AVR: improvements and fixes

- HAL prescaler selection logic
- Added ADC support
- SPI improvements


git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@5893 35acf78f-673a-0410-8e92-d51de3d6d3f4

3 files changed, 164 insertions, 0 deletions

diff --git a/boards/ARDUINO/board.c b/boards/ARDUINO/board.c
new file mode 100644
index 000000000..1cb0f1adc
--- /dev/null
+++ b/boards/ARDUINO/board.c
@@ -0,0 +1,73 @@
+/*

+    ChibiOS/RT - Copyright (C) 2006-2013 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.

+*/

+

+#include "ch.h"

+#include "hal.h"

+

+/**

+ * @brief   PAL setup.

+ * @details Digital I/O ports static configuration as defined in @p board.h.

+ *          This variable is used by the HAL when initializing the PAL driver.

+ */

+#if HAL_USE_PAL || defined(__DOXYGEN__)

+const PALConfig pal_default_config =

+{

+#if defined(PORTA)

+  {VAL_PORTA, VAL_DDRA},

+#endif

+#if defined(PORTB)

+  {VAL_PORTB, VAL_DDRB},

+#endif

+#if defined(PORTC)

+  {VAL_PORTC, VAL_DDRC},

+#endif

+#if defined(PORTD)

+  {VAL_PORTD, VAL_DDRD},

+#endif

+#if defined(PORTE)

+  {VAL_PORTE, VAL_DDRE},

+#endif

+#if defined(PORTF)

+  {VAL_PORTF, VAL_DDRF},

+#endif

+#if defined(PORTG)

+  {VAL_PORTG, VAL_DDRG},

+#endif

+#if defined(PORTH)

+  {VAL_PORTH, VAL_DDRH},

+#endif

+#if defined(PORTJ)

+  {VAL_PORTJ, VAL_DDRJ},

+#endif

+#if defined(PORTK)

+  {VAL_PORTK, VAL_DDRK},

+#endif

+#if defined(PORTL)

+  {VAL_PORTL, VAL_DDRL},

+#endif

+};

+#endif /* HAL_USE_PAL */

+

+/**

+ * Board-specific initialization code.

+ */

+void boardInit(void) {

+  /*

+   * External interrupts setup, all disabled initially.

+   */

+  EICRA  = 0x00;

+  EIMSK  = 0x00;

+}

diff --git a/boards/ARDUINO/board.h b/boards/ARDUINO/board.h
new file mode 100644
index 000000000..62da0caac
--- /dev/null
+++ b/boards/ARDUINO/board.h
@@ -0,0 +1,86 @@
+/*

+    ChibiOS/RT - Copyright (C) 2006-2013 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.

+*/

+

+#ifndef _BOARD_H_

+#define _BOARD_H_

+

+/*

+ * Setup for the Arduino Mega board.

+ */

+

+/*

+ * Board identifier.

+ */

+#define BOARD_ARDUINO

+#define BOARD_NAME "Arduino"

+

+/* All inputs with pull-ups */

+#define VAL_DDRA  0x00

+#define VAL_PORTA 0xFF

+

+/* All inputs except PB5 which has a LED connected */

+#define VAL_DDRB  0x20

+#define VAL_PORTB 0xFF

+

+/* All inputs with pull-ups */

+#define VAL_DDRC  0x00

+#define VAL_PORTC 0xFF

+

+/* All inputs with pull-ups */

+#define VAL_DDRD  0x00

+#define VAL_PORTD 0xFF

+

+/* All inputs except PE1 (Serial TX0) */

+#define VAL_DDRE  0x02

+#define VAL_PORTE 0xFF

+

+/* All inputs with pull-ups */

+#define VAL_DDRF  0x00

+#define VAL_PORTF 0xFF

+

+/* All inputs with pull-ups */

+#define VAL_DDRG  0x00

+#define VAL_PORTG 0xFF

+

+/* All inputs with pull-ups */

+#define VAL_DDRH  0x00

+#define VAL_PORTH 0xFF

+

+/* All inputs with pull-ups */

+#define VAL_DDRJ  0x00

+#define VAL_PORTJ 0xFF

+

+/* All inputs with pull-ups */

+#define VAL_DDRK  0x00

+#define VAL_PORTK 0xFF

+

+/* All inputs with pull-ups */

+#define VAL_DDRL  0x00

+#define VAL_PORTL 0xFF

+

+#define PORTB_LED1        5

+

+#if !defined(_FROM_ASM_)

+#ifdef __cplusplus

+extern "C" {

+#endif

+  void boardInit(void);

+#ifdef __cplusplus

+}

+#endif

+#endif /* _FROM_ASM_ */

+

+#endif /* _BOARD_H_ */

diff --git a/boards/ARDUINO/board.mk b/boards/ARDUINO/board.mk
new file mode 100644
index 000000000..1dd55e286
--- /dev/null
+++ b/boards/ARDUINO/board.mk
@@ -0,0 +1,5 @@
+# List of all the board related files.

+BOARDSRC = ${CHIBIOS}/boards/ARDUINO/board.c

+

+# Required include directories

+BOARDINC = ${CHIBIOS}/boards/ARDUINO