳过XBR0 = 0x04; / Enable SMBus pins/串口还没配

25、置/-void SMBus_Init (void) /SMB0CF = 0x40; / Use Timer0 overflows as SMBus clock SMB0CF=0x5C; / source; / Disable slave mode; / Enable setup & hold time extensions; / Enable SMBus Free timeout detect; / Enable SCL low timeout detect; SMB0CF |= 0x80; / Enable SMBus;void Timer0_Init (void)/ Make sure t

26、he Timer can produce the appropriate frequency in 8-bit mode/ Supported SMBus Frequencies range from 10kHz to 100kHz. The CKCON register/ settings may need to change for frequencies outside this range.#if (SYSCLK/SMB_FREQUENCY/3) 255) #define SCALE 1 CKCON |= 0x04; / Timer0 clock source = SYSCLK#eli

27、f (SYSCLK/SMB_FREQUENCY/4/3) 255) #define SCALE 4 CKCON |= 0x01; CKCON &= 0x06; / Timer0 clock source = SYSCLK / 4#endif TMOD = 0x02; / Timer0 in 8-bit auto-reload mode !注意综合设置 TH0 = -(SYSCLK/SMB_FREQUENCY/12/3); / Timer0 configured to overflow at 1/3 / the rate defined by SMB_FREQUENCY TL0 = TH0; /

28、 Init Timer0 TR0 = 1; / Timer0 enabledvoid Timer2_Init(void) CKCON &= 0x60; / TMR2CN &= 0x01; TMR2CN = 0x00; / TMR2RL = -(SYSCLK/2/40); / Reload value to be used in Timer2 50ms TMR2RL = TIMER2_RELOAD; TMR2 = TMR2RL; / Init the Timer2 register TMR2CN = 0x04; / Enable Timer2 in auto-reload mode ET2 =

29、1; / Timer2 interrupt enabledvoid Timer3_Init (void) TMR3CN = 0x00; / Timer3 configured for 16-bit auto- / reload, low-byte interrupt disabled CKCON &= 0x40; / Timer3 uses SYSCLK/12 TMR3RL = -(SYSCLK/12/40); / Timer3 configured to overflow after TMR3 = TMR3RL; / 25ms (for SMBus low timeout detect) E

30、IE1 |= 0x80; / Timer3 interrupt enable TMR3CN |= 0x04; / Start Timer3/-/ UART0_Init/-/ Return Value : None/ Parameters : None/ Configure the UART0 using Timer1, for and 8-N-1./-/-/ ADC0_Init/-/ Return Value : None/ Parameters : None/ Initialize the ADC to use the temperature sensor. (non-differentia

31、l)/-void KeyScan() Lcd_1602_write1(0,0x80); delay(3); Lcd_1602_write1(1,t);delay(3);Lcd_1602_write1(1,e);delay(3);Lcd_1602_write1(1,s);delay(3);Lcd_1602_write1(1,t);delay(3); if(K1 = 0) delay(10);if(K1=0)/ 有效按键K1OK=1;/while(!K1); /松开，连续检测会有问题 void Timer2_ISR (void) interrupt 5 TF2H = 0; / Reset Interrupt KeyScan(); / K1OK=1; if(K1OK=1) K1OK=0; for(num=0;num8;num+) Lcd_1602_write1(1,table1num); delay(3); Lcd_1602_write1(0,0xC0);