PWM Blink 2013aug1404 build notes

int main()
{  
  // testTimerBlinkLed061();
  // testEchoKey061();
  // testPwmBlinkLed061();
  testPwmBlinkLedFast071();
  // testPwmBlinkLedSlow071();

}

.END

// ***********************************************************************
// Program - FongPwmBlinky
// Description - Testing LPC1114FN28/102 Pwm Blinky
// Author - TL Fong <fongmcu.blogspot.hk> <tlfong01hongkong@google.com>
// Build - 2013.08.14.04
// Date - 2013aug14hkt1613
// Hardware - NXP ARM Cortex M0 LPC1114FN28/102, LPC1114FBD48/302   
//            Somy, DingSung, FongToy LPC1114 Evaluation Board 
// IDE      - MDK-Lite/uVision 4.71, CoLinkEx 1.1, Flash Magic v7.51 
// ***********************************************************************

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

// *** fongconfig01.h ***

// ***********************************************************************
// GPIO port, pin, device, led, key, pwm numbering
// ***********************************************************************

// *** Port and pin numbers ***

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;

// *** Device numbers ***

typedef const int deviceNumber;

deviceNumber Device1 = 1;  
deviceNumber Device2 = 2;
deviceNumber Device3 = 3;
deviceNumber Device4 = 4;
deviceNumber Device5 = 5;
deviceNumber Device6 = 6;

deviceNumber Led1 = Device1;  
deviceNumber Led2 = Device2;
deviceNumber Led3 = Device3;
deviceNumber Led4 = Device4;
deviceNumber Led5 = Device5;

deviceNumber Key1 = Device1;
deviceNumber Key2 = Device2;
deviceNumber Key3 = Device3;
deviceNumber Key4 = Device4;
deviceNumber Key5 = Device5;

deviceNumber Pwm1 = Device1;
deviceNumber Pwm2 = Device2;
deviceNumber Pwm3 = Device3;
deviceNumber Pwm4 = Device4;
deviceNumber Pwm5 = Device5;

// ***********************************************************************

// *** portPinArray - array of 2 integers: portNumber, pinNumber ***

const int PortPinArraySize = 2;

typedef int portPinArray[PortPinArraySize]; 
const int MaxBoardDeviceNumber = 5;
const int MaxFongBoardLedNumber = 5;
const int MaxFongBoardKeyNumber = 3;
const int MaxFongBoardPwmNumber = 5;

typedef int portPinArrayIndex;
portPinArrayIndex PortIndex = 0; 
portPinArrayIndex PinIndex  = 1;

// *** Led/Key/Pwm configuration ***

portPinArray FongLedPortPinArray1 = {Port0, Pin5};
portPinArray FongLedPortPinArray2 = {Port0, Pin6};
portPinArray FongLedPortPinArray3 = {Port0, Pin3};
portPinArray FongLedPortPinArray4 = {Port0, Pin4};
portPinArray FongLedPortPinArray5 = {Port0, Pin7};

portPinArray FongKeyPortPinArray1 = {Port1, Pin0};
portPinArray FongKeyPortPinArray2 = {Port1, Pin5};
portPinArray FongKeyPortPinArray3 = {Port1, Pin8};

portPinArray FongPwmPortPinArray1 = {Port0, Pin1};
portPinArray FongPwmPortPinArray2 = {Port1, Pin1};
portPinArray FongPwmPortPinArray3 = {Port1, Pin2};
portPinArray FongPwmPortPinArray4 = {Port1, Pin4};
portPinArray FongPwmPortPinArray5 = {Port1, Pin9};


// *** portPinArrayPointerArray - array of pointers to portPinArray *** 

typedef portPinArray *portPinArrayPointerArray[MaxBoardDeviceNumber];                

portPinArrayPointerArray FongLedPortPinArrayPointerArray[MaxFongBoardLedNumber] = 
{
  &FongLedPortPinArray1, &FongLedPortPinArray2, &FongLedPortPinArray3, &FongLedPortPinArray4, &FongLedPortPinArray5,
};

portPinArrayPointerArray FongKeyPortPinArrayPointerArray[MaxFongBoardKeyNumber] = 
{
&FongKeyPortPinArray1, &FongKeyPortPinArray2, &FongKeyPortPinArray3
};

portPinArrayPointerArray FongPwmPortPinArrayPointerArray[MaxFongBoardPwmNumber] = 
{
&FongPwmPortPinArray1, &FongPwmPortPinArray2, &FongPwmPortPinArray3, &FongPwmPortPinArray4, &FongPwmPortPinArray5
};
                                                                
