Nuts and Volts - July 2010

EDTP Electronics, Inc. PIC24FJ/PIC32MX Trainer MCP2200 USB-to-UART Converter www.edtp.com

SOURCES

Microchip MCP2200 Microchip C30 C Compiler PIC24FJ128GA006 www.microchip.com

Here’s the rest of the picture:

char data_out;
int main(void)
{
data_out = 0x20;
//SETUP LEDS
TRISCbits.TRISC13 = 0;
TRISCbits.TRISC14 = 0;
LED13_OFF();
LED14_OFF();
initUART();
LCDInit();
DelayMs(100);
strcpy((char*)LCDText, “ MCP2200 “
““““““““““““““““““““““““ USB-TO-UART”);

LCDUpdate();

do{
U2TXREG = data_out++;
if(data_out > ‘z’)
 data_out = 0x20;
DelayMs(100);
}while(1);

Don’t worry. I’ll post all of the code to drive the LCD

THE DESIGN CYCLE

■ SCREENSHOT 4. Enough said ...

and the PIC24FJ128GA006’s UART in our usual spot at www.nutsvolts.com. If those strcpy lines give you heartburn, code it like this:

strcpy((char*)LCDText,
“““““MCP2200 USB-TO-UART”);

You’ll get the same result on the LCD. The UART code that is spinning between the do-while braces will send every ASCII character between a space and the lower-case z, and start over again at the space character (0x20). Okay. Now that the MCP2200 is in your Design Cycle, we can cue Porky ... “Th-Th-Th-Th-Th- ... That’s all, folks.” NV