Infinity Project. an additional memory for GLCD where to store programs. July Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag.

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1 Infinity Project an additional memory for GLCD where to store programs July 2014 Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 1

2 INDEX 1. Project description 3 2. Getting started Hardware Graphic CPU SD Card adapter SD Memory Card Format the SD Memory Card as FAT (FAT16) Download from FoxDelta server following files, rename and copy them to the root: Add now the UPDATE versions of the FoxDelta GLCD applications you want to run, rename the files following the rule 8+3 capital letters and copy them to the root GLCD firmware MODE A. Update an already working GLCD Mode B : Program from scratch SD Memory Card Manager First loading and running an application Switching applications Removing SD-Manager Testing the hardware 20 Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 2

3 1. Project description Unlike projects, where a dedicated CPU and hardware to address a specific task are used, FoxDelta Project INFINITY" Graphic CPU is developed keeping in mind the purpose to use same CPU/LCD/Hardware for various purposes or different projects. Projects like PM4 (Dual Channel 500MHz RF Meter) SWM4 (Dual Channel GRAPHIC LCD SWR Meter) FC4 (FC4: 500MHZ Frequency Counter and RF Meter) SWRA (Antenna Analyzer) MultiMeter are designed to fully implement the features offered by the Project INFINITY" Graphic CPU (GLCD in the following). Due to the performances (small memory capacity) and to the architecture (mainly lack of dynamic memory allocation) of the pic 18F family, usually only one f/w application at the time can be flashed to the program memory and executed. Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 3

4 The current firmware architecture, common to all FoxDelta projects, segments the pic program memory (flash memory) in two areas: the upper area is hosting a special program called Bootloader the lower part is dedicate to store the user application. The Bootloader is permanently resident in that memory area and it allows to load a new f/w from an external source (PC) and reprogram the content of the application area. The PC stores in his large disk the user applications. The primary job of the Bootloader is to talk with the PC receiving the f/w and copying it byte by byte to the pic program memory (flash memory). At the end of this process it passes the control to the new application and remains stand by until his next activation. This is the easiest method to upgrade an application to a new version or to replace it with a different one, because NO special h/w like a pic programmer is required. Just a PC, an USB cable and a free s/w are needed. So with this implementation, switching from a FoxDelta project to a second one is just matter to connect the GLCD (via USB) to the PC and download the new application. Although this is a very smart and simple job there are two constraints: need of a PC connection. loading a new application to pic means overwrite the current one recalling the original f/w of the second application stored in the pc. That is: current values (like status and calibration values) are lost while default values of the second application are restored. This simple job when running GLCD stand alone (not connected to the PC) or when a precise calibration was done or when a frequent application switching is required, could be an unrealistic approach. To go over these limits we developed the solution to add to GLCD an external memory, where to store the available f/w, and a management system that allows to save current application status, select a new one, load and launch it. Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 4

5 We choose the Secure Digital Card (SD) as additional memory to be connected to GLCD and FAT16 as File System. These choices are compliant with almost all PC OS and SD card readers, so they allow to prepare and manage this support without any additional buy. Having no PC resources, this requires that the job to list available files, select the application, load and launch it, should implement by the pic. For this purpose we developed a new SD Bootloader and a special SD File System Manager. To keep the size of SD Bootloader as small as possible, in order to leave the rest of the memory free for user applications, and implement a file system compliant with the PC standards, the main functions of the file management are implemented by a separate module we called SD File System Manager. This module is automatically loaded and discharged when needed. SD File System Manager and SD Bootloader strictly cooperate to manage the f/w stored in the SD memory. Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 5

6 2. Getting started 2.1 Hardware The hardware necessary for this project is: A modified Graphic CPU 0613 (see An SD Card adapter and the cable to connect GLCD An SD Card any size from 256MB to 2GB Graphic CPU 0613 Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 6

7 A very simple mod must be done at GLCD FRC connector level: 1. Cut the vias joining the connector FRC16 R/A pin 15 to pin 16 and pin 13 to pin 14. Pins 16 and pin 14 are now free, while pin 13 and pin 15 are still connected to their vias. 2. Wire: FRC16 R/A pin 14 to PIC 18F4550 pin 16 (this pin is named RC1/T1OSC/CCP2) FRC16 R/A pin 16 to PIC 18F4550 pin 26 (this pin is named RC7/TX/DT) Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 7

8 2.1.2 SD Card adapter Because the SD Memory Card requires 3.3V signals, while GLCD works at 5.1V, an adapter is necessary to adjust the signals level. The schematic diagram of the adapter is very simple: Many ready to use cheap adapters, like the one used in our prototype, are also available from the market. Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 8

