// Receive a string from the USB serial port. The string is stored
// in the buffer and this function will not exceed the buffer size.
// A carriage return or newline completes the string, and is not
// stored into the buffer.
// The return value is the number of characters received, or 255 if
// the virtual serial connection was closed while waiting.
//
uint8_t recv_str(char *buf, uint8_t size)
{
int16_t r;
uint8_t count=0;
while (count < size) {
r = usb_serial_getchar();
if (r != -1) {
if (r == '\r' || r == '\n') return count;
if (r >= ' ' && r <= '~') {
*buf++ = r;
usb_serial_putchar(r);
count++;
}
} else {
if (!usb_configured() ||
!(usb_serial_get_control() & USB_SERIAL_DTR)) {
// user no longer connected
return 255;
}
// just a normal timeout, keep waiting
}
}
return count;
}
int16_t VncServerGetData(uint8_t * buffer, uint16_t maxsize)
{
uint16_t size = 0;
if(lastControlState != usb_serial_get_control())
{
lastControlState = usb_serial_get_control();
if(usb_serial_get_control() & USB_SERIAL_DTR)
usb_serial_set_control(USB_SERIAL_DSR);
else
usb_serial_set_control(0);
// return error if a disconnect from the VNC server is detected
if(lastControlState == 0)
return -1;
}
while(debugcounter > 64)
{
DDRF |= (1 << 0);
PORTF |= (1 << 0);
debugcounter -= 64;
PORTF &= ~(1 << 0);
}
while ( size < maxsize )
{
int n = usb_serial_getchar();
if(n < 0)
break;
buffer[size++] = (uint8_t)n;
debugcounter++;
}
return size;
}
// Basic command interpreter for controlling port pins
int main(void)
{
char buf[32];
uint8_t n;
// set for 16 MHz clock, and turn on the LED
CPU_PRESCALE(0);
LED_CONFIG;
LED_ON;
// initialize the USB, and then wait for the host
// to set configuration. If the Teensy is powered
// without a PC connected to the USB port, this
// will wait forever.
usb_init();
while (!usb_configured()) /* wait */ ;
_delay_ms(1000);
while (1) {
// wait for the user to run their terminal emulator program
// which sets DTR to indicate it is ready to receive.
while (!(usb_serial_get_control() & USB_SERIAL_DTR)) /* wait */ ;
// discard anything that was received prior. Sometimes the
// operating system or other software will send a modem
// "AT command", which can still be buffered.
usb_serial_flush_input();
// print a nice welcome message
send_str(PSTR("\r\nTeensy USB Serial Example, "
"Simple Pin Control Shell\r\n\r\n"
"Example Commands\r\n"
" B0? Read Port B, pin 0\r\n"
" C2=0 Write Port C, pin 1 LOW\r\n"
" D6=1 Write Port D, pin 6 HIGH (D6 is LED pin)\r\n\r\n"));
// and then listen for commands and process them
while (1) {
usb_serial
send_str(PSTR("> "));
n = recv_str(buf, sizeof(buf));
if (n == 255) break;
send_str(PSTR("\r\n"));
parse_and_execute_command(buf, n);
}
}
}
//function call from main,
void usb_terminal(uint16_t *events, uint8_t *state)
{
if (usb_configured() &
usb_serial_get_control() &
USB_SERIAL_DTR){ //only initiate usage of serial terminal if
//PC is connected and ready to receive.
usb_serial_flush_input(); //discard anything received prior
get_inputs(events); //get snapshot of events
send_str(PSTR("\r\nSupervisory Computer Serial"
"Terminal Interface\r\n\r\n"
"state : print current vehicle state\r\n"
"event=HV_UP : set event to HV_UP\r\n"));
}
}
/**
* Main - Run the main program which prints the system time and flashes the LEDs
* if certain conditions are met
*/
int main() {
// Setup the hardware
set_clock_speed(CPU_8MHz);
init_hardware();
// Wait until the 'debugger' is attached...
draw_centred(17, "Waiting for");
draw_centred(24, "debugger...");
show_screen();
while(!usb_configured() || !usb_serial_get_control());
send_debug_string("Debugger initialised. Debugging strings will appear below:");
// Run the main loop displaying the system time @ ~10Hz...
