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blink.c
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blink.c
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#include <msp430.h>
#include <stdio.h>
#include <math.h>
#include <string.h>
#define SHORT 50
#define ANTSWINT 100
#define ANTSWEXT 101
//prototypes
void port_init(void);
void uart_init(void);
void setup_interrupts(void);
void initLCD(void);
void writecom(unsigned char d, unsigned char mode);
void write_string_to_LCD(char *strdata, unsigned char len);
void write_int_to_LCD(unsigned int x);
void write_float_to_LCD(float x);
void short_dly(unsigned long dly);
unsigned char light_pressed(void);
unsigned char ping_pressed(void);
void ping_reader(void);
void send_buffer(unsigned char num_bytes);
unsigned char antsw_pressed(void);
void toggle_antenna_switch(void);
void update_lcd_line2(void);
void enter_run_mode(void);
unsigned char run_pressed(void);
void exit_run_mode(void);
unsigned char stop_pressed(void);
unsigned char rfoff_pressed(void);
void turn_rf_off(void);
void read_block(void);
unsigned char rdblk_pressed(void);
void set_output_mode(void);
//globals
char keep_local;//if high, keep data returned to demo board (from reader) local instead of forwarding to host PC via USB. if low, send to host PC.
char big_buffer_tx[1000];
char big_buffer_rx[1000];
unsigned int rx_index;
unsigned char currentantswstate;
unsigned char currentbaudrate;
void single_slot_inventory();
unsigned char run_mode;
unsigned char blkaddr;
//**********************************************************************************
//USCI A0 Interrupt Handler - data from PC is sent to RFID2 module
#pragma vector=USCIAB0RX_VECTOR
__interrupt void USCI0RX_ISR_HOOK(void)
{
while (!(IFG2 & UCA1TXIFG)); // USCI_A1 TX buffer ready?
UCA1TXBUF = UCA0RXBUF; //receive byte from A0, send it to A1 (receive from USB, send to RFID)
}
//**********************************************************************************
//USCI A1 Interrupt Handler - data from RFID2 module is sent to USB interface)
#pragma vector=USCIAB1RX_VECTOR
__interrupt void USCI1RX_ISR_HOOK(void)
{
if(keep_local==1) //if high, keep data returned to demo board (from reader) local instead of forwarding to host PC via USB. if low, send to host PC.
{
big_buffer_rx[rx_index++] = UCA1RXBUF;
}
else//send to PC via USB
{
while (!(IFG2 & UCA0TXIFG)); // USCI_A0 TX buffer ready?
UCA0TXBUF = UCA1RXBUF; //receive byte from A1 and send to A0 (receive from RFID, send to USB)
}
}
//**********************************************************************************************
//**********************************************************************************************
//**********************************************************************************************
int main(void)
{
volatile unsigned char data, pos;
WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer
//if (CALBC1_12MHZ==0xFF || CALDCO_12MHZ == 0xFF)
// while(1); // If calibration constants erased do not load - trap CPU
BCSCTL1 = CALBC1_12MHZ; // Set DCO
DCOCTL = CALDCO_12MHZ;
//**********************************************
//DO NOT CHANGE THE ORDER OF THE FOLLOWING CODE!
port_init();
initLCD();
P4OUT |= BIT1; //LCD backlight on
writecom(0x01, 0);//mode=0 instruction/command, mode=1 data clear display
writecom(0x02, 0);//mode=0 instruction/command, mode=1 data position cursor home home
write_string_to_LCD("DLP Design ", 16);
writecom(0xC0, 0);//mode=0 instruction/command, mode=1 data position cursor to start of second row
write_string_to_LCD("DLP-RFID2 Demo ", 16);
keep_local=0;//if high, keep data returned to demo board (from reader) local instead of forwarding to host PC via USB. if low, send to host PC.
