[target][platform] Nordic nrf51xxx platform support and test projects

platform/nrf51xxx/debug.c

@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2012 Travis Geiselbrecht
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include <stdarg.h>
+#include <reg.h>
+#include <debug.h>
+#include <stdio.h>
+#include <kernel/thread.h>
+#include <dev/uart.h>
+#include <arch/ops.h>
+#include <arch/arm/cm.h>
+#include <platform/debug.h>
+#include <target/debugconfig.h>
+
+
+
+void nrf51_debug_early_init(void)
+{
+	uart_init_early();
+}
+
+/* later in the init process */
+void nrf51_debug_init(void)
+{
+	uart_init();
+}
+
+
+
+void platform_dputc(char c)
+{
+	if (c == '\n')
+		uart_putc(DEBUG_UART, '\r');
+	uart_putc(DEBUG_UART, c);
+}
+
+int platform_dgetc(char *c, bool wait)
+{
+	int ret = uart_getc(DEBUG_UART, wait);
+	if (ret == -1)
+		return -1;
+	*c = ret;
+	return 0;
+}
+

platform/nrf51xxx/gpio.c

@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2015 Eric Holland
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include <debug.h>
+#include <assert.h>
+#include <dev/gpio.h>
+#include <platform/nrf51.h>
+#include <platform/gpio.h>
+
+int gpio_config(unsigned nr, unsigned flags)
+{
+    DEBUG_ASSERT(nr <= NRF_MAX_PIN_NUMBER);
+
+    unsigned init;
+
+    if (flags & GPIO_OUTPUT) {
+
+            NRF_GPIO->PIN_CNF[nr] = GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos     | \
+                                    GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos  | \
+                                    GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos   | \
+                                    GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos;
+    } else { // GPIO_INPUT
+		if (flags & GPIO_PULLUP) {
+            init    =   GPIO_PIN_CNF_PULL_Pullup << GPIO_PIN_CNF_PULL_Pos;
+        } else if (flags & GPIO_PULLDOWN) {
+            init    =   GPIO_PIN_CNF_PULL_Pulldown << GPIO_PIN_CNF_PULL_Pos;
+		} else {
+            init    =   GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos;
+		}
+        NRF_GPIO->PIN_CNF[nr] = GPIO_PIN_CNF_DIR_Input      <<  GPIO_PIN_CNF_DIR_Pos    | \
+                                GPIO_PIN_CNF_INPUT_Connect  <<  GPIO_PIN_CNF_INPUT_Pos  | \
+                                init;
+	}
+	return 0;
+}
+
+void gpio_set(unsigned nr, unsigned on)
+{
+        DEBUG_ASSERT(nr <= NRF_MAX_PIN_NUMBER);
+
+        if (on > 0) {
+            NRF_GPIO->OUTSET = 1 << nr;
+        } else {
+            NRF_GPIO->OUTCLR = 1 << nr;
+        }
+}
+
+int gpio_get(unsigned nr)
+{
+        DEBUG_ASSERT( nr <= NRF_MAX_PIN_NUMBER );
+
+        if ( NRF_GPIO->IN & ( 1 << nr) ) {
+               return 1;
+         } else {
+               return 0;
+         }
+}
+

platform/nrf51xxx/include/platform/gpio.h

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2015 Eric Holland
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __PLATFORM_NRF51_GPIO_H
+#define __PLATFORM_NRF51_GPIO_H
+
+#define NRF_MAX_PIN_NUMBER 31
+
+#endif

platform/nrf51xxx/include/platform/nrf51.h

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2015 Eric Holland
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef __PLATFORM_NRF51_H
+#define __PLATFORM_NRF51_H
+
+#include <platform/nrf518xx.h>
+
+void nrf51_debug_early_init(void);
+void nrf51_debug_init(void);
+void nrf51_timer_early_init(void);
+void nrf51_timer_init(void);
+void nrf51_gpio_early_init(void);
+void nrf51_flash_nor_early_init(void);
+void nrf51_flash_nor_init(void);
+
+#endif
+

