Atmel AT85C51SND3B User Manual
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Atmel AT85C51SND3B User Manual

Atmel AT85C51SND3B User Manual

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AT85C51SND3B Firmware
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User's Guide

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  • Page 1 AT85C51SND3B Firmware ....................User’s Guide...

  • Page 2: Table Of Contents

    Section 1 Introduction ................... 1-1 Section 2 Firmware Features................2-3 MMI Manager ....................2-3 2.1.1 Features .....................2-3 2.1.2 Configuration ..................2-3 Device USB....................2-3 2.2.1 Features .....................2-3 2.2.2 Configuration ..................2-4 Host USB ....................2-4 2.3.1 Features .....................2-4 2.3.2 Configuration ..................2-4 Audio Player....................2-4 2.4.1 Features .....................2-4 2.4.2 Configuration ..................2-5 Audio Recorder ..................2-5...
  • Page 3 Table of Contents 2.12.1 Features .....................2-8 2.12.2 Configuration ..................2-8 2.13 Keyboard....................2-8 2.13.1 Features .....................2-8 2.13.2 Configuration ..................2-8 2.14 Power Manager..................2-8 2.14.1 Features .....................2-8 2.14.2 Configuration ..................2-8 2.15 Clock Manager ..................2-9 2.16 System ......................2-9 2.16.1 Features .....................2-9 2.16.2 Configuration ..................2-9 Section 3 Source Files Organization ..............
  • Page 4 Table of Contents 5.4.2 Generic Modules ................5-28 5.4.3 Useful Functions and Macro-functions ..........5-29 5.4.4 Automatic Screen Refreshing............5-30 5.4.5 Automatic display ................5-31 5.4.6 Software Timers ................5-31 5.4.7 Keyboard Management ..............5-32 Services ....................5-34 5.5.1 Player service ...................5-34 5.5.2 Recorder Service................5-35 5.5.3 Explorer service................5-35 5.5.4 Ebook service ...................5-36 Modules ....................5-37...

  • Page 5: Introduction

    For more information on the AT85DVK-07 development board, refer to the documents “AT85DVK-07 Hardware User’s Guide” and “AT85DVK-07 Demonstration Firmware User’s Manual”, available on the Atmel web site. For more information on the AT85RFD-07 development board, refer to the documents “AT85RFD-07 Hardware User’s Guide”...

  • Page 6: Firmware Features

    Section 2 Firmware Features The following sections describe the AT85C51SND3Bx firmware features and options. Some of the firmware options are not supported by the AT85DVK-07 (e.g. image viewer) or by AT85RFD-07 (e.g. MMC support). MMI Manager This module allows customers to easily develop their own MMI applications. 2.1.1 Features Application management...

  • Page 7: Configuration

    Firmware Features 2.2.2 Configuration Connection Speed – authorize high or full speed (depending on the host) – authorize only full speed enable/disable USB Class used (Mass Storage, HID, CDC) USB device information (vendor ID, product ID, manufacturer name, ...) – product name –...

  • Page 8: Configuration

    Firmware Features Stream Information – synchronized play time – bit rate – sampling frequency – number of channels Tags – ID3 v1.0, v1.1 – ID3 v2.2 and v2.3 Stereo volume control Sound effects: – bass boost – spatial sound Adjustable 3-band EQ –...

  • Page 9: Features

    2.8.1 Features Firmware, codecs, display, fonts update No PC tool install required for end-user Power failure resistant Update file generated by the Atmel In System Programming tool 2.8.2 Configuration Enable/disable update module Enable/disable update auto-start at power-up If update auto-start is enable then configuration of “File Location” on Nand Flash or MMC/SD card.

  • Page 10: Configuration

    Firmware Features – create – delete – rename Disk management – disk Information – format: FAT12, FAT16, FAT32 2.9.2 Configuration Supported file systems Maximum number of files to manage at same time Cache optimization 2.10 Nand Flash This module is the Nand Flash memory library. 2.10.1 Features Support Nand Flash SLC small or large blocks (16KB or 128KB)

  • Page 11: Configuration

    Firmware Features 2.11.2 Configuration Enable/disable Bus format: – automatic: depends on card type – 1-bit 2.12 Display This module is the display management library. 2.12.1 Features 2.12.2 Configuration Interface configuration to fit display controller – type: I80/6800 – timings 2.13 Keyboard This module is the keypad driver.

