#define SPI_TX_OCTAL 0x2000 /* transmit with 8 wires */ #define SPI_RX_OCTAL 0x4000 /* receive with 8 wires */ #define SPI_3WIRE_HIZ 0x8000 /* high impedance turnaround */ int irq; //中断号 void *controller_state; //控制器的实时状态 void *controller_data; char modalias[SPI_NAM...
spidev_sync_write: 1. static inline ssize_t spidev_sync_write(struct spidev_data *spidev, size_t len) { struct spi_transfer t = { .tx_buf = spidev->tx_buffer, .len = len, .speed_hz = spidev->speed_hz, }; struct spi_message m; spi_message_init(&m); spi_message_add_tai...
Octal SPI接口具有以下特点: 高速传输:Octal SPI接口采用8位并行传输,每个对应的数据线上都可以传输数据,最高速度可达到800Mbps,在高速通信场景下具有较大的优势。 大带宽:由于Octal SPI接口可以同时传输8个数据位,因此在保证速度的情况下,它可以实现更大的带宽,可以满足一些大数据传输的需求。 低功耗:Octal SPI接口...
Misplaced parenthesis make test of mode wrong in case mode is equal to SPI_TX_OCTAL or SPI_RX_OCTAL. Simplify this sanity test, if one of this bit is set, property cs-gpio must be present in DT. Fixes: a557fca ("spi: stm32_qspi: Add transfer_one_message() spi callback") Cc...
xfer->tx_nbits != SPI_NBITS_QUAD && xfer->tx_nbits != SPI_NBITS_OCTAL) return -EINVAL; if ((xfer->tx_nbits == SPI_NBITS_DUAL) && !(spi->mode & (SPI_TX_DUAL | SPI_TX_QUAD))) @@ -4171,7 +4174,8 @@ static int __spi_validate(struct spi_device *spi, struct spi_message...
(10)/* receive with 2 wires */#defineSPI_RX_QUAD_BITUL(11)/* receive with 4 wires */#defineSPI_CS_WORD_BITUL(12)/* toggle cs after each word */#defineSPI_TX_OCTAL_BITUL(13)/* transmit with 8 wires */#defineSPI_RX_OCTAL_BITUL(14)/* receive with 8 wires */#defineSPI_3...
#defineSPI_TX_QUAD 0x200 /* transmit with 4 wires */#defineSPI_RX_DUAL 0x400 /* receive with 2 wires */#defineSPI_RX_QUAD 0x800 /* receive with 4 wires */#defineSPI_CS_WORD 0x1000 /* toggle cs after each word */#defineSPI_TX_OCTAL 0x2000 /* transmit with 8 wires */#...
#define W25Q64_OCTAL_WORD_READ_QUAD_IO 0xE3 #define W25Q64_DUMMY_BYTE 0xFF void W25Q64_Config(void); void W25Q64_Read_ID(void); void W25Q64_PageProgram(uint32_t Address, uint8_t *DataArray, uint16_t Count); void W25Q64_SectorErase(uint32_t Address); ...
| SPI_RX_QUAD | SPI_RX_OCTAL) struct spidev_data { dev_t devt; spinlock_t spi_lock; struct spi_device *spi; struct list_head device_entry; /* TX/RX buffers are NULL unless this device is open (users > 0) */ struct mutex buf_lock; unsigned users; u8...
l SPI2:1-bit SPI模式、2-bit Dual SPI模式、4-bit Quad SPI模式、QPI模式、8-bit Octal模式、OPI模式 l SPI3:1-bit SPI模式、2-bit Dual SPI模式、4-bit Quad SPI模式、QPI模式 4,时钟频率可配置: l 在主机模式下:时钟频率可达80MHz l 在从机模式下:时钟频率可达60MHz 5,数据位的读写顺序可配置...