fongblinky build 2013.07.22.01 notes

// ***********************************************************************
// Program - FongBlinky
// Description - Blinky
// Author - TL Fong <fongmcu.blogspot.hk> <tlfong01hongkong@google.com>
// Build - 2013.07.22.01
// Date - 2013jul22hkt1202
// Hardware - NXP ARM Cortex M0 LPC1114
// Software - MDK-Lite/uVision 4.71, CIMSIS 1.1
// Program style - function/object (MIT OCW 6.01SC Intro EECS1)
// Development style - incremental testing
// ***********************************************************************

#include <stdio.h>
#include "lpc11xx.h"

// ***********************************************************************
// Function heirarchy
// ***********************************************************************

//   main()
//     blinky()
//       getLedPortNumber();
//       getGpioStructPointer();
//       getLedPinNumber();
//       setPortPinOutput()
//       setPortPinLow()
//       setPortPinHigh()
//       delayTenthSecond()
//       setPortPinDirectionOutput()
//       setGpioDataRegisterBitLow()
//       setGpioDataRegisterBitHigh()
//         setGpioDirectionRegisterBitHigh()
//         setPortPinValue()

// ***********************************************************************
// Gpio Pin Assignment
// ***********************************************************************

// Port Pin  Function
// -----------------------
//    0   2  Key 1
//    0   3  Key 2

//    1   4  Key 5
//    1   8          Led 1
//    1   9  Key 4

//    2   5          Led 4
//    2   7          Led 2
//    2   8          Led 3
//    3   4  Key 3

// ***********************************************************************
// Global constants and variables
// ***********************************************************************

// *** GPIO Port and pin number typedef and assignment***

typedef const int portNumber;
portNumber Port0 = 0;
portNumber Port1 = 1;
portNumber Port2 = 2;
portNumber Port3 = 3;
portNumber Port4 = 4;

typedef const int pinNumber;
pinNumber Pin0 = 0;
pinNumber Pin1 = 1;
pinNumber Pin2 = 2;
pinNumber Pin3 = 3;
pinNumber Pin4 = 4;
pinNumber Pin5 = 5;
pinNumber Pin6 = 6;
pinNumber Pin7 = 7;
pinNumber Pin8 = 8;
pinNumber Pin9 = 9;
pinNumber Pin10 = 10;
pinNumber Pin11 = 11;

typedef int directionValue;
directionValue InputDirection = 0;
directionValue OutputDirection = 1;

typedef LPC_GPIO_TypeDef *gpioStructPointerArray[4];
gpioStructPointerArray GpioStructPointerArray = {LPC_GPIO0, LPC_GPIO1, LPC_GPIO2, LPC_GPIO3};


// *** LED number typedef and assignment ***

typedef const int ledNumber;
ledNumber Led1 = 1;
ledNumber Led2 = 2;
ledNumber Led3 = 3;
ledNumber Led4 = 4;

int const LedNumberMax = 4;

typedef int ledPortArrayArrayIndex;

ledPortArrayArrayIndex LedPortIndex = 0;
ledPortArrayArrayIndex LedPinIndex = 1;

typedef int ledPortPinArrayArray[4][2];
ledPortPinArrayArray LedPortPinArrayArray = {{Port1, Pin8},{Port2, Pin7}, {Port2, Pin8}, {Port2, Pin5}};

// *** Key number typedef and assignment ***

typedef const int keyNumber;
keyNumber Key1 = 1;
keyNumber Key2 = 2;
keyNumber Key3 = 3;
keyNumber Key4 = 4;
keyNumber Key5 = 5;

int const KeyNumberMax = 5;

typedef int keyPortArrayArrayIndex;

keyPortArrayArrayIndex KeyPortIndex = 0;
keyPortArrayArrayIndex KeyPinIndex = 1;

typedef int keyPortPinArrayArray[5][2];
keyPortPinArrayArray KeyPortPinArrayArray = {{Port0, Pin2},{Port0, Pin3}, {Port3, Pin4}, {Port1, Pin9}, {Port1, Pin4}};

// typedef int tenthSecond;
// tenthSecond OnHalfSecond = 5;
// tenthSecond OffOneSecond = 10;
// tenthSecond FourSeconds = 40;

// *** Logical level defines ***

#define LOW 0
#define HIGH 1

typedef int logicLevelValue;

logicLevelValue LogicLevelLow = 0;
logicLevelValue LogicLevelHigh = 1;

// *** Time constants typedef ***

typedef int milliSecond;
milliSecond OnHalfSecond = 500;
milliSecond OffOneSecond = 1000;

typedef int repeatCount;
repeatCount FourTimes = 4;
repeatCount TwentyTimes = 20;


