driver(adc/dac): fix adc dac driver for esp32s2

1. update register file about adc; 2. fix adc driver; 3. add UT for adc/dac; See merge request espressif/esp-idf!7776
2025-12-15 19:34:03 +00:00 · 2020-02-25 22:19:48 +08:00
parent dfbb108ab4
commit baa7898e35
62 changed files with 9686 additions and 3691 deletions
--- a/components/driver/test/adc_dma_test/test_esp32.c
+++ b/components/driver/test/adc_dma_test/test_esp32.c
@@ -0,0 +1,142 @@
+// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
+//
+// 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.
+
+/*
+ Tests for the adc device driver
+*/
+#include "esp_system.h"
+#include "driver/adc.h"
+#include "driver/dac.h"
+#include "driver/rtc_io.h"
+#include "driver/gpio.h"
+#include "unity.h"
+#include "esp_system.h"
+#include "esp_event.h"
+#include "esp_wifi.h"
+#include "esp_log.h"
+#include "nvs_flash.h"
+#include "test_utils.h"
+
+#if !DISABLED_FOR_TARGETS(ESP8266, ESP32S2) // This testcase for ESP32
+
+/*
+ * ADC DMA testcase
+ */
+#include "driver/i2s.h"
+
+//i2s number
+#define EXAMPLE_I2S_NUM           (0)
+//i2s sample rate
+#define EXAMPLE_I2S_SAMPLE_RATE   (16000)
+//i2s data bits
+#define EXAMPLE_I2S_SAMPLE_BITS   (16)
+//enable display buffer for debug
+#define EXAMPLE_I2S_BUF_DEBUG     (0)
+//I2S read buffer length
+#define EXAMPLE_I2S_READ_LEN      (16 * 1024)
+//I2S data format
+#define EXAMPLE_I2S_FORMAT        (I2S_CHANNEL_FMT_RIGHT_LEFT)
+//I2S channel number
+#define EXAMPLE_I2S_CHANNEL_NUM   ((EXAMPLE_I2S_FORMAT < I2S_CHANNEL_FMT_ONLY_RIGHT) ? (2) : (1))
+//I2S built-in ADC unit
+#define I2S_ADC_UNIT              ADC_UNIT_1
+//I2S built-in ADC channel
+//#define I2S_ADC_CHANNEL           //adc1_ch[0]
+
+//flash record size, for recording 5 seconds' data
+#define FLASH_RECORD_SIZE         (EXAMPLE_I2S_CHANNEL_NUM * EXAMPLE_I2S_SAMPLE_RATE * EXAMPLE_I2S_SAMPLE_BITS / 8 * 5)
+#define FLASH_ERASE_SIZE          (FLASH_RECORD_SIZE % FLASH_SECTOR_SIZE == 0) ? FLASH_RECORD_SIZE : FLASH_RECORD_SIZE + (FLASH_SECTOR_SIZE - FLASH_RECORD_SIZE % FLASH_SECTOR_SIZE)
+//sector size of flash
+#define FLASH_SECTOR_SIZE         (0x1000)
+
+#define ADC1_TEST_CHANNEL_NUM   3
+#define ADC2_TEST_CHANNEL_NUM   3
+
+static const int adc1_ch[ADC1_TEST_CHANNEL_NUM] = {
+    ADC1_CHANNEL_2,
+    ADC1_CHANNEL_3,
+    ADC1_CHANNEL_4,
+};
+
+/**
+ * @brief I2S ADC/DAC mode init.
+ */
+static void example_i2s_init(void)
+{
+    int i2s_num = EXAMPLE_I2S_NUM;
+    i2s_config_t i2s_config = {
+        .mode = I2S_MODE_MASTER | I2S_MODE_RX | I2S_MODE_TX | I2S_MODE_DAC_BUILT_IN | I2S_MODE_ADC_BUILT_IN,
+        .sample_rate =  EXAMPLE_I2S_SAMPLE_RATE,
+        .bits_per_sample = EXAMPLE_I2S_SAMPLE_BITS,
+        .communication_format = I2S_COMM_FORMAT_PCM,
+        .channel_format = EXAMPLE_I2S_FORMAT,
+        .intr_alloc_flags = 0,
+        .dma_buf_count = 2,
+        .dma_buf_len = 1024,
+        .use_apll = 1,
+    };
+    //install and start i2s driver
+    TEST_ESP_OK( i2s_driver_install(i2s_num, &i2s_config, 0, NULL) );
+    //init ADC pad
+    TEST_ESP_OK( i2s_set_adc_mode(I2S_ADC_UNIT, adc1_ch[0]) );
+}
+
+static void example_i2s_deinit(void)
+{
+    TEST_ESP_OK( i2s_driver_uninstall(EXAMPLE_I2S_NUM) );
+}
+
+/**
+ * @brief debug buffer data
+ */
+static void example_disp_buf(uint8_t *buf, int length)
+{
+    printf("======\n");
+    for (int i = 0; i < length; i++) {
+        printf("%02x ", buf[i]);
+        if ((i + 1) % 8 == 0) {
+            printf("\n");
+        }
+    }
+    printf("======\n");
+}
+
+TEST_CASE("ADC DMA read", "[adc dma]")
+{
+    example_i2s_init();
+
+    int i2s_read_len = EXAMPLE_I2S_READ_LEN;
+    int flash_wr_size = 0;
+    size_t bytes_read;
+
+    char *i2s_read_buff = (char *) calloc(i2s_read_len, sizeof(char));
+    TEST_ESP_OK( i2s_adc_enable(EXAMPLE_I2S_NUM) );
+    while (flash_wr_size < FLASH_RECORD_SIZE) {
+        //read data from I2S bus, in this case, from ADC.
+        TEST_ESP_OK( i2s_read(EXAMPLE_I2S_NUM, (void *) i2s_read_buff, i2s_read_len, &bytes_read, portMAX_DELAY) );
+        example_disp_buf((uint8_t *) i2s_read_buff, 64);
+        //save original data from I2S(ADC) into flash.
+        flash_wr_size += i2s_read_len;
+        ets_printf("Sound recording %u%%\n", flash_wr_size * 100 / FLASH_RECORD_SIZE);
+    }
+    TEST_ESP_OK( i2s_adc_disable(EXAMPLE_I2S_NUM) );
+    if (i2s_read_buff) {
+        free(i2s_read_buff);
+        i2s_read_buff = NULL;
+    }
+
+    example_i2s_deinit();
+}
+
+#endif // !DISABLED_FOR_TARGETS(ESP8266, ESP32S2)