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Yampp-3U 

 

Reference Manual

 

Contents 

 

Version 1.10, 

11/10/2005 

 

Page 7 of 13 

3 Keyboard 

Assembly 

 

This table shows the installation of the keyboard and shows the basic functionality. It is possible 
to add and/or change the functionality of the buttons. You simply have to edit the “constant.h” in 

the firmware package, rebuild and update the firmware. The procedure of updating the firmware 

is explained in section 8.1. 

 

Note: It’s not possible to press 2 buttons at the same time. This will cause a bus conflict. 

 

KEYS

AD0

AD1

AD2

AD3

AD4

AD5

AD6

AD7

 

Ke Display

J2

8

6

4

2

7

5

3

1

AD2

AD3

AD4

AD6

KEYS

AD5

AD7

TX_EN

9

11

13

15

16

14

12

10

GND

V0 (VEE)

A1 (R/W)

AD0

AD1

LCD_E (E)

A0 (RS)

VCC

 

 
 
 

 

Here is an alternative to correct the bus 

conflict problem. You simply have to add a 

diode for each line of data. You can use 

1N4148 diode or equivalent. 

KEYS

Stop

Play

Prev

Next

AD0

AD1

AD2

AD3

AD4

AD5

AD6

AD7

PrevPl

NextPl

Up

Down

 

 

Summary of Contents for 3U

Page 1: ...Yampp 3U Reference Manual Written by Eric Guérard Version 1 11 ...

Page 2: ... 3310 GRAPHIC LCD INSTALLATION 9 4 3 COLOR GRAPHIC LCD INSTALLATION 10 4 3 1 WHAT YOU NEED 10 4 3 2 DISPLAY CONNECTIONS 10 4 3 3 FIRMWARE 11 4 3 4 GRAPHICS SKIN UPLOAD 12 5 POWER UP THE PLAYER 13 6 PROGRAM THE BOOT LOADER 13 7 USB DRIVERS INSTALLATION 15 8 PROGRAM TEST FIRMWARE 16 8 1 PROGRAMMING 16 8 2 HARDWARE TESTING 16 9 PROGRAM PLAYER FIRMWARE 17 10 GENERAL CHARACTERISTICS 17 ...

Page 3: ...per Hansen Keyboard layout fix This document will guide you step by step to the building process of the yampp 3U Rev D MP3 player It is very important to follow each step For further information go to the Yampp website http www yampp com 2 PCB Assembly Here are the step by step instructions for the building process of the Yampp3U Step 1 Install the processor ATMEGA162 Carefully verify the orientat...

Page 4: ...Page 4 of 13 Step 2 Install the USB chip FT245BM and some surface mount IC IC12 is optional Mount either IC4 or IC12 but not both together Once again don t forget to verify the parts orientations Step 3 Install the MP3 Decoder VS1001K and some surface mount IC ...

Page 5: ...Yampp 3U Reference Manual Contents Version 1 10 11 10 2005 Page 5 of 13 Step 4 Install the buffer IC 74LVC245 Step 5 Install all the small surface mount parts such as resistors and capacitors ...

Page 6: ...Yampp 3U Reference Manual Contents Version 1 10 11 10 2005 Page 6 of 13 Step 6 Install the larger surface mount parts Step 7 Install the entire thru hole components ...

Page 7: ...ure of updating the firmware is explained in section 8 1 Note It s not possible to press 2 buttons at the same time This will cause a bus conflict KEYS AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 Keyboard Display J2 8 6 4 2 7 5 3 1 AD2 AD3 AD4 AD6 KEYS AD5 AD7 TX_EN 9 11 13 15 16 14 12 10 GND V0 VEE A1 R W AD0 AD1 LCD_E E A0 RS VCC Here is an alternative to correct the bus conflict problem You simply have to ...

Page 8: ...0 4x16 and 4x20 characters displays You must edit the constant h in the firmware package to define the display that will be use and you must rebuild and update the firmware The procedure of updating the firmware is explained in section 8 1 The next table shows you how to connect the character LCD module The pinout of the LCD module can be different from a model to another one So it is very importa...

Page 9: ...p3U board Be very careful when soldering on the LCD You must edit the constant h in the firmware package to define the display that will be use and you must rebuild and update the firmware The procedure of updating the firmware is explained in section 8 1 Tips I suggest you to apply 2 little drops of epoxy glue on each side of the connector See the red arrows NOKIA DISPLAY J9 8 6 4 2 7 5 3 1 VDD S...

Page 10: ...after removing the sticker on the backside of the display You can solder wires directly on these gold pads Solder carefully without using too much heat Pin 9 and pin 10 from LCD are used for backlight connections If you have the Epson based controller you will not find the gold pads You must use a connector or you can solder the wires directly on it Additionally you must insert a 1N4148 diode in s...

Page 11: ... This option provides two ways for storing the characters table in the player The characters table can be stored in Flash memory of the microcontroller or in the hard disk If this definition is uncommented the characters table will be located in the flash memory of the microcontroller Unfortunately this option will consume about 1720 bytes of code space memory For code space problem you can disabl...

Page 12: ...er use COM5 or edit the download bat file to setup the COM number and the YLINK path then run the batch file 4 3 4 Graphics Skin Upload The display is connected and the new firmware is burned into the chip Now it s time to upload the graphic layout into the Hard disk You can find the default graphic files Skins inside the SKINS folder If you don t upload any graphics you will only see a black scre...

Page 13: ...loader Before you can download the firmware via USB you need to program the player with the boot loader code This has to be done using the in circuit programming interface which you can get access with the programming connector J1 To program the bootloader you will need a piece of Windows software called YAAP a parallel port driver software and a programming adapter You can download the applicatio...

Page 14: ... sure everything is blank Select the Program Blank Check menu and follow the directions Step 9 Program the Boot loader Click anywhere in the Flash window then select the File Load menu Choose the y3_boot_M161C_mode hex File The Boot loader should be in the computer memory Step 10 Now it s time to transfer the Boot loader into the ATMega162 Select Program Write Flash menu and follow the directions ...

Page 15: ...npack the drivers on a directory on your PC Plug in the yampp 3U player and you should be prompted for the location of the drivers You must power up the player before connecting the USB cable Browse to the drivers and follow the installation instructions You should see the USB device in the USB Controller section as USB High Speed Serial Controller and you should have a new comport too You need to...

Page 16: ...nking This will indicate that the player is ready to receive the new firmware Step 4 Reconnect the USB cable Step 5 Start the yamppLink application and select Update Firmware on the Actions menu You will be prompted for a BIN file to download Browse to the file you want and press Ok The file will be downloaded and the download progress shown in the progress bar at the lower right of the window 8 2...

Page 17: ... on the screen Step 4 Do the entire hardware test 9 Program Player Firmware To program the latest firmware you simply have to do the procedure explained in section 8 1 Once the firmware is up and running you are ready to transfer songs with the help of Yampplink software 10 General Characteristics Min Typ Max Units USB Transfer Speed TBD 230 KB s Power consumption playing TBD 250 TBD mA Power cons...

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