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11 years, 5 months ago.

interfacing with othe device

Dear All, I need to connect MBED with programmable power supply (PS) for getting feedback with the information of PS. and the PS has a baud rate 2400 bps. I try the program to communicate with PC and it okay, MBED respons to Teraterm with the character L what I want to. but how to display on LCD Display?? here the program <<code>> #include "mbed.h"

  1. include "TextLCD.h"
  2. define CMD_L (0x4C)

TextLCD lcd(p15, p16, p25, p26, p19, p20); rs, e, d4-d7

Serial device(p28, p27); tx, rx

int main() { device.baud(2400); lcd.printf("Starting...\n"); wait(5); lcd.cls(); while(5) {

wait(1); device.putc(CMD_L); "L"

lcd.printf("%s\r\n", device.getc());

} } <<\code>>

can some body help or suggestion?

thanks before..

1 Answer

Mel Lau
11 years, 5 months ago.

What type of LCD do you have, look at the source to TextLCD.cpp it supports several LCD, the default is LCD16x2. Also do a locate to position your cursor. Sample:

lcd.cls(); lcd.locate(0,0); lcd.printf("Hello world"); lcd.locate(0,10); lcd.printf("%c X-axis: %02u.%03u sec",(position == HORZ) ? '#' : ' ' , xtime/1000, xtime % 1000 );

Also in your code does getc() return a int ? If so it should be printf("%c",device.get());