platform/nrf51xxx/include/platform/platform_cm.h

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2012 Travis Geiselbrecht
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef __PLATFORM_CM_H
+#define __PLATFORM_CM_H
+
+#include <platform/nrf518xx.h>
+
+#endif
+

platform/nrf51xxx/include/platform/system_nrf51.h

@@ -0,0 +1,69 @@
+/* Copyright (c) 2015, Nordic Semiconductor ASA
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted 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 Nordic Semiconductor ASA nor the names of its
+ *     contributors may be used to endorse or promote products derived from
+ *     this software without specific prior written permission.
+ *
+ * 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 HOLDER 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 SYSTEM_NRF51_H
+#define SYSTEM_NRF51_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+
+
+extern uint32_t SystemCoreClock;    /*!< System Clock Frequency (Core Clock)  */
+
+/**
+ * Initialize the system
+ *
+ * @param  none
+ * @return none
+ *
+ * @brief  Setup the microcontroller system.
+ *         Initialize the System and update the SystemCoreClock variable.
+ */
+extern void SystemInit (void);
+
+/**
+ * Update SystemCoreClock variable
+ *
+ * @param  none
+ * @return none
+ *
+ * @brief  Updates the SystemCoreClock with current core Clock 
+ *         retrieved from cpu registers.
+ */
+extern void SystemCoreClockUpdate (void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SYSTEM_NRF51_H */

platform/nrf51xxx/init.c

@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2012-2014 Travis Geiselbrecht
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include <err.h>
+#include <debug.h>
+#include <arch/arm/cm.h>
+#include <dev/uart.h>
+#include <platform.h>
+#include <platform/nrf51.h>
+#include <platform/system_nrf51.h>
+
+
+
+void platform_early_init(void)
+{
+	// Crank up the clock before initing timers.
+	SystemInit();
+    arm_cm_systick_init(32768);
+}
+
+void platform_init(void)
+{
+    dprintf(SPEW, "Nordic nrf51xxx platform for lk...\n");
+    dprintf(SPEW, "\tFlash: %d pages of %d bytes each (%dk bytes total)\n", \
+        NRF_FICR->CODESIZE, NRF_FICR->CODEPAGESIZE, \
+        (NRF_FICR->CODESIZE * NRF_FICR->CODEPAGESIZE)>>10);
+    dprintf(SPEW, "\tRAM: %d blocks of %d bytes each (%dk bytes total)\n", \
+        NRF_FICR->NUMRAMBLOCK, NRF_FICR->SIZERAMBLOCKS, \
+        (NRF_FICR->NUMRAMBLOCK * NRF_FICR->SIZERAMBLOCKS)>>10);
+    dprintf(SPEW, "\tRadio MAC address  %02x:%02x:%02x:%02x:%02x:%02x\n", \
+        (NRF_FICR->DEVICEADDR[1] >> 8) & 0xFF, \
+        (NRF_FICR->DEVICEADDR[1]) & 0xFF, \
+        (NRF_FICR->DEVICEADDR[0] >> 24) & 0xFF, \
+        (NRF_FICR->DEVICEADDR[0] >> 16) & 0xFF, \
+        (NRF_FICR->DEVICEADDR[0] >>  8) & 0xFF, \
+        (NRF_FICR->DEVICEADDR[0] >>  0) & 0xFF);
+    dprintf(SPEW, "\tHWID: 0x%04x\n",NRF_FICR->CONFIGID & 0x0000ffff);
+
+}

