STM32F407单片机 24bit_ADC_电压采集+16bit_DAC_电压输出实验KEIL工程源码+AD7190 ADC模块+AD5689R DAC模块硬件PDF原理图
2021-09-07 18:06:37
16.91MB
STM32F407单片机24bit_ADC_AD7190称重模块+16bit_DAC_电压输出实验KEIL工程源码
int main(void)
{
uint16_t data=0xFFFF/2;
double temp,opa;
float data_temp;
int32_t weight_count;
uint8_t cali_flag=0;
/* 复位所有外设，初始化Flash接口和系统滴答定时器 */
HAL_Init();
/* 配置系统时钟 */
SystemClock_Config();
/* 初始化串口并配置串口中断优先级 */
MX_DEBUG_USART_Init();
/* 初始化LED */
LED_GPIO_Init();
KEY_GPIO_Init();
/* 初始化BEEP */
BEEP_GPIO_Init();
if(AD7190_Init()==0)
{
printf("获取不到 AD7190 !\n");
while(1)
{
HAL_Delay(1000);
if(AD7190_Init())
break;
}
}
printf("检测到 AD7190 !\n");
weight_ad7190_conf();
HAL_Delay(500);
weight_Zero_Data = weight_ad7190_ReadAvg(6);
printf("zero:%d\n",weight_Zero_Data);
printf("硬石DAC（AD5689）模块模拟量电压输出\n");
AD5689_Init();
AD5689_WriteUpdate_DACREG(DAC_A,data);
AD5689_WriteUpdate_DACREG(DAC_B,0xFFFF-data);
printf("data:%d\n",data);
opa=OPA_RES_R2/OPA_RES_R1;
while(1)
{
weight_count=weight_ad7190_ReadAvg(3);
data_temp=weight_count-weight_Zero_Data;
weight=data_temp*1000/weight_proportion;
printf("重量：%d->%.2f\n",weight_count,weight);
HAL_Delay(200);
if(KEY1_StateRead()==KEY_DOWN) // 清零
{
weight_Zero_Data = weight_ad7190_ReadAvg(6);
printf("zero:%d\n",weight_Zero_Data);
cali_flag=1;
}
if(KEY2_StateRead()==KEY_DOWN) // 校准：必须先按“清零”键，然后把20g砝码放在称上，按下校准键
{
if(cali_flag)
{
weight_count = weight_ad7190_ReadAvg(6);
weight_proportion=(weight_count-weight_Zero_Data)*1000/100;
printf("weight_proportion:%d\n",weight_proportion);
}
cali_flag=0;
}
if(KEY3_StateRead()==KEY_DOWN)
{
if(data>(0xFFFF-1000))
data=(0xFFFF-1000);
data +=1000;
AD5689_WriteUpdate_DACREG(DAC_A,data);
AD5689_WriteUpdate_DACREG(DAC_B,0xFFFF-data);
temp=(double)(data*2-0xFFFF)*2500*opa/0xFFFF;
//temp为目标电源值，这里先放大1000倍（方便计算而已），等后面显示再还原
//data是数字量DA值，当data取值
2021-09-07 18:06:35
24.88MB
AD7190 ADC模块PDF原理图+AD集成封装库,集成封装库列表：
Library Component Count : 19
Name Description
----------------------------------------------------------------------------------------------------
AD7190 AD7190
BAS70-04LT1 70V,70mA,VF=0.41V@1mA
Cap Capacitor
Cap Pol Polarized Capacitor (Radial)
DIODE Diode
DIODE SCHOTTKY Schottky Diode
HOLE
Header 8 Header, 8-Pin
Inductance2 Inductance
Inductance_1
LED
PR9
LMV331 General-purpose Low-voltage Comparators
MCP6024
REF3xxx REF3xxx
Res1 Resistor
TPS6040x UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER
TPS61040 DC-DC Boost Converter
XTAL_2Pin Crystal Oscillator
2021-09-07 14:07:45
547KB
CS5530的程序，我使用的是外部中断函数中读取的AD值数据，中英文数据手册百度文库就有，我也不上传了。给驱动有问题的朋友一个参考。
2021-09-07 14:07:06
3KB
1
STM32F407IGT6单片机ADC实验+DAC实验例程7个合集KEIL工程源码+文档说明:
ADC-单通道采集.rar
ADC-单通道采集（DMA）.rar
ADC-双ADC慢速交叉模式.rar
ADC-多通道采集（DMA）.rar
ADC-芯片温度读取.rar
DAC-可调电压输出.rar
DAC-正弦波.rar
2021-09-07 13:03:23
40.79MB
时间交替ADC系统通过几片低速的ADC芯片进行并行交替采样，可以成倍地提高系统的采样频率，同时保持较高的分辨率[1]。但是由于芯片及具体实现过程中一些实际因素的影响，不可避免地会引入通道失配误差[2]。本文利用两片ADC芯片及外围电路来实现时间交替ADC系统，并通过Matlab软件对采样数据进行通道失配误差的估计和校正。Matlab仿真结果表明，该系统的采样率基本上达到了单片ADC的两倍，同时其通道失配误差通过算法校正后得到了有效地消除。
2021-09-07 10:16:53
3.7MB
1