kopia lustrzana https://github.com/espressif/esp-idf
michael
rodzic
7c0020bfd0
commit
d30f3e7aa8
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/*
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Tests for the adc2 device driver
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*/
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#include "esp_system.h"
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#include "driver/adc.h"
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#include "driver/dac.h"
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#include "unity.h"
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#include "esp_system.h"
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#include "esp_event_loop.h"
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#include "esp_wifi.h"
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#include "esp_log.h"
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#include "nvs_flash.h"
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static const char* TAG = "test_adc2";
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#define DEFAULT_SSID "TEST_SSID"
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#define DEFAULT_PWD "TEST_PASS"
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static esp_err_t event_handler(void *ctx, system_event_t *event)
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{
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printf("ev_handle_called.\n");
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switch(event->event_id) {
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case SYSTEM_EVENT_STA_START:
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ESP_LOGI(TAG, "SYSTEM_EVENT_STA_START");
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//do not actually connect in test case
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//;
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break;
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case SYSTEM_EVENT_STA_GOT_IP:
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ESP_LOGI(TAG, "SYSTEM_EVENT_STA_GOT_IP");
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ESP_LOGI(TAG, "got ip:%s\n",
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ip4addr_ntoa(&event->event_info.got_ip.ip_info.ip));
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break;
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case SYSTEM_EVENT_STA_DISCONNECTED:
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ESP_LOGI(TAG, "SYSTEM_EVENT_STA_DISCONNECTED");
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TEST_ESP_OK(esp_wifi_connect());
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break;
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default:
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break;
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}
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return ESP_OK;
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}
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TEST_CASE("adc2 work with wifi","[adc]")
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{
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int read_raw;
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int target_value;
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//adc and dac init
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TEST_ESP_OK( dac_output_enable( DAC_CHANNEL_1 ));
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TEST_ESP_OK( dac_output_enable( DAC_CHANNEL_2 ));
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TEST_ESP_OK( dac_output_voltage( DAC_CHANNEL_1, 30 ));
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TEST_ESP_OK( dac_output_voltage( DAC_CHANNEL_2, 60 ));
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TEST_ESP_OK( adc2_config_channel_atten( ADC2_CHANNEL_8, ADC_ATTEN_0db ));
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TEST_ESP_OK( adc2_config_channel_atten( ADC2_CHANNEL_9, ADC_ATTEN_0db ));
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//init wifi
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printf("nvs init\n");
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esp_err_t r = nvs_flash_init();
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if (r == ESP_ERR_NVS_NO_FREE_PAGES) {
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printf("no free pages, erase..\n");
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TEST_ESP_OK(nvs_flash_erase());
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r = nvs_flash_init();
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}
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TEST_ESP_OK( r);
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tcpip_adapter_init();
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TEST_ESP_OK(esp_event_loop_init(event_handler, NULL));
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wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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TEST_ESP_OK(esp_wifi_init(&cfg));
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wifi_config_t wifi_config = {
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.sta = {
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.ssid = DEFAULT_SSID,
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.password = DEFAULT_PWD
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},
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};
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TEST_ESP_OK(esp_wifi_set_mode(WIFI_MODE_STA));
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TEST_ESP_OK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config));
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//test read value
