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testSuiteProto.c
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testSuiteProto.c
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#include <lpc214x.h>
#define PLOCK 0x00000400
// Matrix Columns
#define COL0 (IO1PIN & 1 << 19)
#define COL1 (IO1PIN & 1 << 18)
#define COL2 (IO1PIN & 1 << 17)
#define COL3 (IO1PIN & 1 << 16)
// Switch pins
#define SW2 (IOPIN0 & (1 << 14))
#define SW3 (IOPIN0 & (1 << 15))
#define SW4 (IOPIN1 & (1 << 18))
#define SW5 (IOPIN1 & (1 << 19))
#define SW6 (IOPIN1 & (1 << 20))
//LCD pins
#define RS_ON (IO0SET = 1U << 20)
#define RS_OFF (IO0CLR = 1U << 20)
#define EN_ON (IO1SET = 1U << 25)
#define EN_OFF (IO1CLR = 1U << 25)
// The following variables are used in Up-Down and Ring Counter program
int contUP = 0;
int contDN = 99;
unsigned int rightSFT = 1U << 7;
unsigned int leftSFT = 1;
// The following variables are used in Matrix Key Program and Using matrix keys as selectors
unsigned char rowsel = 0, colsel = 0;
// Lookup table for the Matrix Program
unsigned char lookup_table[4][4] = {{'0', '1', '2', '3'},
{'4', '5', '6', '7'},
{'8', '9', 'a', 'b'},
{'c', 'd', 'e', 'f'}};
// LCD Declarations
static void delay_us(unsigned int count); // microsecond delay
static void LCD_SendCmdSignals(void);
static void LCD_SendDataSignals(void);
static void LCD_SendHigherNibble(unsigned char dataByte);
static void LCD_CmdWrite(unsigned char cmdByte);
static void LCD_DataWrite(unsigned char dataByte);
static void LCD_Reset(void);
static void LCD_Init(void);
void LCD_DisplayString(const char *ptr_stringPointer_u8);
void delay_ms(unsigned int j)
{
unsigned int x, i;
for (i = 0; i < j; i++)
{
for (x = 0; x < 10000; x++)
; /* loop to generate 1 milisecond delay with CCLK = 60MHz */
}
}
unsigned char programControl()
{
// SystemInit();
// uart_init(); // initialize UART0 port
IO0DIR |= 1U << 31 | 0x00FF0000; // to set P0.16 to P0.23 as o/ps
do
{
while (1)
{
// check for keypress in row0,make row0 '0',row1=row2=row3='1'
rowsel = 0;
IO0SET = 0X000F0000;
IO0CLR = 1 << 16;
if (COL0 == 0)
{
colsel = 0;
break;
};
if (COL1 == 0)
{
colsel = 1;
break;
};
if (COL2 == 0)
{
colsel = 2;
break;
};
if (COL3 == 0)
{
colsel = 3;
break;
};
// check for keypress in row1,make row1 '0'
rowsel = 1;
IO0SET = 0X000F0000;
IO0CLR = 1 << 17;
if (COL0 == 0)
{
colsel = 0;
break;
};
if (COL1 == 0)
{
colsel = 1;
break;
};
if (COL2 == 0)
{
colsel = 2;
break;
};
if (COL3 == 0)
{
colsel = 3;
break;
};
// check for keypress in row2,make row2 '0'
rowsel = 2;
IO0SET = 0X000F0000;
IO0CLR = 1 << 18; // make row2 '0'
if (COL0 == 0)
{
colsel = 0;
break;
};
if (COL1 == 0)
{
colsel = 1;
break;
};
if (COL2 == 0)
{
colsel = 2;
break;
};
if (COL3 == 0)
{
colsel = 3;
break;
};
// check for keypress in row3,make row3 '0'
rowsel = 3;
IO0SET = 0X000F0000;
IO0CLR = 1 << 19; // make row3 '0'
if (COL0 == 0)
{
colsel = 0;
break;
};
if (COL1 == 0)
{
colsel = 1;
break;
};
if (COL2 == 0)
{
colsel = 2;
break;
};
if (COL3 == 0)
{
colsel = 3;
break;
};
};
delay_ms(50); // allow for key debouncing
while (COL0 == 0 || COL1 == 0 || COL2 == 0 || COL3 == 0)
; // wait for key release
delay_ms(50); // allow for key debouncing
IO0SET = 0X000F0000; // disable all the rows
return lookup_table[rowsel][colsel]; // send to serial port(check on the terminal)
} while (1);
}
void reset_values(int y)
{
switch (y)
{
case 0:
contDN = 99;
rightSFT = 1U << 7;
leftSFT = 1;
break;
case 1:
contUP = 0;
rightSFT = 1U << 7;
leftSFT = 1;
break;
case 2:
contUP = 0;
contDN = 99;
rightSFT = 1U << 7;
break;
case 3:
contUP = 0;
contDN = 99;
leftSFT = 1;
break;
}
}
unsigned char getAlphaCode(unsigned char alphachar)
{
switch (alphachar)
{
// dp g f e d c b a - common anode: 0 segment on, 1 segment off
case '8':
return 0x00; // Switches on all the segments of one display along with decimal point.