platform/nrf51xxx/rules.mk

@@ -0,0 +1,59 @@
+LOCAL_DIR := $(GET_LOCAL_DIR)
+
+MODULE := $(LOCAL_DIR)
+
+# ROMBASE, MEMBASE, and MEMSIZE are required for the linker script
+ROMBASE := 0x0
+MEMBASE := 0x20000000
+# can be overridden by target
+
+ARCH := arm
+ARM_CPU := cortex-m0
+
+ifeq ($(NRF51_CHIP),nrf51822-qfaa)
+GLOBAL_DEFINES +=
+MEMSIZE ?= 16384
+endif
+ifeq ($(NRF51_CHIP),nrf51822-ceaa)
+GLOBAL_DEFINES +=
+MEMSIZE ?= 16384
+endif
+ifeq ($(NRF51_CHIP),nrf51822-qfab)
+GLOBAL_DEFINES +=
+MEMSIZE ?= 16384
+endif
+ifeq ($(NRF51_CHIP),nrf51822-cdab)
+GLOBAL_DEFINES +=
+MEMSIZE ?= 16384
+endif
+ifeq ($(NRF51_CHIP),nrf51822-qfac)
+GLOBAL_DEFINES +=
+MEMSIZE ?= 32768
+endif
+ifeq ($(NRF51_CHIP),nrf51822-cfac)
+GLOBAL_DEFINES +=
+MEMSIZE ?= 32768
+endif
+
+GLOBAL_INCLUDES += $(LOCAL_DIR)
+
+GLOBAL_DEFINES += \
+	MEMSIZE=$(MEMSIZE)
+
+MODULE_SRCS += \
+	$(LOCAL_DIR)/init.c \
+	$(LOCAL_DIR)/debug.c \
+	$(LOCAL_DIR)/uart.c \
+	$(LOCAL_DIR)/vectab.c \
+	$(LOCAL_DIR)/gpio.c \
+    $(LOCAL_DIR)/timer.c \
+	$(LOCAL_DIR)/system_nrf51.c
+
+
+LINKER_SCRIPT += \
+	$(BUILDDIR)/system-twosegment.ld
+
+MODULE_DEPS += \
+	lib/cbuf
+
+include make/module.mk

