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PKS's code.
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Shashi Gowda committed Oct 22, 2012
1 parent 748f702 commit 0480503
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#include <msp430F1611.h>
/*------]]]]-------------------------------------------
MSP430G2553
-----------------
3.3 V -->|Vcc Gnd |<-- Ground
| |
Unused -->|P2.0 P2.7|--> Unused
| |
Rx -->|P2.1 P2.6|--> Unused
| |
Tx <--|P2.2 TST |--> Open
| |
BLANK <--|P2.3 RST |<-- Pulled high
| |
GSLK <--|P2.4 P2.7|--> SIN
| |
SCLK <--|P2.5 P2.6|--> XLAT
| |
sin_595 <--|P2.0 P2.5|<-- Button6
| |
sclk_595 <--|P2.1 P2.4|<-- Button5
| |
latch_595 <--|P2.2 P2.3|<-- Button4
-----------------
-------------------------------------------------*/


#define SIN BIT7
#define GSCLK BIT4
#define XLAT BIT6
#define BLANK BIT3
#define SCLK BIT5
#define TX BIT2

#define SIN595 BIT0
#define SCLK595 BIT1
#define LTCH595 BIT2

#define N_col 16
#define N_row 8
#define N_layer 8
#define N_level_bits 2 //0,25%,50%,100%
#define arr_collsize N_col*N_level_bits/8
//flag defines
#define COL_written 0x01
#define MAT_written 0x02
#define RX_occured 0x04


unsigned char strobe=0;
char stat_read=0;
char rx_x=0,rx_y=0;
char button_stat=0x00;//button status variable reset on reading 'K'
/*
void conv_ascii(int val,char *asc_val)//function to convert in to a set of ascii char to be read by >> in Cpp program(max val=1024)
{
int i=0;
for(i=0;val>=1000;i++)
val-=1000;
asc_val[0]=(char)(i+48);
for(i=0;val>=100;i++)
val-=100;
asc_val[1]=(char)(i+48);
for(i=0;val>=10;i++)
val-=10;
asc_val[2]=(char)(i+48);
for(i=0;val>=1;i++)
val-=1;
asc_val[3]=(char)(i+48);
}
void serial_println_8(char val)
{
while (!(IFG2&UCA0TXIFG)); // USCI_A0 TX buffer ready?
UCA0TXBUF = val;
while (!(IFG2&UCA0TXIFG)); // USCI_A0 TX buffer ready?
UCA0TXBUF = '\r';
while (!(IFG2&UCA0TXIFG)); // USCI_A0 TX buffer ready?
UCA0TXBUF = '\n';
}
*/

#define CLOCK_PERIOD 4 //time period for a PWM pulse
int PWMCount = 0; // Counter for GSCLK pulse
char rx_temp;
unsigned char disp_arr[N_layer][2][N_row];
unsigned char flag=0;
void ConfigureTimer(void);
void InitializeClocks(void);
void SendData(char col_no);

void main(void)

{
WDTCTL = WDTPW + WDTHOLD;
char i=0,j=0,rx_i=0,rx_j=0,layer_no,row_no=0;
rx_temp=0;
flag=0;

for(j=0;j<N_layer;++j)
for(i=0;i<arr_collsize;++i)
{disp_arr[j][i][0]=0xFF;
disp_arr[j][i][1]=0xAA;
disp_arr[j][i][2]=0x55;
disp_arr[j][i][3]=0x00;
disp_arr[j][i][4]=0xFF;
disp_arr[j][i][5]=0xAA;
disp_arr[j][i][6]=0x55;
disp_arr[j][i][7]=0x00;

}

P1DIR=0xFF;
P1OUT=0xFF;
//TLC initialization
P2DIR = 0;
P2DIR |= (SIN + SCLK + XLAT + BLANK + GSCLK);
P2OUT = (SIN + SCLK + XLAT + BLANK + GSCLK);
P2OUT=0;


//Shift 595 initialization
P2DIR |= (SIN595 + SCLK595 + LTCH595);
P2OUT = 0;
//UART

P3DIR= 0X40;
P3SEL |= 0xC0; // P3.6,7 = USART1 TXD/RXD
ME2 |= UTXE1 + URXE1; // Enable USART1 TXD/RXD
UCTL1 |= CHAR; // 8-bit character
UTCTL1 |= SSEL0; // UCLK = smCLK
UBR01 = 0x03; // 32k/9600 - 3.41
UBR11 = 0x00; //
UMCTL1 = 0x4A; // Modulation
UCTL1 &= ~SWRST; // Initialize USART state machine
IE2 |= URXIE1; // Enable USART1 RX interrupt