  • Page 12: Clock Manager

    Firmware Features 2.15 Clock Manager This module is the system clock driver Oscillator Frequency Clock Type: – crystal – oscillator 2.16 System 2.16.1 Features Memory mapping configurable (code & data) Code swap between SND3 and Nand Flash (use system area code) Store a large constant data in the NandFlash (use system area font and display) 2.16.2 Configuration...

  • Page 13: Source Files Organization

    ....ISP files: codec, picture_, font ..........user’s system configuration files ..........user’s MMI peripherals high-level API source code ..........Atmel MCU peripherals drivers source code ..........Atmel high-level memory storage drivers source code ..........Atmel system services source code ..........user’s MMI applications source code ..........Atmel system modules source code ..........code hex and object files...

  • Page 14: Drivers Directory

    Source Files Organization 3.1.3 conf Directory The conf directory contains header files allowing user to configure the Atmel libraries. Its content is detailed in Section 6.....conf_access.h: configuration of the memory access interfaces ..........conf_audio.h: configuration of the audio part (HW and SW) ..........conf_clock.h: configuration of the oscillator frequency...

  • Page 15: Lib_Mem Directory

    .....MMC/SD memory card driver ..........Nand-Flash memory driver 3.1.7 lib_system Directory The lib_system directory contains the Atmel system service source code.......automatic display of time-depending graphical objects ..........code banking load & swap source code ..........inter-process communication library source code ..........memory manipulation routines ..........boot sequence source code...

  • Page 16: Lib_System Directory

    The customer MMI firmware is the code source you have to develop and customize from the software platform delivered with this package. Indeed, this layer is dedicated to inter- face the user with the high-level services provided by the Atmel core firmware and the AT85C51SNDA chip. See Firmware Architecture Section 5.

  • Page 17: Code & Data Management

    256B. The size of code space is limited at 64KB and xdata space is limited at 64KB. 4.1.1 Custom memory The AT85C51SND3B chip uses a 64KB of RAM to store the data and code, this particu- organisation larity permits to configure the memory size according to your needs. 4.1.1.1 Rules xdata space size + code space size = 64KB –...
  • Page 18 Code & Data Management xdata space size, code common size and code bank size* shall be a modulo 512B. Figure 4-1. Memory organisation 64KB RAM data 256B reserved 256B xdata Customizable bank code Customizable Customizable common code Note: *code bank size is optional, see “Code swap” 4-16 AT85C51SND3Bx Firmware User’s Guide 7691A–MP3–08/07...
  • Page 19 Code & Data Management 4.1.1.2 How to configure You must change the configuration in the « option.h » header file by defining following constants: • XDATA_LENGTH • CODE_BANKING • BANK_START_ADDRESS Note: There are no « code size » #define, because this one is automatically computed using XDATA_LENGTH.
  • Page 20 The code load swap mechanism is based on the code banking frame available under the environment Keil µ Vision. Indeed, the assembly file “lib_system\bank- ing\l51_bank.a51” has been deeply customized by Atmel to link code-load-swap routines to the code banking frame. Also, the debugger has been reworked to support the code load swap and the downloading of code banks will be transparent for you in debugging mode in a future software delivery.
  • Page 21 0xC800”. This value defined in the file “option.h” should not be modified since this common code (not banked) is mainly the one of the Atmel system firmware. – Check that the “Bank Area End” value matches with the code range end address defined in the tab “BL51 Locate”.
  • Page 22 ? in player.lin file, e.g. : BANK7(...(0xBE00),?PR?NAV_FILE_RENAME?NAVIGATION) 4.1.2.6 Banking The Atmel firmware stores in the same bank all modules which are used for the same organisation in mode. ATMEL firmware e.g. : in BANK 2, there are the file mmi_player.c, srv_player.c, player.c which are call only in player mode.

  • Page 23: Architecture

    – provides high-level features to the user (audio control, player control, file exploring), thanks to the Atmel core firmware services – gets the Atmel core firmware services with the help of requests and feedbacks The Figure 5-1 gives an overview of this firmware organization and how it fits within its environment.

  • Page 24: Architecture

    Architecture Architecture ATMEL MODULES 5-22 AT85C51SND3Bx Firmware User’s Guide 7691A–MP3–08/07...

