/* test_spi.c */ /* avr.spi - SPI AVR module. {{{ * * 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 "common.h" #include "io.h" #include "modules/proto/proto.h" #include "modules/uart/uart.h" #include "modules/spi/spi.h" #include "modules/utils/utils.h" void proto_callback (uint8_t cmd, uint8_t size, uint8_t *args) { /* TODO: command to select a slave. */ #define c(cmd, size) (cmd << 8 | size) switch (c (cmd, size)) { case c ('z', 0): utils_reset (); break; case c ('s', 1): spi_send (args[0]); break; case c ('r', 0): proto_send1b ('R', spi_recv ()); break; case c ('r', 1): proto_send1b ('R', spi_send_and_recv (args[0])); break; default: proto_send0 ('?'); return; } proto_send (cmd, size, args); #undef c } int main (void) { spi_init (SPI_MASTER, SPI_MODE_0, SPI_MSB_FIRST, SPI_FOSC_DIV128); uart0_init (); sei (); proto_send0 ('z'); while (1) proto_accept (uart0_getc ()); }