4 files changed, 105 insertions, 0 deletions
diff --git a/samples/nanokernel/apps/w25q80bl/Makefile b/samples/nanokernel/apps/w25q80bl/Makefile
new file mode 100644
index 000000000..f2e25a17f
--- /dev/null
+++ b/samples/nanokernel/apps/w25q80bl/Makefile
@@ -0,0 +1,5 @@
+KERNEL_TYPE = nano
+BOARD ?= qemu_x86
+CONF_FILE = prj.conf
+
+include ${ZEPHYR_BASE}/Makefile.inc
diff --git a/samples/nanokernel/apps/w25q80bl/prj.conf b/samples/nanokernel/apps/w25q80bl/prj.conf
new file mode 100644
index 000000000..5616bfc48
--- /dev/null
+++ b/samples/nanokernel/apps/w25q80bl/prj.conf
@@ -0,0 +1 @@
+CONFIG_SPI=y
diff --git a/samples/nanokernel/apps/w25q80bl/src/Makefile b/samples/nanokernel/apps/w25q80bl/src/Makefile
new file mode 100644
index 000000000..b666967fd
--- /dev/null
+++ b/samples/nanokernel/apps/w25q80bl/src/Makefile
@@ -0,0 +1 @@
+obj-y += main.o
diff --git a/samples/nanokernel/apps/w25q80bl/src/main.c b/samples/nanokernel/apps/w25q80bl/src/main.c
new file mode 100644
index 000000000..4e93f7086
--- /dev/null
+++ b/samples/nanokernel/apps/w25q80bl/src/main.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2016 Intel Corporation.
+ *
+ * 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 <zephyr.h>
+
+#include <device.h>
+#include <spi.h>
+
+#include <misc/printk.h>
+
+#if (!defined(CONFIG_SPI_QMSI_CS_GPIO) || !defined(CONFIG_SPI_QMSI_CS_GPIO))
+#error "This sample requires the GPIO pin as Chip Select feature"
+#endif
+
+#if defined(CONFIG_SPI_QMSI_PORT_0_DRV_NAME)
+#define SPI_PORT_0 CONFIG_SPI_QMSI_PORT_0_DRV_NAME
+#elif defined(CONFIG_SPI_DW_PORT_0_DRV_NAME)
+#define SPI_PORT_0 CONFIG_SPI_DW_PORT_0_DRV_NAME
+#else
+#error "Unknown SPI driver implementation"
+#endif
+
+#define W25Q80BL_MANUFACTURER_ID 0x90
+
+static uint8_t rx_buffer[6], tx_buffer[6];
+
+int w25q80bl_read_id(struct device *dev, uint8_t *manufacturer, uint8_t *deviceid)
+{
+	int err;
+
+	tx_buffer[0] = W25Q80BL_MANUFACTURER_ID;
+
+	err = spi_transceive(dev, tx_buffer, sizeof(tx_buffer),
+			     rx_buffer, sizeof(rx_buffer));
+	if (err) {
+		printk("Error during SPI transfer\n");
+		return DEV_FAIL;
+	}
+
+	if (manufacturer)
+		*manufacturer = rx_buffer[4];
+
+	if (deviceid)
+		*deviceid = rx_buffer[5];
+
+	return 0;
+}
+
+int main(void)
+{
+	struct spi_config config = { 0 };
+	struct device *spi_mst_0 = device_get_binding(SPI_PORT_0);
+	uint8_t manufacturer, device_id;
+	int err;
+
+	printk("SPI Example application\n");
+
+	if (!spi_mst_0)
+		return DEV_FAIL;
+
+	config.config = SPI_MODE_CPOL | SPI_MODE_CPHA | SPI_WORD(8);
+	config.max_sys_freq = 256;
+
+	err = spi_configure(spi_mst_0, &config);
+	if (err) {
+		printk("Could not configure SPI device\n");
+		return DEV_FAIL;
+	}
+
+	err = spi_slave_select(spi_mst_0, 1);
+	if (err) {
+		printk("Could not select SPI slave\n");
+		return DEV_FAIL;
+	}
+
+	err = w25q80bl_read_id(spi_mst_0, &manufacturer, &device_id);
+	if (err) {
+		printk("Could not get Manufacturer and Device ID from SPI Flash\n");
+		return DEV_FAIL;
+	}
+
+	printk("SPI Flash Manufacturer %x Device Id %x\n", manufacturer, device_id);
+
+	return DEV_OK;
+}