Add initial ADuCRF101 CPU support

cpu/arm/aducrf101/Common/GCC/ADuCRF101.ld

@@ -0,0 +1,105 @@
+/**
+ * Copyright (c) 2014, Analog Devices, Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted (subject to the limitations in the
+ * disclaimer below) provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * - Neither the name of Analog Devices, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
+ * GRANTED BY THIS LICENSE.  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
+ * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+
+ENTRY(Reset_Handler)
+
+MEMORY
+{
+        flash (rx) 	: org = 0x00000000, len = 128k
+        ram (rwx)       : org = 0x20000000, len = 16k
+}
+
+SECTIONS
+{
+        .vectors : {
+                __vectors_start = .;
+                KEEP(*(.vectors))
+                . = ALIGN(4);
+        } >flash
+
+        .text : {
+                . = ALIGN(4);
+                *(.text)
+                *(.text.*)
+                etext = .;
+        } >flash
+
+        .ARM.ex : {
+                *(.ARM.extab* .gnu.linkonce.armextab.*)
+                __exidx_start = .;
+                *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+                __exidx_end = .;
+        } >flash
+
+        .rodata : {
+                . = ALIGN(4);
+                *(.rodata)
+                *(.rodata.*)
+                . = ALIGN(4);
+                __rodata_end = .;
+        } >flash
+
+        .data : {
+                /* Initialized data is placed in flash, and will get
+                   copied to RAM by crt0.S */
+                . = ALIGN(4);
+                __data_flash_start = LOADADDR(.data);
+                __data_start = .;
+                *(.data)
+                *(.data.*)
+
+                /* Code that goes into RAM also ends up here, and
+                   gets copied along with the data section. */
+                *(.ramtext*)
+
+                __data_end = .;
+                edata = .;
+        } > ram AT > flash
+
+        .bss : {
+                /* Stack is in BSS */
+                . = ALIGN(8);
+                __bss_start = .;
+                *(.bss.stack)
+                *(.bss)
+                *(.bss.*)
+                *(COMMON)
+                . = ALIGN(4);
+                __bss_end = .;
+                end = .;
+        } > ram
+}

