/*
* Write to LCD in 4 bit mode.
* Set cmd to 1 for data and 0 for commands.
*/
void lcd_write(unsigned char cmd, unsigned char ch)
{
if(cmd) {
SET_RS;
} else {
UNSET_RS;
}
UNSET_E;
UNSET_DATA;
while(lcd_status() == 1);
_delay_us(100);
PORTC|= (ch & 0xF0); /* Insert upper nibble */
SET_E;
UNSET_E;
UNSET_DATA;
while(lcd_status() == 1);
_delay_us(100);
PORTC|=(ch & 0x0F) << 4; /* Insert lower nibble */
SET_E;
UNSET_E;
}
void filename_ticker() {
static uint32_t wait_for = 0;
char* ticker_string;
if (g_ticker_enabled) {
if (wait_for++ < (SPINNER_RATE*2)) {
return;
}
wait_for = 0;
if (g_ticker_hold) {
g_ticker_hold--;
return;
}
g_ticker_index++;
ticker_string = g_ticker_file_info->lfname[0] ? g_ticker_file_info->lfname : g_ticker_file_info->fname;
if ((strlen(ticker_string) - g_ticker_index) < (MAX_LCD_LINE_LEN - 1)) {
if (g_ticker_end_hold) {
g_ticker_index--;
g_ticker_end_hold--;
return;
}
g_ticker_index = 0;
g_ticker_hold = g_ticker_end_hold = TICKER_HOLD;
}
lcd_status(&ticker_string[g_ticker_index]);
if (g_ticker_file_info->fattrib & AM_DIR) {
lcd_show_dir();
}
}
}
uint8_t handle_option_value(const char* poption, uint16_t* pcur_value, uint16_t min_value, uint16_t max_value, uint16_t step_value) {
char buffer[MAX_LCD_LINE_LEN + 1];
int32_t cur_value = *pcur_value;
if (cur_value < min_value || cur_value > max_value) {
cur_value = min_value;
}
lcd_title_P(poption);
utoa((uint16_t)cur_value, buffer, 10);
lcd_status(buffer);
while (1) {
switch(get_cur_command()) {
case COMMAND_SELECT:
*pcur_value = (uint16_t) cur_value;
return 1;
break;
case COMMAND_ABORT:
return 0;
break;
case COMMAND_NEXT:
cur_value += step_value;
if (cur_value > max_value) {
cur_value = max_value;
}
utoa((uint16_t)cur_value, buffer, 10);
lcd_status(buffer);
break;
case COMMAND_PREVIOUS:
cur_value -= step_value;
if (cur_value < min_value) {
cur_value = min_value;
}
utoa((uint16_t)cur_value, buffer, 10);
lcd_status(buffer);
break;
}
}
}
void display_filename(FILINFO* pfile_info) {
char* ticker_string;
g_ticker_file_info = pfile_info;
ticker_string = g_ticker_file_info->lfname[0] ? g_ticker_file_info->lfname : g_ticker_file_info->fname;
lcd_status(ticker_string);
if (g_ticker_file_info->fattrib & AM_DIR) {
lcd_show_dir();
}
g_ticker_index = 0;
g_ticker_hold = TICKER_HOLD;
g_ticker_enabled = strlen(ticker_string) > (MAX_LCD_LINE_LEN - 1);
}
uint8_t lcd_write(unsigned char chr, enum lcd_rs_t rs, uint8_t timeout) {
unsigned char status;
do {
status = lcd_status();
} while(lcd_is_busy(status) && timeout--);
if(lcd_is_busy(status)) {
lcd_info_set_write_timeout();
return 0;
}
lcd_tris_set(0x00);
lcd_en_pin = LCD_EN_LOW;
lcd_rs_pin = rs;
lcd_rw_pin = LCD_RW_WRITE;
lcd_send_nibble(chr >> 4);
lcd_send_nibble(chr);
return 1;
}
uint8_t handle_manual_filename(FILINFO* pfile_info) {
uint8_t cur_char_pos = 0;
uint8_t cursor_pos = 0;
uint8_t max_chars = strlen_P(S_FILENAME_CHARS);
uint8_t cur_char = 0;
lcd_title_P(S_ENTER_FILENAME);
lcd_status("");
lcd_cursor();
lcd_setCursor(0, 1);
// start with a nicely terminated string!
memset(pfile_info->lfname, 0, pfile_info->lfsize);
while (1) {
switch(get_cur_command()) {
case COMMAND_SELECT:
if (cursor_pos < (MAX_LCD_LINE_LEN - 1)) {
cur_char = pgm_read_byte(S_FILENAME_CHARS + cur_char_pos);
pfile_info->lfname[cursor_pos] = cur_char;
cursor_pos++;
lcd_setCursor(cursor_pos, 1);
cur_char_pos = 0;
}
break;
case COMMAND_SELECT_LONG:
strcat(pfile_info->lfname, ".tap");
lcd_noCursor();
// exit to previous menu, with accept
return 1;
break;
case COMMAND_ABORT:
if (cursor_pos != 0) {
pfile_info->lfname[cursor_pos] = 0;
lcd_setCursor(cursor_pos, 1);
lcd_write(' ');
cursor_pos--;
lcd_setCursor(cursor_pos, 1);
cur_char_pos = 0;
cur_char = pfile_info->lfname[cursor_pos];
while (pgm_read_byte(S_FILENAME_CHARS + cur_char_pos) != cur_char) {
cur_char_pos++;
}
}
break;
case COMMAND_ABORT_LONG:
lcd_title_P(S_OPERATION_ABORTED);
lcd_noCursor();
lcd_busy_spinner();
// exit to previous menu, with cancel
return 0;
break;
case COMMAND_NEXT:
cur_char_pos = (cur_char_pos + 1) % max_chars;
cur_char = pgm_read_byte(S_FILENAME_CHARS + cur_char_pos);
lcd_write(cur_char);
lcd_setCursor(cursor_pos, 1);
pfile_info->lfname[cursor_pos] = cur_char;
break;
case COMMAND_PREVIOUS:
if (cur_char_pos == 0) {
cur_char_pos = max_chars;
}
cur_char_pos--;
cur_char = pgm_read_byte(S_FILENAME_CHARS + cur_char_pos);
lcd_write(cur_char);
lcd_setCursor(cursor_pos, 1);
pfile_info->lfname[cursor_pos] = cur_char;
break;
}
}
}
