Diff: targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/port_api.c

Revision:

0:9b334a45a8ff

Child:

50:a417edff4437

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/port_api.c	Thu Oct 01 15:25:22 2015 +0300
@@ -0,0 +1,109 @@
+/***************************************************************************//**
+ * @file port_api.c
+ *******************************************************************************
+ * @section License
+ * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b>
+ *******************************************************************************
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ *
+ * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no
+ * obligation to support this Software. Silicon Labs is providing the
+ * Software "AS IS", with no express or implied warranties of any kind,
+ * including, but not limited to, any implied warranties of merchantability
+ * or fitness for any particular purpose or warranties against infringement
+ * of any proprietary rights of a third party.
+ *
+ * Silicon Labs will not be liable for any consequential, incidental, or
+ * special damages, or any other relief, or for any claim by any third party,
+ * arising from your use of this Software.
+ *
+ ******************************************************************************/
+
+#include "device.h"
+#if DEVICE_PORTOUT
+
+#include "port_api.h"
+#include "pinmap.h"
+#include "gpio_api.h"
+#include "em_gpio.h"
+#include "em_cmu.h"
+
+#define PORT_NUM_PINS 16
+
+uint8_t port_get_index(port_t *obj)
+{
+    return 0;
+}
+
+PinName port_pin(PortName port, int pin_n)
+{
+    return (PinName) (pin_n | port << 4); // Encode pin and port number in one uint32
+}
+
+void port_preinit(port_t *obj, PortName port, int mask, PinDirection dir)
+{
+    obj->mask = mask;
+    obj->port = port;
+    obj->dir = dir;
+}
+
+void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
+{
+    port_preinit(obj, port, mask, dir);
+    port_dir(obj, obj->dir);
+}
+
+void port_mode(port_t *obj, PinMode mode)
+{
+    /* Set mode for pins given by mask */
+    uint32_t pin;
+    for (pin = 0; pin < PORT_NUM_PINS; pin++) {
+        if (obj->mask & (1 << pin)) {
+            pin_mode(port_pin(obj->port, pin), mode);
+        }
+    }
+}
+
+void port_dir(port_t *obj, PinDirection dir)
+{
+    obj->dir = dir;
+
+    /* Set default pin mode for pins given by mask */
+    switch (dir) {
+        case PIN_INPUT:
+            port_mode(obj, PullDefault);
+            break;
+        case PIN_OUTPUT:
+            port_mode(obj, PullNone);
+            break;
+    }
+}
+
+void port_write(port_t *obj, int value)
+{
+    if (value) {
+        GPIO_PortOutSet(obj->port, obj->mask);
+    } else {
+        GPIO_PortOutClear(obj->port, obj->mask);
+    }
+}
+
+int port_read(port_t *obj)
+{
+    if (obj->dir == PIN_INPUT) {
+        return (int) (GPIO_PortInGet(obj->port) & obj->mask);
+    } else {
+        return (int) (GPIO_PortOutGet(obj->port) & obj->mask);
+    }
+}
+
+#endif