char buff[BUFF_LENGTH];
unsigned long count = 0;
send_debug_string("Entering main loop...");
while (1) {
// Draw the current system time on the screen
clear_screen();
sprintf(buff, "%7.4f", get_system_time());
draw_centred(21, buff);
if (count < 1) { send_debug_string("Calling show_screen()..."); }
show_screen();
if (count < 1) { send_debug_string("Finished show_screen()."); }
_delay_ms(100);
// Toggle LEDs if the conditions are met
if ((count % 25) == 0) {
PORTB ^= (1 << PB2);
send_debug_string("LED0 was toggled.");
}
if ((count % 50) == 10) {
PORTB ^= (1 << PB3);
send_debug_string("LED1 was toggled.");
}
// Increment the loop count
count++;
enter_breakpoint(99);
}
// We'll never get here...
return 0;
}
int main(void)
{
Randomizer randomizer;
// set for 16 MHz clock, and turn on the LED
CPU_PRESCALE(0);
LED_CONFIG;
LED_ON;
// initialize the USB, and then wait for the host
// to set configuration. If the Teensy is powered
// without a PC connected to the USB port, this
// will wait forever.
usb_init();
while (!usb_configured()) /* wait */ ;
_delay_ms(1000);
while (1) {
// wait for the user to run their terminal emulator program
// which sets DTR to indicate it is ready to receive.
while (!(usb_serial_get_control() & USB_SERIAL_DTR)) /* wait */ ;
// discard anything that was received prior. Sometimes the
// operating system or other software will send a modem
// "AT command", which can still be buffered.
usb_serial_flush_input();
//Get 128 bits of debiased entropy from the ADCs (using Von Neumann debias)
//and add that entropy to the randomizer (cryptographic entropy mixer).
//Repeat 4 times.
for(int i=0; i<4; i++){
randomizer.add(Entropy::get_entropy());
}
//Get cryptographically mixed and decorrelated random data from the randomizer
RandomData random_data = randomizer.get();
for(int i=0; i<16; i++){
//Send the random data over the USB serial device
usb_serial_putchar(random_data.bytes[i]);
}
LED_TOGGLE;
}
}
/**
* Main - Run through the steps of configuring, greeting, getting a name, thanking,
* and then quitting
*/
int main(void) {
char buff[BUFF_LENGTH];
// Setup the hardware
init_hardware();
// Wait until the USB port is configured and ready to go
draw_centred(17, "Waiting for");
draw_centred(24, "computer...");
show_screen();
while (!usb_configured() || !usb_serial_get_control());
// Prompt the user for their name, and wait until they enter it
clear_screen();
draw_centred(17, "Waiting for");
draw_centred(24, "username...");
show_screen();
send_line("Hello!");
send_line("Could you please tell me your name:");
recv_line(buff, BUFF_LENGTH);
usb_serial_putchar('\n');
// Display their name on the Teensy and prompt them to exit
char buff2[BUFF_LENGTH + 8];
sprintf(buff2, "Thanks %s!", buff);
clear_screen();
draw_centred(21, buff2);
show_screen();
send_line("Press 'q' to exit...");
while (usb_serial_getchar() != 'q');
// Display the finished information
clear_screen();
draw_centred(21, "Goodbye!");
show_screen();
send_line("\r");
send_line("Done! Goodbye!");
while (1);
// We'll never get here...
return 0;
}
// Basic command interpreter for controlling port pins
int main(void)
{
int16_t adc_result;
char adc_result_str[10];
// set for 16 MHz clock, and turn on the LED
CPU_PRESCALE(0);
LED_CONFIG;
// Set PF0 as input for ADC
DDRF &= ~(1 << 0);
// initialize the USB, and then wait for the host
// to set configuration. If the Teensy is powered
// without a PC connected to the USB port, this
// will wait forever.
usb_init();
while (!usb_configured()) /* wait */ ;
_delay_ms(1000);
while (1) {
// wait for the user to run their terminal emulator program
// which sets DTR to indicate it is ready to receive.
while (!(usb_serial_get_control() & USB_SERIAL_DTR)) /* wait */ ;
// discard anything that was received prior. Sometimes the
// operating system or other software will send a modem
// "AT command", which can still be buffered.
usb_serial_flush_input();
adc_result = adc_read(0); // Read ADC pin 0
sprintf(adc_result_str, "ADC: %d ", adc_result);
usb_serial_write(adc_result_str, 9);
_delay_ms(100);
}
}
// Basic command interpreter for controlling port pins
int main(void) {
char buf[64];
uint8_t n;
// set for 16 MHz clock, and turn on the LED
CPU_PRESCALE(0);
LED_CONFIG;
LED_ON;
// initialize the USB, and then wait for the host
// to set configuration. If the Teensy is powered
// without a PC connected to the USB port, this
// will wait forever.
usb_init();
while (!usb_configured()) /* wait */ ;
_delay_ms(1000);
while (1) {
// wait for the user to run their terminal emulator program
// which sets DTR to indicate it is ready to receive.
while (!(usb_serial_get_control() & USB_SERIAL_DTR)) /* wait */ ;
// discard anything that was received prior. Sometimes the
// operating system or other software will send a modem
// "AT command", which can still be buffered.