platform/nrf51xxx/system_nrf51.c

@@ -0,0 +1,121 @@
+/* Copyright (c) 2015, Nordic Semiconductor ASA
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted 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 Nordic Semiconductor ASA nor the names of its
+ *     contributors may be used to endorse or promote products derived from
+ *     this software without specific prior written permission.
+ *
+ * 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 HOLDER 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.
+ *
+ */
+
+/* NOTE: Template files (including this one) are application specific and therefore expected to 
+   be copied into the application project folder prior to its use! */
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <platform/nrf51.h>
+#include <platform/system_nrf51.h>
+
+/*lint ++flb "Enter library region" */
+
+
+#define __SYSTEM_CLOCK      (16000000UL)     /*!< nRF51 devices use a fixed System Clock Frequency of 16MHz */
+
+static bool is_manual_peripheral_setup_needed(void);
+static bool is_disabled_in_debug_needed(void);
+
+
+#if defined ( __CC_ARM )
+    uint32_t SystemCoreClock __attribute__((used)) = __SYSTEM_CLOCK;  
+#elif defined ( __ICCARM__ )
+    __root uint32_t SystemCoreClock = __SYSTEM_CLOCK;
+#elif defined   ( __GNUC__ )
+    uint32_t SystemCoreClock __attribute__((used)) = __SYSTEM_CLOCK;
+#endif
+
+void SystemCoreClockUpdate(void)
+{
+    SystemCoreClock = __SYSTEM_CLOCK;
+}
+
+void SystemInit(void)
+{
+    /* If desired, switch off the unused RAM to lower consumption by the use of RAMON register.
+       It can also be done in the application main() function. */
+
+    /* Prepare the peripherals for use as indicated by the PAN 26 "System: Manual setup is required
+       to enable the use of peripherals" found at Product Anomaly document for your device found at
+       https://www.nordicsemi.com/. The side effect of executing these instructions in the devices 
+       that do not need it is that the new peripherals in the second generation devices (LPCOMP for
+       example) will not be available. */
+    if (is_manual_peripheral_setup_needed())
+    {
+        *(uint32_t volatile *)0x40000504 = 0xC007FFDF;
+        *(uint32_t volatile *)0x40006C18 = 0x00008000;
+    }
+    
+    /* Disable PROTENSET registers under debug, as indicated by PAN 59 "MPU: Reset value of DISABLEINDEBUG
+       register is incorrect" found at Product Anomaly document four your device found at 
+       https://www.nordicsemi.com/. There is no side effect of using these instruction if not needed. */
+    if (is_disabled_in_debug_needed())
+    {
+        NRF_MPU->DISABLEINDEBUG = MPU_DISABLEINDEBUG_DISABLEINDEBUG_Disabled << MPU_DISABLEINDEBUG_DISABLEINDEBUG_Pos;
+    }
+}
+
+
+static bool is_manual_peripheral_setup_needed(void) 
+{
+    if ((((*(uint32_t *)0xF0000FE0) & 0x000000FF) == 0x1) && (((*(uint32_t *)0xF0000FE4) & 0x0000000F) == 0x0))
+    {
+        if ((((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x00) && (((*(uint32_t *)0xF0000FEC) & 0x000000F0) == 0x0))
+        {
+            return true;
+        }
+        if ((((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x10) && (((*(uint32_t *)0xF0000FEC) & 0x000000F0) == 0x0))
+        {
+            return true;
+        }
+        if ((((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x30) && (((*(uint32_t *)0xF0000FEC) & 0x000000F0) == 0x0))
+        {
+            return true;
+        }
+    }
+    
+    return false;
+}
+
+static bool is_disabled_in_debug_needed(void) 
+{
+    if ((((*(uint32_t *)0xF0000FE0) & 0x000000FF) == 0x1) && (((*(uint32_t *)0xF0000FE4) & 0x0000000F) == 0x0))
+    {
+        if ((((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x40) && (((*(uint32_t *)0xF0000FEC) & 0x000000F0) == 0x0))
+        {
+            return true;
+        }
+    }
+    
+    return false;
+}
+
+/*lint --flb "Leave library region" */

platform/nrf51xxx/timer.c

@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2015 Eric Holland
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include <err.h>
+#include <debug.h>
+#include <trace.h>
+#include <arch/arm/cm.h>
+#include <platform.h>
+#include <platform/nrf51.h>
+#include <platform/system_nrf51.h>
+#include <platform/timer.h>
+#include <sys/types.h>
+
+
+static volatile uint64_t ticks;
+static uint32_t tick_rate = 0;
+static uint32_t tick_rate_mhz = 0;
+static lk_time_t tick_interval_ms;
+
+static platform_timer_callback cb;
+static void *cb_args;
+
+typedef enum handler_return (*platform_timer_callback)(void *arg, lk_time_t now);
+
+status_t platform_set_periodic_timer(platform_timer_callback callback, void *arg, lk_time_t interval)
+{
+
+    cb = callback;
+    cb_args = arg;
+
+    tick_interval_ms = interval;
+
+    uint32_t ticks = tick_rate / ( 1000 / interval );
+
+    NRF_CLOCK->LFCLKSRC =  CLOCK_LFCLKSRC_SRC_Xtal << CLOCK_LFCLKSRC_SRC_Pos;
+    NRF_CLOCK->TASKS_LFCLKSTART = 1;
+
+    NRF_RTC1->PRESCALER = ticks;
+    NRF_RTC1->INTENSET  = RTC_INTENSET_TICK_Enabled << RTC_INTENSET_TICK_Pos;
+
+    NRF_RTC1->EVENTS_TICK = 0;
+    NRF_RTC1->TASKS_START = 1;
+    NVIC_EnableIRQ(RTC1_IRQn);
+
+    return NO_ERROR;
+}
+
+lk_time_t current_time(void)
+{
+    uint64_t t;
+
+    do {
+        t = ticks;
+    } while (ticks != t);
+
+    return t * tick_interval_ms;
+}
+
+lk_bigtime_t current_time_hires(void)
+{
+    return current_time() * 1000;
+}
+
+void nrf51_RTC1_IRQ(void)
+{
+    ticks++;
+    arm_cm_irq_entry();
+
+    NRF_RTC1->EVENTS_TICK = 0;
+
+    bool resched = false;
+    if (cb) {
+        lk_time_t now = current_time();
+        if (cb(cb_args, now) == INT_RESCHEDULE)
+            resched = true;
+    }
+    arm_cm_irq_exit(resched);
+}
+
+void arm_cm_systick_init(uint32_t mhz)
+{
+    tick_rate = mhz;
+    tick_rate_mhz = mhz / 1000000;
+}
+