cpu/arm/aducrf101/Common/GCC/crt0.S

@@ -0,0 +1,184 @@
+/**
+ * Copyright (c) 2014, Analog Devices, Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted (subject to the limitations in the
+ * disclaimer below) provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * - Neither the name of Analog Devices, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
+ * GRANTED BY THIS LICENSE.  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
+ * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __STACK_SIZE
+#define __STACK_SIZE 1024
+#endif
+
+.equ SCB_VTOR, 0xE000ED08
+
+/* Stack */
+        .section .bss.stack
+stack_start:
+        .space __STACK_SIZE, 0
+stack_end:
+        .global stack_end
+
+/* Vector table */
+        .macro handler name
+        .long \name\()
+        .weak \name\()
+        .set \name\(), unhandled_vector
+        .endm
+
+        .macro handler_reserved
+        .long 0
+        .endm
+
+        .section .vectors, "a", %progbits
+vectors:
+        .long stack_end
+        .long Reset_Handler
+
+        /* Cortex-M3 core interrupts */
+        handler NMI_Handler
+        handler HardFault_Handler
+        handler MemManage_Handler
+        handler BusFault_Handler
+        handler UsageFault_Handler
+        handler_reserved
+        handler_reserved
+        handler_reserved
+        handler_reserved
+        handler SVC_Handler
+        handler DebugMon_Handler
+        handler_reserved
+        handler PendSV_Handler
+        handler SysTick_Handler
+
+        /* ADuCRF101 external interrupts */
+        handler WakeUp_Int_Handler
+        handler Ext_Int0_Handler
+        handler Ext_Int1_Handler
+        handler Ext_Int2_Handler
+        handler Ext_Int3_Handler
+        handler Ext_Int4_Handler
+        handler Ext_Int5_Handler
+        handler Ext_Int6_Handler
+        handler Ext_Int7_Handler
+        handler Ext_Int8_Handler
+        handler WDog_Tmr_Int_Handler
+        handler_reserved
+        handler GP_Tmr0_Int_Handler
+        handler GP_Tmr1_Int_Handler
+        handler ADC0_Int_Handler
+        handler Flsh_Int_Handler
+        handler UART_Int_Handler
+        handler SPI0_Int_Handler
+        handler SPI1_Int_Handler
+        handler I2C0_Slave_Int_Handler
+        handler I2C0_Master_Int_Handler
+        handler_reserved
+        handler_reserved
+        handler DMA_Err_Int_Handler
+        handler DMA_SPI1_TX_Int_Handler
+        handler DMA_SPI1_RX_Int_Handler
+        handler DMA_UART_TX_Int_Handler
+        handler DMA_UART_RX_Int_Handler
+        handler DMA_I2C0_STX_Int_Handler
+        handler DMA_I2C0_SRX_Int_Handler
+        handler DMA_I2C0_MTX_Int_Handler
+        handler DMA_I2C0_MRX_Int_Handler
+        handler_reserved
+        handler_reserved
+        handler_reserved
+        handler DMA_ADC_Int_Handler
+        handler DMA_SPI0_TX_Int_Handler
+        handler DMA_SPI0_RX_Int_Handler
+        handler PWMTrip_Int_Handler
+        handler PWM0_Int_Handler
+        handler PWM1_Int_Handler
+        handler PWM2_Int_Handler
+        handler PWM3_Int_Handler
+
+/* Reset handler */
+        .section .text
+        .syntax unified
+        .code 16
+        .global Reset_Handler
+        .thumb_func
+Reset_Handler:
+        /* Set up some basics, in case we came here from a call
+        rather than system reset. */
+
+        /* Disable interrupts */
+        cpsid i
+
+        /* Privileged mode, main stack, no floating point */
+        mov r0, #0
+        msr control, r0
+        isb
+
+        /* Point vector table to the right place */
+        ldr r0, =__vectors_start
+        ldr r1, =SCB_VTOR
+        str r0, [r1]
+
+        /* Load initial stack pointer */
+        ldr r0, =stack_end
+        mov sp, r0
+        isb
+
+        /* Clear BSS */
+        mov r0, #0
+        ldr r1, =__bss_start
+        ldr r2, =__bss_end
+zero_bss_loop:
+        cmp r1, r2
+        it lt
+        strlt r0, [r1], #4
+        blt zero_bss_loop
+
+        /* Copy initialized data from flash to RAM */
+        ldr r0, =__data_flash_start
+        ldr r1, =__data_start
+        ldr r2, =__data_end
+copy_data_loop:
+        ldr r3, [r0], #4
+        cmp r1, r2
+        it lt
+        strlt r3, [r1], #4
+        blt copy_data_loop
+
+        /* We can run C code now */
+        bl main
+
+        /* If main returned, just loop */
+        b .
+
+/* Handler for otherwise unhandled vectors */
+        .section .text,"ax",%progbits
+        .thumb_func
+unhandled_vector:
+        b unhandled_vector

