Tool/software: Code Composer Studio
Hi
I am using JHD 162A LCD module to display a message("Hello world").
I am able to build code without errors but when I tried to run it, the program stucked into exit.c file.
And the LCD is displaying:
1st row - 16 "5X7" matrix
2nd row - blank.
// PB0-7 -> Data lines D0-D7
// PD0 -> RS
// PD1 -> Enable
//**********************************************************************88
#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
#include "driverlib/sysctl.h"
#include "driverlib/gpio.h"
unsigned char pins=(GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7);
void Lcd_data(unsigned char data)
{
GPIOPinWrite(GPIO_PORTB_BASE, pins, data); //Put on the Data Pins 0x01 to Clear LCD screen
GPIOPinWrite(GPIO_PORTD_BASE, GPIO_PIN_0|GPIO_PIN_1,0x03); //RS=1 | E=1
SysCtlDelay(2); //Enable Pulse Width (High Level) 230 nano second
GPIOPinWrite(GPIO_PORTD_BASE, GPIO_PIN_0|GPIO_PIN_1,0x01); //RS=1 | E=0
SysCtlDelay(4167); //1 milliseconds delay
}
void Display(unsigned char *str)
{
while(*str)
{
Lcd_data(*str);
str++;
}
}
int main(void)
{
SysCtlClockSet(SYSCTL_SYSDIV_16|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|SYSCTL_OSC_MAIN); //12.5MHz
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
GPIOPinTypeGPIOOutput(GPIO_PORTB_BASE, GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3| GPIO_PIN_4| GPIO_PIN_5| GPIO_PIN_6| GPIO_PIN_7);
GPIOPinTypeGPIOOutput(GPIO_PORTD_BASE, GPIO_PIN_0|GPIO_PIN_1);
//Wait 15 Miliseconds after LCD Power Up//
SysCtlDelay(62500);
GPIOPinWrite(GPIO_PORTD_BASE, GPIO_PIN_0|GPIO_PIN_1,0x00); //RS=0 | E=0
//Initialize the LCD display with commands
GPIOPinWrite(GPIO_PORTB_BASE, pins, 0x38); //Put on the Data Pins 0x38 to get 2 Lines 5x7 Matrix
GPIOPinWrite(GPIO_PORTD_BASE, GPIO_PIN_0|GPIO_PIN_1,0x02); //RS=0 | E=1
SysCtlDelay(2); //Enable Pulse Width (High Level) 230 nano second
GPIOPinWrite(GPIO_PORTD_BASE, GPIO_PIN_0|GPIO_PIN_1,0x00); //RS=0 | E=0
SysCtlDelay(4167); //1 milliseconds delay
GPIOPinWrite(GPIO_PORTB_BASE, pins, 0x0c); //Put on the Data Pins 0x0c to Display ON cursor OFF
GPIOPinWrite(GPIO_PORTD_BASE, GPIO_PIN_0|GPIO_PIN_1,0x02); //RS=0 | E=1
SysCtlDelay(2); //Enable Pulse Width (High Level) 230 nano second
GPIOPinWrite(GPIO_PORTD_BASE, GPIO_PIN_0|GPIO_PIN_1,0x00); //RS=0 | E=0
SysCtlDelay(4167); //1 milliseconds delay
GPIOPinWrite(GPIO_PORTB_BASE, pins, 0x0e); //Put on the Data Pins 0x0e to Display ON cursor ON
GPIOPinWrite(GPIO_PORTD_BASE, GPIO_PIN_0|GPIO_PIN_1,0x02); //RS=0 | E=1
SysCtlDelay(2); //Enable Pulse Width (High Level) 230 nano second
GPIOPinWrite(GPIO_PORTD_BASE, GPIO_PIN_0|GPIO_PIN_1,0x00); //RS=0 | E=0
SysCtlDelay(4167); //1 milliseconds delay
GPIOPinWrite(GPIO_PORTB_BASE, pins, 0x01); //Put on the Data Pins 0x01 to Clear LCD screen
GPIOPinWrite(GPIO_PORTD_BASE, GPIO_PIN_0|GPIO_PIN_1,0x02); //RS=0 | E=1
SysCtlDelay(2); //Enable Pulse Width (High Level) 230 nano second
GPIOPinWrite(GPIO_PORTD_BASE, GPIO_PIN_0|GPIO_PIN_1,0x00); //RS=0 | E=0
SysCtlDelay(4167); //1 milliseconds delay
GPIOPinWrite(GPIO_PORTD_BASE, GPIO_PIN_0|GPIO_PIN_1,0x01); //RS=1 | E=0
Display("Hello world");
}
I have compiled this code from various posts from this community.