case ' ':
return 0xff;
// simmilarly add for other digit/characters
default:
break;
}
return 0xff;
}
void alphadisp7SEG(char *buf)
{
unsigned char i, j;
unsigned char seg7_data, temp = 0;
for (i = 0; i < 5; i++) // because only 5 seven segment digits are present
{
seg7_data = getAlphaCode(*(buf + i)); // instead of this look up table can be used
// to shift the segment data(8bits)to the hardware (shift registers) using Data,Clock,Strobe
for (j = 0; j < 8; j++)
{
// get one bit of data for serial sending
temp = seg7_data & 0x80; // shift data from Most significan bit (D7)
if (temp == 0x80)
IOSET0 |= 1 << 19; // IOSET0 | 0x00080000;
else
IOCLR0 |= 1 << 19; // IOCLR0 | 0x00080000;
// send one clock pulse
IOSET0 |= 1 << 20; // IOSET0 | 0x00100000;
delay_ms(1);
IOCLR0 |= 1 << 20; // IOCLR0 | 0x00100000;
seg7_data = seg7_data << 1; // get next bit into D7 position
}
// Strobe Signal
IOSET0 |= 1 << 30; // IOSET0 | 0x40000000;
delay_ms(1); // nop();
IOCLR0 |= 1 << 30; // IOCLR0 | 0x40000000;
delay_ms(200);
}
return;
}
// System Initialization code
void SystemInit(void)
{
PLL0CON = 0x01;
PLL0CFG = 0x24;
PLL0FEED = 0xAA;
PLL0FEED = 0x55;
while (!(PLL0STAT & PLOCK))
{
;
}
PLL0CON = 0x03;
PLL0FEED = 0xAA; // lock the PLL registers after setting the required PLL
PLL0FEED = 0x55;
VPBDIV = 0x01; // PCLK is same as CCLK i.e 60Mhz
}
// Has updown and binary counter
int counterProgram()
{
IO0DIR = 0xFF << 16;
IO0SET = 0xFF << 16;
while (1)
{
if (!SW2)
{
reset_values(0);
IO0SET = 0xFF << 16;
IO0CLR = ((contUP / 10) << 4 | contUP % 10) << 16;
contUP++;
if (contUP > 99)
contUP = 0;
}
else if (!SW3)
{
reset_values(1);
IO0SET = 0xFF << 16;
IO0CLR = ((contDN / 10) << 4 | contDN % 10) << 16;
contDN--;
if (contDN < 0)
contDN = 99;
}
else if (!SW4)
{
reset_values(2);
IO0SET = 0xFF << 16;
IO0CLR = leftSFT << 16;
leftSFT <<= 1;
if (leftSFT > 0x01 << 7)
leftSFT = 0x01;
}
else if (!SW5)
{
reset_values(3);
IO0SET = 0xFF << 16;
IO0CLR = rightSFT << 16;
rightSFT >>= 1;
if (rightSFT < 0x01)
rightSFT = 0x01 << 7;
}
if (!SW6)
break;
delay_ms(200);
}
return 0;
}
// Has seven segment display test code
void sevenSegDisplay()
{
IO0DIR |= 1U << 31 | 1U << 19 | 1U << 20 | 1U << 30; // to set as o/ps
while (1)
{
alphadisp7SEG("88888");
delay_ms(300);
alphadisp7SEG(" ");
delay_ms(300);
if (!SW6)
break;
}
}
void stepperMotorTest()
{
unsigned int no_of_steps_clk = 200, no_of_steps_aclk = 200;
IO0DIR |= 1U << 31 | 0x00FF0000 | 1U << 30; // to set P0.16 to P0.23 as o/ps
SystemInit();
do
{
IO0CLR = 0X000F0000;
IO0SET = 0X00010000;
delay_ms(10);
if (--no_of_steps_clk == 0)
break;
IO0CLR = 0X000F0000;
IO0SET = 0X00020000;
delay_ms(10);
if (--no_of_steps_clk == 0)
break;
IO0CLR = 0X000F0000;
IO0SET = 0X00040000;
delay_ms(10);
if (--no_of_steps_clk == 0)
break;
IO0CLR = 0X000F0000;
IO0SET = 0X00080000;
delay_ms(10);
if (--no_of_steps_clk == 0)
break;
