This file provides firmware functions to manage the following functionalities of the Serial peripheral interface (SPI):

• Initialization and Configuration
• Data transfers functions
• Hardware CRC Calculation
• DMA transfers management
• Interrupts and flags management.

Author:

MCD Application Team

Version:

V1.5.0

Date:

13-May-2011

  *          
  *          ===================================================================
  *                                 How to use this driver
  *          ===================================================================
  *          1. Enable peripheral clock using CLK_PeripheralClockConfig(CLK_Peripheral_SPIx,
  *             ENABLE) function (Refer to the product datasheet for the available SPI
  *           	peripherals)
  *
  *          2.  Enable the external Pull-up on the used SPI Pins using the
  *              GPIO_ExternalPullUpConfig() function or an eternal pull-up equivalent resistor
	*              (RPU = 45 KOhm typical value). 
  *
  *        
  *          3. Program the Polarity, Phase, First Data, Baud Rate Prescaler, Slave 
  *             Management, Peripheral Mode and CRC Polynomial values using the SPI_Init()
  *             function.
  *
  *          4. Enable the corresponding interrupt using the function SPI_ITConfig() if you
  *           	need to use interrupt mode. 
  *
  *          5. When using the DMA mode 
  *                   - Configure the DMA using DMA_Init() function
  *                   - Active the needed channel Request using SPI_DMACmd() function
  * 
  *          6. Enable the SPI using the SPI_Cmd() function.
  * 
  *          7. Enable the DMA using the DMA_Cmd() function when using DMA mode. 
  *
  *          8. Optionally you can enable/configure the following parameters without
  *             re-initialization (i.e there is no need to call again SPI_Init() function):
  *              - When bidirectional mode (SPI_Direction_1Line_Rx or SPI_Direction_1Line_Tx)
  *                is programmed as Data direction parameter using the SPI_Init() function
  *                it can be possible to switch between SPI_Direction_Tx or SPI_Direction_Rx
  *                using the SPI_BiDirectionalLineConfig() function.
  *              - When SPI_NSS_Soft is selected as Slave Select Management parameter 
  *                using the SPI_Init() function it can be possible to manage the 
  *                NSS internal signal using the SPI_NSSInternalSoftwareConfig() function.
  *          
  *          9. To use the CRC Hardware calculation feature refer to the Peripheral 
  *              CRC hardware Calculation subsection.
  *
  *  

Attention:

THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

© COPYRIGHT 2011 STMicroelectronics

Definition in file stm8l15x_spi.c.