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Diffstat (limited to 'examples/Continuous_ATtiny')
| -rw-r--r-- | examples/Continuous_ATtiny/Continuous_ATtiny.ino | 184 |
1 files changed, 183 insertions, 1 deletions
diff --git a/examples/Continuous_ATtiny/Continuous_ATtiny.ino b/examples/Continuous_ATtiny/Continuous_ATtiny.ino index 8b13789..632bbd7 100644 --- a/examples/Continuous_ATtiny/Continuous_ATtiny.ino +++ b/examples/Continuous_ATtiny/Continuous_ATtiny.ino @@ -1 +1,183 @@ - +/***************************************************************************
+* Example sketch for the ADS1115_WE library
+*
+* This sketch shows how to use the ADS1115 module with the TinyWireM library:
+* https://github.com/adafruit/TinyWireM
+* This allows you to run the ADS1115_WE library on an ATtiny85, for example.
+*
+* For this specific sketch you also need library Tiny4KOLED to display the
+* measured values on a SSD1306 OLED display:
+* https://github.com/datacute/Tiny4kOLED
+*
+* Further information can be found on:
+* https://wolles-elektronikkiste.de/ads1115 (German)
+* https://wolles-elektronikkiste.de/en/ads1115-a-d-converter-with-amplifier (English)
+*
+***************************************************************************/
+
+/* !!!! IN ORDER TO USE TinyWireM YOU NEED TO UNCOMMENT #define USE_TINY_WIRE_M_ !!!!
+ * !!!! IN ADS1115_config.h WHICH YOU FIND IN THE libraries/ADS1115_WE/src FOLDER !!!! !!!!
+ */
+#include <TinyWireM.h>
+#include <Tiny4kOLED.h>
+#include<ADS1115_WE.h>
+#define ADS1115_I2C_ADDR 0x48
+uint8_t width = 128;
+uint8_t height = 64;
+
+/* There are two ways to create your ADS1115_WE object:
+ * ADS1115_WE adc = ADS1115_WE() -> uses Wire / I2C Address = 0x48
+ * ADS1115_WE adc = ADS1115_WE(I2C_ADDRESS) -> uses Wire / I2C_ADDRESS
+ */
+ADS1115_WE adc = ADS1115_WE(ADS1115_I2C_ADDR);
+
+void setup() {
+ TinyWireM.begin();
+ oled.begin(width, height, sizeof(tiny4koled_init_128x64br), tiny4koled_init_128x64br);
+ oled.clear();
+ oled.setFont(FONT6X8);
+ oled.on();
+
+ if(!adc.init()){
+ oled.print("ADS1115 not connected");
+ while(1){}
+ }
+ else{
+ oled.print("ADS1115 connected");
+ delay(1000);
+ oled.clear();
+ }
+
+ /* Set the voltage range of the ADC to adjust the gain
+ * Please note that you must not apply more than VDD + 0.3V to the input pins!
+ *
+ * ADS1115_RANGE_6144 -> +/- 6144 mV
+ * ADS1115_RANGE_4096 -> +/- 4096 mV
+ * ADS1115_RANGE_2048 -> +/- 2048 mV (default)
+ * ADS1115_RANGE_1024 -> +/- 1024 mV
+ * ADS1115_RANGE_0512 -> +/- 512 mV
+ * ADS1115_RANGE_0256 -> +/- 256 mV
+ */
+ adc.setVoltageRange_mV(ADS1115_RANGE_6144); //comment line/change parameter to change range
+
+ /* Set the inputs to be compared
+ *
+ * ADS1115_COMP_0_1 -> compares 0 with 1 (default)
+ * ADS1115_COMP_0_3 -> compares 0 with 3
+ * ADS1115_COMP_1_3 -> compares 1 with 3
+ * ADS1115_COMP_2_3 -> compares 2 with 3
+ * ADS1115_COMP_0_GND -> compares 0 with GND
+ * ADS1115_COMP_1_GND -> compares 1 with GND
+ * ADS1115_COMP_2_GND -> compares 2 with GND
+ * ADS1115_COMP_3_GND -> compares 3 with GND
+ */
+ adc.setCompareChannels(ADS1115_COMP_0_GND); //comment line/change parameter to change channel
+
+ /* Set number of conversions after which the alert pin asserts
+ * - or you can disable the alert
+ *
+ * ADS1115_ASSERT_AFTER_1 -> after 1 conversion
+ * ADS1115_ASSERT_AFTER_2 -> after 2 conversions
+ * ADS1115_ASSERT_AFTER_4 -> after 4 conversions
+ * ADS1115_DISABLE_ALERT -> disable comparator / alert pin (default)
+ */
+ //adc.setAlertPinMode(ADS1115_ASSERT_AFTER_1); //uncomment if you want to change the default
