* @brief Initializing function that runs before setup(). */

* @brief Configures the specified pin to be an input or output. * * @param pin The Arduino pin number to set the mode of * @param mode Pin mode. Va

* @brief Writes a HIGH or a LOW value to a digital pin. * * @param pin The Arduino pin number to set the state of * @param val The state to set. Va

Read purx_data & re-enable ISR

Data is ready when PCINT is disabled

* @brief Stops the generation of a square wave triggered by tone(). * * @param pin The Arduino pin on which to stop generating the tone */

* @brief Turns of PWM functionality on a pin * * @param pin Pin to disable PWM on */

Read purx_data

* @brief Construct a new Flash::Flash object * */

PCINT latency is 6 cycles minimum + 2 for rjmp nerdralph.blogspot.com/2020/04/measuring-avr-interrupt-latency.html

* @brief Construct a new TinyWire object * */

* @brief Reads the value from the specified analog input * * @param pin Analog pin number (use A0..A3) * @return int16_t Analog reading on the pin

* @brief Configures the reference voltage used for analog input (the value * used as the top of the input range) * * @param mode Analog refe

* @brief Writes a PWM value to a PWM compatible pin * * @param pin PWM pin (digital pin 0 or 1) * @param val PWM value to write (8-bit, 0 - 255) *

* @brief Initialize and enable the external interrupt pin (INT0) * * @param interruptNum Interrupt number. Optional parameter since ATtiny13 only *

STL and C++11 iteration capability.

* @brief Starts an i2c transmission * * @param addr 7-bit slave i2c address * @return uint8_t Transmission status. 0 = success, 2 = NACK */

* @brief Pauses the program for the amount of time (in milliseconds) * specified as parameter. * * @param ms The number of milliseconds to p

* @brief Pauses the program for the amount of time (in microseconds) * specified as parameter. Accepts both constant and non-constant values

* @brief Turns off the INT0 interrupt pin * * @param interruptNum Interrupt number. Optional parameter since ATtiny13 only * has one interru

* @brief Reads a digital pin * * @param pin The Arduino pin to read * @return uint8_t State of the pin */

Does NOTHING, you have no need to call this, here only for compatibility

* @brief End i2c transmission. Has to be executed after a read sequence too. * * @return uint8_t Transmission status. 0 = success, 2 = NACK */

* @brief Erases a flash page * * @param page_number Page number in the allocated flash space to erase */

* @brief Write data to the internal flash buffer. This is data that will * eventually be stored in flash * * @param page_number Page number to fill

As we do not have a buffer, this always returns -1

* @brief Returns the actual flash memory address for a particular byte in a page * * @param page_number * @param address * @return uint16_t */

Standards requires this to be the item after the last valid entry. The returned pointer is invalid.

* @brief Returns the number of microseconds since the microcontroller * began running the current program. * * @return uint32_t Number of mi

* @brief Returns the number of milliseconds passed since the microcontroller * began running the current program. * * @return uint32_t Numbe

Iterator functionality.

Access/read members.

Postfix increment/decrement **/

Basic user access methods.