Add STM platform and stm-bringup demo program

[fw/altos] / src / stm / ao_led.c

diff --git a/src/stm/ao_led.c b/src/stm/ao_led.c
new file mode 100644 (file)
index 0000000..db65afd
--- /dev/null
+++ b/src/stm/ao_led.c
@@ -0,0 +1,69 @@
+/*
+ * 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 uint8_t ao_led_enable;
+
+#define LED_PORT       STM_GPIOD
+
+void
+ao_led_on(uint8_t colors)
+{
+       LED_PORT->odr |= (colors & ao_led_enable);
+}
+
+void
+ao_led_off(uint8_t colors)
+{
+       LED_PORT->odr &= ~(colors & ao_led_enable);
+}
+
+void
+ao_led_set(uint8_t colors)
+{
+       LED_PORT->odr = (LED_PORT->odr & ~(ao_led_enable)) | (colors & ao_led_enable);
+}
+
+void
+ao_led_toggle(uint8_t colors)
+{
+       LED_PORT->odr ^= (colors & ao_led_enable);
+}
+
+void
+ao_led_for(uint8_t colors, uint16_t ticks) __reentrant
+{
+       ao_led_on(colors);
+       ao_delay(ticks);
+       ao_led_off(colors);
+}
+
+void
+ao_led_init(uint8_t enable)
+{
+       int     bit;
+
+       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);
+               }
+       }
+}