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cannot display characters using lcd.h and usb_cdc.h (solved)

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pfsdanny

Joined: 20 Nov 2010
Posts: 11
Location: Hong Kong

cannot display characters using lcd.h and usb_cdc.h (solved)

Posted: Mon Jan 17, 2011 12:37 am

Hi,

Here is my code
tester01.h :-

Code:

#FUSES NOBROWNOUT //No brownout reset
#FUSES BORV19
#FUSES NOPUT //No Power Up Timer
#FUSES NOCPD //No EE protection
#FUSES STVREN //Stack full/underflow will cause reset
#FUSES NOXINST //Extended set extension and Indexed Addressing mode disabled (Legacy mode)
#FUSES NOWRT //Program memory not write protected
#FUSES NOWRTD //Data EEPROM not write protected
#FUSES NOWRTC //configuration not registers write protected
#FUSES NOIESO //Internal External Switch Over mode disabled
#FUSES NOEBTR //Memory not protected from table reads
#FUSES NOEBTRB //Boot block not protected from table reads
#FUSES MCLR //Master Clear pin enabled
#FUSES NOPROTECT //Code not protected from reading
#FUSES NOCPB //No Boot Block code protection
#FUSES NOWRTB //Boot block not write protected
#FUSES NOLVP //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES HFOFST
#FUSES USBDIV2
#FUSES PLLEN
#FUSES BBSIZ1K //1K words Boot Block size
#FUSES CPUDIV1 //No System Clock Postscaler
#FUSES PCLKEN
#FUSES NODEBUG //Debug mode for use with ICD

#use delay(clock=12000000)
#use rs232(baud=9600,parity=N,xmit=PIN_B7,rcv=PIN_B5,bits=8)

tester01.c :-

Code:

#include <tester01.h>
#define LCD_ENABLE_PIN PIN_C6
#define LCD_RS_PIN PIN_C4
#define LCD_RW_PIN PIN_C5
#define LCD_DATA4 PIN_C0
#define LCD_DATA5 PIN_C1
#define LCD_DATA6 PIN_C2
#define LCD_DATA7 PIN_C3
#include <lcd.c>
#include <usb_cdc.h>
#use fast_io(b)
#use fast_io(c)

void main()
{
output_high(UARTREQUEST);
set_tris_b(0b00110000);
set_tris_c(0b10000000);
lcd_init();
usb_init_cs();
setup_adc_ports(sAN9|VSS_VDD);
setup_adc(ADC_CLOCK_DIV_2|ADC_TAD_MUL_0);
setup_spi(SPI_SS_DISABLED);
setup_wdt(WDT_OFF);
setup_timer_0(RTCC_INTERNAL);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
setup_timer_3(T3_DISABLED|T3_DIV_BY_1);
setup_ccp1(CCP_OFF);
setup_comparator(NC_NC_NC_NC);// This device COMP currently not supported by the PICWizard

//TODO: User Code
lcd_putc("\fHello");
while (true) {

}
}

The lcd display just show blocks not characters. When I remark the #include <usb_cdc.h> and usb_init_cs() the display is ok. Is there somthing wrong with my code?
I have compiled another program to test the usb function and it works ok.

Danny

pfsdanny

Joined: 20 Nov 2010
Posts: 11
Location: Hong Kong

memory too large

Posted: Mon Jan 17, 2011 4:02 am

I just modify the statement

From

Code:

struct commProp {
unsigned int8 count;
unsigned int8 size;
unsigned int8 buffer[20];
} uart, usb;

Code:

struct commProp {
unsigned int8 count;
unsigned int8 size;
unsigned int8 buffer[17];
} uart, usb;

Although the CCS reported that I have available memory, but the LCD does not display anything when the buffer size is larger than 17. Does not know whether this is a compiler bug or not.

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