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Ddr-Z8e - Device DriveR for Z8-Encore Copyright (C) 2003-2009, Lonfield C&D Contact: Nils Paulsson Addr: Engelbrektsgatan 7A, SE-58221, Linkoping, Sweden. Web : http://ddrz8e.sourceforge.net/ This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. DESCRIPTION This is a device driver package for the Zilog Z8Encore! (r) MCU. It's a source code only package to be used together with Zilog's development tools ZDS II (free to download at www.zilog.com). REVISION HISTORY 2009-12-01 - Version 1.00-RC1 released 2009-11-24 - Version 0.11 released 2009-11-16 - Version 0.10 released 2009-10-20 - Alpha version 0.09 released 2007-03-13 - Initial alpha version uploaded to Sourceforge WHERE TO START First, install the package. Then read the comments in the CONFIGURE.H file in the root directory of the software. Also, check out the sample directory. Further more there is also an old and not yet finished device driver reference document in the Documentation directory. You may find useful information there but be aware that it’s based on both deprecated software and hardware (Zilog Encore! 640). USE AT YOUR OWN RISK!!! INSTALLATION To install the package, uncompress the zip-at a suitable location. MODULES ADC – This is a device driver for the built-in A/D converter. The driver supports configuration, interrupt driven A/D-conversion as well as polled. BINARY - Defines binary number representation to be used directly in code, e.g. b1001 or B0101. The module also has some functions to rotate and multiply bytes. These functions are inline assembly code and may or may not work depending on memory model, changes in inline assembly calling convention etc. DEBUG - Adds support for debugging. The two main macros are DBG_ASSERT() and DBG_ASSERT_STATIC(). The former is a generic assert-macro aimed for user code. The later is used by the device driver code to check that device drivers receives legal hardware addresses, buffer sizes etc. The debug module also adds support for catching illegal instructions. FLASH - Adds support for reading, writing, locking and configuring the flash memory of the MCU. This code may collide with memory segments defined in ZDS II version 4.11.0. I2C - This is an asynchronic interrupt driven device driver for the built-in I2C-controller. The communication is frame based using user provided communication buffers. INTERUPT – This is a device driver for the built-in interrupt controller supporting configuration, priority, enabling/disabling of specific interrupts. IO – This is the basic IO device driver. Besides DIO it also has definitions for all hardware port addresses, IO-pin configuration and setting/getting specific IO-pins. This module is one of the very basic device driver, thus also used in almost every other device driver module. REGISTER – Defines the data type to be used to address specific hardware addresses. Both absolute as well as absolute + offset addressing is supported. SERIAL – Device driver for the built in RS232 controllers. The communication is asynchronous, interrupt driven and frame based using user provided communication buffers. The device driver supports individual configuration (during execution time) of each controller for baud rate, parity, data bits, flow control (RTS/CTS or no flow control) and communication time out. SPI – Device driver for the built in SPI-controller. The communication is asynchronous, interrupt driven and frame based using user provided communication buffers. The device driver also handles various configuration aspects of the SPI-controller. TIMER – Device driver for the built in timer controller. The driver supports configuration and most of the various modes of operation. TICKER – This is an add-on device driver for accurate periodic interrupt generation. This can e.g. be useful when very specific delays are needed or as a substitute for time measurement. Besides using the built in timers, the ticker module can also use the SPI, I2C or one of the RS232 controllers as time source. WDT – Device driver for the watch dog timer. GENERAL NOTES - The source code of every project has to be configured in a CONFIGURE.H file. A template with all possible options are located in the root directory of the installed DdrZ8e root directory. - Compiler warnings (222) about statements having no effect can mostly be ignored. They generally originate from certain macros, e.g. debug-macros that end up being empty statements owing to the specific settings of the configuration in use. - There are often two versions of a given function or procedure in the device driver code. The first version is a standard C-function or C-procedure that provides type checking during compilation and linking. The second version is an inline macro version without the overhead of a C function call, i.e. smaller and faster code. Inline versions are intended for release code and the C-calling versions are for development to facilitate debugging etc. Which version to use is configured in each project's CONFIGURE.H file (parameter CFG_INLINE_MACRO). - When using a specific module, e.g. the serial RS232-module, include both the *.c file and the *_inline.c file. For the serial module that would be "serial.c" as well as "serial_inline.c". The *.c file provides the device driver code and the *_inline.c file provide wrapper calls for inline macros (see previous paragraph). - The sample directory has at least one sample project for each device driver module. Since ZDS II has a habit of using absolute paths the sample projects probably have to be updated depending on where the DdrZ8e source code is installed NOTES REVISION 1.00-RC1 - This is the 1st release candidate for the 1.00 official release. - Updated the timer (TMR) module's code and documentation to support ZDS 4.11.0 as well as Zilog Encore! XP 642 - Updated the ticker (TCK) module's code and documentation to support ZDS 4.11.0 as well as Zilog Encore! XP 642 - Updated the text (TXT) module's code and documentation to support ZDS 4.11.0 as well as Zilog Encore! XP 642 - The serial LCD module is officially not supported but the code is still included in the release. NOTES REVISION 0.11 - Updated the digital IO module's code and documentation to support ZDS 4.11.0 as well as Zilog Encore XP 642 - Updated the interrupt (IRQ) module's code and documentation to support ZDS 4.11.0 as well as Zilog Encore XP 642 - Updated the serial (RS232) module's code and documentation to support ZDS 4.11.0 as well as Zilog Encore XP 642 - Updated the SPI module's code and documentation to support ZDS 4.11.0 as well as Zilog Encore XP 642 - Fixed a problem with overlapping segments for flash option bits - Updated the watchdog timer (WDT) module's code and documentation to support ZDS 4.11.0 as well as Zilog Encore XP 642 NOTES REVISION 0.10 - Updated and cleaned up modules ADC, BINARY, DEBUG, FLASH and I2C to be compatible with Zilog Encore XP 642 and ZDS II 4.11.0. - Brought the documentation for modules ADC, BINARY, DEBUG, FLASH and I2C up to date - Updated documentation for overall module description and software configuration (chapters 1 - 4). - Fixed a signed/unsigned bug in the TEXT module. - Clean up the config.h files in samples. - Added documentation about the inline wrapper functions - Fixed a bug in the inline perl compiler that couldn't handle pointer definitions NOTES REVISION 0.09 - This release isn't targeted for any specific version of the Zilog development tool. This is almost exclusively owing to quality and backward compatibility issues with earlier versions of the Zilog tools. This version of Ddr-Z8e does, however, build on the ZDS II version 4.11.0. The source code and samples have been verified to work at some time in history, starting with ZDS II version 4.6.1 and Encore! 640, but far from all samples have been tested on the latest versions of software and hardware. - The ADC-module sample code is old and currently targeted for the Zilog Encore" 640 evaluation board. The device driver may or may not work with the 642/XP family. - The support for slave mode in the SPI-module has not been tested.
Source: readme_1_00_RC1.txt, updated 2009-12-01