platform/nrf51xxx/uart.c

@@ -0,0 +1,128 @@
+/*
+ * Copyright (c) 2015 Eric Holland
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include <stdarg.h>
+#include <reg.h>
+#include <debug.h>
+#include <stdio.h>
+#include <assert.h>
+#include <err.h>
+#include <lib/cbuf.h>
+#include <arch/arm/cm.h>
+#include <arch/ops.h>
+#include <dev/uart.h>
+#include <dev/gpio.h>
+#include <kernel/thread.h>
+#include <platform/debug.h>
+#include <platform/gpio.h>
+#include <target/debugconfig.h>
+#include <target/gpioconfig.h>
+
+#define RXBUF_SIZE 16
+
+//cbuf_t uart0_rx_buf;
+
+
+
+void uart_init_early(void)
+{
+#ifdef ENABLE_UART0
+
+#ifdef  UART0_TX_PIN
+    gpio_config(UART0_TX_PIN,GPIO_OUTPUT);
+    NRF_UART0->PSELTXD =   UART0_TX_PIN;
+#endif
+#ifdef  UART0_RX_PIN
+    gpio_config(UART0_RX_PIN,GPIO_INPUT);
+    NRF_UART0->PSELRXD =   UART0_RX_PIN;
+#endif
+
+    NRF_UART0->BAUDRATE =   UART_BAUDRATE_BAUDRATE_Baud115200   <<  UART_BAUDRATE_BAUDRATE_Pos;
+    NRF_UART0->CONFIG   =   UART_CONFIG_HWFC_Disabled << UART_CONFIG_HWFC_Pos | \
+                            UART_CONFIG_PARITY_Excluded << UART_CONFIG_PARITY_Pos;
+    NVIC_DisableIRQ(UART0_IRQn);
+    NRF_UART0->ENABLE   =   UART_ENABLE_ENABLE_Enabled << UART_ENABLE_ENABLE_Pos;
+    NRF_UART0->TXD      = 'E';
+    NRF_UART0->TASKS_STARTTX=1;
+    NRF_UART0->TASKS_STARTRX=1;
+#endif //ENABLE_UART0
+}
+
+void uart_init(void)
+{
+#ifdef ENABLE_UART0
+//    cbuf_initialize(&uart0_rx_buf, RXBUF_SIZE);
+//    NRF_UART0->INTENSET = UART_INTENSET_RXDRDY_Enabled << UART_INTENSET_RXDRDY_Pos;
+    NRF_UART0->EVENTS_RXDRDY = 0;
+//    NVIC_EnableIRQ(UART0_IRQn);
+    char c = NRF_UART0->RXD;
+    (void)c;
+#endif //ENABLE_UART0
+}
+
+void nrf51_UART0_IRQ(void)
+{
+//  char c;
+    arm_cm_irq_entry();
+/*
+	bool resched = false;
+	while ( NRF_UART0->EVENTS_RXDRDY > 0 ) {
+        NRF_UART0->EVENTS_RXDRDY = 0;
+        c = NRF_UART0->RXD;
+		if (!cbuf_space_avail(&uart0_rx_buf)) {
+			break;
+		}
+		cbuf_write_char(&uart0_rx_buf, c, false);
+		resched = true;
+	}
+*/
+	arm_cm_irq_exit(false);
+}
+
+int uart_putc(int port, char c)
+{
+	while (NRF_UART0->EVENTS_TXDRDY == 0);
+	NRF_UART0->TXD = c;
+    NRF_UART0->EVENTS_TXDRDY = 0;
+	return 1;
+}
+
+int uart_getc(int port, bool wait)
+{
+    do {
+	    if (NRF_UART0->EVENTS_RXDRDY > 0) {
+                NRF_UART0->EVENTS_RXDRDY=0;
+                return NRF_UART0->RXD;
+        }
+    } while (wait);
+    return -1;
+}
+
+void uart_flush_tx(int port) {}
+
+void uart_flush_rx(int port) {}
+
+void uart_init_port(int port, uint baud)
+{
+	// TODO - later
+	PANIC_UNIMPLEMENTED;
+}