  • Page 25: Kernel

    – a task scheduler to run many tasks simultaneously – a communication based on message to manage the no foreeable commands and events – an MMI manager task to manage an MMI applications stack Figure 5-2. Firmware architecture: worm’s eyes view Atmel core firmware task Player task...
  • Page 26 Public routines Processing management Drivers On-chip peripherals On-board devices The Atmel demo firmware implements 8 tasks: – MMI manager task – Power task – USB task – Player task – Recorder task – Viewer task – Explorer task – Update task 5.3.3...
  • Page 27 Architecture “event” is an information dedicated to MMI applications, sent by a task to inform on its status or to give feedback of a previously executed command. These messages are mailed in two separate mailboxes, based on FIFO stacks. The uni-directional communication system is the direct access at the public routines pro- vide by modules.
  • Page 28 Architecture 5.3.3.2 Messages The following functions located in file “lib_system\mailbox\mail.c” make it possible the Management mailing and the delivery of messages. Figure 5-6. Mailbox interface functions Command Command mailbox mailbox mail_send_command( mail_send_command( mail_get_command( mail_get_command( U16 cmd_id, U16 param U16 cmd_id, U16 param U8 task_id, Msg *p_cmd_msg U8 task_id, Msg *p_cmd_msg mail_send_command(...
  • Page 29 Architecture Figure 5-7. MMI manager principle last launched application is MMI_APPLI_X placed at the top highest priority MMI_APPL_IDLE MMI_APPLI_X MMI_APPLI_STATUS MMI_APPLI_IDLE MMI_APPLI_STATUS lowest LIFO application customer priority stack applications mmi manager kernel The MMI application “status” is loaded first in the application stack at the initialization of the MMI manager task.

  • Page 30: Mmi Applications

    To achieve this control and to offer flexibility, they organized in modules, are based on a template and are associated to IDs. This one can be use a services MMI which include a usual code sequence to use provided by ATMEL. 5.4.1...
  • Page 31 Architecture – a “switch-case” processes all in-coming events Figure 5-8. internal switch-case processing This minimal structure to respect is to get a proper control of all new MMI applications by the MMI manager kernel. The three basic system events “EVT_START_APPLI”, EVT_APPLI_KILLED”, EVT_BACK_TO_TOP”...

  • Page 32: Automatic Screen Refreshing

    Architecture Table 5-1. Requests from MMI applications to MMI manager kernel Event Functions or Macro-functions Description Prior. Name Mailed mmgr_activate_mmi_appli( Launches an MMI application by pushing it in the application stack with the help of two arguments: U8 id_appli, U16 param ) - id_appli: the module id defined by the developper in file “mmi\shared\com_appli.h”...

  • Page 33: Automatic Display

    Architecture – Secondly, from this application up to the top one, their screens are redrawn one after the others. Thus, this mechanism makes it possible to redraw superimposed non-full-screen win- dows automatically. 5.4.5 Automatic display The automatic display module is charged with managing the display of time-related graphical objects.
  • Page 34 Architecture T h e n u m b e r o f a v a i l a b l e s o f t w a r e t i m e r s i s s e t t o 1 0 u s i n g t h e m a c r o “NB_TIMER_SOFT”.
  • Page 35 Architecture Figure 5-9 gives a graphical representation of the keypad behavior. Figure 5-9. Keyboard timings and events Events ™ – — – ˜ ˜ ˜ ˜ ˜ ˜ ˜ ˜ š Œ Œ Œ  Ž Ž Ž Ž Ž Ž...

  • Page 36: Services

    Architecture Services The services are provide by Atmel and include the usual MMI sequences. This one per- mits to reduce the code in MMI Applications. 5.5.1 Player service The player service provides a MACRO to start MMI_PLAYER with different options.

  • Page 37: Recorder Service

    Architecture Fonctions Description srvplayer_set_eq() Send to player module the equalizer value srvplayer_eq_modify_predef() Copy the predefine ambiance in the user ambiance definition srvplayer_set_bassboost() Send toplayer module the bassboost state srvplayer_set_vsurround() Send toplayer module the virtual surround state srvplayer_set_speed() Send toplayer module the speed level srvplayer_pause() Pause the play of current file srvplayer_ffw()

  • Page 38: Ebook Service

    Architecture Fonctions Description srvexp_list_getname_parent() Get the name of directory or disk correponding at file list srvexp_enter() Enter in a disk/directory selected in DISPLAY list Note: A new list is create and DISPLAY list corresponding at the beginning of list srvexp_gotoparent() Go to parent directory/disk Note: A new list is create and DISPLAY list include the previous parent dir srvexp_format()

  • Page 39: Modules

    Architecture Modules Atmel provides the system modules which permit to use the SND3 chip feature. The modules are USB, player, recorder, viewer, power, explorer and update. The USB modules offers its services to the MMI applications with the help of com- mands/events or public routines.