rx_index=0;//init the receive buffer index
run_mode=0;//disable inventories
blkaddr=0;
currentantswstate = ANTSWINT;//init to internal
/* Code showing how to use J2, "SEL" User Defined Jumper
//pullup resistor enabled for P6.7 in port_init();
data = P6IN; //read port 6
data = data & 0x80; //mask off other port bits
if(data>0) //if P6.7 is high (default)
*/
uart_init();
setup_interrupts();
//ping reader twice to sync and stop transmitting 'D's
short_dly(50000);//pause for remainder of packet
ping_reader();//ping for presence of reader and update display
short_dly(50000);//pause for remainder of packet
ping_reader();//ping for presence of reader and update display
short_dly(50000);//pause for remainder of packet
//**********************************************
set_output_mode();
for (;;)
{
if(light_pressed())
P4OUT ^= 0x02; //toggle P4.1
if(ping_pressed())
ping_reader();//ping for presence of reader and update display
if(antsw_pressed())
toggle_antenna_switch();//toggle between internal and external antenna
if(run_pressed())
enter_run_mode();//setup for reading UIDs and set run flag for continuous inventories
if(stop_pressed())
exit_run_mode();//setup for reading UIDs and set run flag for continuous inventories
if(rfoff_pressed())
turn_rf_off();
if(rdblk_pressed())
read_block();
if(run_mode==1)
single_slot_inventory();
}
}
//*******************************************************************************************************
void short_dly(unsigned long dly)
{
volatile unsigned long i; // volatile to prevent optimization
i = dly; // SW Delay
do i--;
while (i != 0);
}
//**************************************************************************************************
void ping_reader()//ping for presence of reader and update display
{
unsigned char pos;
writecom(0x02, 0);//mode=0 instruction/command, mode=1 data home
write_string_to_LCD(" ", 16);
for(pos=0; pos<240; pos++)
big_buffer_rx[pos]=0;
rx_index=0;//prepare receive index
keep_local=1;//if high, keep data returned to demo board (from reader) local instead of forwarding to host PC via USB. if low, send to host PC.
pos=0;
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x38;//8
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x33;//3
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x34;//4
big_buffer_tx[pos++] = 0x46;//F
big_buffer_tx[pos++] = 0x46;//F
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
send_buffer(pos);
short_dly(50000);//pause for remainder of packet
//while(rx_index< 30);
keep_local=0;//if high, keep data returned to demo board (from reader) local instead of forwarding to host PC via USB. if low, send to host PC.
//send received data to LCD display
writecom(0x02, 0);//mode=0 instruction/command, mode=1 data home
for(pos=18; pos<30; pos++)
writecom(big_buffer_rx[pos], 1);//mode=0 instruction/command, mode=1 data C
rx_index=0;//prepare receive index
update_lcd_line2();//show line 2
}
//**************************************************************************************************
void turn_rf_off()
{
unsigned char pos;
rx_index=0;//prepare receive index
keep_local=1;//if high, keep data returned to demo board (from reader) local instead of forwarding to host PC via USB. if low, send to host PC.
pos=0;
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x41;//A
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x33;//3
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x34;//4
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
send_buffer(pos);
while(rx_index< 15);
short_dly(20000);
keep_local=0;//if high, keep data returned to demo board (from reader) local instead of forwarding to host PC via USB. if low, send to host PC.
rx_index=0;//prepare receive index
}
//**************************************************************************************************
void toggle_antenna_switch()//toggle between internal and external antenna
{
unsigned char pos;
if(currentantswstate == ANTSWINT)
currentantswstate = ANTSWEXT;
else
currentantswstate = ANTSWINT;
rx_index=0;//prepare receive index
keep_local=1;//if high, keep data returned to demo board (from reader) local instead of forwarding to host PC via USB. if low, send to host PC.
pos=0;
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x38;//8
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x33;//3
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x34;//4
big_buffer_tx[pos++] = 0x32;//2
if(currentantswstate == ANTSWINT)
big_buffer_tx[pos++] = 0x41;//A Internal antenna
else
big_buffer_tx[pos++] = 0x42;//B External antenna
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
send_buffer(pos);
while(rx_index< 15);
short_dly(20000);
keep_local=0;//if high, keep data returned to demo board (from reader) local instead of forwarding to host PC via USB. if low, send to host PC.
rx_index=0;//prepare receive index
update_lcd_line2();//show line 2
}
//**************************************************************************************************
void enter_run_mode()//setup for reading UIDs and set run flag for continuous inventories
{
run_mode=1;
}
//**************************************************************************************************
void exit_run_mode()//setup for reading UIDs and set run flag for continuous inventories
{
run_mode=0;
}
//**************************************************************************************************
void read_block()
{
unsigned char pos, index;
unsigned char uid_buf[20];
rx_index=0;//prepare receive index
keep_local=1;//if high, keep data returned to demo board (from reader) local instead of forwarding to host PC via USB. if low, send to host PC.