platform/nrf51xxx/vectab.c

@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2012 Travis Geiselbrecht
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include <debug.h>
+#include <compiler.h>
+#include <arch/arm/cm.h>
+#include <lib/cbuf.h>
+#include <platform/nrf51.h>
+#include <target/debugconfig.h>
+
+/* un-overridden irq handler */
+void nrf51_dummy_irq(void)
+{
+	arm_cm_irq_entry();
+	panic("unhandled irq\n");
+}
+
+/* a list of default handlers that are simply aliases to the dummy handler */
+#define DEFAULT_HANDLER(x) \
+void nrf51_##x(void) __WEAK_ALIAS("nrf51_dummy_irq");
+
+DEFAULT_HANDLER(POWER_CLOCK_IRQ);
+DEFAULT_HANDLER(RADIO_IRQ);
+DEFAULT_HANDLER(UART0_IRQ);
+DEFAULT_HANDLER(SPI0_TWI0_IRQ);
+DEFAULT_HANDLER(SPI1_TWI1_IRQ);
+
+DEFAULT_HANDLER(RESERVED_IRQ);
+DEFAULT_HANDLER(GPIOTE_IRQ);
+DEFAULT_HANDLER(ADC_IRQ);
+DEFAULT_HANDLER(TIMER0_IRQ);
+DEFAULT_HANDLER(TIMER1_IRQ);
+DEFAULT_HANDLER(TIMER2_IRQ);
+
+DEFAULT_HANDLER(RTC0_IRQ);
+DEFAULT_HANDLER(TEMP_IRQ);
+DEFAULT_HANDLER(RNG_IRQ);
+DEFAULT_HANDLER(ECB_IRQ);
+DEFAULT_HANDLER(CCM_AAR_IRQ);
+
+DEFAULT_HANDLER(WDT_IRQ);
+DEFAULT_HANDLER(RTC1_IRQ);
+DEFAULT_HANDLER(QDEC_IRQ);
+DEFAULT_HANDLER(LPCOMP_IRQ);
+DEFAULT_HANDLER(SWI0_IRQ);
+
+DEFAULT_HANDLER(SWI1_IRQ);
+DEFAULT_HANDLER(SWI2_IRQ);
+DEFAULT_HANDLER(SWI3_IRQ);
+DEFAULT_HANDLER(SWI4_IRQ);
+DEFAULT_HANDLER(SWI5_IRQ);
+
+
+#define VECTAB_ENTRY(x) [x##n] = nrf51_##x
+
+/* appended to the end of the main vector table */
+const void * const __SECTION(".text.boot.vectab2") vectab2[] = {
+
+VECTAB_ENTRY(POWER_CLOCK_IRQ),
+VECTAB_ENTRY(RADIO_IRQ),
+VECTAB_ENTRY(UART0_IRQ),
+VECTAB_ENTRY(SPI0_TWI0_IRQ),
+VECTAB_ENTRY(SPI1_TWI1_IRQ),
+VECTAB_ENTRY(RESERVED_IRQ),
+VECTAB_ENTRY(GPIOTE_IRQ),
+VECTAB_ENTRY(ADC_IRQ),
+VECTAB_ENTRY(TIMER0_IRQ),
+VECTAB_ENTRY(TIMER1_IRQ),
+VECTAB_ENTRY(TIMER2_IRQ),
+
+VECTAB_ENTRY(RTC0_IRQ),
+VECTAB_ENTRY(TEMP_IRQ),
+VECTAB_ENTRY(RNG_IRQ),
+VECTAB_ENTRY(ECB_IRQ),
+VECTAB_ENTRY(CCM_AAR_IRQ),
+
+VECTAB_ENTRY(WDT_IRQ),
+VECTAB_ENTRY(RTC1_IRQ),
+VECTAB_ENTRY(QDEC_IRQ),
+VECTAB_ENTRY(LPCOMP_IRQ),
+VECTAB_ENTRY(SWI0_IRQ),
+
+VECTAB_ENTRY(SWI1_IRQ),
+VECTAB_ENTRY(SWI2_IRQ),
+VECTAB_ENTRY(SWI3_IRQ),
+VECTAB_ENTRY(SWI4_IRQ),
+VECTAB_ENTRY(SWI5_IRQ),
+};
+

