片外ADC驱动程序

dxl · 发表于 2019-1-25 09:13:34

写了一个驱动TLV1544的ADC驱动程序，但在主函数中调用TLV1544.c函数时，没有采集到输入的电压值，TLV1544.c函数如下，有大佬能看下是不是写的有啥不对的吗，非常感谢

#include "TLV1544.h"
#include "usart.h"
#include "delay.h"

void TLV1544_GPIO_Init(void)
{

GPIO_InitTypeDef  GPIO_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);//ê1ÄüGPIOAê±Öó

  //Ïè3õê¼»ˉADC1í¨μà5 IO¿ú
  GPIO_InitStructure.GPIO_Pin = CS;//PA4
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;//Ä￡Äaêä3ö
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = SCLK;//PA5
GPIO_Init(GPIOA, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = DIN;//PA6
GPIO_Init(GPIOA, &GPIO_InitStructure);

// GPIO_InitStructure.GPIO_Pin = DRDY;//PA5
// GPIO_Init(GPIOA, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = DOUT;//PA7
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;//Ä￡Äaêäèë
GPIO_Init(GPIOA, &GPIO_InitStructure);

}

int set_TLV1544_mode(u16 channel)//éèÖÃTLV1544×a»»Ä￡ê½
{
u16 i;
// uint8_t bit;
channel=channel<<4;
TLV1544_CS_L();  //0
delay_ms(5);
TLV1544_SCLK_L();  //0
delay_ms(5);

for(i=0;i<10;i++)
{
if(channel&0x80)
{
TLV1544_DIN_L();
}
else
TLV1544_DIN_H();
__NOP();

TLV1544_SCLK_L();
TLV1544_SCLK_H();
channel=channel<<1;
}
TLV1544_CS_H();
}

int TLV1544_tra(void) // ADC3õê¼»ˉoˉêy￡¬êy¾YÎa10Î»
{
u16 x=0,i;
int adc_value=0;
set_TLV1544_mode(1);//éèÖÃTLV1544×a»»Ä￡ê½
delay_ms(60);

TLV1544_CS_L();
__NOP();
__NOP();    //3õê¼»ˉÆ¬Ñ¡
TLV1544_SCLK_L();//ê±Öóà-μí
__NOP();
__NOP();

for(i=0;i<10;i++)
{
TLV1544_SCLK_H();
   __NOP();
x=GPIO_ReadInputDataBit(GPIOA,DOUT);

adc_value|=x;
adc_value<<=1;

TLV1544_SCLK_L();
__NOP();
   __NOP();

}
// adc_value>>=1;
TLV1544_CS_H();    //1

if(adc_value >= 512)
adc_value=0;
//printf("---%d---\n",adc_value);
return  adc_value;
}

dxl · 发表于 2019-1-25 09:16:53

主函数如下

dxl · 发表于 2019-1-25 09:17:19

dxl 发表于 2019-1-25 09:16
主函数如下

#include "stm32f4xx.h"
#include "usart.h"
#include "delay.h"
#include "led.h"
#include "lcd.h"
#include "TLV1544.h"
#include "adc.h"

//ALIENTEK ì½Ë÷ÕßSTM32F407¿a·￠°å êμÑé0
//STM32F41¤3ìÄ￡°å-¿aoˉêy°æ±¾
//¼¼êõÖ§3Ö￡owww.openedv.com
//ìÔ±|μêÆì￡ohttp://eboard.taobao.com
//1ãÖYêDDÇòíμç×ó¿Æ¼¼óDÏT1«Ë¾
//×÷Õß￡oÕyμãÔ-×ó @ALIENTEK

int main(void)
{
u16 ad_value=0;
float temp;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//éèÖÃÏμí3ÖD¶ÏóÅÏè¼¶·Ö×é2
delay_init(168); //3õê¼»ˉÑóê±oˉêy
uart_init(115200); //3õê¼»ˉ′®¿ú2¨ìØÂêÎa115200
LED_Init(); //3õê¼»ˉLED
LCD_Init();       //3õê¼»ˉLCD½ó¿ú
TLV1544_GPIO_Init();//′®¿ú3õê¼»ˉ
TLV1544_tra();  // TLV1544×a»»oˉêy
set_TLV1544_mode(1);
Adc_Init();       //3õê¼»ˉADC

POINT_COLOR=RED; //»-±êÑÕé«
LCD_ShowString(30,50,200,16,16,"Explorer STM32F4"); //·Ö±e¶Ôó|xyÆeμã×ø±ê￡¬¿í¶è￡¬¸ß¶è￡¬×Öìå′óD¡￡¬ÏÔê¾μÄÖμ
LCD_ShowString(30,70,200,16,16,"aaaa");
LCD_ShowString(30,110,200,16,16,"9406");

LCD_ShowString(30,130,200,16,16,"ADC1_CH5_VAL:");
LCD_ShowString(30,150,200,16,16,"ADC1_CH5_VOL:0.000V"); //ÏèÔú1ì¶¨Î»ÖÃÏÔê
while(1)
{
set_TLV1544_mode(1);
ad_value=TLV1544_tra();
// ad_value=2;
LCD_ShowxNum(134,130,ad_value,4,16,0); //ÏÔê¾ADCC2éÑùoóμÄÔ-ê¼Öμ  xy×ø±ê￡¬êyÖμ￡¬3¤¶è￡¬×Öìå′óD¡￡¬Ä￡ê½
temp=(float)ad_value*3300/1024;
ad_value=temp;                         //¸3ÖμÕûêy2¿·Ö¸øadcx±äá¿￡¬òòÎaadcxÎau16ÕûDÎ
LCD_ShowxNum(134,150,ad_value,1,16,0); //ÏÔê¾μçÑ1ÖμμÄÕûêy2¿·Ö￡¬3.1111μÄ»°￡¬Õaàï¾íêÇÏÔê¾3
temp-=ad_value;                         //°ÑòÑ¾-ÏÔê¾μÄÕûêy2¿·Öè￥μô￡¬áôÏÂD¡êy2¿·Ö￡¬±èèç3.1111-3=0.1111
temp*=1000;                         //D¡êy2¿·Ö3ËòÔ1000￡¬àyèç￡o0.1111¾í×a»»Îa111.1￡¬Ïàμ±óú±￡áôèyÎ»D¡êy¡￡
LCD_ShowxNum(150,150,temp,3,16,0X80); //ÏÔê¾D¡êy2¿·Ö￡¨Ç°Ãæ×a»»ÎaáËÕûDÎÏÔê¾￡©￡¬ÕaàïÏÔê¾μÄ¾íêÇ111.
LED0=!LED0;
delay_ms(250);
LED1=!LED1;
delay_ms(500);

// ad_valu=9.5*ad_v;
// LCD_ShowString(30,50,200,16,16,ad_v);
}

}