MQX Software SolutionsのトピックRe: RS485 on TWR-SER

RS485 on TWR-SER

ajaygore — Wed, 21 Feb 2018 14:18:45 GMT

I am Working on freescale MCF3225x and TWR-SER board in which I am using C:\Program Files\Freescale\Freescale MQX 3.4\demo\telnet_to_serial\codewarrior \telnet2ser example ,this example work fine with RS232 output (transmit and receive ) but as I change jumper setting to RS 485, I can send data string from tower to PC but PC to Tower data string does not get transmit.

Re: RS485 on TWR-SER

danielchen — Fri, 23 Feb 2018 08:11:07 GMT

Hi Ajay:

MQX 3.4 is very old, I would suggest you try this in a new version.

Regards

Daniel

Re: RS485 on TWR-SER

ajaygore — Tue, 27 Feb 2018 12:50:59 GMT

I have tried with new codewarrior v11 and MQX 4.2 ,with example C:\Freescale\Freescale_MQX_4_2\rtcs\examples\eth_to_serial I got error

Fatal Error: Device "" is not interrupt driven serial line.
This demo application requires enabled interrupt driven serial line (i.e "ittyf:").
Please define proper device using macro SERIAL_DEVICE and recompile this demo application.
Please add proper configuration to user_config.h
i.e #define BSPCFG_ENABLE_ITTYF 1
#define BSP_DEFAULT_IO_CHANNEL_DEFINED
#define BSP_DEFAULT_IO_CHANNEL "ittyf:"

1. I try by putting #define BSPCFG_ENABLE_ITTYF 1 #define BSP_DEFAULT_IO_CHANNEL_DEFINED #define BSP_DEFAULT_IO_CHANNEL "ittyf:" this lines in user_conf.h ,but got error
Fatal Error: Unable to open device "ittyf:".

2. I have try with a,b,c instead of f in ITTYF and ittyf but not work for me

Re: RS485 on TWR-SER

ajaygore — Sat, 03 Mar 2018 20:05:57 GMT

eth_to_serial example work with RS232 with configuration ittyb.