// *** Eval board structure ***

typedef struct
{
portPinArrayPointerArray *LedPortPinArrayPointerArray;
portPinArrayPointerArray *KeyPortPinArrayPointerArray;
portPinArrayPointerArray *PwmPortPinArrayPointerArray;
} mcuBoardStruct;

mcuBoardStruct *CreateFongBoardStruct()
{
  mcuBoardStruct *FongBoardStruct;

  FongBoardStruct->LedPortPinArrayPointerArray = FongKeyPortPinArrayPointerArray;
  FongBoardStruct->KeyPortPinArrayPointerArray = FongKeyPortPinArrayPointerArray;
  FongBoardStruct->PwmPortPinArrayPointerArray = FongKeyPortPinArrayPointerArray;

  return FongBoardStruct;
}

// *** fongdelay01.h ***

// ***********************************************************************
// Delay functions and count constants
// ***********************************************************************

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;
}

// *** Loop constants ***

typedef int repeatCount;
repeatCount OneTime     =  1;
repeatCount TwoTimes    =  2;
repeatCount ThreeTimes  =  3;
repeatCount FourTimes   =  4;
repeatCount FiveTimes   =  5;
repeatCount SixTimes    =  6;
repeatCount EightTimes  =  8;
repeatCount TenTimes    = 10;
repeatCount TwentyTimes = 20;

// # fonggpio01.h #

// ***********************************************************************
// GPIO basic functions 
// ***********************************************************************

// * typedefs and #defines *

typedef int directionValue;

directionValue InputDirection = 0;
directionValue OutputDirection = 1;

typedef int logicLevelValue;

logicLevelValue LogicLevelLow = 0;
logicLevelValue LogicLevelHigh = 1;

#define LOW 0
#define HIGH 1

// ***********************************************************************
// Name        - GpioStructPointerArray
// Description - Contains the 4 CMSIS port control structures
// ***********************************************************************

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

// ***********************************************************************
// Name   - getGpioStructPointer
// Input  - port number
// Output - GPIO control/data structure pointer
// ***********************************************************************

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

// ***********************************************************************
// Name   - setGpioDirectionRegisterBitInput
// Input  - port control structure, pin number
// Output - set pin as input
// ***********************************************************************

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

// ***********************************************************************
// Name   - setGpioDirectionRegisterBitOutput
// Input  - port control structure, pin number
// Output - set pin as output
// ***********************************************************************

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

// ***********************************************************************
// Name   - setGpioDataRegisterBitLow
// Input  - port control structure, pin number
// Output - set pin as output
// ***********************************************************************

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

// ***********************************************************************
// Name   - setGpioDataRegisterBitHigh
// Input  - port control structure, pin number
// Output - set pin as output
// ***********************************************************************

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

// ***********************************************************************
// Name   - setGpioDirectionRegister
// Input  - port control structure, pin number, direction value
// Output - set pin as input or output
// ***********************************************************************

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

// ***********************************************************************
// Name   - setGpioDataRegister
// Input  - port control structure, pin number, data value
// Output - none
// ***********************************************************************

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

// ***********************************************************************
// Function - getGpioDataRegisterBitValue
// Input    - GPIO structure pointer, bit position
// Output   - port pin data bit
// ***********************************************************************

logicLevelValue getGpioDataRegisterBitValue(LPC_GPIO_TypeDef *gpio_struct_ptr, int bitPosition)
{
logicLevelValue logicLevelValue;

int GpioDataRegisterMask = (1 << bitPosition);

if ((gpio_struct_ptr->DATA  &= GpioDataRegisterMask) == GpioDataRegisterMask) 
logicLevelValue = HIGH;
else
logicLevelValue = LOW;

return logicLevelValue;
}

// ***********************************************************************
// Name   - get port number for portPinArray
// Input  - port pin array
// Output - portNumber
// ***********************************************************************

portNumber getPortNumber061(portPinArray portPinArray)
{
int portNumber;
portNumber = portPinArray[PortIndex];
return portNumber;
}

// ***********************************************************************
// Name   - get port number from portPinArrayPointerArray
// Input  - portPinPointerArray, deviceNumber
// Output - portNumber
// ***********************************************************************

portNumber getPortNumber06(portPinArrayPointerArray portPinArrayPointerArray, deviceNumber deviceNumber)
{
  int portNumber; 
portNumber = getPortNumber061(*portPinArrayPointerArray[deviceNumber - 1]);  
return portNumber;
}

// ***********************************************************************
// Name   - get pin number for portPinArray
// Input  - port pin array
// Output - pinNumber
// ***********************************************************************

pinNumber getPinNumber061(portPinArray portPinArray)
{
int pinNumber;
pinNumber = portPinArray[PinIndex];
return pinNumber;
}