  • Page 40: Player Interface

    Architecture Event Label Description EVT_USB_HOST_HID_MOUSE_BTN2 USB host has received an event “clic bouton 2” via a HID device. EVT_USB_HOST_HID_MOUSE_BTN3 USB host has received an event “clic bouton 3” via a HID device. EVT_USB_HOST_HID_MOUSE_MOVE USB host has received an event “mouse move” via a HID device.

  • Page 41: Recorder Interface

    Architecture Table 5-16. Player publics routines Routines Description player_on() Turn the audio controller on player_off() Turn the audio controller off player_play_file()* Play the music file selected on current file system navigator player_restart_play()* Restart playing at beginning player_pause()* Pause the ongoing play player_stop()* Stop a playing file and close file player_fast_foward()*...

  • Page 42: Viewer Interface

    Architecture Table 5-18. Recorder public routines Routines Description record_on() Initialize the record with: - microphone or line-in as input. - current file selected on current file system navigator. record_off() Stop the recording and close file record_start() Start the recording record_gettime() Get the recording time recorder_task_start() Enable recorder task (it must be call after record_start() successfull)

  • Page 43: Explorer Interface

    Architecture 5.6.5 Power Interface The Power module controls the power management of the device: – automatically jumps in idle mode to reduce power consumption, – provides battery level information, – provides power-off control, – provides alarm mechanism on a specified low battery level. Table 5-21.

  • Page 44: Update Interface

    Architecture In this document, only the commands and events are described, because a specific doc- ument on FileSystem Atmel exists. These services are available through public routines, only the copy/paste features may be use via a commands/event to not break the scheduler.

  • Page 45: Debug Trace Text

    Architecture Debug trace text The TEXT TRACE feature is available only in OCD mode because the text trace is sent to KEIL IDE via OCD dongle. To use it, you must: • uncomment line 14 "#define _TRACE_ (ENABLE)" in debug.c •...

  • Page 46: Firmware Configuration

    The file conf_mmi.h configures exclusively the Customer MMI layer and more pre- cisely the MMI applications organized in modules (see Section 3.1.8). Files configuring both the Customer MMI and the Atmel system layers These files are the ones that configure the source code of custom MMI peripherals: –...
  • Page 47 Firmware Configuration Files configuring the global firmware Two files are under the top-level directory of the firmware package: – config.h: configures the system. Should not be modified. – option.h: configures (de-)activation of peripherals. Also, defines compilation switches. 6-46 AT85C51SND3Bx Firmware User’s Guide 7691A–MP3–08/07...

  • Page 48: Configuration Files

    Firmware Configuration Configuration This section describes feature by feature the available configuration. In the following tables, the default parameters values are marked in square brackets. Files 6.2.1 Control Access The “conf_access.h” file is used to configure the access control of all the system memo- ries.
  • Page 49 Firmware Configuration Table 6-6. Audio output settings Definition Label Description Values AUDIO_OUT_TYPE Internal (on-chip) or external INTERNAL_DAC audio DAC [EXTERNAL_DAC] AUDIO_OUT_DRIVE Impedance drive LINE_OUT_DRIVE (50kΩ) internal audio DAC: [INTERNAL_HEADSET_DRIVE] (32Ω) - high impedance (50kΩ) EXTERNAL_HEADSET_DRIVE (50kΩ) - low impedance (32Ω) AUDIO_EXT_HEAD_AMP_ON Output enabling the switch [P1_6]...

  • Page 50: Clock

    Firmware Configuration 6.2.3 Clock The “conf_clock.h” file is used to configure the clock that drives the chip. Table 6-8. Clock settings Definition Label Description Values FOSC Oscillator frequency From [12000] up to 26000 (unit in KHz) CLK_DRIVE Oscillator type: [CLK_CRYSTAL] - Crystal connected on X1/X2 pins CLK_GENERATOR - External oscillator drives X1 input...

