4589f2c468
In many cases there is no need to define a macro for printing to the console, just use the correct variant directly. Jira: ZEP-240 Change-Id: I9952deda4bfc60424f01fca2443d037562d13d0d Signed-off-by: Anas Nashif <anas.nashif@intel.com>
94 lines
2.1 KiB
C
94 lines
2.1 KiB
C
/* adc.c - ADC test source file */
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/*
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* Copyright (c) 2015 Intel Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <zephyr.h>
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#include <device.h>
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#include <misc/byteorder.h>
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#include <adc.h>
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#include <misc/printk.h>
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#define SLEEPTIME 2
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#define SLEEPTICKS (SLEEPTIME * sys_clock_ticks_per_sec)
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#define ADC_DEVICE_NAME "ADC_0"
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/*
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* The analog input pin and channel number mapping
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* for Arduino 101 board.
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* A0 Channel 10
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* A1 Channel 11
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* A2 Channel 12
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* A3 Channel 13
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* A4 Channel 14
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*/
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#define CHANNEL 10
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#define BUFFER_SIZE 40
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static uint8_t seq_buffer[BUFFER_SIZE];
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static struct adc_seq_entry sample = {
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.sampling_delay = 12,
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.channel_id = CHANNEL,
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.buffer = seq_buffer,
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.buffer_length = BUFFER_SIZE,
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};
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static struct adc_seq_table table = {
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.entries = &sample,
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.num_entries = 1,
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};
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static void _print_sample_in_hex(uint8_t *buf, uint32_t length)
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{
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printk("Buffer content:\n");
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for (; length > 0; length -= 4, buf += 4) {
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printk("0x%x ", *((uint32_t *)buf));
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}
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printk("\n");
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}
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void main(void)
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{
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struct device *adc;
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struct nano_timer timer;
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uint32_t data[2] = {0, 0};
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printk("ADC sample started on %s\n", ADC_DEVICE_NAME);
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adc = device_get_binding(ADC_DEVICE_NAME);
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if (!adc) {
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printk("Cannot get adc controller\n");
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return;
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}
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nano_timer_init(&timer, data);
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adc_enable(adc);
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while (1) {
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if (adc_read(adc, &table) != 0) {
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printk("Sampling could not proceed, an error occurred\n");
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} else {
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printk("Sampling is done\n");
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_print_sample_in_hex(seq_buffer, BUFFER_SIZE);
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}
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nano_timer_start(&timer, SLEEPTICKS);
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nano_timer_test(&timer, TICKS_UNLIMITED);
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}
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adc_disable(adc);
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}
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