} while (1);
// n1 = n2;
do
{
IO0CLR = 0X000F0000;
IO0SET = 0X00080000;
delay_ms(10);
if (--no_of_steps_aclk == 0)
break;
IO0CLR = 0X000F0000;
IO0SET = 0X00040000;
delay_ms(10);
if (--no_of_steps_aclk == 0)
break;
IO0CLR = 0X000F0000;
IO0SET = 0X00020000;
delay_ms(10);
if (--no_of_steps_aclk == 0)
break;
IO0CLR = 0X000F0000;
IO0SET = 0X00010000;
delay_ms(10);
if (--no_of_steps_aclk == 0)
break;
} while (1);
IO0CLR = 0X00FF0000;
return;
}
static void LCD_CmdWrite(unsigned char cmdByte)
{
LCD_SendHigherNibble(cmdByte);
LCD_SendCmdSignals();
cmdByte = cmdByte << 4;
LCD_SendHigherNibble(cmdByte);
LCD_SendCmdSignals();
}
static void LCD_DataWrite(unsigned char dataByte)
{
LCD_SendHigherNibble(dataByte);
LCD_SendDataSignals();
dataByte = dataByte << 4;
LCD_SendHigherNibble(dataByte);
LCD_SendDataSignals();
}
static void LCD_Reset(void)
{
/* LCD reset sequence for 4-bit mode*/
LCD_SendHigherNibble(0x30);
LCD_SendCmdSignals();
delay_ms(100);
LCD_SendHigherNibble(0x30);
LCD_SendCmdSignals();
delay_us(200);
LCD_SendHigherNibble(0x30);
LCD_SendCmdSignals();
delay_us(200);
LCD_SendHigherNibble(0x20);
LCD_SendCmdSignals();
delay_us(200);
}
static void LCD_SendHigherNibble(unsigned char dataByte)
{
// send the D7,6,5,D4(uppernibble) to P0.16 to P0.19
IO0CLR = 0X000F0000;
IO0SET = ((dataByte >> 4) & 0x0f) << 16;
}
static void LCD_SendCmdSignals(void)
{
RS_OFF; // RS - 1
EN_ON;
delay_us(100);
EN_OFF; // EN - 1 then 0
}
static void LCD_SendDataSignals(void)
{
RS_ON; // RS - 1
EN_ON;
delay_us(100);
EN_OFF; // EN - 1 then 0
}
static void LCD_Init(void)
{
delay_ms(100);
LCD_Reset();
LCD_CmdWrite(0x28u); // Initialize the LCD for 4-bit 5x7 matrix type
LCD_CmdWrite(0x0Eu); // Display ON cursor ON
LCD_CmdWrite(0x01u); // Clear the LCD
LCD_CmdWrite(0x80u); // go to First line First Position
}
void LCD_DisplayString(const char *ptr_string)
{
// Loop through the string and display char by char
while ((*ptr_string) != 0)
LCD_DataWrite(*ptr_string++);
}
static void delay_us(unsigned int count)
{
unsigned int j = 0, i = 0;
for (j = 0; j < count; j++)
{
for (i = 0; i < 10; i++)
;
}
}
void lcdTest()
{
SystemInit();
IO0DIR |= 1U << 31 | 0x00FF0000; // to set P0.16 to P0.23 as o/ps
IO1DIR |= 1U << 25; // to set P1.25 as o/p used for EN
// make D7 Led on off for testing
LCD_Reset();
LCD_Init();
delay_ms(100);
LCD_CmdWrite(0x80);
LCD_DisplayString("RV College Of Engrng");
LCD_CmdWrite(0xc0);
LCD_DisplayString(" Computer Sciene");
LCD_CmdWrite(0x94);
LCD_DisplayString(" 4th Semester");
LCD_CmdWrite(0xD4);
LCD_DisplayString(" B Section");
while (1)
if(!SW6)
break;
}
int main()
{
while (1)
{
unsigned char test = programControl();
switch (test)
{
case '1':
counterProgram();
break;
case '2':
sevenSegDisplay();
break;
case '3':
stepperMotorTest();
break;
case '7':
lcdTest();
break;
default:
break;
}
if (test == 'f')
break;
}
return 0;
}