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標題:
12年北京市電子設(shè)計大賽的考題，最近重做了一下 msp430源碼分享
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作者:
likeyou1997an
時間:
2018-5-11 16:56
標題:
12年北京市電子設(shè)計大賽的考題，最近重做了一下 msp430源碼分享
12年北京市電子設(shè)計大賽的考題，最近重做了一下
單片機源程序如下:
/*5月9日
*
*
* */
#include <msp430.h>
#include "DAC7811.h"
#include "TA_PWM.h"
#include "oled.h"
#include <stdio.h>
void CSL_init(void);
void GPIO_graceInit(void);
void BCSplus_graceInit(void);
void USCI_B0_graceInit(void);
void ADC10_graceInit();
/*
* main.c
*/
int main(void)
{
unsigned int max = 0, min = 8192;
long Vpp=0;
int gain;
WDTCTL = WDTPW | WDTHOLD; // Stop watchdog timer
_disable_interrupts();
CSL_init();
ADC10_graceInit();
TA0_PWM_Init('A',1,'F',0);
TA0_PWM_SetPeriod(30);
_enable_interrupts();
int j,i;
long temp;
char s[16];
ADC10CTL0 |= ADC10SC;
OLED_Init();
OLED_Clear();
OLED_ShowString(0,0,"Gain:");
OLED_ShowString(0,2,"Vpp :");
while(1)
{
TA0_PWM_SetPermill(1,500); //PWM波輸出，vpp不能超過100mv
sprintf(s,"%d ",max);
OLED_ShowString(0,6,s);
for(j=0;j<500;j++)
{
ADC10CTL0 |= ADC10SC+ENC;
while ((ADC10CTL0 & ADC10IFG) == 0);
temp=ADC10MEM;
if(temp > max)
max = temp;
if(temp < min)
min = temp;
}
Vpp=(max-min);
for(i=0;i<4;i++) OLED_ShowString(40,i*2," ");
sprintf(s,"%dV",Vpp);
OLED_ShowString(40,2,s);
Vpp=Vpp*3550/1023; // 測量電壓
sprintf(s,"%dV",Vpp);
OLED_ShowString(0,4,s);
Vpp=Vpp/20;
sprintf(s,"%dV",Vpp);
OLED_ShowString(70,4,s);
TA0_PWM_SetPermill(1,Vpp*10); //PWM波輸出，vpp不能超過100mv
if (Vpp<40)
{
spiwrite(41,1);
gain=100;
}
else if (Vpp<70)
{
spiwrite(129,1);
gain = 35;
}
else if (Vpp<100)
{
spiwrite(73,1);
gain=30;
}
sprintf(s,"%d ",max);
OLED_ShowString(0,6,s);
sprintf(s,"%d ",min);
OLED_ShowString(80,6,s);
sprintf(s,"%d dB",gain);
OLED_ShowString(40,0,s);
max=0;
min=8192;
__delay_cycles(30000000);
}
}
/*
* 系統(tǒng)初始化集中調(diào)用函數(shù)
*/
void CSL_init(void)
{
GPIO_graceInit(); //IO口初始化
BCSplus_graceInit(); //時鐘源初始化
USCI_B0_graceInit(); //USCI_B初始化-3線SPI
//ADC初始化 P1.3輸入
}
/*
* IO口初始化
*/
void GPIO_graceInit(void)
{
//-----設(shè)定P1.0和P1.6的輸出初始值-----
P1DIR |= BIT0; //設(shè)定P1.0為輸出
P1OUT |= BIT0; //設(shè)定P1.0初值（初始化完成后兩燈均亮）
//-----配合機械按鍵，啟用內(nèi)部上拉電阻-----
P1REN |= BIT3; //啟用P1.3內(nèi)部上下拉電阻
P1OUT |= BIT3; //將電阻設(shè)置為上拉
//-----配置P1.3中斷參數(shù)-----
P1DIR &= ~BIT3; // P1.3設(shè)為輸入(可省略)
P1IES |= BIT3; // P1.3設(shè)為下降沿中斷
P1IE |= BIT3 ; // 允許P1.3中斷
/* Port 1 Port Select 2 Register */
P1SEL2 = BIT5 | BIT7;
/* Port 1 Port Select Register */
P1SEL = BIT5 | BIT7;
/* Port 2 Output Register */
P2OUT = BIT0 | BIT1 | BIT2| BIT3 | BIT4 | BIT5;
/* Port 2 Direction Register */
P2DIR = BIT0 | BIT1 | BIT2| BIT3 | BIT4 | BIT5;
}
/*
* 設(shè)定主時鐘為16MHz，低速時鐘為外部手表晶振
*/
void BCSplus_graceInit(void)
{
BCSCTL2 = SELM_0 | DIVM_0 | DIVS_0;
if (CALBC1_16MHZ != 0xFF) {
/* Adjust this accordingly to your VCC rise time */
__delay_cycles(10000);
DCOCTL = 0x00;
BCSCTL1 = CALBC1_16MHZ; /* Set DCO to 16MHz */
DCOCTL = CALDCO_16MHZ;
}
BCSCTL1 |= XT2OFF | DIVA_0;
BCSCTL3 = XT2S_0 | LFXT1S_0 | XCAP_1;
}
/*
* 通用串行通信口設(shè)置為3線SPI模式，P1.5-SCL/P1.7-SDL
*/
void USCI_B0_graceInit(void)
{
/* Disable USCI */
UCB0CTL1 |= UCSWRST;
UCB0CTL0 = UCCKPL |UCMSB | UCMST | UCMODE_0 | UCSYNC;
UCB0CTL1 = UCSSEL_2 | UCSWRST;
/* Bit Rate Control Register 0 */
UCB0BR0 = 32;
/* Enable USCI */
UCB0CTL1 &= ~UCSWRST;
}
void ADC10_graceInit(void)
{ //p1.2輸入，基準電壓為3.55v
// ADC10CTL0 &= ~ENC;
// ADC10CTL0 = ADC10IE | ADC10ON | ADC10SHT_3 | SREF_0;
// ADC10CTL1 = CONSEQ_0 | ADC10SSEL_0 | ADC10DIV_0 | SHS_0 | INCH_2;
// __delay_cycles(30000);
// ADC10CTL0 |= ENC;
ADC10CTL0 &= ~ENC;
ADC10CTL0 =ADC10ON + REFON + ADC10SHT_3 + SREF_0;
ADC10CTL1 = CONSEQ_0 + ADC10SSEL_0 + ADC10DIV_3 + SHS_0 + INCH_3;
ADC10AE0 = 0x8;
__delay_cycles(30000);
ADC10CTL0 |= ENC;
}
復(fù)制代碼
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lian5.9.zip
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