board/cpu: Import of STM32F3discovery (Cortex-M4) port

boards/mbed_lpc1768/include/board.h

@@ -13,6 +13,9 @@
 #include <stdint.h>
 #include "bitarithm.h"
 
+#define F_CPU                   (96000000)
+
+
 #define PIN_LED1 (BIT18)
 #define PIN_LED2 (BIT20)
 #define PIN_LED3 (BIT21)

boards/native/include/board.h

@@ -25,6 +25,10 @@
 
 #include <stdint.h>
 
+/* TODO: choose better value? */
+#define F_CPU 1000000
+
+
 void _native_LED_GREEN_OFF(void);
 #define LED_GREEN_OFF (_native_LED_GREEN_OFF())
 void _native_LED_GREEN_ON(void);

boards/redbee-econotag/include/board.h

@@ -23,6 +23,8 @@
 
 #include <stdint.h>
 
+#define F_CPU   (24000000)              ///< CPU target speed in Hz
+
 #define CTUNE 		0xb
 #define IBIAS 		0x1f
 #define FTUNE		0x7

boards/stm32f3discovery/Makefile

@@ -0,0 +1,16 @@
+
+# tell the Makefile.base which module to build
+MODULE = $(BOARD)_base
+
+# add a list of board specific subdirectories that should also be build
+DIRS = 
+
+.PHONY: all clean
+
+all: $(BINDIR)$(MODULE).a
+	@for i in $(DIRS) ; do $(MAKE) -C $$i ; done ;
+
+include $(RIOTBASE)/Makefile.base
+
+clean::
+	@for i in $(DIRS) ; do $(MAKE) -C $$i clean ; done ;

boards/stm32f3discovery/Makefile.include

@@ -0,0 +1,32 @@
+
+# define the cpu used by the stm32f3-discovery board
+export CPU = stm32f303vc
+
+
+# define tools used for building the project
+export PREFIX = arm-none-eabi-
+export CC = $(PREFIX)gcc
+export AR = $(PREFIX)ar
+export AS = $(PREFIX)as
+export LINK = $(PREFIX)gcc
+export SIZE = $(PREFIX)size
+export OBJCOPY = $(PREFIX)objcopy
+export TERMPROG = $(RIOTBASE)/dist/tools/pyterm/pyterm.py
+export FLASHER = st-flash
+
+# define build specific options
+export CPU_USAGE = -mcpu=cortex-m4
+export FPU_USAGE = -mfloat-abi=hard -mfpu=fpv4-sp-d16
+export CFLAGS = -ggdb -g3 -std=gnu99 -Os -Wall -Wstrict-prototypes $(CPU_USAGE) $(FPU_USAGE) -mlittle-endian -mthumb -mthumb-interwork -nostartfiles
+export CFLAGS += -DREENTRANT_SYSCALLS_PROVIDED
+export CFLAGS += -flto -ffunction-sections -fdata-sections -fno-builtin  # addiontal compiler flags to optimize compiling for newlib-nano
+export ASFLAGS = -ggdb -g3 -mcpu=cortex-m4 $(FPU_USAGE) -mlittle-endian
+export LINKFLAGS = -g3 -ggdb -std=gnu99 $(CPU_USAGE) $(FPU_USAGE) -mlittle-endian -static -lgcc -mthumb -mthumb-interwork -nostartfiles
+export LINKFLAGS += -T$(LINKERSCRIPT)                                   # linkerscript specified in cpu/Makefile.include
+export LINKFLAGS += -specs=nano.specs -lc -lnosys                       # additional linker flags to enable newlib-nano
+export OFLAGS = -O binary
+export FFLAGS = write bin/$(BOARD)/$(PROJECT).hex 0x8000000
+
+
+# export board specific includes to the global includes-listing
+export INCLUDES += -I$(RIOTBOARD)/stm32f3discovery/include