cpu/arm/aducrf101/Makefile.aducrf101

@@ -0,0 +1,125 @@
+# -*- makefile -*-
+
+# Copyright (c) 2014, Analog Devices, Inc.  All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted (subject to the limitations in the
+# disclaimer below) provided that the following conditions are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+#
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the
+#   distribution.
+#
+# - Neither the name of Analog Devices, Inc. nor the names of its
+#   contributors may be used to endorse or promote products derived
+#   from this software without specific prior written permission.
+#
+# NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
+# GRANTED BY THIS LICENSE.  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
+# HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Author: Jim Paris <jim.paris@rigado.com>
+
+CONTIKI_CPU = $(CONTIKI)/cpu/arm/aducrf101
+
+CROSS_COMPILE = arm-none-eabi-
+
+CC      = $(CROSS_COMPILE)gcc
+LD      = $(CROSS_COMPILE)gcc
+AS      = $(CROSS_COMPILE)gcc
+AR      = $(CROSS_COMPILE)ar
+NM      = $(CROSS_COMPILE)nm
+OBJCOPY = $(CROSS_COMPILE)objcopy
+OBJDUMP = $(CROSS_COMPILE)objdump
+STRIP   = $(CROSS_COMPILE)strip
+
+CFLAGS_OPT ?= -Os
+CFLAGS_DEBUG ?= -ggdb3 -fomit-frame-pointer
+CFLAGS += $(CFLAGS_OPT) $(CFLAGS_DEBUG)
+CFLAGS += -std=gnu99
+CFLAGS += -ffreestanding -mcpu=cortex-m3 -mthumb -mno-thumb-interwork
+CFLAGS += -ffunction-sections -fdata-sections -fno-common -fno-builtin
+CFLAGS += -flto
+
+ifdef WERROR
+  CFLAGS += -Wall -Werror
+  # These warnings are triggered by existing Contiki code
+  CFLAGS += -Wno-error=pointer-sign
+  CFLAGS += -Wno-error=char-subscripts
+  CFLAGS += -Wno-error=unused-variable
+  CFLAGS += -Wno-error=unused-but-set-variable
+endif
+
+# UIP code does not follow C aliasing rules
+CFLAGS += -fno-strict-aliasing
+
+LDFLAGS  = $(CFLAGS)
+LDFLAGS += -specs=nosys.specs -nostartfiles
+
+# TODO: When it becomes more commonly available, switch to newlib-nano
+# for significant size reduction, by uncommenting this:
+# LDFLAGS += -specs=nano.specs
+
+LDFLAGS += -Wl,--gc-sections
+LDFLAGS += -Wl,-T$(CONTIKI_CPU)/Common/GCC/ADuCRF101.ld
+
+# Compiler-specific startup code
+CONTIKI_CPU_DIRS += Common/GCC
+CONTIKI_SOURCEFILES += crt0.S
+
+ifdef SERIAL_ID
+  CFLAGS += -DSERIAL_ID='$(SERIAL_ID)'
+endif
+
+ifdef __STACK_SIZE
+  CFLAGS += -D__STACK_SIZE=$(__STACK_SIZE)
+endif
+
+# HSI internal oscillator by default
+CFLAGS += -DF_CPU=16000000
+
+### CPU-dependent directories and source files
+CONTIKI_CPU_DIRS += ../common/CMSIS
+
+CONTIKI_CPU_DIRS += .
+CONTIKI_SOURCEFILES += slip-arch.c
+
+CONTIKI_CPU_DIRS += dev
+CONTIKI_SOURCEFILES += uart.c
+CONTIKI_SOURCEFILES += clock.c
+CONTIKI_SOURCEFILES += watchdog.c
+
+CONTIKI_CPU_DIRS += Common
+CONTIKI_SOURCEFILES += system_ADuCRF101.c
+
+ASFLAGS += -c $(CFLAGS)
+
+ifdef CORE
+.PHONY: symbols.c symbols.h
+symbols.c symbols.h:
+	$(NM) -C $(CORE) | grep -v @ | grep -v dll_crt0 | \
+		awk -f $(CONTIKI)/tools/mknmlist > symbols.c || rm -f symbols.c
+else
+symbols.c symbols.h:
+	cp ${CONTIKI}/tools/empty-symbols.c symbols.c
+	cp ${CONTIKI}/tools/empty-symbols.h symbols.h
+endif
+
+contiki-$(TARGET).a: ${addprefix $(OBJECTDIR)/,symbols.o}
+
+%.hex: %
+	$(OBJCOPY) -O ihex $^ $@

cpu/arm/aducrf101/aducrf101-contiki.h

@@ -0,0 +1,52 @@
+/**
+ * Copyright (c) 2014, Analog Devices, Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted (subject to the limitations in the
+ * disclaimer below) provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * - Neither the name of Analog Devices, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
+ * GRANTED BY THIS LICENSE.  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
+ * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/**
+ * \author Jim Paris <jim.paris@rigado.com>
+ */
+
+#ifndef ADUCRF101_CONTIKI_H
+#define ADUCRF101_CONTIKI_H
+
+#include <stdint.h>
+
+#include <aducrf101-include.h>
+
+typedef uint32_t clock_time_t;
+typedef uint16_t uip_stats_t;
+
+typedef unsigned long rtimer_clock_t;
+#define RTIMER_CLOCK_LT(a, b)     ((signed long)((a) - (b)) < 0)
+rtimer_clock_t rtimer_arch_now(void);
+
+#endif

cpu/arm/aducrf101/clock.c

@@ -0,0 +1,94 @@
+/**
+ * Copyright (c) 2014, Analog Devices, Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted (subject to the limitations in the
+ * disclaimer below) provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * - Neither the name of Analog Devices, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
+ * GRANTED BY THIS LICENSE.  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
+ * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/**
+ * \author Jim Paris <jim.paris@rigado.com>
+ */
+
+#include <aducrf101-contiki.h>
+#include <sys/clock.h>
+#include <sys/etimer.h>
+
+static volatile clock_time_t current_clock = 0;
+static volatile unsigned long current_seconds = 0;
+static unsigned int second_countdown = CLOCK_SECOND;
+
+void
+SysTick_handler(void) __attribute__ ((interrupt));
+
+void
+SysTick_Handler(void)
+{
+  current_clock++;
+  if(etimer_pending()) {
+    etimer_request_poll();
+  }
+  if(--second_countdown == 0) {
+    current_seconds++;
+    second_countdown = CLOCK_SECOND;
+  }
+}
+/*---------------------------------------------------------------------------*/
+void
+clock_init()
+{
+  SysTick_Config(F_CPU / CLOCK_SECOND);
+}
+/*---------------------------------------------------------------------------*/
+clock_time_t
+clock_time(void)
+{
+  return current_clock;
+}
+/*---------------------------------------------------------------------------*/
+unsigned long
+clock_seconds(void)
+{
+  return current_seconds;
+}
+/*---------------------------------------------------------------------------*/
+void
+clock_delay_usec(uint16_t usec)
+{
+  /* Delay by watching the SysTick value change. */
+  int32_t remaining = (int32_t)usec * F_CPU / 1000000;
+  int32_t old = SysTick->VAL;
+  while(remaining > 0) {
+    int32_t new = SysTick->VAL;
+    if(new > old) { /* wraparound */
+      old += SysTick->LOAD;
+    }
+    remaining -= (old - new);
+    old = new;
+  }
+}

