Overview
========
The dspi_edma_transfer example shows how to use DSPI driver in edma way:
In this example , one dspi instance used as DSPI master and another dspi instance used as DSPI slave in the same board.
1. DSPI master send/received data to/from DSPI slave in edma . (DSPI Slave using edma to receive/send the data)
Toolchain supported
===================
- IAR embedded Workbench 7.50.1
- Keil MDK 5.17
- GCC ARM Embedded 2015-4.9-q3
- Kinetis Development Studio IDE 3.0.0
- Atollic TrueSTUDIO 5.4.0
Hardware requirements
=====================
- Mini USB cable
- TWR-K22F120M board
- Personal Computer
- Elevator Tower
Board settings
==============
SPI one board:
Transfer data from instance0 to instance 1 of SPI interface.
SPI0 pins are connected with SPI1 pins of board
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
INSTANCE0(SPI0) CONNECTS TO INSTANCE1(SPI1)
Pin Name Board Location Pin Name Board Location
MISO B44 MISO B68
MOSI B45 MOSI B67
SCK B48 SCK B69
PCS0 B46 PCS0 B70
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Prepare the Demo
================
1. Connect a mini USB cable between the PC host and the OpenSDA USB port on the board.
2. Open a serial terminal on PC for OpenSDA serial device with these settings:
- 115200 baud rate
- 8 data bits
- No parity
- One stop bit
- No flow control
3. Download the program to the target board.
4. Reset the SoC and run the project.
Running the demo
================
When the demo runs successfully, the log would be seen on the OpenSDA terminal like:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
DSPI edma example start.
This example use one dspi instance as master and another as slave on one board.
Master use edma way , slave uses interrupt.
Please make sure you make the correct line connection. Basically, the connection is:
DSPI_master -- DSPI_slave
CLK -- CLK
PCS -- PCS
SOUT -- SIN
SIN -- SOUT
This is DSPI master edma transfer completed callback.
This is DSPI slave edma transfer completed callback.
DSPI transfer all data matched!
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Customization options
=====================