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TEST_ESP_OK( adc2_get_raw( ADC2_CHANNEL_8, ADC_WIDTH_12Bit, &read_raw ));
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target_value = 30*4096*3/256; //3 = 3.3/1.1
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printf("dac set: %d, adc read: %d (target_value: %d)\n", 30, read_raw, target_value );
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TEST_ASSERT_INT_WITHIN( 600, target_value, read_raw );
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TEST_ESP_OK( adc2_get_raw( ADC2_CHANNEL_9, ADC_WIDTH_12Bit, &read_raw ));
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target_value = 60*4096*3/256;
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printf("dac set: %d, adc read: %d (target_value: %d)\n", 60, read_raw, target_value );
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TEST_ASSERT_INT_WITHIN( 600, target_value, read_raw );
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//now start wifi
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printf("wifi start...\n");
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TEST_ESP_OK(esp_wifi_start());
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//test reading during wifi on
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TEST_ASSERT_EQUAL( adc2_get_raw( ADC2_CHANNEL_8, ADC_WIDTH_12Bit, &read_raw ), ESP_ERR_TIMEOUT );
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TEST_ASSERT_EQUAL( adc2_get_raw( ADC2_CHANNEL_9, ADC_WIDTH_12Bit, &read_raw ), ESP_ERR_TIMEOUT );
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//wifi stop again
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printf("wifi stop...\n");
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TEST_ESP_OK( esp_wifi_stop() );
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TEST_ESP_OK(esp_wifi_deinit());
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nvs_flash_deinit();
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//test read value
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TEST_ESP_OK( adc2_get_raw( ADC2_CHANNEL_8, ADC_WIDTH_12Bit, &read_raw ));
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target_value = 30*4096*3/256; //3 = 3.3/1.1
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printf("dac set: %d, adc read: %d (target_value: %d)\n", 30, read_raw, target_value );
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TEST_ASSERT_INT_WITHIN( 600, target_value, read_raw );
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TEST_ESP_OK( adc2_get_raw( ADC2_CHANNEL_9, ADC_WIDTH_12Bit, &read_raw ));
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target_value = 60*4096*3/256;
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printf("dac set: %d, adc read: %d (target_value: %d)\n", 60, read_raw, target_value );
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TEST_ASSERT_INT_WITHIN( 600, target_value, read_raw );
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printf("test passed...\n");
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TEST_IGNORE_MESSAGE("this test case is ignored due to the critical memory leak of tcpip_adapter and event_loop.");
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}
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#
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# This is a project Makefile. It is assumed the directory this Makefile resides in is a
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# project subdirectory.
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#
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PROJECT_NAME := adc2
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include $(IDF_PATH)/make/project.mk
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# Example: ADC2
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This test code shows how to configure ADC2 and read the voltage connected to GPIO pin.
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### ADC2 functions:
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ADC1_CHANNEL_7: GPIO27, voltage range [0V..3.1V], the data range [0..4095],
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saturates at about 1.1V.
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DAC_CHANNEL_1: GPIO25, output range [0V..3.3V]
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### Test:
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Please choose the channel (GPIO) to output DAC signals and the channel to input
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signals to ADC by menuconfig:
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make menuconfig
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Then connect two pins by a wire directly.
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E.g. Choose GPIO27 for ADC and GPIO 25 for DAC in menuconfig (default option).
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Then connect them up.
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Connection of ADC and DAC to the same pin is also allowed. In this case, you don't
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have to connect by a wire externally. E.g. choose GPIO 26 for both ADC and DAC in
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menuconfig.
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@ -0,0 +1,61 @@
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menu "Example Configuration"
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choice ADC2_EXAMPLE_CHANNEL
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bool "ADC2 Channel Num"
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default ADC2_EXAMPLE_CHANNEL_7
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help
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The channel of ADC2 used in this example.
