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2k18_code.c
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#include <msp430G2553.h>
/*-------------------------------------------------
TECHNITES 2k16
MSP430G2553
-----------------
3.3 V -->|Vcc Gnd |<-- Ground
| |
Unused -->|P1.0 P2.7|--> unused
| |
Rx -->|P1.1 P2.6|--> unused
| |
Tx <--|P1.2 TST |--> Open
| |
<--|P1.3 RST |<-- Pulled high
| |
SCLK_5916 <--|P1.4 P1.7|--> SIN_5916
| |
LTCH_5916 <--|P1.5 P1.6|--> unused
| |
<--|P2.0 P2.5|<-- unused
| |
<--|P2.1 P2.4|<--
| |
<--|P2.2 P2.3|<--
-----------------
-------------------------------------------------*/
//PIN 5916 PORT1
#define SIN5916 BIT7
#define SCLK5916 BIT4
#define LTCH5916 BIT5
#define N_channel 48
#define arr_size (N_channel/8)
void serial_println_8(char val)
{
while (!(IFG2&UCA0TXIFG)); // USCI_A0 TX buffer ready?
UCA0TXBUF = val;
}
char rx_count=0,strobe;
unsigned char disp_arr[arr_size]={0xFF,0x00,0xFF,0x00,0xFF,0x00};
void InitializeClocks(void);
void SendData(void);
void main(void)
{
char temp_disp,i;
WDTCTL = WDTPW + WDTHOLD;
//TLC initialization
P1DIR = 0;
P1DIR |= (SIN5916 + SCLK5916 + LTCH5916);
P1OUT=0;
P1SEL = BIT1 + BIT2 ; // P1.1 = RXD, P1.2=TXD
P1SEL2 = BIT1 + BIT2;
UCA0CTL1 |= UCSSEL_2; // SMCLK
UCA0BR0 = 104; // 1MHz 9600
UCA0BR1 = 0; // 1MHz 9600
UCA0MCTL = UCBRS2 + UCBRS0; // Modulation UCBRSx = 5
UCA0CTL1 &= ~UCSWRST; // **Initialize USCI state machine**
InitializeClocks(); // Setup clock
IE2 |= UCA0RXIE; // Enable USCI_A0 RX interrupt
_bis_SR_register(GIE);
while (1)
{
SendData();
P1OUT|=LTCH5916;
P1OUT&=~(LTCH5916);
if(strobe=='S')
{
rx_count=0;
serial_println_8('K');
strobe=0;
}
}
}
void SendData(void)
{
char i,temp;
P1OUT &= ~(SIN5916 + LTCH5916 + SCLK5916);
for (i = 0; i < arr_size; i++)
{
temp=disp_arr[i];
P1OUT&=~(SIN5916);
P1OUT|=SIN5916&temp;
P1OUT|=SCLK5916;
P1OUT&=~SCLK5916;
temp=temp<<1;
P1OUT&=~(SIN5916);
P1OUT|=SIN5916&temp;
P1OUT|=SCLK5916;
P1OUT&=~SCLK5916;
temp=temp<<1;
P1OUT&=~(SIN5916);
P1OUT|=SIN5916&temp;
P1OUT|=SCLK5916;
P1OUT&=~SCLK5916;
temp=temp<<1;
P1OUT&=~(SIN5916);
P1OUT|=SIN5916&temp;
P1OUT|=SCLK5916;
P1OUT&=~SCLK5916;
temp=temp<<1;
P1OUT&=~(SIN5916);
P1OUT|=SIN5916&temp;
P1OUT|=SCLK5916;
P1OUT&=~SCLK5916;
temp=temp<<1;
P1OUT&=~(SIN5916);
P1OUT|=SIN5916&temp;
P1OUT|=SCLK5916;
P1OUT&=~SCLK5916;
temp=temp<<1;
P1OUT&=~(SIN5916);
P1OUT|=SIN5916&temp;
P1OUT|=SCLK5916;
P1OUT&=~SCLK5916;
temp=temp<<1;
P1OUT&=~(SIN5916);
P1OUT|=SIN5916&temp;
P1OUT|=SCLK5916;
P1OUT&=~SCLK5916;
temp=temp<<1;
}
}
void InitializeClocks(void)
{
BCSCTL1 = CALBC1_1MHZ;
DCOCTL = CALDCO_1MHZ;
}
#pragma vector=USCIAB0RX_VECTOR
__interrupt void USCI0RX_ISR(void)
{
strobe= UCA0RXBUF; // TX -> RXed character
if(!(strobe=='S'))
{
if(rx_count<arr_size)
disp_arr[rx_count++]=strobe;
}
}