From 766a2388d46f49e07ec0280fa4f3d254367850d1 Mon Sep 17 00:00:00 2001
From: utzig <utzig@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Sun, 29 Jun 2014 23:06:17 +0000
Subject: AVR HAL ported from RT-2 (serial/pal/hal tested)

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@6999 35acf78f-673a-0410-8e92-d51de3d6d3f4
---
 os/hal/ports/AVR/pal_lld.c | 156 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 156 insertions(+)
 create mode 100644 os/hal/ports/AVR/pal_lld.c

(limited to 'os/hal/ports/AVR/pal_lld.c')

diff --git a/os/hal/ports/AVR/pal_lld.c b/os/hal/ports/AVR/pal_lld.c
new file mode 100644
index 000000000..f2f5393eb
--- /dev/null
+++ b/os/hal/ports/AVR/pal_lld.c
@@ -0,0 +1,156 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006-2014 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+/**
+ * @file    AVR/pal_lld.c
+ * @brief   AVR GPIO low level driver code.
+ *
+ * @addtogroup PAL
+ * @{
+ */
+
+#include "hal.h"
+
+#if HAL_USE_PAL || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver exported variables.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables and types.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver interrupt handlers.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions.                                                */
+/*===========================================================================*/
+
+/**
+ * @brief   AVR GPIO ports configuration.
+ * @details GPIO registers initialization.
+ *
+ * @param[in] config    the AVR ports configuration
+ *
+ * @notapi
+ */
+void _pal_lld_init(const PALConfig *config) {
+
+#if defined(PORTA) || defined(__DOXYGEN__)
+  PORTA = config->porta.out;
+  DDRA = config->porta.dir;
+#endif
+
+#if defined(PORTB) || defined(__DOXYGEN__)
+  PORTB = config->portb.out;
+  DDRB = config->portb.dir;
+#endif
+
+#if defined(PORTC) || defined(__DOXYGEN__)
+  PORTC = config->portc.out;
+  DDRC = config->portc.dir;
+#endif
+
+#if defined(PORTD) || defined(__DOXYGEN__)
+  PORTD = config->portd.out;
+  DDRD = config->portd.dir;
+#endif
+
+#if defined(PORTE) || defined(__DOXYGEN__)
+  PORTE = config->porte.out;
+  DDRE = config->porte.dir;
+#endif
+
+#if defined(PORTF) || defined(__DOXYGEN__)
+  PORTF = config->portf.out;
+  DDRF = config->portf.dir;
+#endif
+
+#if defined(PORTG) || defined(__DOXYGEN__)
+  PORTG = config->portg.out;
+  DDRG = config->portg.dir;
+#endif
+
+#if defined(PORTH) || defined(__DOXYGEN__)
+  PORTH = config->porth.out;
+  DDRH = config->porth.dir;
+#endif
+
+#if defined(PORTJ) || defined(__DOXYGEN__)
+  PORTJ = config->portj.out;
+  DDRJ = config->portj.dir;
+#endif
+
+#if defined(PORTK) || defined(__DOXYGEN__)
+  PORTK = config->portk.out;
+  DDRK = config->portk.dir;
+#endif
+
+#if defined(PORTL) || defined(__DOXYGEN__)
+  PORTL = config->portl.out;
+  DDRL = config->portl.dir;
+#endif
+}
+
+/**
+ * @brief   Pads mode setup.
+ * @details This function programs a pads group belonging to the same port
+ *          with the specified mode.
+ *
+ * @param[in] port the port identifier
+ * @param[in] mask the group mask
+ * @param[in] mode the mode
+ *
+ * @note This function is not meant to be invoked directly by the application
+ *       code.
+ * @note @p PAL_MODE_UNCONNECTED is implemented as output as recommended by
+ *       the AVR Family User's Guide. Unconnected pads are set to input
+ *       with pull-up by default.
+ *
+ * @notapi
+ */
+void _pal_lld_setgroupmode(ioportid_t port,
+                           ioportmask_t mask,
+                           iomode_t mode) {
+
+  switch (mode) {
+  case PAL_MODE_RESET:
+  case PAL_MODE_INPUT:
+  case PAL_MODE_INPUT_ANALOG:
+    port->dir &= ~mask;
+    port->out &= ~mask;
+	break;
+  case PAL_MODE_UNCONNECTED:
+  case PAL_MODE_INPUT_PULLUP:
+    port->dir &= ~mask;
+    port->out |= mask;
+    break;
+  case PAL_MODE_OUTPUT_PUSHPULL:
+    port->dir |= mask;
+    break;
+  }
+}
+
+#endif /* HAL_USE_PAL */
+
+/** @} */
-- 
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