56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
|
/*
|
||
|
|
* Example of using DS1302 RTC driver
|
||
|
|
*
|
||
|
|
* Part of esp-open-rtos
|
||
|
|
* Copyright (C) 2016 Ruslan V. Uss <unclerus@gmail.com>
|
||
|
|
* Pavel Merzlyakov <merzlyakovpavel@gmail.com>
|
||
|
|
* BSD Licensed as described in the file LICENSE
|
||
|
|
*/
|
||
|
|
#include <esp/uart.h>
|
||
|
|
#include <espressif/esp_common.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <i2c/i2c.h>
|
||
|
|
#include <ads111x/ads111x.h>
|
||
|
|
#include <FreeRTOS.h>
|
||
|
|
#include <task.h>
|
||
|
|
|
||
|
|
// Connect ADDR pin to GND
|
||
|
|
#define ADDR ADS111X_ADDR_GND
|
||
|
|
|
||
|
|
#define SCL_PIN 5
|
||
|
|
#define SDA_PIN 4
|
||
|
|
|
||
|
|
// +-4.096V
|
||
|
|
#define GAIN ADS111X_GAIN_4V096
|
||
|
|
|
||
|
|
void user_init(void)
|
||
|
|
{
|
||
|
|
uart_set_baud(0, 115200);
|
||
|
|
printf("SDK version:%s\n", sdk_system_get_sdk_version());
|
||
|
|
|
||
|
|
i2c_init(SCL_PIN, SDA_PIN);
|
||
|
|
|
||
|
|
ads111x_set_mode(ADDR, ADS111X_MODE_CONTUNOUS);
|
||
|
|
ads111x_set_data_rate(ADDR, ADS111X_DATA_RATE_32);
|
||
|
|
|
||
|
|
ads111x_set_input_mux(ADDR, ADS111X_MUX_0_GND);
|
||
|
|
ads111x_set_gain(ADDR, GAIN);
|
||
|
|
|
||
|
|
float gain_val = ads111x_gain_values[GAIN];
|
||
|
|
|
||
|
|
while (true)
|
||
|
|
{
|
||
|
|
// wait for conversion end
|
||
|
|
while (ads111x_busy(ADDR)) {}
|
||
|
|
|
||
|
|
// Read result
|
||
|
|
int16_t raw = ads111x_get_value(ADDR);
|
||
|
|
|
||
|
|
float voltage = gain_val / ADS111X_MAX_VALUE * raw;
|
||
|
|
|
||
|
|
printf("Raw ADC value: %d, voltage: %.04f volts\n", raw, voltage);
|
||
|
|
|
||
|
|
vTaskDelay(500 / portTICK_PERIOD_MS);
|
||
|
|
}
|
||
|
|
}
|