// ***********************************************************************
// Name   - get pin number from portPinArrayPointerArray and index
// Input  - portPinPointerArray, index
// Output - pinNumber
// ***********************************************************************

pinNumber getPinNumber06(portPinArrayPointerArray portPinArrayPointerArray, deviceNumber deviceNumber)
{
  int pinNumber; 
pinNumber = getPinNumber061(*portPinArrayPointerArray[deviceNumber - 1]);  
return pinNumber;
}

// *** fonggpio01.h ***

// ***********************************************************************
// LED functions 
// ***********************************************************************

// ***********************************************************************
// Name   - initialize LED port pin
// Input  - portPinPointerArray, index
// Output - none
// ***********************************************************************

void initializeLedPortPin06(portPinArrayPointerArray portPinArrayPointerArray, deviceNumber ledNumber)
{
int portNumber;
int pinNumber;
LPC_GPIO_TypeDef *gpio_struct_ptr;
                                          
portNumber = getPortNumber06(portPinArrayPointerArray, ledNumber);
gpio_struct_ptr = getGpioStructPointer(portNumber);

pinNumber = getPinNumber06(portPinArrayPointerArray, ledNumber);

setPortPinDirection(gpio_struct_ptr, pinNumber, OutputDirection);
}

// ***********************************************************************
// Function - initialize all LED port pins
// Input    - ledPortPinPointerArray
// Output   - none
// ***********************************************************************

void initializeAllLedPortPin06(portPinArrayPointerArray ledPortPinArrayPointerArray, int maxLedNumber)
{
  int ledNumber;

  for (ledNumber = 1; ledNumber < (maxLedNumber + 1); ledNumber++) // Caution!!! ledNumber starts 1, not 0 !!!
  {
 initializeLedPortPin06(ledPortPinArrayPointerArray, ledNumber);
  }
}

// ***********************************************************************
// Blinky functions 
// ***********************************************************************

void blinkLed06(portPinArrayPointerArray portPinArrayPointerArray, deviceNumber ledNumber, int onTime, int offTime, int blinkCount)
{
  int count;
int portNumber;
int pinNumber;
LPC_GPIO_TypeDef *gpio_struct_ptr;
                                       
portNumber = getPortNumber06(portPinArrayPointerArray, ledNumber);
gpio_struct_ptr = getGpioStructPointer(portNumber);

pinNumber = getPinNumber06(portPinArrayPointerArray, ledNumber);

  delayMilliSecond(500);

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

void testBlinkLed06(portPinArrayPointerArray portPinArrayPointerArray, int maxLedNumber, int onTime, int offTime, int blinkCount)
{
   int i;  
initializeAllLedPortPin06(portPinArrayPointerArray, maxLedNumber);
  
   for (i = 1; i < maxLedNumber + 1; i++)
{
  blinkLed06(portPinArrayPointerArray, i, onTime, offTime, blinkCount);
   }
}

void testTimerBlinkLed061() // OK 2013aug14
{
  testBlinkLed06(*FongLedPortPinArrayPointerArray, 5, 100, 200, 2);
}

void testBlinkLed062() // OK 2013aug13
{
  portPinArrayPointerArray *fongLedPortPinArrayPointerArray;

fongLedPortPinArrayPointerArray = FongLedPortPinArrayPointerArray;

  testBlinkLed06(*fongLedPortPinArrayPointerArray, 4, 100, 200, 3);
}

void testBlinkLed063() // !!! NOT WORKING !!! 2013aug13
{
  portPinArrayPointerArray *fongLedPortPinArrayPointerArray;

  mcuBoardStruct *FongBoardStruct;
  FongBoardStruct->LedPortPinArrayPointerArray = FongLedPortPinArrayPointerArray;
  FongBoardStruct->KeyPortPinArrayPointerArray = FongKeyPortPinArrayPointerArray;
  FongBoardStruct->PwmPortPinArrayPointerArray = FongPwmPortPinArrayPointerArray;

fongLedPortPinArrayPointerArray = FongBoardStruct->LedPortPinArrayPointerArray;  

  testBlinkLed06(*fongLedPortPinArrayPointerArray, 4, 100, 200, 3);
}

 
// *** fongkey01.h ***

// ***********************************************************************
// Key functions 
// ***********************************************************************

