5     \version 2021-08-04, V1.0.0, firmware for GD32L23x
94     spi_struct->device_mode          = SPI_SLAVE;  in spi_struct_para_init()
95     spi_struct->trans_mode           = SPI_TRANSMODE_FULLDUPLEX;  in spi_struct_para_init()
96     spi_struct->frame_size           = SPI_FRAMESIZE_8BIT;  in spi_struct_para_init()
97     spi_struct->nss                  = SPI_NSS_HARD;  in spi_struct_para_init()
98     spi_struct->clock_polarity_phase = SPI_CK_PL_LOW_PH_1EDGE;  in spi_struct_para_init()
99     spi_struct->prescale             = SPI_PSC_2;  in spi_struct_para_init()
100     spi_struct->endian               = SPI_ENDIAN_MSB;  in spi_struct_para_init()
141         reg1 |= spi_struct->device_mode;  in spi_init()
143         reg1 |= spi_struct->trans_mode;  in spi_init()
145         reg1 |= spi_struct->nss;  in spi_init()
147         reg1 |= spi_struct->endian;  in spi_init()
149         reg1 |= spi_struct->clock_polarity_phase;  in spi_init()
151         reg1 |= spi_struct->prescale;  in spi_init()
154 …if((SPI_FRAMESIZE_8BIT != spi_struct->frame_size) && (SPI_FRAMESIZE_16BIT != spi_struct->frame_siz…  in spi_init()
157             reg1 |= (spi_struct->frame_size & SPI_FRAMESIZE_MASK);  in spi_init()
165         reg2 |= spi_struct->device_mode;  in spi_init()
167         reg2 |= spi_struct->trans_mode;  in spi_init()
169         reg2 |= spi_struct->nss;  in spi_init()
171         reg2 |= spi_struct->endian;  in spi_init()
173         reg2 |= spi_struct->clock_polarity_phase;  in spi_init()
175         reg2 |= spi_struct->prescale;  in spi_init()
180         reg3 |= spi_struct->frame_size;  in spi_init()
290         SPI_ERROR_HANDLE("the parameter can not be 0 \r\n");  in i2s_psc_config()
301         SPI_ERROR_HANDLE("the peripheral must be SPI1 \r\n");  in i2s_psc_config()
341     i2sdiv = ((clks - i2sof) / 2U);  in i2s_psc_config()
499     \param[in]  data: 16-bit data
512     \retval     16-bit data
524       \arg        SPI_BIDIRECTIONAL_TRANSMIT: SPI work in transmit-only mode
525       \arg        SPI_BIDIRECTIONAL_RECEIVE: SPI work in receive-only mode
556     \retval     16-bit CRC polynomial
604     \retval     16-bit CRC value
731       \arg        SPI_HALFWORD_ACCESS: half-word access to FIFO
931       \arg        SPI_FLAG_TRANS: transmit on-going flag
938       \arg        I2S_FLAG_TRANS: transmit on-going flag