你能给我以stm32f4zet6使用ads1256的例程吗

当然可以！这里是一个使用STM32F4ZET6控制ADS1256的简单例程：

#include "stm32f4xx.h"
#include "stm32f4xx_gpio.h"
#include "stm32f4xx_spi.h"

#define CS_PIN GPIO_Pin_0
#define CS_PORT GPIOB
#define DRDY_PIN GPIO_Pin_1
#define DRDY_PORT GPIOB

void SPI_Configuration(void)
{
    SPI_InitTypeDef SPI_InitStructure;
    GPIO_InitTypeDef GPIO_InitStructure;

    // 使能SPI时钟和GPIO时钟
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);

    // 配置SPI引脚
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

    // 连接SPI引脚到SPI功能
    GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_SPI2);
    GPIO_PinAFConfig(GPIOB, GPIO_PinSource14, GPIO_AF_SPI2);
    GPIO_PinAFConfig(GPIOB, GPIO_PinSource15, GPIO_AF_SPI2);

    // 配置SPI参数
    SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
    SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
    SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
    SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
    SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
    SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
    SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256;
    SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
    SPI_InitStructure.SPI_CRCPolynomial = 7;
    SPI_Init(SPI2, &SPI_InitStructure);

    // 使能SPI
    SPI_Cmd(SPI2, ENABLE);
}

void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    // 配置CS引脚
    GPIO_InitStructure.GPIO_Pin = CS_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
    GPIO_Init(CS_PORT, &GPIO_InitStructure);

    // 配置DRDY引脚
    GPIO_InitStructure.GPIO_Pin = DRDY_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_Init(DRDY_PORT, &GPIO_InitStructure);
}

void ADS1256_Init(void)
{
    // 初始化SPI和GPIO
    SPI_Configuration();
    GPIO_Configuration();

    //*************自校准****************
    while(GPIO_ReadInputDataBit(DRDY_PORT, DRDY_PIN));
    GPIO_ResetBits(CS_PORT, CS_PIN);
    SPI_I2S_SendData(SPI2, 0xF0);
    while(GPIO_ReadInputDataBit(DRDY_PORT, DRDY_PIN));
    GPIO_SetBits(CS_PORT, CS_PIN);
    //**********************************

    //*************配置寄存器****************
    // 高位在前、校准、使用缓冲
    ADS1256_WriteReg(0x03, 0x06);
    // 放大倍数1
    ADS1256_WriteReg(0x02, 0x01);
    // 数据5sps
    ADS1256_WriteReg(0x03, 0xE0);
    //**********************************

    //*************自校准****************
    while(GPIO_ReadInputDataBit(DRDY_PORT, DRDY_PIN));
    GPIO_ResetBits(CS_PORT, CS_PIN);
    SPI_I2S_SendData(SPI2, 0xF0);
    while(GPIO_ReadInputDataBit(DRDY_PORT, DRDY_PIN));
    GPIO_SetBits(CS_PORT, CS_PIN);
    //**********************************
}

void ADS1256_WriteReg(uint8_t reg, uint8_t value)
{
    while(GPIO_ReadInputDataBit(DRDY_PORT, DRDY_PIN));
    GPIO_ResetBits(CS_PORT, CS_PIN);
    SPI_I2S_SendData(SPI2, reg | 0x50);
    while(GPIO_ReadInputDataBit(DRDY_PORT, DRDY_PIN));
    SPI_I2S_SendData(SPI2, 0x00);
    while(GPIO_ReadInputDataBit(DRDY_PORT, DRDY_PIN));
    SPI_I2S_SendData(SPI2, value);
    while(GPIO_ReadInputDataBit(DRDY_PORT, DRDY_PIN));
    GPIO_SetBits(CS_PORT, CS_PIN);
}

int main(void)
{
    // 初始化ADS1256
    ADS1256_Init();

    while(1)
    {
        // 读取ADS1256的数据
        while(GPIO_ReadInputDataBit(DRDY_PORT, DRDY_PIN));
        GPIO_ResetBits(CS_PORT, CS_PIN);
        SPI_I2S_SendData(SPI2, 0x01);
        while(GPIO_ReadInputDataBit(DRDY_PORT, DRDY_PIN));
        SPI_I2S_SendData(SPI2, 0x00);
        while(GPIO_ReadInputDataBit(DRDY_PORT, DRDY_PIN));
        uint8_t data = SPI_I2S_ReceiveData(SPI2);
        while(GPIO_ReadInputDataBit(DRDY_PORT, DRDY_PIN));
        GPIO_SetBits(CS_PORT, CS_PIN);

        // 处理数据
        // ...

        // 延时一段时间
        // ...
    }
}

请确保根据你的硬件连接情况，修改引脚宏定义，以适应你的实际硬件连接。同时，也请根据ADS1256的技术手册和参考手册，根据你的应用需求进行相应的配置和修改。