arm mannual

7/27/2019 Arm Mannual

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2012

ARM

ARM MANNUAL

VIKALP

DRMZ SYSTEM INNOVATIONS PVT. LTD. | Bhopal (MP)


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Contents

1 ARM TUTORIAL ..................................................................................................................................... 2

1.1 Steps to use KEIL U-Vision .......................................................................................................... 2

2 Setting up the KEIL .............................................................................................................................. 12

2.1 You can add groups by using manage components or directly as well ...................................... 14

3 Snapshots for using manage components tool................................................................................... 18

4 Sample codes ................................................................................................................................... 26

4.1 LED blinking on any port ............................................................................................................. 26

4.2 using lcd ...................................................................................................................................... 26

4.3 Using ADC .................................................................................................................................... 28


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1 ARM TUTORIALSETTINGS OF KEILwith snapshots

STEPS FOR USING KEIL TO PROGRAMwith snapshots

SAMPLE CODES

1) After loading USB boot-loader firmware (already done in our board) to theBlueBoard-LPC214X, (our board has 2148)hold down SW1 (USBBL) and SW3 (RESET), then release SW3 first and finally

SW1.Now the pre-loaded USB boot-loader which allows you to enumerate the board

as a Mass Storage Device .Drag the compiled binary file and drop onto the deviceand reset the board using SW3.keep Bluetooth of your device off.

2) In order to check your board or for using the board first time a number of samplecodes and their corresponding binary files are stored in 2 different folders. Copy thebinary files to the mass storage drive and delete the pre-existing files.

3) As per my information given LED code is not for this board. So after trying thepre-existing codes you can start coding with Keil-U Vision 4.

1.1 Steps to use KEIL U-Vision Following are some snapshots of a number of settings which you have to do


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Here \Obj\serial.axf and \Obj\serial.bin are just your filenames.

They can be interpreted as filename.axf and filename.bin


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2 Setting up the KEIL1. Open KEIL uVISION 4

2. Open a new uVision Project

3. Choose Philips NXP , then select LPC 2148.

4 Do not allow it to add default startup file by itself. Do it manually.

5 Add groups to target and name them as source, docs and startup. (Do this by using manage

components). Add file startup.s to the folder named source.


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6 click on new , write your code , save as main.c, add main.c file to your source group and then build

your target.


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2.1 You can add groups by using manage components or directly as wellDirect method -


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3 Snapshots for using manage components tool


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Now select source to add startup.s. Click on add files button.


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Startup.s added

Write your code and save it as main.c


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Now add your main.c to your group source


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Select your main.c and add it

Adding lcd.h to group source for using lcd


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Adding lcd.c to group source

Copy the c compiler header file lcd.h to the folder in which you are saving your code.


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Click on build target to build your binary/hex file.


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Try.axf is used to make your try.bin which you have to load into your processor.

The ones which we can use can be used in 4 ways which is programmable.

The pins will be in general input/output configuration by default.

There are 2 registers

1) Register 0 has 32 and register 1 also has 32 bits.2) We can use all 32 pins of register 0 but we can use only 16thto 31stbit of register 1.3) PINSEL0 and PINSEL1 registers are used to define weather the pin is to be used as GPIO or anyother alternate function.4) IODIR can be used for defining as input/output.5) IOSET is used to write 1 to any output. (*defining 0 by IOSET doesnt mean making output 0)6) IOCLR is used to write 0 to any output. (*defining 0 by IOCLR doesnt mean making output 0)7) In order to use various peripherals like ADC , LCD etc you need to include headers and also add

files to your source group.


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8) The various .c and .h gives you the details of the various functions we are using informationabout their aruguements.

4 Sample codes 4.1 LED blinking on any port

include //Including the header

void delay_sec(unsigned int x) //creating a function for delay using timer

{

T0MR0 = x; // x is number of seconds delay as the clock is set for 1 sec

// which means that the timer counter will increase by 1 in 1 sec.

T0MCR = 2; // Clear on match mode of timer is used

T0PR = 0x00E4E1C0; // Prescaler for 1 sec (1 increament means 1 clock pulse in 1

T0TCR = 0x1; // Enable the timer

while(T0TC < T0MR0); //Wait till match between counter and number of seconds delay

T0TCR = 0x0; // Disable the timer

T0TC = 0x0; //Precautionally clear the counter of timer

}

int main (void)

{

IODIR1 = 0x00FF0000; //The bits corresponding to 1 will be output and 0 will be input.

//Here pins 16 to 23 all are output

while (1)

{

IOSET1= 0x00FF0000; // giving output high or 3.3 volts on pins 16 to 23

delay_sec(100);

IOCLR1=0x00F00000; // giving output low or 0 volts to pins 20 to 23

// PSpins 16 to 19 still have 3.3 volts output

delay_sec(100);

}

}

4.2 using lcd#include //////**** Including the header******/////////////

#include "lcd.h" //////header for lcd

unsigned int z=0; //////variable declaretion

char y = 'a';


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void delay_sec(unsigned int x) //////creating a function for delay using timer

{

T0MR0 = x; ////// x is number of seconds delay as the clock is set for 1 sec

//////which means that the timer counter will increase by 1 in 1 sec.

T0MCR = 2; //////Clear on match mode of timer is used

T0PR = 0x00E4E1C0; //////Prescaler for 1 sec (1 increament means 1 clock pulse in

1 sec)

T0TCR = 0x1; //////Enable the timer

while(T0TC < T0MR0); //////Wait till match between counter and number of seconds

delay

T0TCR = 0x0; //////Disable the timer

T0TC = 0x0; //////Precautionally clear the counter of timer

}

int main (void)

{

PINSEL1=0x00000000; //////declaring the ports to be used as GPIO which means as

//////general purpose input output

PINSEL0=0x00000000;

IODIR0=0xFFFFFFFF; ////// The bits corresponding to 1 will be output and 0 will be

//////input. Here all are output

IODIR1=0x00FF0000; //////The bits of from 16 to 23 will be output rest as input.

init_lcd(); //////Initializing the lcd

lcd_clear(); ////// clearing the lcd

while (1) /* Loop forever */

{

for(z=0;z


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delay_sec(10);

}

4.3 Using ADC#include

#include including headers

#include "lcd.h"

#include "adc.h"

void wait(int count) another way to introduce a delay

{

int j=0,i=0;

for(j=0;j


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wait(100000);

lcd_clear(); clear display

while(1)

{

process_adc(); Read ADC value and display it on first

line of LCD

wait(30000);

}

}

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