// ***********************************************************************
// Application timer Functions
// ***********************************************************************

void delayTenthSecond(int count)
  {
int i, j, k;
for (i = 0; i < count; i++)
    {
for (j = 0; j < 0x4; j++)
 {
        for (k = 0; k < 0x000BB00; k++)
          {
       }
}
     }
}

// ***********************************************************************
// System timer functions
// ***********************************************************************

static volatile uint32_t TimeTick = 0;

void SysTick_Handler(void)
{
       TimeTick++;
}

void delayMilliSecond(uint32_t mS)
{
  SysTick->LOAD = (((24000)*mS)-1);
  SysTick->VAL = 0;
  SysTick->CTRL |= ((1<<1)|(1<<0));
     
  while(!TimeTick)
  {
  };
  TimeTick = 0;
  SysTick->CTRL =0;
}


// ***********************************************************************
// Get Led port number and pin number
// ***********************************************************************

portNumber getLedPortNumber(ledNumber ledNumber, ledPortPinArrayArray ledPortPinArrayArray)
{
  int portNumber;
  portNumber = ledPortPinArrayArray [ledNumber - 1][LedPortIndex];
  return portNumber;
}

pinNumber getLedPinNumber(ledNumber ledNumber, ledPortPinArrayArray ledPortPinArrayArray)
{
  int ledPinNumber;
  ledPinNumber = ledPortPinArrayArray [ledNumber - 1][LedPinIndex];
  return ledPinNumber;
}

// ***********************************************************************
// Get Key port number and pin number
// ***********************************************************************

portNumber getKeyPortNumber(keyNumber keyNumber, keyPortPinArrayArray keyPortPinArrayArray)
{
  int portNumber;
  portNumber = keyPortPinArrayArray [keyNumber - 1][KeyPortIndex];
  return portNumber;
}

pinNumber getKeyPinNumber(keyNumber keyNumber, keyPortPinArrayArray keyPortPinArrayArray)
{
  int keyPinNumber;
  keyPinNumber = keyPortPinArrayArray [keyNumber - 1][KeyPinIndex];
  return keyPinNumber;
}

// ***********************************************************************
// Get GpioStructPointer
// ***********************************************************************

LPC_GPIO_TypeDef *getGpioStructPointer(int portNumber)
{
  LPC_GPIO_TypeDef *gpioStructPointer;
gpioStructPointer =  GpioStructPointerArray[portNumber];
return gpioStructPointer;
}

// ***********************************************************************
// Set pin direction and value
// ***********************************************************************

void setGpioDirectionRegisterBitLow(LPC_GPIO_TypeDef *gpio_struct_ptr, int bitNumber)
{
gpio_struct_ptr->DIR  &= ~(1 << bitNumber);
}

void setGpioDirectionRegisterBitHigh(LPC_GPIO_TypeDef *gpio_struct_ptr, int bitNumber)
{
gpio_struct_ptr->DIR |= (1 << bitNumber);
}

void setGpioDataRegisterBitLow(LPC_GPIO_TypeDef *gpio_struct_ptr, int bitNumber)
{
gpio_struct_ptr->DATA &= ~(1 << bitNumber);
}

void setGpioDataRegisterBitHigh(LPC_GPIO_TypeDef *gpio_struct_ptr, int bitNumber)
{
gpio_struct_ptr->DATA |= (1 << bitNumber);
}

void setPortPinDirection(LPC_GPIO_TypeDef *gpio_struct_ptr, int pinNumber, directionValue directionValue)
  {
  if (directionValue == InputDirection)
 setGpioDirectionRegisterBitLow(gpio_struct_ptr, pinNumber);
else
setGpioDirectionRegisterBitHigh(gpio_struct_ptr, pinNumber);
  }

void setPortPinValue(LPC_GPIO_TypeDef *gpio_struct_ptr, int pinNumber, logicLevelValue logicLevelValue)
{
  if (logicLevelValue == LogicLevelLow)
setGpioDataRegisterBitLow(gpio_struct_ptr, pinNumber);      
else
setGpioDataRegisterBitHigh(gpio_struct_ptr, pinNumber);  
}

// ***********************************************************************
// Get pin data value
// ***********************************************************************

logicLevelValue getGpioDataRegisterBitValue(LPC_GPIO_TypeDef *gpio_struct_ptr, int bitNumber)
{
logicLevelValue logicLevelValue;
logicLevelValue = gpio_struct_ptr->DIR  &= ~(1 << bitNumber);
return logicLevelValue;
}