+
+ /* Set the conversion rate in SPS (samples per second)
+ * Options should be self-explaining:
+ *
+ * ADS1115_8_SPS
+ * ADS1115_16_SPS
+ * ADS1115_32_SPS
+ * ADS1115_64_SPS
+ * ADS1115_128_SPS (default)
+ * ADS1115_250_SPS
+ * ADS1115_475_SPS
+ * ADS1115_860_SPS
+ */
+ // adc.setConvRate(ADS1115_8_SPS); //uncomment if you want to change the default
+
+ /* Set continuous or single shot mode:
+ *
+ * ADS1115_CONTINUOUS -> continuous mode
+ * ADS1115_SINGLE -> single shot mode (default)
+ */
+ adc.setMeasureMode(ADS1115_CONTINUOUS); //comment line/change parameter to change mode
+
+ /* Choose maximum limit or maximum and minimum alert limit (window) in Volt - alert pin will
+ * assert when measured values are beyond the maximum limit or outside the window
+ * Upper limit first: setAlertLimit_V(MODE, maximum, minimum)
+ * In max limit mode the minimum value is the limit where the alert pin assertion will be
+ * cleared (if not latched)
+ *
+ * ADS1115_MAX_LIMIT
+ * ADS1115_WINDOW
+ *
+ */
+ //adc.setAlertModeAndLimit_V(ADS1115_MAX_LIMIT, 3.0, 1.5); //uncomment if you want to change the default
+
+ /* Enable or disable latch. If latch is enabled the alert pin will assert until the
+ * conversion register is read (getResult functions). If disabled the alert pin assertion will be
+ * cleared with next value within limits.
+ *
+ * ADS1115_LATCH_DISABLED (default)
+ * ADS1115_LATCH_ENABLED
+ */
+ //adc.setAlertLatch(ADS1115_LATCH_ENABLED); //uncomment if you want to change the default
+
+ /* Sets the alert pin polarity if active:
+ *
+ * ADS1115_ACT_LOW -> active low (default)
+ * ADS1115_ACT_HIGH -> active high
+ */
+ //adc.setAlertPol(ADS1115_ACT_LOW); //uncomment if you want to change the default
+
+ /* With this function the alert pin will assert, when a conversion is ready.
+ * In order to deactivate, use the setAlertLimit_V function
+ */
+ //adc.setAlertPinToConversionReady(); //uncomment if you want to change the default
+}
+
+ /* If you change the compare channels you can immediately read values from the conversion
+ * register, although they might belong to the former channel if no precautions are taken.
+ * It takes about the time needed for two conversions to get the correct data. In single
+ * shot mode you can use the isBusy() function to wait for data from the new channel. This
+ * does not work in continuous mode.
+ * To solve this issue the library adds a delay after change of channels if you are in contunuous
+ * mode. The length of the delay is adjusted to the conversion rate. But be aware that the output
+ * rate will be much lower that the conversion rate if you change channels frequently.
+ */
+
+void loop() {
+ float voltage = 0.0;
+
+ adc.setCompareChannels(ADS1115_COMP_0_GND);
+ voltage = adc.getResult_V();
+ oled.setCursor(0,0);
+ oled.print("Channel 0 [V]: ");
+ oled.print(voltage);
+ oled.clearToEOL();
+
+ adc.setCompareChannels(ADS1115_COMP_1_GND);
+ voltage = adc.getResult_V();
+ oled.setCursor(0,2);
+ oled.print("Channel 1 [V]: ");
+ oled.print(voltage);
+ oled.clearToEOL();
+
+ adc.setCompareChannels(ADS1115_COMP_2_GND);
+ voltage = adc.getResult_V();
+ oled.setCursor(0,4);
+ oled.print("Channel 2 [V]: ");
+ oled.print(voltage);
+ oled.clearToEOL();
+
+ adc.setCompareChannels(ADS1115_COMP_3_GND);
+ voltage = adc.getResult_V();
+ oled.setCursor(0,6);
+ oled.print("Channel 3 [V]: ");
+ oled.print(voltage);
+ oled.clearToEOL();
+
+ delay(2000);
+}
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