From 4d10e19afe45695f30e7bf408757e92893f3fd2c Mon Sep 17 00:00:00 2001 From: Nélio Laranjeiro Date: Sun, 10 Feb 2008 23:07:45 +0100 Subject: SPI driver for AVR. It's only a first shoot, it has not been tested in the real AVR. --- digital/avr/modules/spi/test/Makefile | 17 +++++ digital/avr/modules/spi/test/avrconfig.h | 86 +++++++++++++++++++++++++ digital/avr/modules/spi/test/spi_host.c | 107 +++++++++++++++++++++++++++++++ digital/avr/modules/spi/test/test_spi.c | 59 +++++++++++++++++ 4 files changed, 269 insertions(+) create mode 100755 digital/avr/modules/spi/test/Makefile create mode 100644 digital/avr/modules/spi/test/avrconfig.h create mode 100644 digital/avr/modules/spi/test/spi_host.c create mode 100644 digital/avr/modules/spi/test/test_spi.c (limited to 'digital/avr/modules/spi/test') diff --git a/digital/avr/modules/spi/test/Makefile b/digital/avr/modules/spi/test/Makefile new file mode 100755 index 00000000..ba09e125 --- /dev/null +++ b/digital/avr/modules/spi/test/Makefile @@ -0,0 +1,17 @@ +BASE = ../../.. +PROGS = test_spi +test_spi_SOURCES = test_spi.c spi_host.c +MODULES = proto uart utils +CONFIGFILE = avrconfig.h +# atmega8, atmega8535, atmega128... +AVR_MCU = atmega8 +# -O2 : speed +# -Os : size +OPTIMIZE = -O2 + +# Test compilations. +#TEST_MCU = atmega8 atmega8535 atmega128 +#TEST_CONFIGFILES = avrconfig_ring.h avrconfig_polling.h avrconfig_twoports.h +#avrconfig_twoports_TEST_MCU = atmega128 + +include $(BASE)/make/Makefile.gen diff --git a/digital/avr/modules/spi/test/avrconfig.h b/digital/avr/modules/spi/test/avrconfig.h new file mode 100644 index 00000000..ac0b3b3a --- /dev/null +++ b/digital/avr/modules/spi/test/avrconfig.h @@ -0,0 +1,86 @@ +#ifndef avrconfig_h +#define avrconfig_h +/* avrconfig.h */ +/* avr.spi - SPI AVR module. {{{ + * + * Copyright (C) 2008 Nélio 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. + * + * }}} */ + +/* global */ +/** AVR Frequency : 1000000, 1843200, 2000000, 3686400, 4000000, 7372800, + * 8000000, 11059200, 14745600, 16000000, 18432000, 20000000. */ +#define AC_FREQ 14745600 + +/* uart - UART module. */ +/** Select hardware uart for primary uart: 0, 1 or -1 to disable. */ +#define AC_UART0_PORT 0 +/** Baudrate: 2400, 4800, 9600, 14400, 19200, 28800, 38400, 57600, 76800, + * 115200, 230400, 250000, 500000, 1000000. */ +#define AC_UART0_BAUDRATE 115200 +/** Send mode: + * - POLLING: no interrupts. + * - RING: interrupts, ring buffer. */ +#define AC_UART0_SEND_MODE RING +/** Recv mode, same as send mode. */ +#define AC_UART0_RECV_MODE RING +/** Character size: 5, 6, 7, 8, 9 (only 8 implemented). */ +#define AC_UART0_CHAR_SIZE 8 +/** Parity : ODD, EVEN, NONE. */ +#define AC_UART0_PARITY EVEN +/** Stop bits : 1, 2. */ +#define AC_UART0_STOP_BITS 1 +/** Send buffer size, should be power of 2 for RING mode. */ +#define AC_UART0_SEND_BUFFER_SIZE 32 +/** Recv buffer size, should be power of 2 for RING mode. */ +#define AC_UART0_RECV_BUFFER_SIZE 32 +/** If the send buffer is full when putc: + * - DROP: drop the new byte. + * - WAIT: wait until there is room in the send buffer. */ +#define AC_UART0_SEND_BUFFER_FULL WAIT +/** In HOST compilation: + * - STDIO: use stdin/out. + * - PTS: use pseudo terminal. */ +#define AC_UART0_HOST_DRIVER STDIO +/** Same thing for secondary port. */ +#define AC_UART1_PORT -1 +#define AC_UART1_BAUDRATE 115200 +#define AC_UART1_SEND_MODE RING +#define