9 2.2 SD Memory Card A 256MB SD Card is large enough to store all FoxDelta f/w applications, any size up to 2GB can be used too. An SD Card reader connected to the PC is necessary to prepare the memory, most of laptop already have integrated this interface as standard configuration. Because of pic 18F4550 reduced capacity, not all the features offered by a standard PC file manager are implemented, so please carefully read the following rules: Memory card must be formatted as FAT (FAT16) All files must be in the root, sub folders are NOT detected Filename must be the format 8+3 (8 characters for the name plus 3 characters for extension), capital letters Following files must be always present in the root: LOAD-SD.HEX SDMNGR.HEX To prepare the SD Card for FoxDelta usage follow the steps: 1. Format the SD Memory Card as FAT (FAT16) Select: File System = FAT Allocation unit size = Default allocation size Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 9

10 2. Download from FoxDelta server following files, rename and copy them to the root: Filename Rename as Notes Loader-sd v1.00.hex LOAD-SD.HEX Sd-manager v1.00 UPDATE.hex SDMNGR.HEX Use the update version 3. Add now the UPDATE versions of the FoxDelta GLCD applications you want to run, rename the files following the rule 8+3 capital letters and copy them to the root. Example: Filename Rename as Notes GCPU-SWRA v1.0 Update.hex SWRA.HEX Use the update version GCPU-PM4 v1.02 UPDATE.hex PM4.HEX Use the update version FC4-GLCD v1.00 UPDATE.hex FC4.HEX Use the update version SWM4 v1.03_update.hex SWM4.EXE Use the update version MultiTester v1.02 UPDATE.hex MTESTER.EXE Use the update version Do not use LOAD or SDMNGR as filenames because they are reserved words. To speed up the process, download the file named SD CARD v1.00.zip, containing all hex files. Unzip this file to the root of your memory card. Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 10

11 Root of SD Card should appear similar to the following picture: Now your SD Memory Card is ready to be used. Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 11

12 2.3 GLCD firmware To start GLCD working with the SD Card the program SDMNGR.HEX must be installed at first. There are two options: Mode A : use this procedure if you have a working GLCD, for example you are using GLCD to run PM4, or SWRA etc. The GLCD firmware already implements the function USB Bootloader (provided by Microchip) that allows to update the pic 18F4550 to a new firmware via the USB port. No special hardware is needed, just an USB cable to connect GLCD to PC. Mode B : use this procedure if you want to program from scratch the flash memory or initialize a new 18F4550. A pic programmer is required MODE A. Update an already working GLCD The program HIDBootLoader.exe v2.90a (provided by Microchip) will be used, this is the Windows interface to access the GLCD USB Bootloader function and flash the microprocessor memory. Create a temporary folder and copy there the file Sd-manager vx.xx UPDATE.hex, please notice that the UPDATE version is required Create a temporary folder and unzip there the file Microchip Bootloader 2.90a.zip (this file is available from Microchip web site). Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 12

13 Run the Windows program: HID Bootloader.exe. You ll read the message Device not detected. Connect GLCD to the PC using an USB cable and enter the update mode pressing the BTN while power ON (or reset) the unit. USB Bootloader will recognize GLCD and present the message Device attached Select File/Import Firmware Image, navigate to the folder where you saved Sd-manager vx.xx UPDATE.hex and choose this file. Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 13

14 Now USB Bootloader is ready to download the f/w and to program the pic program memory. Select Program/Erase Program Verify Device. Programming process starts at the end you should read Completed Successfully... Unplug GLCD and close the USB Bootloader program. Power ON (or reset) GLCD and check the hello message. Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 14

