Arduino

I downloaded an archive for my selected branch of Arduino (version 1.6.3 at the time of writing).

Mighty 1284P: An Arduino core for the ATmega1284P

I connected my programmer AVRISP mkII to the ISP header of the board to upload the Arduino bootloader. I also connected the FTDI device to provide the 5V power to the board; otherwise, programming doesn’t work.

I use the variant of the microcontroller pin definitions “avr_developers”, also known as “sanguino” for my project.

You can find the definitions in the file ~/arduino/hardware/arduino/avr/variants/avr_developers/pins_arduino.h

// ATMEL ATmega1284P (should also work for SANGUINO/ATmega644P)
//
//                       +---\/---+
//           (D 0) PB0  1|        |40  PA0 (AI 0 / D31)
//           (D 1) PB1  2|        |39  PA1 (AI 1 / D30)
//      INT2 (D 2) PB2  3|        |38  PA2 (AI 2 / D29)
//       PWM (D 3) PB3  4|        |37  PA3 (AI 3 / D28)
//    PWM/SS (D 4) PB4  5|        |36  PA4 (AI 4 / D27)
//      MOSI (D 5) PB5  6|        |35  PA5 (AI 5 / D26)
//  PWM/MISO (D 6) PB6  7|        |34  PA6 (AI 6 / D25)
//   PWM/SCK (D 7) PB7  8|        |33  PA7 (AI 7 / D24)
//                 RST  9|        |32  AREF
//                 VCC 10|        |31  GND
//                 GND 11|        |30  AVCC
//               XTAL2 12|        |29  PC7 (D 23)
//               XTAL1 13|        |28  PC6 (D 22)
//      RX0 (D 8)  PD0 14|        |27  PC5 (D 21) TDI
//      TX0 (D 9)  PD1 15|        |26  PC4 (D 20) TDO
// INT0 RX1 (D 10) PD2 16|        |25  PC3 (D 19) TMS
// INT1 TX1 (D 11) PD3 17|        |24  PC2 (D 18) TCK
//      PWM (D 12) PD4 18|        |23  PC1 (D 17) SDA
//      PWM (D 13) PD5 19|        |22  PC0 (D 16) SCL
//      PWM (D 14) PD6 20|        |21  PD7 (D 15) PWM
//                       +--------+
//

I use my AVRISP mkII programmer to load the bootloader into the microcontroller. I use Atmel AVR Studio (version is 4.19).

I go to Tools -> Program AVR -> Connect. Then I select my programmer.

Selecting a programmer, AVRISP mkII in my case

Selecting the bootloader hex file, optiboot_atmega1284p.hex in my case. Click on Program to upload the bootloader into the chip.

Then I copy the files from the downloaded archive into the hardware/arduino/avr/ subdirectory of the installed Arduino directory and add the settings for the avr_developers board into boards.txt.

##############################################################

avr_developers.name=avr-developers.com pinouts 16MHz using Optiboot
avr_developers.upload.tool=arduino:avrdude
avr_developers.upload.protocol=arduino
avr_developers.upload.maximum_data_size=16384
avr_developers.upload.maximum_size=130048
avr_developers.upload.speed=115200
avr_developers.bootloader.tool=arduino:avrdude
avr_developers.bootloader.low_fuses=0xf7
avr_developers.bootloader.high_fuses=0xde
avr_developers.bootloader.extended_fuses=0xfd
avr_developers.bootloader.file=optiboot/optiboot_atmega1284p.hex
avr_developers.bootloader.unlock_bits=0x3F
avr_developers.bootloader.lock_bits=0x0F
avr_developers.build.mcu=atmega1284p
avr_developers.build.f_cpu=16000000L
avr_developers.build.core=arduino:arduino
avr_developers.build.variant=avr_developers
avr_developers.build.board=1284P_AVR_DEVELOPERS

After that I select this board in the Arduino IDE: Tools -> Board

The Arduino Clock

uses the C++ object-oriented code written for the Arduino framework
is powered by the 8-bit Atmel’s microcontroller ATmega1284P
is installed on the PCB from Wise Clock 4
displays information on the Sure Electronic’s 32X16 RG Dual Color LED Dot Matrix Unit Board (display colors: red, green, orange)
adjusts time from the Internet using the NTP protocol via the Wi-Fi RN-XV WiFly Module
shows the weather forecast from the Internet
has alarms that can be configured to activate every day or once on a specific date or tomorrow or on different week days
plays music in the RTTTL format that was popular in mobile phones
plays music in the MIDI format via the Fluxamasynth Shield that uses the Atmel’s and Dream’s ATSAM2195 MIDI chip
changes the brightness of the display depending on the light level in a room detected by the light-dependent resistor

A video with the description of the clock menus

Here are the internal devices of the clock

Download the code for the clock

From Github: https://github.com/faritka/arduino-clock-atmega1284-midi

Hobby

Using Atmega1284 with Arduino

Arduino Clock Atmega1284p with MIDI player and Internet

The Arduino Clock

A video with the description of the clock menus

Here are the internal devices of the clock

Download the code for the clock