// usb_serial_flush_input();
// and then listen for commands and process them
while (1) {
// send_str(PSTR("> "));
n = recv_str(buf, sizeof(buf));
if (n == 255) break;
// send_str(PSTR("\r\n"));
parse(buf);
}
}
}
// Basic command interpreter for controlling port pins
int main(void)
{
char rx_buf[8];// the buffer to store received characters
uint8_t n = 0; // to store the number of bytes read from the serial port
uint8_t counter = 0; //keep count of the number of cycles in the while loop
// coordinates of the middle of the screen
int x=LCD_X/2;
int y=LCD_Y/2;
//set clock speed to 8MhZ
set_clock_speed(CPU_8MHz);
//initialise LCD and ports
Init();
// initialize the USB, and then wait for the host
// to set configuration. If the Teensy is powered
// without a PC connected to the USB port, this
// will wait forever.
usb_init();
while (!usb_configured()) /* wait */ ;
_delay_ms(1000);
//keep looping until the character 'q' is received
while (rx_buf[0]!='q') {
counter++;
// wait for the user to run their terminal emulator program
// which sets DTR to indicate it is ready to receive.
while (!(usb_serial_get_control() & USB_SERIAL_DTR)) /* wait */ ;
// discard anything that was received prior. Sometimes the
// operating system or other software will send a modem
// "AT command", which can still be buffered.
usb_serial_flush_input();
// and then listen for commands and process them
while (1) {
//send some characters to the other side
//send_str(PSTR("> \n"));
if (usb_serial_available())
n = recv_str(rx_buf, sizeof(rx_buf)); //read serial port
else
break;
parse_and_execute_command(rx_buf, n);
clear_screen();
draw_string(x-40,y,"receiving: ");
show_screen();
draw_char(x+20,y,rx_buf[0]);
show_screen();
}
}
return 0;
}
void wait_for_usb_connection()
{
// wait for the user to run their terminal emulator program
// which sets DTR to indicate it is ready to receive.
while (!(usb_serial_get_control() & USB_SERIAL_DTR)) /* wait */ ;
}
/** The MAIN loop. */
int main(void) {
// Turn off the CPU prescale.
CLKPR = 0x80;
CLKPR = 0x00;
// PORTA are general purpose inputs.
DDRA = 0x00;
PORTA = 0xff; // pull-ups all enabled
PORTD = 0xff;
DDRD = 0x00; // pull-ups all enabled
DDRF = 0x00; // These are ADC lines.
PORTF = 0x00;
usb_init();
// Set up Timer 0 to match compare every 1ms.
OCR0A = 250;
TCCR0A = 0x02; // CTC
TCCR0B = 0x03; // CK/64 (64 * 250 == 16000)
sei();
char line_buf[128] = {};
uint8_t line_len = 0;
uint8_t usb_ready = 0;
while (1) {
wdt_reset();
g_main_loop_count++;
if (usb_configured() && (usb_serial_get_control() & USB_SERIAL_DTR)) {
if (!usb_ready) {
usb_ready = 1;
strcpy_P(line_buf, PSTR("!GNR WELCOME " DEV_VERSION EOL));
usb_serial_write((uint8_t*)line_buf, strlen(line_buf));
line_len = 0;
}
} else {
stream_stop_all();
usb_serial_flush_input();
usb_ready = 0;
line_len = 0;
g_arm_code = 0;
}
if (usb_serial_available()) {
int16_t c = usb_serial_getchar();
if (c == '\r' || c == '\n') {
line_buf[line_len] = 0;
handle_line(line_buf);
if (g_arm_code) { g_arm_timer = ARM_TIMEOUT_MS; }
line_len = 0;
} else {
line_buf[line_len++] = c & 0xff;
if ((line_len + 1) >= sizeof(line_buf)) {
/* Clobber the first byte so that this line will be reported
as an error. */
line_buf[0] = MAGIC_OVERRUN_CODE;
line_len--;
}
}
}
if (TIFR0 & (1 << OCF0A)) {
TIFR0 |= (1 << OCF0A);
g_timer++;
stream_timer_update();
hit_timer_update();
g_main_loop_count = (uint16_t) (((uint32_t) g_main_loop_count) * 7 / 8);
}
stream_poll();
usb_poll();
hit_poll();
}
}
//
//-----------------------------------------------------------------------------------------
// Setup Ports, timers, start the works and never return, unless reset