//SendData(0); // Clear all output
InitializeClocks(); // Setup clock
ConfigureTimer(); // Setup Timer to generate GSCLK
// IE2 |= UCA0RXIE; // Enable USCI_A0 RX interrupt
_bis_SR_register(GIE);
while (1)
{//for(i=0;i<wave_delay;++i)
P1OUT=~(1<<layer_no);
for(layer_no=0;layer_no<N_layer;layer_no++)
{
SendData(layer_no); // Send current Step data to TLC5940
_bis_SR_register(LPM0_bits + GIE); // Enter LPM0, enable interrupts
P1OUT=~(1<<layer_no);
}
//PUT MODS HERE
/*
if(strobe=='D')
{
rx_x=4;
rx_y=32;
serial_println_8('Z');
strobe=0;}
if(strobe=='S')
{
rx_x=0;
rx_y=0;
serial_println_8('K');
strobe=0;
}
}
*/
// _delay_cycles(100000);
/*
for(j=0;j<N_layer;++j)
for(i=0;i<arr_collsize;++i)
{rx_temp=disp_arr[j][i][0];
disp_arr[j][i][0]=disp_arr[j][i][1];
disp_arr[j][i][1]=disp_arr[j][i][2];
disp_arr[j][i][2]=disp_arr[j][i][3];
disp_arr[j][i][3]=disp_arr[j][i][4];
disp_arr[j][i][4]=disp_arr[j][i][5];
disp_arr[j][i][5]=disp_arr[j][i][6];
disp_arr[j][i][6]=disp_arr[j][i][7];
disp_arr[j][i][7]=rx_temp;
}*/
}
}


void SendData(char layer)
{
char i=0,temp,col_no=0;
P2OUT &= ~(SCLK + XLAT + BLANK);
for(col_no=0;col_no<8;++col_no)
for (i = 0; i < N_row; i++)
{ // Send data for each channel, CH15 first
temp=((disp_arr[layer][col_no>>2][i])<<((col_no&0x03)<<1));
P2OUT&=~(SIN);
P2OUT|=SCLK; //11
P2OUT&=~(SCLK);
P2OUT|=SCLK; //10
P2OUT&=~(SCLK);
P2OUT|=SCLK; //9
P2OUT&=~(SCLK);
P2OUT|=SCLK; //8
P2OUT&=~(SCLK);
P2OUT|=SCLK; //7
P2OUT&=~(SCLK);
P2OUT|=SCLK; //6
P2OUT&=~(SCLK);
P2OUT|=SCLK; //5
P2OUT&=~(SCLK);
P2OUT|=SCLK; //4
P2OUT&=~(SCLK);//8th bit onwards
P2OUT|=SCLK; //3
P2OUT&=~(SCLK); // Send duty bits, 12-bit, MSB first
P2OUT|=SCLK; //2
P2OUT&=~(SCLK);
P2OUT|=SIN&temp;
P2OUT|=SCLK; //1
P2OUT&=~(SCLK);
// P2OUT|=SIN; //test high
P2OUT&=~(SIN);
P2OUT|=SIN&(temp<<1);
// P2OUT|=SIN; //test high
P2OUT|=SCLK; //0
P2OUT&=~(SCLK);
}
flag|=COL_written;
}

void InitializeClocks(void)
{
;//BCSCTL1|= RSEL0+RSEL1+RSEL2;
//DCOCTL|= DCO0+DCO1+DCO2;
}

void ConfigureTimer(void)
{
TACTL = TASSEL_2 | MC_0 | TACLR; // TACLK = SMCLK, Up mode, reset count
TACCR0 = 80; // Timer Frequency
// TACCTL0 = CCIE; // Trigger Interrupt whenever Timer reach TACCR0
TACTL = TASSEL_2 | MC_1+TAIE; // TACLK = SMCLK, Up mode
}


#pragma vector=TIMER0_A1_VECTOR
__interrupt void Timer_A1(void)
{
// Pulse GSCLK
P2OUT |= GSCLK;
P2OUT &= ~GSCLK;
// pulse BLANK to restart PWM cycle when GSCLK pulse reach max count
if (++PWMCount >= CLOCK_PERIOD)
{
if(flag&COL_written)
{P2OUT |= BLANK;
P2OUT |= XLAT;
P2OUT &= ~(XLAT);
P2OUT &= ~(BLANK);
P2OUT |= SCLK;
P2OUT &= ~SCLK;
flag&=~(COL_written);
_bic_SR_register_on_exit(LPM0_bits);}
else
{P2OUT |= BLANK;
P2OUT &= ~(BLANK);}
PWMCount = 0;
}
TA0CTL &= ~TAIFG;
}
/*
void send_uart(char command)
{
while (!(IFG2 & UTXIFG1)); // USART1 TX buffer ready?
TXBUF1 = command; // command to TXBUF0
}
void recieve()
{ send_uart('0');
stat_read=0;
_BIS_SR(CPUOFF + GIE); // Enter LPM3 w/ interrupt
}
*/


#pragma vector=USART1RX_VECTOR
__interrupt void usart1_rx (void)
{ flag=0;
stat_read=RXBUF1;
__bic_SR_register_on_exit(CPUOFF);
}

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