mirror of
https://github.com/nopnop2002/esp-idf-mpr121.git
synced 2025-12-16 17:34:31 +03:00
88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/* MPR121 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 <string.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 "esp_log.h"
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#include "mpr121.h"
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static const char *TAG = "MAIN";
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void app_main(void)
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{
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ESP_LOGI(TAG, "CONFIG_I2C_ADDRESS=0x%X", CONFIG_I2C_ADDRESS);
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ESP_LOGI(TAG, "CONFIG_SCL_GPIO=%d", CONFIG_SCL_GPIO);
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ESP_LOGI(TAG, "CONFIG_SDA_GPIO=%d", CONFIG_SDA_GPIO);
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ESP_LOGI(TAG, "CONFIG_IRQ_GPIO=%d", CONFIG_IRQ_GPIO);
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MPR121_t dev;
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uint16_t touchThreshold = 40;
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uint16_t releaseThreshold = 20;
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bool ret = MPR121_begin(&dev, CONFIG_I2C_ADDRESS, touchThreshold, releaseThreshold, CONFIG_IRQ_GPIO, CONFIG_SDA_GPIO, CONFIG_SCL_GPIO);
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ESP_LOGI(TAG, "MPR121_begin=%d", ret);
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if (ret == false) {
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switch (MPR121_getError(&dev)) {
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case NO_ERROR:
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ESP_LOGE(TAG, "no error");
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break;
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case ADDRESS_UNKNOWN:
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ESP_LOGE(TAG, "incorrect address");
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break;
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case READBACK_FAIL:
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ESP_LOGE(TAG, "readback failure");
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break;
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case OVERCURRENT_FLAG:
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ESP_LOGE(TAG, "overcurrent on REXT pin");
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break;
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case OUT_OF_RANGE:
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ESP_LOGE(TAG, "electrode out of range");
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break;
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case NOT_INITED:
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ESP_LOGE(TAG, "not initialised");
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break;
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default:
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ESP_LOGE(TAG, "unknown error");
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break;
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}
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while(1) {
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vTaskDelay(1);
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}
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}
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#if 0
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// this is the touch threshold - setting it low makes it more like a proximity trigger, default value is 40 for touch
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MPR121_setTouchThresholdAll(&dev, 40);
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// this is the release threshold - must ALWAYS be smaller than the touch threshold, default value is 20 for touch
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MPR121_setReleaseThresholdAll(&dev, 20);
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#endif
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MPR121_setFFI(&dev, FFI_10); // AFE Configuration 1
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MPR121_setSFI(&dev, SFI_10); // AFE Configuration 2
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MPR121_setGlobalCDT(&dev, CDT_4US); // reasonable for larger capacitances
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MPR121_autoSetElectrodesDefault(&dev, true); // autoset all electrode settings
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MPR121_updateTouchData(&dev); // Clear touch status register
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while(1) {
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MPR121_updateAll(&dev);
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for (int i = 0; i < 12; i++) {
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if (MPR121_isNewTouch(&dev, i)) {
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ESP_LOGI(TAG, "electrode %d was just touched", i);
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} else if (MPR121_isNewRelease(&dev, i)) {
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ESP_LOGI(TAG, "electrode %d was just released", i);
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}
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}
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vTaskDelay(1);
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}
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}
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