ce214_readme.txt

PIC24H Code2例程

                     Readme File for Code Example:
               CE214 - UART Loop-back
               ---------------------------------------------------

This file contains the following sections:
1. Code Example Description
2. Folder Contents
3. Suggested Development Resources
4. Reconfiguring the project for a different PIC24H device
5. Revision History


1. Code Example Description:
----------------------------

In this code examples, 256-byte transmit buffer is tranmitted using UART and received back in 
receive buffer. This operation happens contineously.


void cfgUart1(void)
This function configures UART in loop-back mode with following settings viz., 8-data bits, 1-stop 
bit and no parity. 

void initUartBuff(void)
This function pre-initialise the transmit data buffer and DMA RAM buffer for transmission

void cfgDma0UartTx(void)
This function configures DMA channel 0 for UART transmission. DMA is configured in ping-pong mode 
with auto increment addressing for DMA memory read.

void cfgDma1UartRx(void)
This function configures DMA channel 0 for UART reception. DMA is configured in ping-pong mode 
with auto increment addressing for DMA memory write.

void __attribute__((__interrupt__)) _DMA0Interrupt(void)
This interrupt routine handles the transmit ping-pong buffer.

void __attribute__((__interrupt__)) _DMA1Interrupt(void)
This interrupt routine handles the receive ping-pong buffer.

2. Folder Contents:
-------------------
This folder contains the following sub-folders:
a. C:\Program Files\Microchip\MPLAB C30\support\gld
        This folder will have the device GLD file, it is used for building the project. 
	This file was provided with the MPLAB