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

// ***********************************************************************
// Name   - initialize key port pin
// Input  - portPinPointerArray, index
// Output - none
// ***********************************************************************

void initializeKeyPortPin06(portPinArrayPointerArray portPinArrayPointerArray, deviceNumber keyNumber)
{
int portNumber;
int pinNumber;
LPC_GPIO_TypeDef *gpio_struct_ptr;
                                          
portNumber = getPortNumber06(portPinArrayPointerArray, keyNumber);
gpio_struct_ptr = getGpioStructPointer(portNumber);

pinNumber = getPinNumber06(portPinArrayPointerArray, keyNumber);

setPortPinDirection(gpio_struct_ptr, pinNumber, OutputDirection);
}

// ***********************************************************************
// Function - initialize all key port pins
// Input    - keyPortPinPointerArray
// Output   - none
// ***********************************************************************

void initializeAllKeyPortPin06(portPinArrayPointerArray keyPortPinArrayPointerArray, int maxLedNumber)
{
  int keyNumber;

  for (keyNumber = 1; keyNumber < (maxLedNumber + 1); keyNumber++) // Caution!!! keyNumber starts 1, not 0 !!!
  {
 initializeLedPortPin06(keyPortPinArrayPointerArray, keyNumber);
  }
}

// ***********************************************************************
// Function - getKeyStatus
// Input    - keyPortPinArrayPointerArray, keyNumber
// Output   - port pin data bit
// ***********************************************************************

keyStatus getKeyStatus(portPinArrayPointerArray keyPortPinArrayPointerArray, deviceNumber keyNumber)
{
keyStatus keyStatus;
int portNumber;
int pinNumber;
LPC_GPIO_TypeDef *gpio_struct_ptr;

portNumber = getPortNumber06(keyPortPinArrayPointerArray, keyNumber);
gpio_struct_ptr = getGpioStructPointer(portNumber);
pinNumber = getPinNumber06(keyPortPinArrayPointerArray, keyNumber);
 
keyStatus = getGpioDataRegisterBitValue(gpio_struct_ptr, pinNumber);

return keyStatus;
}

// ***********************************************************************
// Function - echo key by LED
// Input    - keyPinPortArrayPointerArray, keyNumber, ledPinPortArrayPointerArray, ledNumber
// Output   - none
// ***********************************************************************

void echoKey(portPinArrayPointerArray keyPortPinArrayPointerArray, deviceNumber keyNumber, portPinArrayPointerArray ledPortPinArrayPointerArray, deviceNumber ledNumber, int echoCount)
{
  int count;
keyStatus keyStatus;

for (count = 0; count < echoCount; count++)
{
 delayMilliSecond(1000);

 keyStatus = HIGH;
while (keyStatus == HIGH)
{
  keyStatus = getKeyStatus(keyPortPinArrayPointerArray, keyNumber);
       
if (keyStatus == LOW)
  {
      blinkLed06(ledPortPinArrayPointerArray, ledNumber, 100, 200, TwoTimes);
  delayMilliSecond(2000); 
keyStatus = HIGH;
break;   
       }
    }
}
}

void testEchoKey06(deviceNumber keyNumber, deviceNumber ledNumber, repeatCount repeatCount) 
{
echoKey(*FongKeyPortPinArrayPointerArray, keyNumber, *FongLedPortPinArrayPointerArray, ledNumber, repeatCount);
}

void testEchoKey061() 
{
testEchoKey06(Key1, Led1, TwoTimes); 
testEchoKey06(Key2, Led2, TwoTimes); 
testEchoKey06(Key3, Led3, TwoTimes); 
}


// *** fongtimer01.h ***

// ***********************************************************************
// Timer functions
// ***********************************************************************

// ***********************************************************************
// SysCon, IoCon, and Timer pointers
// ***********************************************************************

typedef LPC_SYSCON_TypeDef *lpcSysCon;
lpcSysCon LpcSysCon = LPC_SYSCON;

typedef LPC_IOCON_TypeDef *lpcIoCon;
lpcIoCon LpcIoCon = LPC_IOCON;

typedef LPC_TMR_TypeDef *timerStructPointerArray[4];
timerStructPointerArray TimerStructPointerArray = {LPC_TMR16B0, LPC_TMR16B1, LPC_TMR32B0, LPC_TMR32B1};

// *** Timer config and enable functions ***

// portPinArray FongPwmPortPinArray1 = {Port0, Pin1};
// portPinArray FongPwmPortPinArray2 = {Port1, Pin1};
// portPinArray FongPwmPortPinArray3 = {Port1, Pin2};
// portPinArray FongPwmPortPinArray4 = {Port1, Pin4};
// portPinArray FongPwmPortPinArray5 = {Port1, Pin9};

// ***********************************************************************
// Function - PWM blink PIO0_8 as C16B0_MAT0
// Input    - none
// Output   - none
// ***********************************************************************