cpu/arm/aducrf101/dev/uart.c

@@ -0,0 +1,116 @@
+/**
+ * Copyright (c) 2014, Analog Devices, Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted (subject to the limitations in the
+ * disclaimer below) provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * - Neither the name of Analog Devices, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
+ * GRANTED BY THIS LICENSE.  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
+ * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/**
+ * \author Jim Paris <jim.paris@rigado.com>
+ */
+
+#include <unistd.h>
+#include <aducrf101-include.h>
+
+static int (*uart_input_handler)(unsigned char c);
+static int stdout_enabled;
+
+void
+uart_init(int baud)
+{
+  /* P1.0 is UARTRXD, P1.1 is UARTTXD */
+  pADI_GP1->GPCON &= ~(GP1CON_CON0_MSK | GP1CON_CON1_MSK);
+  pADI_GP1->GPCON |= GP1CON_CON0_UART0RXD | GP1CON_CON1_UART0TXD;
+
+  /* Set P1.1 as output */
+  GP1OEN_OEN1_BBA = 1;
+
+  /* Set baudrate */
+  int div = (F_CPU / 32) / baud;
+  pADI_UART->COMDIV = div;
+  pADI_UART->COMFBR = 0x8800 | ((((64 * F_CPU) / div) / baud) - 2048);
+  pADI_UART->COMIEN = 0;
+  pADI_UART->COMLCR = 3;
+
+  /* Set up RX IRQ */
+  pADI_UART->COMIEN = COMIEN_ERBFI_EN;
+  NVIC_EnableIRQ(UART_IRQn);
+  __enable_irq();
+
+  uart_input_handler = NULL;
+  stdout_enabled = 1;
+}
+/*---------------------------------------------------------------------------*/
+void
+uart_put(unsigned char x)
+{
+  while(!(pADI_UART->COMLSR & COMLSR_THRE))
+    continue;
+  pADI_UART->COMTX = x;
+}
+/*---------------------------------------------------------------------------*/
+void
+UART_Int_Handler(void)
+{
+  if(pADI_UART->COMIIR & COMIIR_STA_RXBUFFULL) {
+    unsigned char x = pADI_UART->COMRX;
+    if(uart_input_handler) {
+      uart_input_handler(x);
+    }
+  }
+}
+/*---------------------------------------------------------------------------*/
+void
+uart_set_input(int (*input)(unsigned char c))
+{
+  uart_input_handler = input;
+}
+void
+uart_enable_stdout(int enabled)
+{
+  stdout_enabled = enabled;
+}
+/*---------------------------------------------------------------------------*/
+/* Connect newlib's _write function to the UART. */
+int
+_write(int fd, const void *buf, size_t len)
+{
+  if(stdout_enabled == 0) {
+    return -1;
+  }
+
+  if(fd == STDOUT_FILENO || fd == STDERR_FILENO) {
+    int n = len;
+    const unsigned char *p = buf;
+    while(n--)
+      uart_put(*p++);
+    return len;
+  }
+  return -1;
+}

cpu/arm/aducrf101/dev/uart.h

@@ -0,0 +1,47 @@
+/**
+ * Copyright (c) 2014, Analog Devices, Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted (subject to the limitations in the
+ * disclaimer below) provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * - Neither the name of Analog Devices, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
+ * GRANTED BY THIS LICENSE.  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
+ * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/**
+ * \author Jim Paris <jim.paris@rigado.com>
+ */
+
+#ifndef UART_H
+#define UART_H
+
+void uart_init(int baud);
+void uart_put(unsigned char x);
+void uart_set_input(int (*input)(unsigned char c));
+
+void uart_enable_stdout(int enabled);
+
+#endif