project/nrf51-pca10000-test.mk

@@ -0,0 +1,7 @@
+MODULES += \
+	app/shell \
+
+
+
+
+include project/target/nrf-pca10000.mk

project/nrf51-pca10028-test.mk

@@ -0,0 +1,8 @@
+MODULES += \
+	app/shell \
+    app/tests \
+
+
+
+
+include project/target/nrf-pca10028.mk

project/target/nrf-pca10000.mk

@@ -0,0 +1,3 @@
+LOCAL_DIR := $(GET_LOCAL_DIR)
+
+TARGET := nrf-pca10000

project/target/nrf-pca10028.mk

@@ -0,0 +1,3 @@
+LOCAL_DIR := $(GET_LOCAL_DIR)
+
+TARGET := nrf-pca10028

target/nrf-pca10000/include/target/debugconfig.h

@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2012 Travis Geiselbrecht
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef __TARGET_DEBUGCONFIG_H
+#define __TARGET_DEBUGCONFIG_H
+
+#define DEBUG_UART 1
+
+#endif

target/nrf-pca10000/include/target/gpioconfig.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2012 Travis Geiselbrecht
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef __TARGET_GPIOCONFIG_H
+#define __TARGET_GPIOCONFIG_H
+
+#include <platform/gpio.h>
+
+#define GPIO_LED1   21
+#define GPIO_LED2   22
+#define GPIO_LED3   23
+
+#define UART0_RTS_PIN   8
+#define UART0_TX_PIN    9
+#define UART0_RX_PIN    11
+
+
+
+#endif

target/nrf-pca10000/init.c

@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2012 Travis Geiselbrecht
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include <err.h>
+#include <debug.h>
+#include <target.h>
+#include <compiler.h>
+#include <dev/gpio.h>
+#include <kernel/timer.h>
+#include <platform/gpio.h>
+#include <platform/nrf51.h>
+#include <target/gpioconfig.h>
+
+
+static timer_t  blinktimer;
+static bool heartbeat = false;
+
+void target_early_init(void)
+{
+    NRF_CLOCK->XTALFREQ = CLOCK_XTALFREQ_XTALFREQ_16MHz;
+
+	/* configure the usart1 pins */
+	gpio_config(GPIO_LED1, GPIO_OUTPUT);
+    gpio_config(GPIO_LED2, GPIO_OUTPUT);
+    gpio_config(GPIO_LED3, GPIO_OUTPUT);
+
+	gpio_set(GPIO_LED1,1);
+	gpio_set(GPIO_LED2,1);
+	gpio_set(GPIO_LED3,1);
+
+    gpio_config(UART0_RTS_PIN, GPIO_OUTPUT);
+    gpio_set(UART0_RTS_PIN,0);              //placate flow control requirements of pca10000
+
+	nrf51_debug_early_init();
+}
+
+static enum handler_return blinker(timer_t * timer, lk_time_t now, void * args){
+
+    if (heartbeat) {
+        heartbeat = false;
+        gpio_set(GPIO_LED1,1); //turn off led
+        timer_set_oneshot(timer,950, blinker, NULL);
+    } else {
+        heartbeat = true;
+        gpio_set(GPIO_LED1,0);
+        timer_set_oneshot(timer,50, blinker, NULL);
+    }
+    return INT_RESCHEDULE;
+}
+
+
+
+
+void target_init(void)
+{
+	nrf51_debug_init();
+    dprintf(SPEW,"Target: PCA10000 DK...\n");
+    timer_initialize(&blinktimer);
+    timer_set_oneshot(&blinktimer, 1000, blinker, NULL);
+}

