Switch from GPLv2 to GPLv2+

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

diff --git a/src/stm/ao_exti_stm.c b/src/stm/ao_exti_stm.c
index 1361d0d4a8cb6caf0a41b3522c9ae49c53c71cf5..3e0b3e5c84e29953833bdf235503c68932504f98 100644 (file)
--- a/src/stm/ao_exti_stm.c
+++ b/src/stm/ao_exti_stm.c
@@ -3,7 +3,8 @@
  *
  * 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.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -70,21 +71,23 @@ ao_exti_setup (struct stm_gpio *gpio, uint8_t pin, uint8_t mode, void (*callback
        /* configure gpio to interrupt routing */
        stm_exticr_set(gpio, pin);
 
-       /* configure pin as input, setting selected pull-up/down mode */
-       stm_moder_set(gpio, pin, STM_MODER_INPUT);
-       switch (mode & (AO_EXTI_MODE_PULL_UP|AO_EXTI_MODE_PULL_DOWN)) {
-       case 0:
-       default:
-               pupdr  = STM_PUPDR_NONE;
-               break;
-       case AO_EXTI_MODE_PULL_UP:
-               pupdr = STM_PUPDR_PULL_UP;
-               break;
-       case AO_EXTI_MODE_PULL_DOWN:
-               pupdr = STM_PUPDR_PULL_DOWN;
-               break;
+       if (!(mode & AO_EXTI_PIN_NOCONFIGURE)) {
+               /* configure pin as input, setting selected pull-up/down mode */
+               stm_moder_set(gpio, pin, STM_MODER_INPUT);
+               switch (mode & (AO_EXTI_MODE_PULL_UP|AO_EXTI_MODE_PULL_DOWN)) {
+               case 0:
+               default:
+                       pupdr  = STM_PUPDR_NONE;
+                       break;
+               case AO_EXTI_MODE_PULL_UP:
+                       pupdr = STM_PUPDR_PULL_UP;
+                       break;
+               case AO_EXTI_MODE_PULL_DOWN:
+                       pupdr = STM_PUPDR_PULL_DOWN;
+                       break;
+               }
+               stm_pupdr_set(gpio, pin, pupdr);
        }
-       stm_pupdr_set(gpio, pin, pupdr);
 
        /* Set interrupt mask and rising/falling mode */
        stm_exti.imr &= ~mask;
@@ -117,6 +120,8 @@ ao_exti_setup (struct stm_gpio *gpio, uint8_t pin, uint8_t mode, void (*callback
 
 void
 ao_exti_set_mode(struct stm_gpio *gpio, uint8_t pin, uint8_t mode) {
+       (void) gpio;
+
        uint32_t        mask = 1 << pin;
        
        if (mode & AO_EXTI_MODE_RISING)
@@ -131,19 +136,22 @@ ao_exti_set_mode(struct stm_gpio *gpio, uint8_t pin, uint8_t mode) {
 
 void
 ao_exti_set_callback(struct stm_gpio *gpio, uint8_t pin, void (*callback)()) {
+       (void) gpio;
        ao_exti_callback[pin] = callback;
 }
 
 void
 ao_exti_enable(struct stm_gpio *gpio, uint8_t pin) {
        uint32_t        mask = (1 << pin);
+       (void) gpio;
        stm_exti.pr = mask;
-       stm_exti.imr |= (1 << pin);
+       stm_exti.imr |= mask;
 }
 
 void
 ao_exti_disable(struct stm_gpio *gpio, uint8_t pin) {
        uint32_t        mask = (1 << pin);
+       (void) gpio;
        stm_exti.imr &= ~mask;
        stm_exti.pr = mask;
 }