// by the watchdog timer
// then - do everything, all over again
//-----------------------------------------------------------------------------------------
//
int main(void)
{
MCUSR &= ~(1 << WDRF); // Disable watchdog if enabled by bootloader/fuses
wdt_disable();
clock_prescale_set(clock_div_1); // with 16MHz crystal this means CLK=16000000
//------------------------------------------
// 16-bit Timer1 Initialization
TCCR1A = 0; //start the timer
TCCR1B = (1 << CS12); // prescale Timer1 by CLK/256
// 16000000 Hz / 256 = 62500 ticks per second
// 16-bit = 2^16 = 65536 maximum ticks for Timer1
// 65536 / 62500 = ~1.05 seconds
// so Timer1 will overflow back to 0 about every 1 seconds
// Timer1val = TCNT1; // get current Timer1 value
//------------------------------------------
// Init and set output for LEDS
LED_DDR = LED;
LED_PORT = 0;
EXTLED_DDR = EXT_G_LED | EXT_R_LED; // Init Green and Red LEDs
EXTLED_PORT = 0;
//------------------------------------------
// Init Pushbutton input
ENC_PUSHB_DDR = ENC_PUSHB_DDR & ~ENC_PUSHB_PIN; // Set pin for input
ENC_PUSHB_PORT= ENC_PUSHB_PORT | ENC_PUSHB_PIN; // Set pull up
//------------------------------------------
// Set run time parameters to Factory default under certain conditions
//
// Enforce "Factory default settings" when firmware is run for the very first time after
// a fresh firmware installation with a new "serial number" in the COLDSTART_REF #define
// This may be necessary if there is garbage in the EEPROM, preventing startup
// To activate, roll "COLDSTART_REF" Serial Number in the PM.h file
if (eeprom_read_byte(&E.EEPROM_init_check) != R.EEPROM_init_check)
{
eeprom_write_block(&R, &E, sizeof(E)); // Initialize eeprom to "factory defaults".
}
else
{
eeprom_read_block(&R, &E, sizeof(E)); // Load the persistent data from eeprom
}
uint8_t i2c_status = I2C_Init(); // Initialize I2C comms
lcd_Init(); // Init the LCD
// Initialize the LCD bargraph, load the bargraph custom characters
lcd_bargraph_Init();
//------------------------------------------
// LCD Print Version and I2C information (6 seconds in total during startup)
lcdClear();
lcdGotoXY(0,0);
lcdPrintData(STARTUPDISPLAY1,strlen(STARTUPDISPLAY1));
lcdGotoXY(0,1);
lcdPrintData(STARTUPDISPLAY2,strlen(STARTUPDISPLAY2));
_delay_ms(300);
lcdGotoXY(20-strlen(STARTUPDISPLAY3),1);
lcdPrintData(STARTUPDISPLAY3,strlen(STARTUPDISPLAY3));
_delay_ms(200);
lcdGotoXY(20-strlen(STARTUPDISPLAY4),2);
lcdPrintData(STARTUPDISPLAY4,strlen(STARTUPDISPLAY4));
_delay_ms(2500);
lcdGotoXY(0,3);
lcdPrintData(STARTUPDISPLAY5,strlen(STARTUPDISPLAY5));
sprintf(lcd_buf,"V%s", VERSION);
lcdGotoXY(20-strlen(lcd_buf),3);
lcdPrintData(lcd_buf, strlen(lcd_buf));
_delay_ms(2000);
lcdGotoXY(0,3);
if (i2c_status==1) lcdPrintData("AD7991-0 detected ",20);
else if (i2c_status==2) lcdPrintData("AD7991-1 detected ",20);
else lcdPrintData("Using built-in A/D ",20); // No I2C device detected,
// we will be using the builtin 10 bit ADs
if (R.USB_data) // Enumerate USB serial port, if USB Serial Data enabled
{
usb_init(); // Initialize USB communications
Status&=~USB_AVAILABLE; // Disable USB communications until checked if actually available
}
_delay_ms(1000);
//wdt_enable(WDTO_1S); // Start the Watchdog Timer, 1 second
encoder_Init(); // Init Rotary encoder
Menu_Mode = DEFAULT_MODE; // Power Meter Mode is normal default
Status |= MODE_CHANGE | MODE_DISPLAY; // Force a Display of Mode Intro when starting up
// Start the works, we're in business
while (1)
{
maintask(); // Do useful stuff
if (R.USB_data) // Do the below if USB Port has been enabled
{
// If USB port is available and not busy, then use it - otherwise mark it as blocked.