// ***********************************************************************
// Led Initialization
// ***********************************************************************

void initializeLedPortPin(ledNumber ledNumber)
{
int portNumber;
int pinNumber;
LPC_GPIO_TypeDef *gpio_struct_ptr;

portNumber = getLedPortNumber(ledNumber, LedPortPinArrayArray);
gpio_struct_ptr = getGpioStructPointer(portNumber);

pinNumber = getLedPinNumber(ledNumber, LedPortPinArrayArray);

setPortPinDirection(gpio_struct_ptr, pinNumber, OutputDirection);
}

void initializeAllLedPortPins()
{
  int ledNumber;

  for (ledNumber = 1; ledNumber < LedNumberMax +1; ledNumber++)
  {
 initializeLedPortPin(ledNumber);
  }

}

// ***********************************************************************
// Key Initialization
// ***********************************************************************

void initializeKeyPortPin(keyNumber keyNumber)
{
int portNumber;
int pinNumber;
LPC_GPIO_TypeDef *gpio_struct_ptr;

portNumber = getKeyPortNumber(keyNumber, KeyPortPinArrayArray);
gpio_struct_ptr = getGpioStructPointer(portNumber);

pinNumber = getKeyPinNumber(keyNumber, KeyPortPinArrayArray);

setPortPinDirection(gpio_struct_ptr, pinNumber, OutputDirection);
}

void initializeAllKeyPortPins()
{
  int keyNumber;

  for (keyNumber = 1; keyNumber < KeyNumberMax +1; keyNumber++)
  {
 initializeLedPortPin(keyNumber);
  }
}

// ***********************************************************************
// Initialize all Led and Keys
// ***********************************************************************

void initializeLedKey()
{
initializeAllLedPortPins();
initializeAllKeyPortPins();
}

// ***********************************************************************
// Blink Led Function
// ***********************************************************************

void blinky(ledNumber ledNumber, int onTime, int offTime, int blinkCount)
{
  int count;
int portNumber;
int pinNumber;
LPC_GPIO_TypeDef *gpio_struct_ptr;

portNumber = getLedPortNumber(ledNumber, LedPortPinArrayArray);
gpio_struct_ptr = getGpioStructPointer(portNumber);

pinNumber = getLedPinNumber(ledNumber, LedPortPinArrayArray);

for (count = 0; count < blinkCount; count++)
{
  setPortPinValue(gpio_struct_ptr, pinNumber, LogicLevelLow);
     delayMilliSecond(onTime);  
setPortPinValue(gpio_struct_ptr, pinNumber, LogicLevelHigh);
     delayMilliSecond(offTime);
  }
}

// ***********************************************************************
// Echo key Function !!! not yet tested !!! tlfong01 2013jul2201
// ***********************************************************************

typedef logicLevelValue keyStatus;
keyStatus KeyPressed = LOW;
keyStatus KeyReleased = HIGH;

keyStatus getKeyStatus(keyNumber keyNumber)
{
keyStatus keyStatus;
int portNumber;
int pinNumber;
LPC_GPIO_TypeDef *gpio_struct_ptr;

portNumber = getKeyPortNumber(keyNumber, KeyPortPinArrayArray);
gpio_struct_ptr = getGpioStructPointer(portNumber);
pinNumber = getKeyPinNumber(keyNumber, KeyPortPinArrayArray);

keyStatus = getGpioDataRegisterBitValue(gpio_struct_ptr, pinNumber);
  return keyStatus;
}

void echoKey(keyNumber keyNumber, ledNumber ledNumber, int echoCount)
{
  int count;
keyStatus keyStatus;

for (count = 0; count < echoCount; count++)
{
keyStatus = getKeyStatus(keyNumber);
    if (keyStatus == KeyPressed)
{
 keyStatus = KeyReleased;
blinky(ledNumber, OnHalfSecond, OffOneSecond, FourTimes);
}
  }
}

// ***********************************************************************
// Test Functions
// ***********************************************************************

void testBlinkLed()
{
blinky(Led1, OnHalfSecond, OffOneSecond, FourTimes); // Port1, Pin8
blinky(Led2, OnHalfSecond, OffOneSecond, FourTimes); // Port2, Pin7
blinky(Led3, OnHalfSecond, OffOneSecond, FourTimes); // Port2, Pin8
blinky(Led4, OnHalfSecond, OffOneSecond, FourTimes); // Port2, Pin5
}

void testEchoKey() // not yet tested !!! tlfong01 2013jul2201
{
echoKey(Key4, Led1, FourTimes);
}

// ***********************************************************************
// Main Function
// ***********************************************************************

int main()
{  
initializeLedKey();
  testBlinkLed();
}

// ***********************************************************************
// End of Program
// ***********************************************************************

// .END //