* chip_select reflects how this chip is wired to that master; * it's less than num_chipselect. */u16 bus_num;/*spi总线编号*/u16 chip_select;/*片选*//* mode becomes spi_device.mode, and is essential for chips * where the default of SPI_CS_HIGH = 0 is wrong. */u8 mode;/*模...
#define SPI_MASTER_NO_RX BIT(1) /* can't do buffer read */ #define SPI_MASTER_NO_TX BIT(2) /* can't do buffer write */ /* lock and mutex for SPI bus locking */ spinlock_t bus_lock_spinlock; struct mutex bus_lock_mutex; /* flag indicating that the SPI bus is locked for ...
signal regSpiCsB : std_logic := '1'; signal regSpiMosi : std_logic := '1'; signal regTransferDoneDelayed : std_logic := '1'; -- Signals signal intTransferDone : std_logic; -- Attributes attribute clock_signal : string; attribute clock_signal of inClk : signal is "yes"; begin -...
*/struct spi_device *spi; /*传输的目的设备*/unsigned is_dma_mapped:1; /*如果为真,此次调用提供dma和cpu虚拟地址。*//* REVISIT: we might want a flag affecting the behaviorofthe*lasttransfer ... allowing thingslike"read 16 bit length L"* immediately followedby"read L bytes". Basically im...
* chip_select reflects how this chip is wired to that master; * it's less than num_chipselect.*/u16 bus_num; u16 chip_select;/*mode becomes spi_device.mode, and is essential for chips * where the default of SPI_CS_HIGH = 0 is wrong.*/u32 mode;/*... may need additional spi_...
{ secremain = len; // sector remaining space less than 4096 } while(1) { read_data(secpos * 4096, save_buffer, 4096); // read sector data for(i = 0; i < secremain; i++) {// check data, if all data is 0xFF no need erase sector if(save_buffer[secoff + i] != 0XFF)...
Both devices have a power-on reset function to ensure the output is at a known state upon ...
The SPI is 1.2, indicating that you're ahead of schedule. Remarks An SPI ratio greater than 1 indicates that you're ahead of schedule. Likewise, an SPI ratio less than 1 indicates that you're behind schedule. For example, an SPI of 1.5 means that you've taken only 67 percent of ...
/* Calculation of the size between the write address and the end of the page */ current_addr = 0; while (current_addr <= WriteAddr) { current_addr += W25Q128FV_PAGE_SIZE; } current_size = current_addr - WriteAddr; /* Check if the size of the data is less than the remaining ...
(1)MISO– Master Input Slave Output,主设备数据输入,从设备数据输出; (2)MOSI– Master Output Slave Input,主设备数据输出,从设备数据输入; (3)SCLK – Serial Clock,时钟信号,由主设备产生; (4)CS – Chip Select,从设备使能信号,由主设备控制。