// ***********************************************************************
// Program     - PWM Blinky
// Description - Blink Somy Board LED PIO0_8 using PWM 
// Build       - 2013.08.10.06
// Date        - 2013aug10hkt1645
// Author      - TL Fong
// Reference   - MIT 6.01SC Intro EE&CS1, <http://ocw.mit.edu/6-01SCS11>
// License     - Creative Commons BY-NC-SA <http://ocw.mit.edu/terms/>
// Hardware    - NXP ARM Cortex M0 LPC1114FBD48/302 (Somy Eval Board)  
// IDE         - MDK-Lite/uVision 4.71, CoLinkEx 1.1, Flash Magic v7.51 
// References  - 
// 1. UM10398 LPC111x/LPC11Cxx User manual R12 2012sep24 Chapter 18
// 2. LPC11xx.h CMSIS Cortex-M0 Core Peripheral Access Layer Header File
//    for NXP LPC11xx/LPC11Cxx V1.10 2010nov24
// Notes       -
// 1. PWM pin configuration 
//      PIO0_8/MISO0/CT16B0_MAT0 = Somy LPC1114 Eval Board P4 Pin 3 
// ***********************************************************************

void testFongBoardPwmBlinkLed06() // PIO0_8 as CT16B0
{
  // Enable System AHB clock for CT16B0 timer (Table 21 bit 7 CT16B0)
  LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 7); // CT16B0 = 1 enables CT16B0

// Enable System AHB clock for IOCON block (Table 21 bit 16 IOCON)
LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 16); // IOCON = 1 enable clk for IOCON

  // Set function of PIO0_8 pin (UM10398 Table 79 bits 2:0 FUNC) 
  LPC_IOCON->PIO0_8 &= ~0x7; // FUNC = 0x2 selects function of
  LPC_IOCON->PIO0_8 |=  0x2; //   CT16B0_MAT0 

  // Disable timer (Table 279 TMR16B0CTCR bit0 CEn)
  LPC_TMR16B0->TCR |= 0x1; // CEn = 0 disables timer ?????

                
  // Set PWM mode for CT16B0_MAT0,3 (Table 293 bit 0 PWMEN0, bit3 PWMEN3)
  LPC_TMR16B0->PWMC |= 0x9; // PWMENO & PWMEN3 = 1 enable MR0, MR3

  // Set External Match Register (Tables 290, 291) // not sure about this
  LPC_TMR16B0->EMR = (0x30 | 0x1); // bits 4, 5 = 11 toggle, bit 0 = 1 
  
  // Resets timer counter on MR3 match (Table 286 bit 10 MR3R)
  LPC_TMR16B0->MCR |= 0x400; // MR3R = 1 resets counter on MR3 match

  // Set prescale 12000 count of AHB clock  = 240 uS (Table 279 TMR16B0PR)
  LPC_TMR16B0->PR = 12000; // (1/(50,000,000/2) x 12000 = 240 uS

  // Set cycle length (Table 279 TMR16B0MR3, Figure 68)
  LPC_TMR16B0->MR3 = 4000; // 240uS x 4000 = 0.96 == 1 second

  // Set duty cycle (Table 279 TMR16B0MR0, Figure 68)
  LPC_TMR16B0->MR0 = 2000; // 240uS x 2000 == 0.5 second (50% duty cycle)

  // Start timer (Table 279 TMR16B0CTCR bit0 CEn)
  LPC_TMR16B0->TCR |= 0x1; // CEn = 1 enables timer 

  while (1)
{
// loop forever
}
}

// ***********************************************************************
// Function - Timer #defines
// Input    - none
// Output   - none
// ***********************************************************************

// *** Enable clocks for GPIO, ICON, 4 timers ***

#define SYSAHBCLKCTRL_GPIO                    ((unsigned int) 0x00000040) // Enables clock for GPIO
#define SYSAHBCLKCTRL_IOCON                   ((unsigned int) 0x00010000) // Enables clock for IO configuration block
#define SYSAHBCLKCTRL_CT16B0                  ((unsigned int) 0x00000080) // Enables clock for 16-bit counter/timer 0
#define SYSAHBCLKCTRL_CT16B1                  ((unsigned int) 0x00000100) // Enables clock for 16-bit counter/timer 1
#define SYSAHBCLKCTRL_CT32B0                  ((unsigned int) 0x00000200) // Enables clock for 32-bit counter/timer 0
#define SYSAHBCLKCTRL_CT32B1                  ((unsigned int) 0x00000400) // Enables clock for 32-bit counter/timer 1

