FFSWrapper
Overview
Module which wraps Flash File System into RAM memory
Discussion
Audio Weaver module which constructs Flash File System instance from the address in RAM, which is used as input e.g. to wave player supporting FFS. This module accepts file system start address on input pin, constructs file system structure instance and send it through the output pin. This module supports additional argument through which user can specify Audio Weaver Flash File System (.bin) file name to simulate functionality on Native-PC target.
On the Native-PC target, input pin is ignored and flash file system is constructed from file name supplied through the argument. If the file name is empty input pin will be checked.
On a 64-bit system, user has to provide the 64-bit address of a bin file stored in RAM on two channels of fsStartAddr, with lower 32-bits of the address in the first channel (index 0) and upper 32-bits of the address in the second channel (index 1).
Similarly the module outputs a 64-bit address on fsInstance output pin.
Type Definition
typedef struct _ModuleFFSWrapper
{
ModuleInstanceDescriptor instance; // Common Audio Weaver module instance structure
INT32 isFFSValid; // Internal flag to control FFS bin file handling (used only for Native-PC targets)
INT32 FFSFileNameLength; // Length of the FFS file path (used only for Native-PC targets)
INT32* FFSFileName; // Name and path of the AWE Flash File System (.bin) file (used only for Native-PC targets)
INT32* FFSInstance; // AWE Flash File System instance structure
UINT32 * FFSStartAddrPtr; // AWE Flash File System start address in RAM
UINT32 * FFSInstancePtr; // AWE Flash File System instance pointer
} ModuleFFSWrapperClass;
Variables
Properties
Name | Type | Usage | isHidden | Default value | Range | Units |
isFFSValid | int | state | 1 | 1 | Unrestricted | |
FFSFileNameLength | int | const | 1 | 1 | Unrestricted | |
FFSFileName | int* | parameter | 1 | [40 x 1] | Unrestricted | |
FFSInstance | int* | state | 1 | [1 x 1] | Unrestricted | |
FFSStartAddrPtr | UINT32 * | state | 1 | Unrestricted | ||
FFSInstancePtr | UINT32 * | state | 1 | Unrestricted |
Pins
Input Pins
Name: FFSStartAddr
Description: FFS start address in RAM
Data type: int
Channel range: Unrestricted
Block size range: 1
Sample rate range: Unrestricted
Complex support: Real
Output Pins
Name: FFSInstancePtr
Description: AWE Flash File System instance pointer
Data type: int
MATLAB Usage
File Name: ffs_wrapper_module.m
M=ffs_wrapper_module(NAME, AWE_FFS_BIN_FILENAME)
Audio Weaver module which constructs Flash File System instance from the
address in RAM, which is used as input, e.g. to wave player supporting FFS.
This module accepts file system start address on input pin, constructs file
system structure instance and send it through the output pin.
This module supports additional argument through which user can specify
Audio Weaver flash file system bin file name to simulate functionality
on Native-PC target.
Arguments:
NAME - name of the module.
AWE_FFS_BIN_FILENAME - AudioWeaver Flash File System (.bin) file name
Copyright 2022. DSP Concepts, Inc. All Rights Reserved.
AudioWeaverModule [This tag makes it appear under awe_help]