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94 lines
1.7 KiB
C++
94 lines
1.7 KiB
C++
/* -*-c++-*-
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Blink
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Turns on an LED on for one second, then off for one second, repeatedly.
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This example code is in the public domain.
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*/
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/*
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./hardware/ATTinyCore/avr/cores/tinymodern/core_pins.h
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Caution: reverse Pinout: PA3 => Pin 3
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Nanite841 Pinout from above:
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button
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SDO/MISO PA5 PA6 SDI/MOSI
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SCK PA4 PA7
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CS PA3 PB2
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RX0 PA2 PB2
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TX0 PA1 PB1
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PA0 PB0
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GND VCC
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usb
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Bosch BME280 Breakout from above pin header left:
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VCC
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GND
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SCL => SCK
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SDI => MOSI
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CSB => PA3/3
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SDO => MISO
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*/
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#include <avr/io.h>
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#include <util/delay.h>
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#include "841vcc.h"
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#define NODE_ID 1
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#define OUTPUT_PIN 7
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#define LED 2 //LED_BUILTIN // PORTB2
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#define CS 3
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#define DELAY 2000
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#define SET_OUTPUT(pin) DDRB |= (1 << pin)
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#define SET_HIGH(pin) PORTB |= (1 << pin)
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#define SET_LOW(pin) PORTB &= ~(1 << pin)
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void print_asufloat(uint32_t val, uint16_t factor) {
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Serial.print(val / factor);
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Serial.print(".");
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Serial.print(val % factor);
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}
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void print_asifloat(int32_t val, uint16_t factor) {
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Serial.print(val / factor);
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Serial.print(".");
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Serial.print(val % factor);
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}
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void print_measurements() {
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float vcc;
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SET_LOW(LED);
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adc_enable();
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adc_start();
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vcc = adc_get_vcc();
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adc_disable();
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Serial.print("Voltage: ");
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Serial.println(vcc);
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SET_HIGH(LED);
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}
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void halt() {
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while(1);
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}
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void setup() {
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SET_OUTPUT(LED);
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Serial.begin(115200);
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Serial.println("init");
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adc_setup_vcc_measurement();
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}
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void loop() {
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print_measurements();
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delay(DELAY);
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}
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