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config ADC2_EXAMPLE_CHANNEL_0
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bool "ADC2 Channel 0 (GPIO 4)"
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config ADC2_EXAMPLE_CHANNEL_1
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bool "ADC2 Channel 1 (GPIO 0)"
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config ADC2_EXAMPLE_CHANNEL_2
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bool "ADC2 Channel 2 (GPIO 2)"
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config ADC2_EXAMPLE_CHANNEL_3
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bool "ADC2 Channel 3 (GPIO 15)"
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config ADC2_EXAMPLE_CHANNEL_4
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bool "ADC2 Channel 4 (GPIO 13)"
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config ADC2_EXAMPLE_CHANNEL_5
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bool "ADC2 Channel 5 (GPIO 12)"
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config ADC2_EXAMPLE_CHANNEL_6
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bool "ADC2 Channel 6 (GPIO 14)"
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config ADC2_EXAMPLE_CHANNEL_7
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bool "ADC2 Channel 7 (GPIO 27)"
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config ADC2_EXAMPLE_CHANNEL_8
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bool "ADC2 Channel 8 (GPIO 25)"
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config ADC2_EXAMPLE_CHANNEL_9
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bool "ADC2 Channel 9 (GPIO 26)"
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endchoice
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config ADC2_EXAMPLE_CHANNEL
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int
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default 0 if ADC2_EXAMPLE_CHANNEL_0
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default 1 if ADC2_EXAMPLE_CHANNEL_1
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default 2 if ADC2_EXAMPLE_CHANNEL_2
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default 3 if ADC2_EXAMPLE_CHANNEL_3
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default 4 if ADC2_EXAMPLE_CHANNEL_4
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default 5 if ADC2_EXAMPLE_CHANNEL_5
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default 6 if ADC2_EXAMPLE_CHANNEL_6
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default 7 if ADC2_EXAMPLE_CHANNEL_7
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default 8 if ADC2_EXAMPLE_CHANNEL_8
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default 9 if ADC2_EXAMPLE_CHANNEL_9
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choice DAC_EXAMPLE_CHANNEL
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bool "DAC Channel Num"
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default DAC_EXAMPLE_CHANNEL_1
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help
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The channel of DAC used in this example.
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config DAC_EXAMPLE_CHANNEL_1
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bool "DAC Channel 1 (GPIO25)"
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config DAC_EXAMPLE_CHANNEL_2
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bool "DAC Channel 2 (GPIO26)"
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endchoice
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config DAC_EXAMPLE_CHANNEL
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int
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default 1 if DAC_EXAMPLE_CHANNEL_1
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default 2 if DAC_EXAMPLE_CHANNEL_2
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endmenu
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@ -0,0 +1,59 @@
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/* ADC2 Example
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/queue.h"
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#include "driver/gpio.h"
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#include "driver/adc.h"
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#include "driver/dac.h"
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#include "esp_system.h"
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#include "esp_adc_cal.h"
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#define DAC_EXAMPLE_CHANNEL CONFIG_DAC_EXAMPLE_CHANNEL
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#define ADC2_EXAMPLE_CHANNEL CONFIG_ADC2_EXAMPLE_CHANNEL
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void app_main(void)
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{
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uint8_t output_data=0;
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int read_raw;
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esp_err_t r;
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gpio_num_t adc_gpio_num, dac_gpio_num;
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assert( adc2_pad_get_io_num( ADC2_EXAMPLE_CHANNEL, &adc_gpio_num ) == ESP_OK );
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assert( dac_pad_get_io_num( DAC_EXAMPLE_CHANNEL, &dac_gpio_num ) == ESP_OK );
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printf("ADC channel %d @ GPIO %d, DAC channel %d @ GPIO %d.\n", ADC2_EXAMPLE_CHANNEL, adc_gpio_num,
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DAC_EXAMPLE_CHANNEL, dac_gpio_num );
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dac_output_enable( DAC_EXAMPLE_CHANNEL );
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//be sure to do the init before using adc2.
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printf("adc2_init...\n");
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adc2_config_channel_atten( ADC2_EXAMPLE_CHANNEL, ADC_ATTEN_0db );
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vTaskDelay(2 * portTICK_PERIOD_MS);
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printf("start conversion.\n");
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while(1) {
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dac_output_voltage( DAC_EXAMPLE_CHANNEL, output_data++ );
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r = adc2_get_raw( ADC2_EXAMPLE_CHANNEL, ADC_WIDTH_12Bit, &read_raw);
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if ( r == ESP_OK ) {
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printf("%d: %d\n", output_data, read_raw );
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} else if ( r == ESP_ERR_INVALID_STATE ) {
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printf("ADC2 not initialized yet.\n");
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} else if ( r == ESP_ERR_TIMEOUT ) {
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//This can not happen in this example. But if WiFi is in use, such error code could be returned.
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printf("ADC2 is in use by Wi-Fi.\n");
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}
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vTaskDelay( 2 * portTICK_PERIOD_MS );
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}
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}
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@ -0,0 +1,3 @@
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#
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# Main Makefile. This is basically the same as a component makefile.
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#
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