/****************************************************************************************
* Subroutine to write The instructions on the LCD cursor
* x = x coordinate, int y = y coordinate
****************************************************************************************/
void VGA_Description(int x,int y)
{
char text[50] = "Make sure that the input and output is connected to DE2\0";
VGA_text (x, y++, text);
y=y+1;
VGA_text (x, y++,"Steps to get this thing working\0");
VGA_text (x, y++, "1)Use `s` for next\0");
VGA_text (x, y++, "2)Use `a` for previous\0");
VGA_text (x, y++, "3)Activate/Deactivate sound using KEY[3]\0");
VGA_text (x, 25, "Distortion \0");
VGA_text (x, 32, " Echo \0");
VGA_text (x, 40, "Kill Switch\0");
VGA_text (x, 47, "Bit Crusher\0");
VGA_text (x, 55, " Regular \0");
VGA_text (35, 24, "Works with High input volume and low \0");
VGA_text (35, 25, "output volume\0");
VGA_text (35, 31, "Press KEY[1] to start and stop recording\0");
VGA_text (35, 33, "Press KEY[2] to terminate loop and resume\0");
VGA_text (35, 34, "normal playback\0");
VGA_text (35, 39, "Keep KEY[2] pressed to kill audio\0");
VGA_text (35, 46, "No instructions here :)\0");
VGA_text (35, 54, "Plain audio without any processing \0");
LCD_cursor (0,0); // set LCD cursor location to top row
LCD_text ("whats up \0");
LCD_cursor (0,1); // set LCD cursor location to top row
LCD_text ("Lets Get Started\0");
LCD_cursor_off (); // turn off the LCD cursor
}
static void halt_tc_open()
{
pwm_set2(0);
pwm_set1(0);
LCD_cursor(0, 0);
LCD_text(" FATAL! ");
LCD_cursor(1, 0);
LCD_text("TC open!");
while(1) {
wdt_reset();
BL_OFF;
_delay_ms(100);
BL_ON;
_delay_ms(100);
}
}
static void menu_value_u16(uint16_t *x)
{
uint16_t val;
char buf[9];
uint8_t done = 0;
uint8_t update = 1;
val = *x;
sprintf(buf, "O: %05u", val);
LCD_cursor(0, 0);
LCD_text(buf);
_delay_ms(100);
while (done==0) {
if (update == 1) {
update = 0;
sprintf(buf, "N: %05u", val);
LCD_cursor(1, 0);
LCD_text(buf);
}
uint8_t event = enc_read();
// check encoder
if (event == ENC_UP) {
val++;
update = 1;
} else if (event == ENC_DOWN) {
val--;
update = 1;
}
// check button
if (!(BUTTONS & _BV(BUT))) {
done = 1;
}
}
*x = val;
}
/****************************************************************************************
* Subroutine to check r10 and display accordingly
* x = x coordinate, y = y coordinate, val = r10's value
****************************************************************************************/
void VGA_Polling(int x,int y, int val){
/* output text message to the LCD */
LCD_cursor (0,0); // set LCD cursor location to top row
LCD_text ("Selected Effect :-\0");
VGA_box(0, 60, 319, 179, 0);
if (val == 1){
hollow_rect(20,90,100,20,0x7777);
hollow_rect(20,120,100,20,0x2222);
hollow_rect(20,150,100,20,0x2222);
hollow_rect(20,180,100,20,0x2222);
hollow_rect(20,210,100,20,0x2222);
LCD_cursor (0,1); // set LCD cursor location to bottom row
LCD_text ("Distortion \0");
LCD_cursor_off ();
VGA_text (10, 20, "Active effect is Distortion \0");
} else if (val == 2){
hollow_rect(20,90,100,20,0x2222);
hollow_rect(20,120,100,20,0x7777);
hollow_rect(20,150,100,20,0x2222);
hollow_rect(20,180,100,20,0x2222);
hollow_rect(20,210,100,20,0x2222);
VGA_text (10, 20, "Active effect is Echo \0");
LCD_cursor (0,1); // set LCD cursor location to bottom row
