Hal Drive Library Learning-spi

How to use the SPI Library
1 Declare the SPI Hanlde, for example:SPI_HandleTypeDef hspi
2 initializing the underlying resource by implementing the Hal_spi_mspinit () function
The following two must be initialized
A enable SPI clock
b Configuring the SPI Pins
The following is initialized as needed
C NVIC Interrupt Configuration
D DMA Configuration
3 configuration Hspi, including mode, DATASIZE,BAUDRATE,MSB/LSB,CRC, etc.
4 Call the Hal_spi_init () function, initialize the SPI configuration, and the underlying resource (by calling Hal_spi_mspinit ())

Initializing and configuring functions

  
 

   
  
 
   
  Span class= "pun"?  Hal_spi_init   ()   
 
   
  Span class= "pun"?  Hal_spi_deinit   ()   
 
   
  Span class= "pun"?  Hal_spi_mspinit   ()   
 
   
  Span class= "pun"?  Hal_spi_mspdeinit   ()   
 
   
  Span class= "pun"?  hal_spi_initextended   ()   
 
  
  
 

Note:
In the SPI, DataSize can specify the 4-16bit data, in the SPI_DR register, whether it is byte or word, data is always right-aligned, when communicating, only bits in the data word range will be output with the clock
For example, only 0-->5 bits on the left will be output, and only 0-->13 bits on the right will be output

 
   
  

  
    
   
 使用单线模式时，主机的MISO，从机的MOSI都可以作为普通IO使用。
 
   
  

From for notes (Wiz)

Hal Drive Library Learning-spi