diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/drivers/ao_seven_segment.c | 216 | ||||
| -rw-r--r-- | src/drivers/ao_seven_segment.h | 34 |
2 files changed, 250 insertions, 0 deletions
diff --git a/src/drivers/ao_seven_segment.c b/src/drivers/ao_seven_segment.c new file mode 100644 index 00000000..1a643eff --- /dev/null +++ b/src/drivers/ao_seven_segment.c @@ -0,0 +1,216 @@ +/* + * Copyright © 2012 Keith Packard <keithp@keithp.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ + +#include <ao.h> +#include <ao_seven_segment.h> +#include <ao_lcd_stm.h> + +/* + * 0 + * ------- + * | | + * 1 | | 2 + * | 3 | + * ------- + * | | + * 4 | | 5 + * | 6 | + * ------- + * [] 7 + * + */ + +static const uint8_t ao_segments[] = { + (1 << AO_SEGMENT_0) | + (1 << AO_SEGMENT_1) | + (1 << AO_SEGMENT_2) | + (0 << AO_SEGMENT_3) | + (1 << AO_SEGMENT_4) | + (1 << AO_SEGMENT_5) | + (1 << AO_SEGMENT_6), /* 0 */ + + (0 << AO_SEGMENT_0) | + (0 << AO_SEGMENT_1) | + (1 << AO_SEGMENT_2) | + (0 << AO_SEGMENT_3) | + (0 << AO_SEGMENT_4) | + (1 << AO_SEGMENT_5) | + (0 << AO_SEGMENT_6), /* 1 */ + + (1 << AO_SEGMENT_0) | + (0 << AO_SEGMENT_1) | + (1 << AO_SEGMENT_2) | + (1 << AO_SEGMENT_3) | + (1 << AO_SEGMENT_4) | + (0 << AO_SEGMENT_5) | + (1 << AO_SEGMENT_6), /* 2 */ + + (1 << AO_SEGMENT_0) | + (0 << AO_SEGMENT_1) | + (1 << AO_SEGMENT_2) | + (1 << AO_SEGMENT_3) | + (0 << AO_SEGMENT_4) | + (1 << AO_SEGMENT_5) | + (1 << AO_SEGMENT_6), /* 3 */ + + (0 << AO_SEGMENT_0) | + (1 << AO_SEGMENT_1) | + (1 << AO_SEGMENT_2) | + (1 << AO_SEGMENT_3) | + (0 << AO_SEGMENT_4) | + (1 << AO_SEGMENT_5) | + (0 << AO_SEGMENT_6), /* 4 */ + + (1 << AO_SEGMENT_0) | + (1 << AO_SEGMENT_1) | + (0 << AO_SEGMENT_2) | + (1 << AO_SEGMENT_3) | + (0 << AO_SEGMENT_4) | + (1 << AO_SEGMENT_5) | + (1 << AO_SEGMENT_6), /* 5 */ + + (1 << AO_SEGMENT_0) | + (1 << AO_SEGMENT_1) | + (0 << AO_SEGMENT_2) | + (1 << AO_SEGMENT_3) | + (1 << AO_SEGMENT_4) | + (1 << AO_SEGMENT_5) | + (1 << AO_SEGMENT_6), /* 6 */ + + (1 << AO_SEGMENT_0) | + (0 << AO_SEGMENT_1) | + (1 << AO_SEGMENT_2) | + (0 << AO_SEGMENT_3) | + (0 << AO_SEGMENT_4) | + (1 << AO_SEGMENT_5) | + (0 << AO_SEGMENT_6), /* 7 */ + + (1 << AO_SEGMENT_0) | + (1 << AO_SEGMENT_1) | + (1 << AO_SEGMENT_2) | + (1 << AO_SEGMENT_3) | + (1 << AO_SEGMENT_4) | + (1 << AO_SEGMENT_5) | + (1 << AO_SEGMENT_6), /* 8 */ + + (1 << AO_SEGMENT_0) | + (1 << AO_SEGMENT_1) | + (1 << AO_SEGMENT_2) | + (1 << AO_SEGMENT_3) | + (0 << AO_SEGMENT_4) | + (1 << AO_SEGMENT_5) | + (1 << AO_SEGMENT_6), /* 9 */ + + (1 << AO_SEGMENT_0) | + (1 << AO_SEGMENT_1) | + (1 << AO_SEGMENT_2) | + (1 << AO_SEGMENT_3) | + (1 << AO_SEGMENT_4) | + (1 << AO_SEGMENT_5) | + (0 << AO_SEGMENT_6), /* A */ + + (0 << AO_SEGMENT_0) | + (1 << AO_SEGMENT_1) | + (0 << AO_SEGMENT_2) | + (1 << AO_SEGMENT_3) | + (1 << AO_SEGMENT_4) | + (1 << AO_SEGMENT_5) | + (1 << AO_SEGMENT_6), /* b */ + + (1 << AO_SEGMENT_0) | + (1 << AO_SEGMENT_1) | + (0 << AO_SEGMENT_2) | + (0 << AO_SEGMENT_3) | + (1 << AO_SEGMENT_4) | + (0 << AO_SEGMENT_5) | + (1 << AO_SEGMENT_6), /* c */ + + (0 << AO_SEGMENT_0) | + (0 << AO_SEGMENT_1) | + (1 << AO_SEGMENT_2) | + (1 << AO_SEGMENT_3) | + (1 << AO_SEGMENT_4) | + (1 << AO_SEGMENT_5) | + (1 << AO_SEGMENT_6), /* d */ + + (1 << AO_SEGMENT_0) | + (1 << AO_SEGMENT_1) | + (0 << AO_SEGMENT_2) | + (1 << AO_SEGMENT_3) | + (1 << AO_SEGMENT_4) | + (0 << AO_SEGMENT_5) | + (1 << AO_SEGMENT_6), /* E */ + + (1 << AO_SEGMENT_0) | + (1 << AO_SEGMENT_1) | + (0 << AO_SEGMENT_2) | + (1 << AO_SEGMENT_3) | + (1 << AO_SEGMENT_4) | + (0 << AO_SEGMENT_5) | + (0 << AO_SEGMENT_6), /* F */ +}; + +void +ao_seven_segment_set(uint8_t digit, uint8_t value) +{ + uint8_t s; + uint8_t segments; + + if (value == AO_SEVEN_SEGMENT_CLEAR) + segments = 0; + else { + segments = ao_segments[value & 0xf]; + + /* Check for decimal point */ + if (value & 0x10) + segments |= (1 << AO_SEGMENT_7); + } + + for (s = 0; s <= 7; s++) + ao_lcd_set(digit, s, !!(segments & (1 << s))); + ao_lcd_flush(); +} + +void +ao_seven_segment_clear(void) +{ + ao_lcd_clear(); +} + + +static void +ao_seven_segment_show(void) +{ + uint8_t digit, value; + ao_cmd_decimal(); + digit = ao_cmd_lex_i; + ao_cmd_decimal(); + value = ao_cmd_lex_i; + ao_seven_segment_set(digit, value); +} + + +static const struct ao_cmds ao_seven_segment_cmds[] = { + { ao_seven_segment_show, "S <digit> <value>\0Set LCD digit" }, + { 0, NULL }, +}; + +void +ao_seven_segment_init(void) +{ + ao_cmd_register(ao_seven_segment_cmds); +} diff --git a/src/drivers/ao_seven_segment.h b/src/drivers/ao_seven_segment.h new file mode 100644 index 00000000..5b29deaf --- /dev/null +++ b/src/drivers/ao_seven_segment.h @@ -0,0 +1,34 @@ +/* + * Copyright © 2012 Keith Packard <keithp@keithp.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ + +#ifndef _AO_SEVEN_SEGMENT_H_ +#define _AO_SEVEN_SEGMENT_H_ + +#define AO_SEVEN_SEGMENT_DECIMAL 0x10 + +#define AO_SEVEN_SEGMENT_CLEAR 0xff + +void +ao_seven_segment_set(uint8_t digit, uint8_t value); + +void +ao_seven_segment_clear(void); + +void +ao_seven_segment_init(void); + +#endif /* _AO_SEVEN_SEGMENT_H_ */ |