#define TMR_TMR16B0TCR_COUNTERENABLE_ENABLED      ((unsigned int) 0x00000001)
#define TMR_TMR16B1TCR_COUNTERENABLE_ENABLED      ((unsigned int) 0x00000001)
#define TMR_TMR32B0TCR_COUNTERENABLE_ENABLED      ((unsigned int) 0x00000001)
#define TMR_TMR32B1TCR_COUNTERENABLE_ENABLED      ((unsigned int) 0x00000001)

#define TMR_TMR16B0MCR_MR3_RESET_ENABLED          ((unsigned int) 0x00000400)
#define TMR_TMR16B1MCR_MR3_RESET_ENABLED          ((unsigned int) 0x00000400)
#define TMR_TMR32B0MCR_MR3_RESET_ENABLED          ((unsigned int) 0x00000400)
#define TMR_TMR32B1MCR_MR3_RESET_ENABLED          ((unsigned int) 0x00000400)

void enableClockGpioIconAll4Timers08()
{
  LPC_SYSCON->SYSAHBCLKCTRL |= (SYSAHBCLKCTRL_GPIO);
  LPC_SYSCON->SYSAHBCLKCTRL |= (SYSAHBCLKCTRL_IOCON);
  LPC_SYSCON->SYSAHBCLKCTRL |= (SYSAHBCLKCTRL_CT16B0);
  LPC_SYSCON->SYSAHBCLKCTRL |= (SYSAHBCLKCTRL_CT16B1);
  LPC_SYSCON->SYSAHBCLKCTRL |= (SYSAHBCLKCTRL_CT32B0);
  LPC_SYSCON->SYSAHBCLKCTRL |= (SYSAHBCLKCTRL_CT32B1);
}

#define GpioPortPin08 ((unsigned int) 0x00000008)
#define GpioPortPin09 ((unsigned int) 0x00000009)

#define IOCON_PIO0_1_FUNC_MASK                    ((unsigned int) 0x00000007)
#define IOCON_PIO0_1_FUNC_GPIO                    ((unsigned int) 0x00000000)
#define IOCON_PIO0_1_FUNC_CLKOUT                  ((unsigned int) 0x00000001)
#define IOCON_PIO0_1_FUNC_CT32B0_MAT2             ((unsigned int) 0x00000002)

#define IOCON_PIO0_2_FUNC_MASK                    ((unsigned int) 0x00000007)
#define IOCON_PIO0_2_FUNC_GPIO                    ((unsigned int) 0x00000000)
#define IOCON_PIO0_2_FUNC_SSEL                    ((unsigned int) 0x00000001)
#define IOCON_PIO0_2_FUNC_CT16B0_CAP0             ((unsigned int) 0x00000002)

#define IOCON_PIO0_8_FUNC_MASK                    ((unsigned int) 0x00000007)
#define IOCON_PIO0_8_FUNC_GPIO                    ((unsigned int) 0x00000000)
#define IOCON_PIO0_8_FUNC_MISO0                   ((unsigned int) 0x00000001)
#define IOCON_PIO0_8_FUNC_CT16B0_MAT0             ((unsigned int) 0x00000002)

#define IOCON_PIO1_8_FUNC_MASK                    ((unsigned int) 0x00000007)
#define IOCON_PIO1_8_FUNC_GPIO                    ((unsigned int) 0x00000000)
#define IOCON_PIO1_8_FUNC_CT16B1_CAP0             ((unsigned int) 0x00000001)

#define IOCON_PIO1_9_FUNC_MASK                    ((unsigned int) 0x00000007)
#define IOCON_PIO1_9_FUNC_GPIO                    ((unsigned int) 0x00000000)
#define IOCON_PIO1_9_FUNC_CT16B1_MAT0             ((unsigned int) 0x00000001)

