// flash.cpp : higher-level functions for flashing the chip // #include "scalar_types.h" // (U)INT8/16/32 #include "Uart.h" // platform abstraction for UART #include "client.h" // client functions // read the manufacturer and device ID int ReadID(tUartHandle serial_handle, UINT32 base, UINT8* pManufacturerID, UINT8* pDeviceID) { base &= 0xFFF80000; // round down to 512k align, to make shure WriteByte(serial_handle, base + 0x5555, 0xAA); // enter command mode WriteByte(serial_handle, base + 0x2AAA, 0x55); WriteByte(serial_handle, base + 0x5555, 0x90); // ID command SLEEP(20); // Atmel wants 20ms pause here *pManufacturerID = ReadByte(serial_handle, base + 0); *pDeviceID = ReadByte(serial_handle, base + 1); WriteByte(serial_handle, base + 0, 0xF0); // reset flash (back to normal read mode) SLEEP(20); // Atmel wants 20ms pause here return 0; } // erase the sector which contains the given address int EraseSector(tUartHandle serial_handle, UINT32 address) { UINT32 base = address & 0xFFF80000; // round down to 512k align WriteByte(serial_handle, base + 0x5555, 0xAA); // enter command mode WriteByte(serial_handle, base + 0x2AAA, 0x55); WriteByte(serial_handle, base + 0x5555, 0x80); // eraze command WriteByte(serial_handle, base + 0x5555, 0xAA); // enter command mode WriteByte(serial_handle, base + 0x2AAA, 0x55); WriteByte(serial_handle, address, 0x30); // eraze the sector SLEEP(25); // sector eraze time: 25ms return 0; } // erase the whole flash int EraseChip(tUartHandle serial_handle, UINT32 base) { base &= 0xFFF80000; // round down to 512k align, to make shure WriteByte(serial_handle, base + 0x5555, 0xAA); // enter command mode WriteByte(serial_handle, base + 0x2AAA, 0x55); WriteByte(serial_handle, base + 0x5555, 0x80); // eraze command WriteByte(serial_handle, base + 0x5555, 0xAA); // enter command mode WriteByte(serial_handle, base + 0x2AAA, 0x55); WriteByte(serial_handle, base + 0x5555, 0x10); // chip eraze command SLEEP(100); // chip eraze time: 100ms return 0; } // program a bunch of bytes "by hand" int ProgramBytes(tUartHandle serial_handle, UINT32 address, UINT8* pData, UINT32 size) { UINT32 base = address & 0xFFF80000; // round down to 512k align while (size--) { WriteByte(serial_handle, base + 0x5555, 0xAA); // enter command mode WriteByte(serial_handle, base + 0x2AAA, 0x55); WriteByte(serial_handle, base + 0x5555, 0xA0); // byte program command WriteByte(serial_handle, address++, *pData++); // UART protocol is slow enough such that I don't have to wait 20us here } return 0; } 6abff'>firmware/export/wmcodec.h
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/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2006 by Marcoen Hirschberg
 *
 * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/

void wmcodec_write(int reg, int data);
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