Universal IOT Remote

thingiverse

This code is a C program for an embedded system based on the PIC16F628A microcontroller. Here's a breakdown of what it does: **Hardware Configuration** The code configures the microcontroller's pins as follows: * `RA0-RA2` are used for NRF24L01 radio communication (MOSI, CSN, CE) * `RA6-RA7` are used for NRF24L01 radio communication (SCK, MISO) * `RB0-RB4` are used as input pins to detect keyboard presses * `RB5-RB7` are configured as output pins **Software** The code defines several functions: * `nrf()`: a function that reads the NRF24L01 radio's status register and handles transmission-related tasks. * `isr()`: an interrupt service routine (ISR) that handles keyboard press detection. * `main()`: the main program loop. **Main Program Loop** The `main()` function: 1. Initializes the microcontroller's peripherals, including the NRF24L01 radio. 2. Enters a loop where it: * Checks if a new keypress has been detected (i.e., `newKeypress` is 0). * If not, it reads the keyboard input pins and transmits the corresponding data to the NRF24L01 radio. * If a new keypress has been detected, it sets `newKeypress` to 1 and increments the `keysPressed` counter. **Key Detection** The code uses a debounce mechanism to detect keyboard presses. When a key is pressed, the corresponding bit in the `TRISB` register is set to 0, indicating that the pin is an input. The ISR (`isr()`) reads the current state of the input pins and stores it in the `waste` variable. **NRF24L01 Radio Communication** The code uses the NRF24L01 radio to transmit data from the keyboard input pins to another device (not shown). The `NRFOff()` function turns off the NRF24L01 radio, while the `NRFOn()` function turns it on. The `nrf()` function handles transmission-related tasks. **Commands** The code defines several commands that can be executed based on the value of the `keysPressed` counter: * If `keysPressed` is 9, the code executes a "panic" command by running the `sos.sh --panic` script. * If `keysPressed` is 10, the code executes an "implode" command by running the `implode.sh` script. **Other** The code includes several comments and TODO notes indicating areas that require further development or debugging.