if (usb_configured() && (usb_serial_get_control() & USB_SERIAL_DTR))
{
Status |= USB_AVAILABLE; // Enable USB communications
EXTLED_PORT |= EXT_G_LED; // Turn Green LED On
usb_read_serial();
}
else
{
Status&=~USB_AVAILABLE; // Clear USB Available Flag to disable USB communications
EXTLED_PORT &= ~EXT_G_LED; // Turn Green LED off, if previously on
}
}
}
}
/**
* Main - Run the game which repeatedly loops through trying to find the gold
*/
int main() {
// Setup the hardware
set_clock_speed(CPU_8MHz);
init_hardware();
// Wait until the 'player' is attached...
draw_centred(17, "Waiting for");
draw_centred(24, "the player...");
show_screen();
while(!usb_configured() || !usb_serial_get_control());
// Run the main game loop
unsigned int seed = 0;
while (1) {
// Game start screen
clear_screen();
draw_centred(16, "--- LUCKY DIP ---");
draw_centred(25, "'s' to start...");
show_screen();
send_line("--- LUCKY DIP ---");
send_line("Press 's' to start...");
// Wait until the key has been pressed (perform seeding only if first run)
unsigned int seed_temp = 0;
int16_t curr_char;
do {
curr_char = usb_serial_getchar();
seed_temp++;
} while (curr_char != 's');
if (seed == 0) {
seed = seed_temp;
srand(seed);
}
usb_serial_write("\r\n", 2);
// Set the gold location
bury_gold();
// Present the 9 closed boxes
clear_screen();
for (unsigned char i = 0; i<BOXES_W*BOXES_H; i++) {
draw_box(i, 0);
}
show_screen();
// Prompt the user to pick a box by pressing a number key until they find the gold
send_line("Please enter a number between 1 and 9 to select a box...");
int dinner = 0;
while (!dinner) {
// Get the users input.
int16_t input = usb_serial_getchar();
// Convert the input to an intager to be used as an id.
int box = (input == '1') ? 0 : (input == '2') ? 1 : (input == '3') ? 2 : (input == '4') ? 3 : (input == '5') ? 4 : (input == '6') ? 5 : (input == '7') ? 6 : (input == '8') ? 7 : (input == '9') ? 8 : -1;
if (box != -1) {
// Debugging - Display selected box (once it's converted to an id from the users input).
char buff[20];
sprintf(buff, "User has selected box #%d", box);
(debug) ? send_debug_string(buff) : 0;
// Is the selected box open? I should probably open it is it's not...
if (is_open[box] == 1) {
send_line(" - That box is already open!");
} else {
is_open[box] = 1;
draw_box(box, 1);
}
// Did that box contain gold!?
if (is_gold[box] == 1) {
show_screen();
dinner = 1;
}
}
show_screen();
}
// Winner, winner, chicken dinner
send_line("You found the $$$!");
for (unsigned char i = 0; i<10; i++) {
PORTB ^= (1 << PB2);
PORTB ^= (1 << PB3);
_delay_ms(250);
}
}
// We'll never get here...
return 0;
}
// Basic command interpreter for controlling port pins
int main(void)
{
char rx_buf[8];// the buffer to store received characters
uint8_t n=0; //number of bytes read
//set clock speed to 8MhZ
set_clock_speed(CPU_8MHz);
//initialise LCD and ports
Init();
// initialize the USB, and then wait for the host
// to set configuration. If the Teensy is powered
// without a PC connected to the USB port, this
// will wait forever.
usb_init();
while (!usb_configured()) /* wait */ ;
_delay_ms(1000);
//keep looping until the character 'q' is received
while (rx_buf[0]!='q') {
// wait for the user to run their terminal emulator program
// which sets DTR to indicate it is ready to receive.
while (!(usb_serial_get_control() & USB_SERIAL_DTR)) /* wait */ ;
// discard anything that was received prior. Sometimes the
// operating system or other software will send a modem
// "AT command", which can still be buffered.
usb_serial_flush_input();
// and then listen for commands and process them
while (1) {
if (usb_serial_available())
{
n = recv_str(rx_buf, sizeof(rx_buf)); //read serial port
//send a characters to the other side
send_str(PSTR("> \n"));
}
else
{
break;
}
//check first character of the buffer and perform an action
if(rx_buf[0]=='a') //turn LED0 ON
PORTB = 1<<2;
if(rx_buf[0]=='d') //turn LED1 ON
PORTB = 1<<3;
if(rx_buf[0]=='s') //turn LED0 OFF
PORTB = 0x00;
}
}
return 0;
}