//send write request
//set up for reading UIDs
pos=0;
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x43;//C
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x33;//3
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x34;//4
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x32;//2
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0 read user memory blocks
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
send_buffer(pos);
while(rx_index< 10);
short_dly(20000);
rx_index=0;//ignore return data
for(pos=0; pos<200; pos++)
big_buffer_rx[pos]=0;
//send AGC Toggle
pos=0;
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x39;//9
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x33;//3
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x34;//4
big_buffer_tx[pos++] = 0x46;//F
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
send_buffer(pos);
while(rx_index< 12);
short_dly(20000);
rx_index=0;//ignore return data
for(pos=0; pos<200; pos++)
big_buffer_rx[pos]=0;
//send AM/PM toggle
pos=0;
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x39;//9
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x33;//3
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x34;//4
big_buffer_tx[pos++] = 0x46;//F
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x46;//F
big_buffer_tx[pos++] = 0x46;//F
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
send_buffer(pos);
while(rx_index< 12);
short_dly(9000);
rx_index=0;//ignore return data
while(rx_index>0)
{
rx_index=0;//ignore return data
short_dly(9000);
}
for(pos=0; pos<200; pos++)
big_buffer_rx[pos]=0;
//build and send the Read block command
pos=0;
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x42;//B
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x33;//3
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x34;//4
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x38;//8
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x32;//2
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//addr msb
big_buffer_tx[pos++] = 0x30+blkaddr;//addr lsb
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
send_buffer(pos);
while(rx_index< 12);
short_dly(30000);
writecom(0x02, 0);//mode=0 instruction/command, mode=1 data home
if(rx_index < 41) //if empty packet [] or multiple tags in fiend
{
write_string_to_LCD("NO TAG FOUND ", 16);
}
else
{
index=48;
for(pos=0; pos<8; pos+=2)
{
uid_buf[pos] = big_buffer_rx[index];
uid_buf[pos+1] = big_buffer_rx[index+1];
index-=2;
}
writecom(0x02, 0);//mode=0 instruction/command, mode=1 data home
write_string_to_LCD(" ", 16);
writecom(0x02, 0);//mode=0 instruction/command, mode=1 data home
write_string_to_LCD("BLK ", 4);
write_int_to_LCD(blkaddr);
write_string_to_LCD(": ", 2);
//send received data to LCD display
for(pos=0; pos<8; pos++)
writecom(uid_buf[pos], 1);//mode=0 instruction/command, mode=1 data C
}
blkaddr++;
if(blkaddr>7) blkaddr=0;
keep_local=0;//if high, keep data returned to demo board (from reader) local instead of forwarding to host PC via USB. if low, send to host PC.
rx_index=0;//prepare receive index
update_lcd_line2();//show line 2
}
//**************************************************************************************************
void single_slot_inventory()//setup for reading UIDs and set run flag for continuous inventories
{
unsigned char pos, index;
unsigned char uid_buf[20];
//writecom(0x02, 0);//mode=0 instruction/command, mode=1 data home
//write_string_to_LCD("run mode... ", 16);
rx_index=0;//prepare receive index
keep_local=1;//if high, keep data returned to demo board (from reader) local instead of forwarding to host PC via USB. if low, send to host PC.