cpu/arm/aducrf101/dev/watchdog.c

@@ -0,0 +1,67 @@
+/**
+ * Copyright (c) 2014, Analog Devices, Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted (subject to the limitations in the
+ * disclaimer below) provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * - Neither the name of Analog Devices, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
+ * GRANTED BY THIS LICENSE.  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
+ * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/**
+ * \author Jim Paris <jim.paris@rigado.com>
+ */
+
+#include <aducrf101-contiki.h>
+#include <watchdog.h>
+
+void
+watchdog_init(void)
+{
+  /* Start disabled. */
+  T3CON_ENABLE_BBA = 0;
+}
+/*---------------------------------------------------------------------------*/
+void
+watchdog_start(void)
+{
+  /* 32 second timeout.  This also locks the watchdog configuration. */
+  pADI_WDT->T3CON = 0x00E9;
+  pADI_WDT->T3LD = 0x1000;
+  pADI_WDT->T3VAL = 0x1000;
+}
+/*---------------------------------------------------------------------------*/
+void
+watchdog_stop(void)
+{
+  /* Not possible to stop, once enabled */
+}
+/*---------------------------------------------------------------------------*/
+void
+watchdog_periodic(void)
+{
+  pADI_WDT->T3CLRI = 0xcccc;
+}

cpu/arm/aducrf101/mtarch.h

@@ -0,0 +1,47 @@
+/**
+ * Copyright (c) 2014, Analog Devices, Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted (subject to the limitations in the
+ * disclaimer below) provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * - Neither the name of Analog Devices, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
+ * GRANTED BY THIS LICENSE.  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
+ * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/**
+ * \author Jim Paris <jim.paris@rigado.com>
+ */
+
+#ifndef MTARCH_H_
+#define MTARCH_H_
+
+/* Multithreading is currently unimplemented for ARM Cortex-M3 */
+
+struct mtarch_thread {
+  short mt_thread;
+};
+
+#endif /* MTARCH_H_ */

cpu/arm/aducrf101/rtimer-arch.c

@@ -0,0 +1,59 @@
+/**
+ * Copyright (c) 2014, Analog Devices, Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted (subject to the limitations in the
+ * disclaimer below) provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * - Neither the name of Analog Devices, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
+ * GRANTED BY THIS LICENSE.  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
+ * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/**
+ * \author Jim Paris <jim.paris@rigado.com>
+ */
+
+#include "rtimer-arch.h"
+
+void
+rtimer_arch_init(void)
+{
+}
+/*---------------------------------------------------------------------------*/
+void
+rtimer_arch_schedule(rtimer_clock_t t)
+{
+}
+/*---------------------------------------------------------------------------*/
+void
+rtimer_arch_set(rtimer_clock_t t)
+{
+}
+/*---------------------------------------------------------------------------*/
+rtimer_clock_t
+rtimer_arch_now(void)
+{
+  return 0;
+}

cpu/arm/aducrf101/rtimer-arch.h

@@ -0,0 +1,47 @@
+/**
+ * Copyright (c) 2014, Analog Devices, Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted (subject to the limitations in the
+ * disclaimer below) provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * - Neither the name of Analog Devices, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
+ * GRANTED BY THIS LICENSE.  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
+ * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/**
+ * \author Jim Paris <jim.paris@rigado.com>
+ */
+
+#ifndef __RTIMER_ARCH_H__
+#define __RTIMER_ARCH_H__
+
+#include <stdint.h>
+
+#define RTIMER_ARCH_SECOND (1000)
+
+#include "sys/rtimer.h"
+
+#endif /* __RTIMER_ARCH_H__ */

cpu/arm/aducrf101/slip-arch.c

@@ -0,0 +1,60 @@
+/**
+ * Copyright (c) 2014, Analog Devices, Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted (subject to the limitations in the
+ * disclaimer below) provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * - Neither the name of Analog Devices, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
+ * GRANTED BY THIS LICENSE.  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
+ * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/**
+ * \author Jim Paris <jim.paris@rigado.com>
+ */
+
+#include <stdio.h>
+
+#include "contiki.h"
+#include "dev/slip.h"
+#include "uart.h"
+
+/*---------------------------------------------------------------------------*/
+void
+slip_arch_writeb(unsigned char c)
+{
+  uart_put(c);
+}
+/*---------------------------------------------------------------------------*/
+/**
+ * Initalize the RS232 port and the SLIP driver.
+ *
+ */
+void
+slip_arch_init(unsigned long ubr)
+{
+  uart_set_input(slip_input_byte);
+}
+/*---------------------------------------------------------------------------*/