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+/****************************************************************************
+ * px4/sensors/test_gpio.c
+ *
+ * Copyright (C) 2012 PX4 Development Team. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. Neither the name NuttX 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 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/arch.h>
+
+#include <sys/types.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <debug.h>
+
+#include <nuttx/spi.h>
+
+#include "tests.h"
+
+#include <nuttx/analog/adc.h>
+
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: test_gpio
+ ****************************************************************************/
+
+int test_adc(int argc, char *argv[])
+{
+ int fd0;
+ int ret = 0;
+ //struct adc_msg_s sample[4],sample2[4],sample3[4],sample4[4],sample5[4],sample6[4],sample7[4],sample8[4],sample9[4];
+
+ struct adc_msg4_s {
+ uint8_t am_channel1; /* The 8-bit ADC Channel */
+ int32_t am_data1; /* ADC convert result (4 bytes) */
+ uint8_t am_channel2; /* The 8-bit ADC Channel */
+ int32_t am_data2; /* ADC convert result (4 bytes) */
+ uint8_t am_channel3; /* The 8-bit ADC Channel */
+ int32_t am_data3; /* ADC convert result (4 bytes) */
+ uint8_t am_channel4; /* The 8-bit ADC Channel */
+ int32_t am_data4; /* ADC convert result (4 bytes) */
+ } __attribute__((__packed__));;
+
+ struct adc_msg4_s sample1[4], sample2[4];
+
+ size_t readsize;
+ ssize_t nbytes, nbytes2;
+ int i;
+ int j;
+ int errval;
+
+ for (j = 0; j < 1; j++) {
+ char name[11];
+ sprintf(name, "/dev/adc%d", j);
+ fd0 = open(name, O_RDONLY | O_NONBLOCK);
+
+ if (fd0 < 0) {
+ printf("ADC: %s open fail\n", name);
+ return ERROR;
+
+ } else {
+ printf("Opened %s successfully\n", name);
+ }
+
+ /* first adc read round */
+ readsize = 4 * sizeof(struct adc_msg_s);
+ up_udelay(10000);//microseconds
+ nbytes = read(fd0, sample1, readsize);
+ up_udelay(10000);//microseconds
+ nbytes2 = read(fd0, sample2, readsize);
+// nbytes2 = read(fd0, sample3, readsize);
+// nbytes2 = read(fd0, sample4, readsize);
+// nbytes2 = read(fd0, sample5, readsize);
+// nbytes2 = read(fd0, sample6, readsize);
+// nbytes2 = read(fd0, sample7, readsize);
+// nbytes2 = read(fd0, sample8, readsize);
+ //nbytes2 = read(fd0, sample9, readsize);
+
+ /* Handle unexpected return values */
+
+ if (nbytes < 0) {
+ errval = errno;
+
+ if (errval != EINTR) {
+ message("read %s failed: %d\n",
+ name, errval);
+ errval = 3;
+ goto errout_with_dev;
+ }
+
+ message("\tInterrupted read...\n");
+
+ } else if (nbytes == 0) {
+ message("\tNo data read, Ignoring\n");
+ }
+
+ /* Print the sample data on successful return */
+
+ else {
+ int nsamples = nbytes / sizeof(struct adc_msg_s);
+
+ if (nsamples * sizeof(struct adc_msg_s) != nbytes) {
+ message("\tread size=%d is not a multiple of sample size=%d, Ignoring\n",
+ nbytes, sizeof(struct adc_msg_s));
+
+ } else {
+ message("Sample:");
+
+ for (i = 0; i < 1 ; i++) {
+ message("%d: channel: %d value: %d\n",
+ i, sample1[i].am_channel1, sample1[i].am_data1);
+ message("Sample:");
+ message("%d: channel: %d value: %d\n",
+ i, sample1[i].am_channel2, sample1[i].am_data2);
+ message("Sample:");
+ message("%d: channel: %d value: %d\n",
+ i, sample1[i].am_channel3, sample1[i].am_data3);
+ message("Sample:");
+ message("%d: channel: %d value: %d\n",
+ i, sample1[i].am_channel4, sample1[i].am_data4);
+ message("Sample:");
+ message("%d: channel: %d value: %d\n",
+ i + 1, sample2[i].am_channel1, sample2[i].am_data1);
+ message("Sample:");
+ message("%d: channel: %d value: %d\n",
+ i + 1, sample2[i].am_channel2, sample2[i].am_data2);
+ message("Sample:");
+ message("%d: channel: %d value: %d\n",
+ i + 1, sample2[i].am_channel3, sample2[i].am_data3);
+ message("Sample:");
+ message("%d: channel: %d value: %d\n",
+ i + 1, sample2[i].am_channel4, sample2[i].am_data4);
+// message("%d: channel: %d value: %d\n",
+// i, sample9[i].am_channel, sample9[i].am_data);
+ }
+ }
+ }
+ }
+
+ printf("\t ADC test successful.\n");
+
+errout_with_dev:
+
+ if (fd0 != 0) close(fd0);
+
+ return ret;
+}
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