#define TMR_TMR16B0EMR_EM0_MASK                   ((unsigned int) 0x00000001) // External match 0
#define TMR_TMR16B0EMR_EM0                        ((unsigned int) 0x00000001)
#define TMR_TMR16B0EMR_EMC0_MASK                  ((unsigned int) 0x00000030)
#define TMR_TMR16B0EMR_EMC0_DONOTHING             ((unsigned int) 0x00000000)
#define TMR_TMR16B0EMR_EMC0_LOW                   ((unsigned int) 0x00000010)
#define TMR_TMR16B0EMR_EMC0_HIGH                  ((unsigned int) 0x00000020)
#define TMR_TMR16B0EMR_EMC0_TOGGLE                ((unsigned int) 0x00000030)
#define TMR_TMR16B0EMR_EM1_MASK                   ((unsigned int) 0x00000002) // External match 1
#define TMR_TMR16B0EMR_EM1                        ((unsigned int) 0x00000002)
#define TMR_TMR16B0EMR_EMC1_MASK                  ((unsigned int) 0x000000C0)
#define TMR_TMR16B0EMR_EMC1_DONOTHING             ((unsigned int) 0x00000000)
#define TMR_TMR16B0EMR_EMC1_LOW                   ((unsigned int) 0x00000040)
#define TMR_TMR16B0EMR_EMC1_HIGH                  ((unsigned int) 0x00000080)
#define TMR_TMR16B0EMR_EMC1_TOGGLE                ((unsigned int) 0x000000C0)
#define TMR_TMR16B0EMR_EM2_MASK                   ((unsigned int) 0x00000004) // External match 2
#define TMR_TMR16B0EMR_EM2                        ((unsigned int) 0x00000004)
#define TMR_TMR16B0EMR_EMC2_MASK                  ((unsigned int) 0x00000300)
#define TMR_TMR16B0EMR_EMC2_DONOTHING             ((unsigned int) 0x00000000)
#define TMR_TMR16B0EMR_EMC2_LOW                   ((unsigned int) 0x00000100)
#define TMR_TMR16B0EMR_EMC2_HIGH                  ((unsigned int) 0x00000200)
#define TMR_TMR16B0EMR_EMC2_TOGGLE                ((unsigned int) 0x00000300)
#define TMR_TMR16B0EMR_EM3_MASK                   ((unsigned int) 0x00000008) // External match 3
#define TMR_TMR16B0EMR_EM3                        ((unsigned int) 0x00000008)
#define TMR_TMR16B0EMR_EMC3_MASK                  ((unsigned int) 0x00000C00)
#define TMR_TMR16B0EMR_EMC3_DONOTHING             ((unsigned int) 0x00000000)
#define TMR_TMR16B0EMR_EMC3_LOW                   ((unsigned int) 0x00000400)
#define TMR_TMR16B0EMR_EMC3_HIGH                  ((unsigned int) 0x00000800)
#define TMR_TMR16B0EMR_EMC3_TOGGLE                ((unsigned int) 0x00000C00)

/*  PWM control register */
#define TMR_TMR16B0PWMC_PWM0_MASK                 ((unsigned int) 0x00000001)   
#define TMR_TMR16B0PWMC_PWM0_ENABLED              ((unsigned int) 0x00000001) // PWM mode is enabled for CT16Bn_MAT0
#define TMR_TMR16B0PWMC_PWM0_DISABLED             ((unsigned int) 0x00000000)
#define TMR_TMR16B0PWMC_PWM1_MASK                 ((unsigned int) 0x00000002)   
#define TMR_TMR16B0PWMC_PWM1_ENABLED              ((unsigned int) 0x00000002) // PWM mode is enabled for CT16Bn_MAT1
#define TMR_TMR16B0PWMC_PWM1_DISABLED             ((unsigned int) 0x00000000)
#define TMR_TMR16B0PWMC_PWM2_MASK                 ((unsigned int) 0x00000004)   
#define TMR_TMR16B0PWMC_PWM2_ENABLED              ((unsigned int) 0x00000004) // PWM mode is enabled for CT16Bn_MAT2
#define TMR_TMR16B0PWMC_PWM2_DISABLED             ((unsigned int) 0x00000000)
#define TMR_TMR16B0PWMC_PWM3_MASK                 ((unsigned int) 0x00000008)   
#define TMR_TMR16B0PWMC_PWM3_ENABLED              ((unsigned int) 0x00000008)
#define TMR_TMR16B0PWMC_PWM3_DISABLED             ((unsigned int) 0x00000000)

// ***********************************************************************
// Function - Clock setting and control
// Input    - none
// Output   - none
// ***********************************************************************

void enableAllClocks()
{
LPC_SYSCON->SYSAHBCLKCTRL |= (SYSAHBCLKCTRL_GPIO);
LPC_SYSCON->SYSAHBCLKCTRL |= (SYSAHBCLKCTRL_IOCON);
  LPC_SYSCON->SYSAHBCLKCTRL |= (SYSAHBCLKCTRL_CT16B0);
  LPC_SYSCON->SYSAHBCLKCTRL |= (SYSAHBCLKCTRL_CT16B1);
  LPC_SYSCON->SYSAHBCLKCTRL |= (SYSAHBCLKCTRL_CT32B0);
  LPC_SYSCON->SYSAHBCLKCTRL |= (SYSAHBCLKCTRL_CT32B1);
}

void startAllTimers()
{
  LPC_TMR16B0->TCR |= TMR_TMR16B0TCR_COUNTERENABLE_ENABLED;  
  LPC_TMR16B1->TCR |= TMR_TMR16B1TCR_COUNTERENABLE_ENABLED;  
  LPC_TMR32B0->TCR |= TMR_TMR32B0TCR_COUNTERENABLE_ENABLED;  
  LPC_TMR32B1->TCR |= TMR_TMR32B1TCR_COUNTERENABLE_ENABLED;
}