target/nrf-pca10000/rules.mk

@@ -0,0 +1,17 @@
+LOCAL_DIR := $(GET_LOCAL_DIR)
+
+MODULE := $(LOCAL_DIR)
+
+NRF51_CHIP := nrf51822-qfaa
+
+PLATFORM := nrf51xxx
+
+GLOBAL_DEFINES += \
+	ENABLE_UART0=1 \
+	
+
+MODULE_SRCS += \
+	$(LOCAL_DIR)/init.c
+
+include make/module.mk
+

target/nrf-pca10028/include/target/debugconfig.h

@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2012 Travis Geiselbrecht
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef __TARGET_DEBUGCONFIG_H
+#define __TARGET_DEBUGCONFIG_H
+
+#define DEBUG_UART 1
+
+#endif

target/nrf-pca10028/include/target/gpioconfig.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2012 Travis Geiselbrecht
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef __TARGET_GPIOCONFIG_H
+#define __TARGET_GPIOCONFIG_H
+
+#include <platform/gpio.h>
+
+#define GPIO_LED1   21
+#define GPIO_LED2   22
+#define GPIO_LED3   23
+#define GPIO_LED4   24
+
+#define UART0_TX_PIN    9
+#define UART0_RX_PIN    11
+
+
+
+#endif

target/nrf-pca10028/init.c

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2012 Travis Geiselbrecht
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include <err.h>
+#include <debug.h>
+#include <target.h>
+#include <compiler.h>
+#include <dev/gpio.h>
+#include <platform/gpio.h>
+#include <platform/nrf51.h>
+#include <target/gpioconfig.h>
+
+void target_early_init(void)
+{
+	/* configure the usart1 pins */
+	gpio_config(GPIO_LED1, GPIO_OUTPUT);
+    gpio_config(GPIO_LED2, GPIO_OUTPUT);
+    gpio_config(GPIO_LED3, GPIO_OUTPUT);
+    gpio_config(GPIO_LED4, GPIO_OUTPUT);
+
+	gpio_set(GPIO_LED1,1);
+	gpio_set(GPIO_LED2,1);
+	gpio_set(GPIO_LED3,0);
+	gpio_set(GPIO_LED4,0);
+
+	nrf51_debug_early_init();
+}
+
+
+void target_init(void)
+{
+	nrf51_debug_init();
+    dprintf(SPEW,"Target: PCA10028 DK...\n");
+}

target/nrf-pca10028/rules.mk

@@ -0,0 +1,17 @@
+LOCAL_DIR := $(GET_LOCAL_DIR)
+
+MODULE := $(LOCAL_DIR)
+
+NRF51_CHIP := nrf51822-qfac
+
+PLATFORM := nrf51xxx
+
+GLOBAL_DEFINES += \
+	ENABLE_UART0=1 \
+	
+
+MODULE_SRCS += \
+	$(LOCAL_DIR)/init.c
+
+include make/module.mk
+