[nrf52] Platform and sample target support for Nordic NRF52 (cortex-M4)

target/nrf-pca10040/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/nrf52.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);
+
+    nrf52_debug_early_init();
+}
+
+
+void target_init(void)
+{
+    nrf52_debug_init();
+    dprintf(SPEW,"Target: PCA10040 DK...\n");
+}