diff options
Diffstat (limited to 'src/stm/ao_led.c')
| -rw-r--r-- | src/stm/ao_led.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/stm/ao_led.c b/src/stm/ao_led.c new file mode 100644 index 00000000..ee313b6f --- /dev/null +++ b/src/stm/ao_led.c @@ -0,0 +1,71 @@ +/* + * 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" + +__pdata uint16_t ao_led_enable; + +void +ao_led_on(uint16_t colors) +{ + LED_PORT->bsrr = (colors & ao_led_enable); +} + +void +ao_led_off(uint16_t colors) +{ + LED_PORT->bsrr = (uint32_t) (colors & ao_led_enable) << 16; +} + +void +ao_led_set(uint16_t colors) +{ + uint16_t on = colors & ao_led_enable; + uint16_t off = ~colors & ao_led_enable; + + LED_PORT->bsrr = off << 16 | on; +} + +void +ao_led_toggle(uint16_t colors) +{ + LED_PORT->odr ^= (colors & ao_led_enable); +} + +void +ao_led_for(uint16_t colors, uint16_t ticks) __reentrant +{ + ao_led_on(colors); + ao_delay(ticks); + ao_led_off(colors); +} + +void +ao_led_init(uint16_t enable) +{ + int bit; + + stm_rcc.ahbenr |= (1 << LED_PORT_ENABLE); + ao_led_enable = enable; + LED_PORT->odr &= ~enable; + for (bit = 0; bit < 16; bit++) { + if (enable & (1 << bit)) { + stm_moder_set(LED_PORT, bit, STM_MODER_OUTPUT); + stm_otyper_set(LED_PORT, bit, STM_OTYPER_PUSH_PULL); + } + } +} |