boards/stm32f3discovery/board.c

@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2014 Freie Universität Berlin
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ */
+
+/**
+ * @ingroup     board_stm32f3discovery
+ * @{
+ *
+ * @file        board.c
+ * @brief       Board specific implementations for the STM32F3Discovery evaluation board
+ *
+ * @author      Hauke Petersen <[email protected]>
+ *
+ * @}
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+
+#include "board.h"
+#include "cpu.h"
+
+
+extern void SystemInit(void);
+void leds_init(void);
+
+
+void board_init(void)
+{
+    /* initialize core clocks via STM-lib given function */
+    SystemInit();
+
+    /* initialize the CPU */
+    cpu_init();
+
+    /* initialize the boards LEDs */
+    leds_init();
+}
+
+
+/**
+ * @brief Initialize the boards on-board LEDs (LD3 - LD10)
+ *
+ * The LED initialization is hard-coded in this function. As the LEDs are soldered
+ * onto the board they are fixed to their CPU pins.
+ *
+ * The LEDs are connected to the following pins:
+ * - LD3: PE9
+ * - LD4: PE8
+ * - LD5: PE10
+ * - LD6: PE15
+ * - LD7: PE11
+ * - LD8: PE14
+ * - LD9: PE12
+ * - LD10: PE13
+ */
+void leds_init(void)
+{
+    /* enable clock for port GPIOE */
+    RCC->AHBENR |= RCC_AHBENR_GPIOEEN;
+
+    /* set output speed to 50MHz */
+    LED_PORT->OSPEEDR |= 0xffff0000;
+    /* set output type to push-pull */
+    LED_PORT->OTYPER &= ~(0x0000ff00);
+    /* configure pins as general outputs */
+    LED_PORT->MODER &= ~(0xffff0000);
+    LED_PORT->MODER |= 0x55550000;
+    /* disable pull resistors */
+    LED_PORT->PUPDR &= ~(0xffff0000);
+
+    /* turn all LEDs off */
+    LED_PORT->BRR = 0xff00;
+}

boards/stm32f3discovery/include/board.h

@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2014 Freie Universität Berlin
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ */
+
+/**
+ * @defgroup    board_stm32f3discovery STM32F3Discovery
+ * @ingroup     boards
+ * @brief       Board specific files for the STM32F3Discovery board.
+ * @{
+ *
+ * @file        board.h
+ * @brief       Board specific definitions for the STM32F3Discovery evaluation board.
+ *
+ * @author      Hauke Petersen <[email protected]>
+ */
+
+#ifndef __BOARD_H
+#define __BOARD_H
+
+#include "cpu.h"
+
+/**
+ * Define the nominal CPU core clock in this board
+ */
+#define F_CPU               (72000000UL)
+
+
+/**
+ * @name Assign the hardware timer
+ * @{
+ */
+#define HW_TIMER            TIMER_0
+/** @} */
+
+/**
+ * @name Example: configure connected NRF24L01+ (radio) device
+ *
+ * This is just an example on how to bind (externally or internally) connected
+ * devices to the CPUs peripherals.
+ * @{
+ */
+#define NRF24L01P_NUMOF     (1U)
+#define NRF24L01P_SPI       SPI_0
+#define NRF24L01P_CE        GPIO_0
+#define NRF24L01P_CSN       GPIO_1
+#define NRF24L01P_INT       GPIO_2
+/** @} */
+
+/**
+ * @name LED pin definitions
+ * @{
+ */
+#define LED_PORT            GPIOE
+#define LD3_PIN             (1 << 9)
+#define LD4_PIN             (1 << 8)
+#define LD5_PIN             (1 << 10)
+#define LD6_PIN             (1 << 15)
+#define LD7_PIN             (1 << 11)
+#define LD8_PIN             (1 << 14)
+#define LD9_PIN             (1 << 12)
+#define LD10_PIN            (1 << 13)
+/** @} */
+
+/**
+ * @name Macros for controlling the on-board LEDs.
+ * @{
+ */
+#define LD3_ON              LED_PORT->BSRR = LD3_PIN
+#define LD3_OFF             LED_PORT->BRR = LD3_PIN
+#define LD4_ON              LED_PORT->BSRR = LD4_PIN
+#define LD4_OFF             LED_PORT->BRR = LD4_PIN
+#define LD5_ON              LED_PORT->BSRR = LD5_PIN
+#define LD5_OFF             LED_PORT->BRR = LD5_PIN
+#define LD6_ON              LED_PORT->BSRR = LD6_PIN
+#define LD6_OFF             LED_PORT->BRR = LD6_PIN
+#define LD7_ON              LED_PORT->BSRR = LD7_PIN
+#define LD7_OFF             LED_PORT->BRR = LD7_PIN
+#define LD8_ON              LED_PORT->BSRR = LD8_PIN
+#define LD8_OFF             LED_PORT->BRR = LD8_PIN
+#define LD9_ON              LED_PORT->BSRR = LD9_PIN
+#define LD9_OFF             LED_PORT->BRR = LD9_PIN
+#define LD10_ON             LED_PORT->BSRR = LD10_PIN
+#define LD10_OFF            LED_PORT->BRR = LD10_PIN
+
+/* for compatability to other boards */
+#define LED_GREEN_ON        LD3_ON
+#define LED_GREEN_OFF       LD3_OFF
+#define LED_RED_ON          LD10_ON
+#define LED_RED_OFF         LD10_OFF
+/** @} */
+
+
+/**
+ * @brief Initialize board specific hardware, including clock, LEDs and std-IO
+ */
+void board_init(void);
+
+
+/** @} */
+#endif /** __BOARD_H */