void stopAllTimers()
{
  LPC_TMR16B0->TCR &= ~TMR_TMR16B0TCR_COUNTERENABLE_ENABLED;  
  LPC_TMR16B1->TCR &= ~TMR_TMR16B1TCR_COUNTERENABLE_ENABLED;  
  LPC_TMR32B0->TCR &= ~TMR_TMR32B0TCR_COUNTERENABLE_ENABLED;  
  LPC_TMR32B1->TCR &= ~TMR_TMR32B1TCR_COUNTERENABLE_ENABLED;  
}

// ***********************************************************************
// Function - Timer setting and control
// Input    - none
// Output   - none
// ***********************************************************************

void setGpioPinTimer(int GpioPinNumber)
{
  switch (GpioPinNumber)
  {
  case GpioPortPin08:
    LPC_IOCON->PIO0_8 &= ~IOCON_PIO0_8_FUNC_MASK;
    LPC_IOCON->PIO0_8 |= IOCON_PIO0_8_FUNC_CT16B0_MAT0;
 break;
  case GpioPortPin09:
    LPC_IOCON->PIO0_9 &= ~IOCON_PIO0_8_FUNC_MASK;
    LPC_IOCON->PIO0_9 |= IOCON_PIO1_9_FUNC_CT16B1_MAT0;
break;
  }
}

// ***********************************************************************
// Function - PWM registers setting 
// Input    - none
// Output   - none
// ***********************************************************************

void setPwmRegisters()
{
  /* Configure match control register to reset on MR3 */
  LPC_TMR16B0->MCR = (TMR_TMR16B0MCR_MR3_RESET_ENABLED);

  /* External Match Register Settings for PWM */
  LPC_TMR16B0->EMR = TMR_TMR16B0EMR_EMC0_TOGGLE | TMR_TMR16B0EMR_EM0;
                    
  /* Enable PWM0 and PWM3 */
  LPC_TMR16B0->PWMC = TMR_TMR16B0PWMC_PWM0_ENABLED | TMR_TMR16B0PWMC_PWM3_ENABLED;
}

// ***********************************************************************
// Function - PWM duty cycle setting 
// Input    - none
// Output   - none
// ***********************************************************************

void setPwmSecond1DutyCycle50()
{
  // Set prescale 12000 count of AHB clock  = 240 uS (Table 279 TMR16B0PR)
  // LPC_TMR16B0->PR = 12000; // (1/(50,000,000/2) x 12000 = 240 uS
  // LPC_TMR16B0->PR = 6000;
LPC_TMR16B0->PR = 24000;

  // Set cycle length (Table 279 TMR16B0MR3, Figure 68)
  LPC_TMR16B0->MR3 = 4000; // 240uS x 4000 = 0.96 == 1 second

  // Set duty cycle (Table 279 TMR16B0MR0, Figure 68)
  LPC_TMR16B0->MR0 = 2000; // 240uS x 2000 == 0.5 second (50% duty cycle)
}

void setPwmPrescalePeriodDutycycle(int prescale, int period, int dutyCycle)
{
LPC_TMR16B0->PR = prescale; // 12000 = 240 uS
LPC_TMR16B0->MR3 = period; // 240uS x 4000 = 0.96 == 1 second
  LPC_TMR16B0->MR0 = dutyCycle; // 240uS x 2000 == 0.5 second (50% duty cycle)
}

// ***********************************************************************
// Function - PWM testing 
// Input    - none
// Output   - none
// ***********************************************************************

void testPwmBlinkLed061()
{
  testFongBoardPwmBlinkLed06();
}

void testFongBoardPwmBlinkLed07(int prescale, int period, int dutyCycle) 
{
enableAllClocks();
setGpioPinTimer(GpioPortPin08);
setGpioPinTimer(GpioPortPin09);
  setPwmRegisters();
setPwmPrescalePeriodDutycycle(prescale, period, dutyCycle);
startAllTimers();
}

void testPwmBlinkLedFast071()
{
  testFongBoardPwmBlinkLed07(3000, 4000, 2000);
}

void testPwmBlinkLedSlow071()
{
  testFongBoardPwmBlinkLed07(12000, 4000, 2000);
}

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

int main()
{  
  // testTimerBlinkLed061();
// testEchoKey061();
// testPwmBlinkLed061();
testPwmBlinkLedFast071();
// testPwmBlinkLedSlow071();
}

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

// .END