ADS131A02: 读写寄存器均正常，但是读出数据为0

您好，

datasheet Figure 106. ADS131A0x Configuration Sequence 有初始化流程，您是按照Figure 106配置启动的AD转换吗？

DRDY一直高 不知道是不是 因为没有启动AD转换？您是怎样启动AD转换的？

您好，非常感谢您的回答，我把启动代码贴在下面。初始化流程是按照流程图和参考例程过来的。

void adcStartup(void) {
    HAL_Delay(100);

    HAL_GPIO_WritePin(GPIOC, GPIO_PIN_8, GPIO_PIN_SET);

    restoreRegisterDefaults();

    // Always send a NULL command before sending a new command
    HAL_Delay(5);

    sendCommand(OPCODE_NULL);

    uint16_t response = sendCommand(OPCODE_NULL);
    if (response != 0xFF02) {
        assert(0);
    }
    printf("response: %x\n", response);

    unlockRegisters();

    uint8_t regVal = D_SYS_CFG_DEFAULT;
#ifdef SET_FIXED
    regVal |= D_SYS_CFG_FIXED_MASK;
#endif

#ifdef SET_CRC_EN
    regVal |= D_SYS_CFG_CRC_EN_MASK;    // Set CRC_EN bit
#endif

#ifdef SET_CRC_MODE
    regVal |= D_SYS_CFG_CRC_MODE_MASK;  // Set CRC_MODE bit
#endif
    // Write to D_SYS_CFG_ADDRESS
    writeSingleRegister(D_SYS_CFG_ADDRESS, regVal);

    // Write to A_SYS_CFG_ADDRESS
    writeSingleRegister(A_SYS_CFG_ADDRESS, 0x68);

    // Config data rate
    writeSingleRegister(CLK1_ADDRESS, CLK1_CLK_DIV_8);
    writeSingleRegister(CLK2_ADDRESS, CLK2_ICLK_DIV_8 | CLK2_OSR_400);

    // Enable all ADC channels
    writeSingleRegister(ADC_ENA_ADDRESS, ADC_ENA_ENA_ALL_CH_PWUP); // 0x0F

    /* (REQUIRED) Always send a NULL command first to establish SPI communication */
    sendCommand(OPCODE_WAKEUP); // 0x0033

    lockRegisters();

    // Ignore the first 3-4 conversion results to allow for the
    // output buffers to fill-up and the SINC3 filter to settle
    uint8_t ignore_counter = 4;
    AdcDataStruct dummy_data;
    while (ignore_counter > 0) {
        readData(&dummy_data);
        ignore_counter--;
    }
}

我在wakeup命令中验证：

sendCommand(OPCODE_NULL);
sendCommand(OPCODE_WAKEUP); // 0x0033
response = sendCommand(OPCODE_NULL);
printf("ADS131 OPCODE_WAKEUP,response: %x\n", response);
经过验证，发现response确实为0x0033，但是没有启动转换，这是什么原因呢