LCD_text ("Echo \0");
LCD_cursor_off ();
} else if (val == 3){
hollow_rect(20,90,100,20,0x2222);
hollow_rect(20,120,100,20,0x2222);
hollow_rect(20,150,100,20,0x7777);
hollow_rect(20,180,100,20,0x2222);
hollow_rect(20,210,100,20,0x2222);
VGA_text (10, 20, "Active effect is Kill Switch\0");
LCD_cursor (0,1); // set LCD cursor location to bottom row
LCD_text ("Kill Switch \0");
LCD_cursor_off ();
}else if (val == 4){
hollow_rect(20,90,100,20,0x2222);
hollow_rect(20,120,100,20,0x2222);
hollow_rect(20,150,100,20,0x2222);
hollow_rect(20,180,100,20,0x7777);
hollow_rect(20,210,100,20,0x2222);
VGA_text (10, 20, "Active effect is Bit Crusher\0");
LCD_cursor (0,1); // set LCD cursor location to bottom row
LCD_text ("Bit Crusher \0");
LCD_cursor_off ();
} else if (val == 5){
hollow_rect(20,90,100,20,0x2222);
hollow_rect(20,120,100,20,0x2222);
hollow_rect(20,150,100,20,0x2222);
hollow_rect(20,180,100,20,0x2222);
hollow_rect(20,210,100,20,0x7777);
VGA_text (10, 20, "Plain output activated \0");
LCD_cursor (0,1); // set LCD cursor location to bottom row
LCD_text ("Plain Audio \0");
LCD_cursor_off ();
}
}
void menu_redraw()
{
const struct menuitem_t *menu;
uint8_t pos;
char *text1;
char *text2;
menu = menu_item_stack[menu_depth];
pos = menu_pos_stack[menu_depth];
text1 = (char *)pgm_read_word(&menu[pos].text1);
text2 = (char *)pgm_read_word(&menu[pos].text2);
LCD_cursor(0, 0);
LCD_text(text1);
LCD_cursor(1, 0);
if (text2) {
LCD_text(text2);
} else {
LCD_text(" ");
}
}
static void run_reflow(uint8_t mode)
{
uint16_t temp = 0;
int16_t target = 30;
uint16_t pid_out;
uint8_t done = 0;
char buf[9];
pid_init();
_delay_ms(200);
wdt_enable(WDTO_2S);
global_time = 0;
pwm_set2(255);
while(done == 0) {
if (max6675_ready) {
max6675_ready = 0;
wdt_reset();
if ((max6675_data == 0) || (max6675_data & MAX6675_TC_OPEN)) {
halt_tc_open();
break;
}
// convert data to temp in degrees
temp = MAX6675_TEMP(max6675_data);
temp = temp / 4;
if (mode == 0) {
target = ramp_get(global_time);
if (target == -1000) {
done = 1;
LCD_cursor(1, 0);
LCD_text(" ");
LCD_cursor(0, 0);
LCD_text("DONE !!!");
break;
}
}
pid_out = pid_do(temp, target);
// apply new pwm, pidout limit is 4096 scale to 256
pwm_set1(pid_out >> 4);
serial_write('0');
serial_write('x');
serial_write_hex(global_time >> 8);
serial_write_hex(global_time& 0xff);
/* serial_write(' ');
serial_write('0');
serial_write('x');
serial_write_hex(max6675_data >> 8);
serial_write_hex(max6675_data & 0xff);*/
serial_write(' ');
serial_write('0');
serial_write('x');
serial_write_hex(temp >> 8);
serial_write_hex(temp & 0xff);
serial_write(' ');
serial_write('0');
serial_write('x');
serial_write_hex(target >> 8);
serial_write_hex(target & 0xff);
serial_write(' ');
serial_write('0');
serial_write('x');
serial_write_hex(pid_out >> 8);
serial_write_hex(pid_out & 0xff);
serial_write('\n');
}
if (mode == 1) {
uint8_t tmp = enc_read();
if (tmp == ENC_UP) {
if (target != 0xffff)
target ++;
} else if (tmp == ENC_DOWN) {
if (target > 20)
target --;
}
}
if (!(BUTTONS & _BV(BUT))) {
LCD_cursor(0, 0);
LCD_text(" USER ");
LCD_cursor(1, 0);
LCD_text("ABORT !!");
break;
}
LCD_cursor(0, 0);
snprintf(buf, 9, "C: %04d", temp);
LCD_text(buf);
LCD_cursor(1, 0);
snprintf(buf, 9, "T: %04d", target);
LCD_text(buf);
}
// pwm to zero
pwm_set1(0);
pwm_set2(0);
wdt_disable();
wait_blink();
}
