BQ76952: SPI通信，片选CS信号能否一致保持低电平。 spi communicate , is the cs always low level

您好，this method would not be feasible as CS driving from hi to lo is necessary to trigger the logic of the monitor. So it needs to drive back hi after every transaction, it cannot remain low indefinitely. You may be reading FF back because the device may not have any valid data to provide resulting in an invalid transaction.