//send write request
//set up for reading UIDs
pos=0;
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x43;//C
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x33;//3
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x34;//4
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x32;//2
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x32;//2 read UIDs
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
send_buffer(pos);
while(rx_index< 10);
short_dly(20000);
rx_index=0;//ignore return data
for(pos=0; pos<200; pos++)
big_buffer_rx[pos]=0;
//send AGC Toggle
pos=0;
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x39;//9
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x33;//3
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x34;//4
big_buffer_tx[pos++] = 0x46;//F
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
send_buffer(pos);
while(rx_index< 12);
short_dly(20000);
rx_index=0;//ignore return data
for(pos=0; pos<200; pos++)
big_buffer_rx[pos]=0;
//send AM/PM toggle
pos=0;
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x39;//9
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x33;//3
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x34;//4
big_buffer_tx[pos++] = 0x46;//F
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x46;//F
big_buffer_tx[pos++] = 0x46;//F
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
send_buffer(pos);
while(rx_index< 12);
short_dly(9000);
rx_index=0;//ignore return data
while(rx_index>0)
{
rx_index=0;//ignore return data
short_dly(9000);
}
for(pos=0; pos<200; pos++)
big_buffer_rx[pos]=0;
//send single slot inventory request
pos=0;
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x38;//8
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x33;//3
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x34;//4
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x34;//4
big_buffer_tx[pos++] = 0x32;//2
big_buffer_tx[pos++] = 0x36;//6
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x31;//1
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
big_buffer_tx[pos++] = 0x30;//0
send_buffer(pos);
while(rx_index < 52);//wait for inventory results
short_dly(9000);//pause for remainder of packet
writecom(0x02, 0);//mode=0 instruction/command, mode=1 data home
if(rx_index < 62) //if empty packet [] or multiple tags in fiend
{
write_string_to_LCD("NO TAG FOUND ", 16);
}
else
{
index=65;
for(pos=0; pos<16; pos+=2)
{
uid_buf[pos] = big_buffer_rx[index];
uid_buf[pos+1] = big_buffer_rx[index+1];
index-=2;
}
//send received data to LCD display
for(pos=0; pos<16; pos++)
writecom(uid_buf[pos], 1);//mode=0 instruction/command, mode=1 data C
}
keep_local=0;//if high, keep data returned to demo board (from reader) local instead of forwarding to host PC via USB. if low, send to host PC.
rx_index=0;//prepare receive index
update_lcd_line2();//show line 2
}
//**************************************************************************************************
void update_lcd_line2()//show line 2
{
//B:115200 ANT:INT
writecom(0xC0, 0);//mode=0 instruction/command, mode=1 data position cursor to start of second row
write_string_to_LCD("B:115200 ", 16);
writecom(0xC9, 0);//mode=0 instruction/command, mode=1 data set position on second row
if(currentantswstate == ANTSWINT)//internal
write_string_to_LCD("ANT:INT", 7);
else
write_string_to_LCD("ANT:EXT", 7);
}
//**************************************************************************************************
unsigned char antsw_pressed()
{
unsigned char data;
data = P5IN; //read port 5
data &= 0x08; //mask off other port bits
if(!data)//if P5.3 is low then button is pressed
{
while(!data)//wait for button release
{
data = P5IN; //read port
data &= 0x08; //mask off other port bits
}
return 1;
}
return 0;//button not pressed
}
//**************************************************************************************************
unsigned char stop_pressed()
{
unsigned char data;
data = P5IN; //read port 5
data &= 0x01; //mask off other port bits
if(!data)//if P5.0 is low then button is pressed
{
while(!data)//wait for button release
{
data = P5IN; //read port
data &= 0x01; //mask off other port bits
}
return 1;
}
return 0;//button not pressed
}
//**************************************************************************************************
unsigned char rdblk_pressed()
{
unsigned char data;
data = P5IN; //read port 5
data &= 0x10; //mask off other port bits
if(!data)//if P5.4 is low then button is pressed
{
