/* flash.c */ /* {{{ * * Copyright (C) 2008 NĂ©lio Laranjeiro * * APBTeam: * Web: http://apbteam.org/ * Email: team AT apbteam DOT org * * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * }}} */ #include "flash.h" #include "flash_sst.h" #include "flash_at.h" #include "modules/spi/spi.h" uint8_t flash_init (void) { uint8_t rsp[3]; uint8_t res; AC_FLASH_PORT |= _BV(AC_FLASH_BIT_SS); AC_FLASH_DDR |= _BV(AC_FLASH_BIT_SS); /* send the read-ID instruction. */ spi_init (SPI_MASTER, SPI_CPOL_FALLING | SPI_CPHA_SETUP, SPI_MSB_FIRST, SPI_FOSC_DIV16); FLASH_CS_ENABLE; spi_send (FLASH_SST_CMD_READ_ID); rsp[0] = spi_recv (); rsp[1] = spi_recv (); rsp[2] = spi_recv (); FLASH_CS_DISABLE; switch (rsp[0]) { case FLASH_SST_MANUFACTURER_ID: flash_sst_init (); flash_init_sst (); res = 1; break; case FLASH_AT_MANUFACTURER_ID: flash_at_init (); flash_init_at (); res = 1; break; default: res = 0; } return res; }