AC_UART1_RECV_MODE RING +#define AC_UART1_CHAR_SIZE 8 +#define AC_UART1_PARITY EVEN +#define AC_UART1_STOP_BITS 1 +#define AC_UART1_SEND_BUFFER_SIZE 32 +#define AC_UART1_RECV_BUFFER_SIZE 32 +#define AC_UART1_SEND_BUFFER_FULL WAIT +#define AC_UART1_HOST_DRIVER PTS + +/* proto - Protocol module. */ +/** Maximum argument size. */ +#define AC_PROTO_ARGS_MAX_SIZE 8 +/** Callback function name. */ +#define AC_PROTO_CALLBACK proto_callback +/** Putchar function name. */ +#define AC_PROTO_PUTC uart0_putc +/** Support for quote parameter. */ +#define AC_PROTO_QUOTE 1 + +#endif /* avrconfig_h */ diff --git a/digital/avr/modules/spi/test/spi_host.c b/digital/avr/modules/spi/test/spi_host.c new file mode 100644 index 00000000..9badb9bd --- /dev/null +++ b/digital/avr/modules/spi/test/spi_host.c @@ -0,0 +1,107 @@ +/* spi_host.c */ +/* avr.spi - SPI AVR module. {{{ + * + * Copyright (C) 2008 Nélio 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 +#include "io.h" +#include "common.h" +#include "modules/proto/proto.h" +#include "modules/spi/spi.h" + +/** Spi driver context. */ +static spi_t spi_global; + +#ifdef HOST +static volatile uint8_t SPCR; +static volatile uint8_t SPDR; +static volatile uint8_t SPSR; +#endif + +/** Initialise the SPI Control Register. + * \param sprc the sprc register data to be store in the register. + * \param cb the function call back to call the user which receive the data. + * \param user_data the user data to be provieded in the function call back. + */ +void +spi_init(uint8_t sprc, spi_recv_cb_t cb, void *user_data) +{ + SPCR = sprc; + spi_global.recv_cb = cb; + spi_global.recv_user_data = user_data; +} + +/** Uninitialise the SPI module. + * Unused on the target + */ +void +spi_uninit (void) +{ +} + +/** Send a data to the Slave. + * \param data the data to send + * \param length the length of the data in bytes. + */ +void +spi_send(uint8_t *data, u8 length) +{ + uint8_t i; + + for ( i = 0; i < length; i++) + { + proto_send0 (data[i]); + } +} + +/** Receive a data from the SPI bus. + * \return the data received from the bus. + */ +uint8_t +spi_recv(void) +{ + return SPDR; +} + +/** Return the status register from the SPI driver. + * \return the status register value + */ +uint8_t +spi_status(void) +{ + return SPSR; +} + +/** Function called by the interruption if an IT is requested. + * + */ +void +spi_catch_it(void) +{ + // call the call back. + (*spi_global.recv_cb) (spi_global.recv_user_data); +} + +void +proto_callback (uint8_t cmd, uint8_t size, uint8_t *args) +{ +} diff --git a/digital/avr/modules/spi/test/test_spi.c b/digital/avr/modules/spi/test/test_spi.c new file mode 100644 index 00000000..08e34db7 --- /dev/null +++ b/digital/avr/modules/spi/test/test_spi.c @@ -0,0 +1,59 @@ +/* test_spi.c */ +/* avr.spi - SPI AVR module. {{{ + * + * Copyright (C) 2008 Nélio 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 +#include +#include "io.h" +#include "../spi.h" + +#ifdef HOST +extern volatile uint8_t SPDR; +#endif + +/** Call back function to be called on the AVR interruption */ +void +spi_interruption_function (void *user_data) +{ +} + +int +main (void) +{ + uint8_t test [10]; + uint8_t res; + + //initialise the spi. + spi_init (0x14, spi_interruption_function, 0x0); + + test[0] = 0x2; + test[1] = 0x3; + test[2] = 0x4; + + spi_send (test, 3); + + res = spi_recv (); + + return 0; +} + -- cgit v1.2.3