DMA to UART serial Driver for ColdFire

ericgregori — Tue, 04 Sep 2007 09:04:30 GMT

I wrote a DMA to UART serial driver for ColdFire.

You can get it at

http://www.emgware.com/files/pub/ColdFire_OTHER/test_ser_dma_r09.zip

This firmware is an example of how to use DMA transfers to and from the UART.

The source code is only about 200 lines, but includes 600 lines of comments. The project is for a MCF52233DEMO board, but the firmware will work on a MCF521x, MCF5223x(Ethernet), or MCF5222x(USB) MPU.

Functions:

int main(void)

unsigned char Get_Byte_From_Ring() - Take one byte from RX ring buffer

void Use_DMA_to_Send_Message( char *null_terminated_string )

unsigned char Check_DMA_Message_Status()

init_DMA()

init_DMA_UART_RX()

DMA3_isr() - interrupt is generated only when RX buffer is full (256 bytes)

uart_init() - example of how to init UART from ColdFire template

Re: DMA to UART serial Driver for ColdFire

JackyPro — Wed, 23 Jul 2008 09:47:51 GMT

Thanks a million for your contribution.

Re: DMA to UART serial Driver for ColdFire

gachen — Wed, 04 May 2011 13:26:39 GMT

The link to your patch is not valid anymore, could you update it again?

topic Re: DMA to UART serial Driver for ColdFire in ColdFire/68K Microcontrollers and Processors

DMA to UART serial Driver for ColdFire

Re: DMA to UART serial Driver for ColdFire

Re: DMA to UART serial Driver for ColdFire