Author Topic: it's about to send program to LPC2148  (Read 274 times)

LPC2148

  • Jr. Member
  • **
  • Posts: 1
    • View Profile
    • Email
it's about to send program to LPC2148
« on: April 21, 2020, 05:32:25 am »
Hi all,

I will start to use lpc-h2148 arm board.I have it. I wrote program.
I have a few question which I don't know.
I don't have jtag module
I have paralel and serial port on my pc

question 1) I want to upload program to arm board, Could I upload program via USB port on the arm board? ( I did not try it)

question 2) Could I upload program with USB to TTL  only by using TX,RX,GND?
There are 5 pin on the USB to TTL (+5V,TXD,RXD,GND,+3V)

baund rate 9600
I tried like this flashmagic program, but failed (program gave this error code  operation failed. Failed to autobaund)

USB to TTL >>>> LPC2148
TX         >>>> P0.1 RX
RX         >>>> P0.0 TX
GND        >>>> GND

I need your answer and ideas
with best regards,

Andy Ayre

  • ESAcademy Staff
  • Sr. Member
  • *****
  • Posts: 2167
    • View Profile
    • Embedded Systems Academy, Inc.
    • Email
Re: it's about to send program to LPC2148
« Reply #1 on: April 21, 2020, 09:14:59 am »
Use a USB to RS232 cable, such as one from FTDI. Some of those cables are cheap and don't work properly. Put a MAX232 or similar between the cable and microcontroller. I suggest you look at the schematics of some off-the-shelf LPC2000 eval boards.

Andy

Embedded Systems Academy, Inc.
support at esacademy dot com