while(!data)//wait for button release
{
data = P5IN; //read port
data &= 0x10; //mask off other port bits
}
return 1;
}
return 0;//button not pressed
}
//**************************************************************************************************
unsigned char rfoff_pressed()
{
unsigned char data;
data = P5IN; //read port 5
data &= 0x02; //mask off other port bits
if(!data)//if P5.1 is low then button is pressed
{
while(!data)//wait for button release
{
data = P5IN; //read port
data &= 0x02; //mask off other port bits
}
return 1;
}
return 0;//button not pressed
}
//**************************************************************************************************
unsigned char run_pressed()
{
unsigned char data;
data = P4IN; //read port 4
data &= 0x80; //mask off other port bits
if(!data)//if P4.7 is low then button is pressed
{
while(!data)//wait for button release
{
data = P4IN; //read port
data &= 0x80; //mask off other port bits
}
return 1;
}
return 0;//button not pressed
}
//**************************************************************************************************
unsigned char light_pressed()
{
unsigned char data;
data = P5IN; //read port 5
data &= 0x20; //mask off other port bits
if(!data)//if P5.5 is low then button is pressed
{
while(!data)//wait for button release
{
data = P5IN; //read port
data &= 0x20; //mask off other port bits
}
return 1;
}
return 0;//button not pressed
}
//**************************************************************************************************
unsigned char ping_pressed()
{
unsigned char data;
data = P5IN; //read port 5
data &= 0x40; //mask off other port bits
if(!data)//if P5.6 is low then button is pressed
{
while(!data)//wait for button release
{
data = P5IN; //read port
data &= 0x40; //mask off other port bits
}
return 1;
}
return 0;//button not pressed
}
//********************************************************************************************************
void setup_interrupts()
{
/*
* IFG2, Interrupt Flag Register 2
*
* ~UCB0TXIFG -- No interrupt pending
* ~UCB0RXIFG -- No interrupt pending
* ~UCA0TXIFG -- No interrupt pending
* UCA0RXIFG -- Interrupt pending
*
* Note: ~<BIT> indicates that <BIT> has value zero
*/
IFG2 &= ~(UCA0RXIFG);
/*
* IE2, Interrupt Enable Register 2
*
* ~UCB0TXIE -- Interrupt disabled
* ~UCB0RXIE -- Interrupt disabled
* ~UCA0TXIE -- Interrupt disabled
* UCA0RXIE -- Interrupt enabled
*
* Note: ~<BIT> indicates that <BIT> has value zero
*/
IE2 |= UCA0RXIE;
/*
* SR, Status Register
*
* ~SCG1 -- Disable System clock generator 1
* ~SCG0 -- Disable System clock generator 0
* ~OSCOFF -- Oscillator On
* ~CPUOFF -- CPU On
* GIE -- General interrupt enable
*
* Note: ~<BIT> indicates that <BIT> has value zero
*/
__bis_SR_register(GIE);
}
//********************************************************************************************************
void port_init()
{
/* Port 1 Output Register */
P1OUT = 0;
/* Port 1 Direction Register */
P1DIR = BIT0 + BIT1 + BIT2 + BIT3 + BIT4 + BIT5 + BIT6 + BIT7;
/* Port 1 Interrupt Edge Select Register */
P1IES = 0;
/* Port 1 Interrupt Flag Register */
P1IFG = 0;
/* Port 2 Output Register */
P2OUT = 0;
/* Port 2 Direction Register */
P2DIR = BIT0 + BIT1 + BIT2 + BIT3 + BIT4 + BIT5 + BIT6 + BIT7;
/* Port 2 Interrupt Edge Select Register */
P2IES = 0;
/* Port 2 Interrupt Flag Register */
P2IFG = 0;
/* Port 3 Output Register */
P3OUT = 0;
/* Port 3 Port Select Register */
P3SEL = BIT4 + BIT5 + BIT6 + BIT7;
/* Port 3 Direction Register */
P3DIR = BIT0 + BIT1 + BIT2 + BIT3;
/* Port 4 Output Register */
P4OUT = 0;
/* Port 4 Direction Register */
P4DIR = BIT0 + BIT1 + BIT2 + BIT3 + BIT4 + BIT5 + BIT6;
/* Port 5 Output Register */
P5OUT = 0;
/* Port 5 Direction Register */
P5DIR = BIT7;
/* Port 6 Output Register */
P6OUT = 0;
/* Port 6 Direction Register */
P6DIR = BIT0 + BIT1 + BIT2 + BIT3 + BIT4 + BIT5 + BIT6;
//pull P6.7 high using internal pullup resistor
P6DIR &= ~BIT7;
P6OUT |= BIT7;//set internal resistor to pull up
P6REN |= BIT7;//enable pullup resistor
}
//***************************************************************************
void initLCD()
{
short_dly(SHORT);
writecom(0x30,0); //wake up
short_dly(SHORT);
writecom(0x30,0); //wake up
short_dly(SHORT);
writecom(0x30,0); //wake up
short_dly(SHORT);
writecom(0x39,0); //function set
short_dly(SHORT);
writecom(0x14,0); //internal osc frequency
short_dly(SHORT);
writecom(0x56,0); //power control
short_dly(SHORT);
writecom(0x6D,0); //follower control