  • Page 51: Setting

    Firmware Configuration Definition Label Description Values EXP_MAX_RANGE_RAND Size of the list to random (option of explorer module) 1 to 100 (unit 8 files) EXP_GET_RAND Process use to get a random value (option of explorer module) use TL0 register 6.2.5 Setting The “conf_explorer.h”...
  • Page 52 Firmware Configuration Keypad layout configuration: The keyboard driver can support 5 kinds of matrices up to 12 keys as detailed in the fol- lowing figures. Table 6-13. Keypad Layout Definition Label Description Values KBD_USE_NB_KEYS Number of key leads to a dedicated [KBD_12_KEYS] matrix layout KBD_10_KEYS...
  • Page 53 Firmware Configuration – KBD_9_KEYS: a 3x3 matrix keyboard organization KEY_ KEY_ KEY_ R0_C0 R0_C1 R0_C2 KEY_ KEY_ KEY_ P1.3 R1_C0 R1_C1 R1_C2 KEY_ KEY_ KEY_ P1.4 R2_C0 R2_C1 R2_C2 P1.0 P1.1 P1.2 – KBD_6_KEYS: a 3x2 matrix keyboard organization KEY_ KEY_ KEY_ R0_C0...

  • Page 54: Lcd Display

    Firmware Configuration Standard Key definition: standard keys used in MMI applications are mapped here onto the keyboard matrix: Table 6-15. Standard key definition for the AT85DVK07 board version 0.0.1 Standard key Labels Matrix key Labels KEY_LOCK KEY_R1_C1 KEY_MENU KEY_R0_C3 KEY_CENTER KEY_R2_C2 KEY_RIGHT KEY_R2_C3...

  • Page 55: Mmc / Sd Card

    Firmware Configuration Table 6-19. Main features Definition Label Description Values EMBEDDED_CODE_FONT Allow local font usage in code ENABLED [DISABLED] TEXT_SCROLLING Implement or not the code to have the text [ENABLED] scrolling available DISABLED IMAGE_SUPPORT Implement or not the functions to display ENABLED JPEG pictures [DISABLED]...

  • Page 56: Mmi Applications

    Firmware Configuration Table 6-24. Settings Definition Label Description Values MMC_CARD_SECU_FUNC Secured functions ENABLE [DISABLE] SD_4_BIT 4-bit data bus [ENABLE] DISABLE 6.2.9 MMI Applications The “conf_mmi.h” file is used to configured the user’s MMI applications. Table 6-25. Features activation Definition Label Description Values GAME_SNAKE...

  • Page 57: Nand-Flash Memory

    Nand Flash Type NF_TYPE_*: defines the label of one of the NF supported by the system firmware The list of supported Nand Flash is available on ATMEL site (Supported-Nand- Flash.pdf) If an auto-detection of the NF is required, please put in comments this define and set to TRUE either the following defines: Table 6-28.

  • Page 58: Scheduler Module

    Firmware Configuration Table 6-30. Power type Definition Label Description Values POWER_SOURCE power level under INTERNAL_VLV_DC_DC which the system has to EXTERNAL_VLV_REGULATOR run: very low (1.8V) or low [EXTERNAL_LV_DC_DC] (3.3V) EXTERNAL_LV_REGULATOR POWER_EXT_DC_ON External DC-DC control pin [P3_4] I/O pins mnemonics are defined in mcu.h file (See Section 3.1.5).

  • Page 59: Usb Module

    Include class CDC in device mode ENABLED [DISABLED] USB_DEVICE_SPEED_HIGH Autorize HIGH speed in device mode [ENABLED] DISABLED USB_DEVICE_VENDOR_ID 16-bit vendor ID [0xXXXX] (Atmel vendor ID: 0x03EB) USB_DEVICE_PRODUCT_ID 16-bit product ID [0xXXXX] (Atmel Mass Storage: 0x2036) USB_DEVICE_RELEASE_NUMBER 16-bit release number [0x0100] USB_DEVICE_MANUFACTURER_NAME Manufacturer name (ASCII) “ATMEL”...

  • Page 60: Firmware Update

    Firmware Configuration Table 6-34. Device CDC class configuration Definition Label Description Values USB_DEVICE_CDC_DATA_NAME_INTERFACE Name of CDC data class interface "CDC DATA ATMEL" USB_DEVICE_CDC_COM_NAME_INTERFACE Name of CDC com class interface "CDC COM ATMEL" USB_DEVICE_CDC_COM Implement the CDC com interface for CDC [ENABLED] DISABLED Table 6-35.
  • Page 61 Atmel does not make any commitment to update the information contained herein. Unless specifically providedot- herwise, Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as compo- nents in applications intended to support or sustain life.
  • Page 62 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Atmel AT85RFD-07...

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