15 2.3.2 Mode B : Program from scratch To program from scratch the flash memory of the 18F4550 a pic programmer is needed, burn the file: Sd-manager vx.xx FULL.hex. Please notice that the FULL version is required, this file already includes an embedded copy of the USB Bootloader. Set the pic programmer Configuration Bit as follow: Value Field Category & Setting 24 PLLDIV PLL Prescaler Selection bits Divide by 5 (20 MHz oscillator input) CPUDIV System Clock Postscaler Selection bits[primary Oscillator Src: /1][96 MHz PLL Src: /2] USBDIV USB Clock Selection bit (used in Full-Speed USB mode only; UCFG:FSEN = 1)USB clock source comes from the 96 MHz PLL divided by 2 6 FOSC Oscillator Selection bits EC oscillator, PLL enabled, port function on RA6 (ECPIO) FCMEN IESO Fail-Safe Clock Monitor Enable bitfail-safe Clock Monitor disabled Internal/External Oscillator Switchover bit Oscillator Switchover mode disabled 3F PWRT Power-up Timer Enable bit PWRT disabled BOR BORV VREGEN Brown-out Reset Enable bits Brown-out Reset enabled in hardware only (SBOREN is disabled) Brown-out Reset Voltage bits Minimum setting USB Voltage Regulator Enable bitusb voltage regulator enabled 1E WDT Watchdog Timer Enable bit WDT disabled (control is placed on the SWDTEN bit) WDTPS Watchdog Timer Postscale Select bits1: CCP2MX CCP2 MUX bit CCP2 input/output is multiplexed with RC1 PBADEN LPT1OSC MCLRE PORTB A/D Enable bit PORTB<4:0> pins are configured as digital I/O on Reset Low-Power Timer 1 Oscillator Enable bittimer1 configured for higher power operation MCLR Pin Enable bit MCLR pin enabled; RE3 input pin disabled 81 STVREN Stack Full/Underflow Reset Enable bitstack full/underflow will cause Reset LVP ICPRT XINST Single-Supply ICSP Enable bit Single-Supply ICSP disabled Dedicated In-Circuit Debug/Programming Port (ICPORT) Enable bit ICPORT disabled Extended Instruction Set Enable bit Instruction set extension and Indexed Addressing mode disabled (Legacy mode) 0F CP0 Code Protection bit Block 0 ( FFFh) is not code-protected CP1 CP2 CP3 Code Protection bit Block 1 ( FFFh) is not code-protected Code Protection bit Block 2 ( FFFh) is not code-protected Code Protection bit Block 3 ( FFFh) is not code-protected C0 CPB Boot Block Code Protection bit Boot block ( FFh) is not code-protected CPD Data EEPROM Code Protection bit Data EEPROM is not code-protected 0F WRT0 Write Protection bit Block 0 ( FFFh) is not write-protected WRT1 WRT2 WRT3 Write Protection bit Block 1 ( FFFh) is not write-protected Write Protection bit Block 2 ( FFFh) is not write-protected Write Protection bit Block 3 ( FFFh) is not write-protected E0 WRTC Configuration Register Write Protection bit Configuration registers ( FFh) are not write-protected WRTB WRTD Boot Block Write Protection bit Boot block ( FFh) is not write-protected Data EEPROM Write Protection bit Data EEPROM is not write-protected 0F EBTR0 Table Read Protection bit Block 0 ( FFFh) is not protected from table reads executed in other blocks EBTR1 EBTR2 EBTR3 Table Read Protection bit Block 1 ( FFFh) is not protected from table reads executed in other blocks Table Read Protection bit Block 2 ( FFFh) is not protected from table reads executed in other blocks Table Read Protection bit Block 3 ( FFFh) is not protected from table reads executed in other blocks 40 EBTRB Boot Block Table Read Protection bitboot block ( FFh) is not protected from table reads executed in other blocks Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 15

16 3. SD Memory Card Manager 3.1 First loading and running an application Starting sequence Move the pointer rotating the Encode Knob and select the program pressing the Encoder Button Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 16

17 Confirm pressing again the Encoder Button and WAIT Loading process takes about sec., PLEASE patiently WAIT until the selected application is loaded and executed : Do NOT POWER OFF the unit, do NOT REMOVE the SD Memory Card during the programming process until the hello message of the application is shown, any of these actions could leave the pic in unknown status and reprogramming the pic from scratch could be necessary. Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 17

18 3.2 Switching applications To switch from an application to a different one activate the SD-Manager this way : insert the SD Card POWER ON (or reset) GLCD while PRESSING the BUTTON (then release it!!) Loading and starting SD-Manager takes about 10 sec., during this time nothing seems to happen only a fast blinking of the LCD can be observed, so be patient and wait. Do NOT POWER OFF the unit, do NOT REMOVE the SD Memory Card during the programming process until the SDMNGR hello message of is shown, any of these actions could leave the pic in unknown status and reprogramming the pic from scratch could be necessary. Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 18

19 3.3 Removing SD-Manager To remove SD-Manager, download from FoxDelta server the USB-Bootloader, rename and copy to the root of the SD Card: Filename Rename as Notes USB Device - HID - HID Bootloader - LOAD-USB.HEX This file is available from C18 - PIC18F4550.hex Microchip web site Insert the updated SD Card, run SDMNGR, select the entry LOAD-USB.HEX and confirm. At the end of process, the USB Bootloader is installed, connect GLCD to the PC while PRESSING the BUTTON (this activates the USB Bootloader), run the program HIDBootLoader.exe v2.90a and proceed to download to GLCD the application that will overwrite SDMNGR. Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 19

20 4. Testing the hardware SD-Manager implements a very simple write/read test that can be used to verify the SD Card Adapter. To activate SD Memory test: Power OFF Move OFF the Dip Switch 8 (upper left side of the GLCD unit) Power ON again Insert an SD Memory Card Do not forget, test done, to move Dip Switch 8 to ON position. Infinity Project. Additional memory for GLCD by Tony, i2tzk Pag. 20