package from < a href =" https://blog.csdn.net/hihell" target="_blank"> The dream eraser Storm group based on the GPT "secret"
ADS1148 is a 16-bit precision analog-to-digital converter, mainly used in the measurement and processing of analog signals such as voltage, current and temperature.
In view of the problem you mentioned, if the CS pin of ADS1148 cannot be connected out, it may not be possible to control the state of CS through software, thus the reliability of SPI communication cannot be guaranteed. Here are some possible causes and solutions:
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Power supply noise: ADS1148 is very sensitive to power supply noise. If the power supply is noisy, the communication data may be unstable. The solution is to use a low noise power supply or add a noise reduction capacitor to the power supply pin.
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Clock stability: Clock stability of SPI communication has a great impact on data reliability. If the clock signal is not stable, the communication data may be unstable. The solution is to use a stable clock source such as a crystal oscillator.
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Data line interference: SPI communication requires multiple data lines to transmit data. If these data lines are interfered, the communication data may be unstable. The solution is to use a shielded cable or add a filter capacitor to the data cable pin.
