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| SPI_I2S_FLAG | 説明 |
| SPI_I2S_FLAG_BSY | Busy flag |
| SPI_I2S_FLAG_OVR | Overrun flag |
| SPI_FLAG_MODF | Mode fault flag |
| SPI_FLAG_CRCERR | CRC error flag |
| I2S_FLAG_UDR | Underrun flag |
| I2S_FLAG_CHSIDE | Channel side flag |
| SPI_I2S_FLAG_TXE | Transmit buffer empty flag |
| SPI_I2S_FLAG_RXNE | Receive buffer not empty flag |
