Tool/software: Code Composer Studio
Hi,
Can GPIO port function be used to send data directly to LCD or should I use any communication protocol as you mentioned before?
This is my code...
#include "driverlib.h"
#include "device.h"
#include "lcd.h"
#include "stdlib.h"
#include "stdlibf.h"
//#define Port_A GPIO_PORT_A
int Hex_data;
unsigned char Cmd;
uint16_t i;
void LCD_init(void);
void LCD_cmd(unsigned char Cmd);
void LCD_disp(const char *Msg);
char *Msg = "Hello World!";
//
// Main
//
void main(void)
{
//
// Initialize device clock and peripherals
//
Device_init();
//
// Initialize GPIO and configure the GPIO pin as a push-pull output
//
Device_initGPIO();
GPIO_setPortPins(GPIO_PORT_A,0x0101003F);
GPIO_setDirectionMode(GPIO_PORT_A,GPIO_DIR_MODE_OUT);
GPIO_setPadConfig(52, GPIO_PIN_TYPE_PULLUP); // Enable pullup on GPIO52
GPIO_setPadConfig(97, GPIO_PIN_TYPE_PULLUP); // Enable pullup on GPIO97
GPIO_setPinConfig(GPIO_52_GPIO52);
GPIO_setPinConfig(GPIO_97_GPIO97);
GPIO_setDirectionMode(52, GPIO_DIR_MODE_OUT);
GPIO_setDirectionMode(97, GPIO_DIR_MODE_OUT);
while(*Msg != '\0')
{
LCD_disp(Msg);
DEVICE_DELAY_US(200);
Msg++;
}
}
void LCD_init(void)
{
DEVICE_DELAY_US(2000);
LCD_cmd(0x30);
DEVICE_DELAY_US(1000);
LCD_cmd(0x30);
DEVICE_DELAY_US(100);
LCD_cmd(0x30);
LCD_cmd(0x38); // 8-bit mode 2 lines display
LCD_cmd(0x10); // Shift cursor position to left
LCD_cmd(0x01); // clear display
LCD_cmd(0x06); // shift cursor to right
LCD_cmd(0x0f); // display on cursor blinking
}
void LCD_cmd(unsigned char Cmd)
{
GPIO_writePin(52, 0);
GPIO_writePortData(GPIO_PORT_A,Cmd);
GPIO_writePin(97, 1);
DEVICE_DELAY_US(200);
GPIO_writePin(97, 0);
}
void LCD_disp(const char *Msg)
{
Hex_data=atoi(Msg);
GPIO_writePin(52, 1);
GPIO_writePortData(GPIO_PORT_A,Hex_data);
GPIO_writePin(97, 1);
DEVICE_DELAY_US(46000);
GPIO_writePin(97, 0);
}
there is no error in the program but I am not getting the output. I know there will be a mistake.
Please help me out in this.
