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-rwxr-xr-xdigital/avr/modules/spi/Makefile5
-rwxr-xr-xdigital/avr/modules/spi/Makefile.module1
-rw-r--r--digital/avr/modules/spi/README24
-rw-r--r--digital/avr/modules/spi/spi.c94
-rw-r--r--digital/avr/modules/spi/spi.h79
-rwxr-xr-xdigital/avr/modules/spi/test/Makefile17
-rw-r--r--digital/avr/modules/spi/test/avrconfig.h86
-rw-r--r--digital/avr/modules/spi/test/spi_host.c107
-rw-r--r--digital/avr/modules/spi/test/test_spi.c59
9 files changed, 472 insertions, 0 deletions
diff --git a/digital/avr/modules/spi/Makefile b/digital/avr/modules/spi/Makefile
new file mode 100755
index 00000000..fa689635
--- /dev/null
+++ b/digital/avr/modules/spi/Makefile
@@ -0,0 +1,5 @@
+BASE = ../..
+DOC = spi.html
+EXTRACTDOC = spi.h spi.c
+
+include $(BASE)/make/Makefile.gen
diff --git a/digital/avr/modules/spi/Makefile.module b/digital/avr/modules/spi/Makefile.module
new file mode 100755
index 00000000..f2529dfa
--- /dev/null
+++ b/digital/avr/modules/spi/Makefile.module
@@ -0,0 +1 @@
+spi_SOURCES = spi.c
diff --git a/digital/avr/modules/spi/README b/digital/avr/modules/spi/README
new file mode 100644
index 00000000..44092fd9
--- /dev/null
+++ b/digital/avr/modules/spi/README
@@ -0,0 +1,24 @@
+avr.spi - SPI AVR module.
+
+Serial Peripheral Inteface for AVR. See modules README for more details about
+AVR modules.
+
+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.
diff --git a/digital/avr/modules/spi/spi.c b/digital/avr/modules/spi/spi.c
new file mode 100644
index 00000000..e99055e0
--- /dev/null
+++ b/digital/avr/modules/spi/spi.c
@@ -0,0 +1,94 @@
+/* spi.c */
+/* {{{
+ *
+ * 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 "spi.h"
+
+/** Spi driver context. */
+static spi_t spi_global;
+
+/** 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)
+{
+ SPRC = sprc;
+ spi_global.cb = cb;
+ spi_global.recv_user_data = user_data;
+}
+
+/** 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)
+{
+ uint i;
+
+ for ( i = 0; i < length; i++)
+ {
+ // Insert the data in the data register, the SPI will begin to send it
+ // automatically.
+ SPDR = data[i];
+
+ // Wait the end of the transmission.
+ while(!(SPSR & (1<<SPIF)));
+ }
+}
+
+/** Receive a data from the SPI bus.
+ * \return the data received from the bus.
+ */
+uint8_t *
+spi_recv(void);
+{
+ /* Wait for reception complete */
+ while(!(SPSR & (1<<SPIF)));
+
+ /* Return data register */
+ 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.cb) (spi_global.user_data);
+}
+
diff --git a/digital/avr/modules/spi/spi.h b/digital/avr/modules/spi/spi.h
new file mode 100644
index 00000000..e4de8f07
--- /dev/null
+++ b/digital/avr/modules/spi/spi.h
@@ -0,0 +1,79 @@
+#ifndef spi_h
+#define spi_h
+/* spi.h */
+/* {{{
+ *
+ * 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.
+ *
+ * }}} */
+
+/** Call back use to call the user function on the reception of a data. */
+typedef void (*spi_recv_cb_t) (void *user_data);
+
+struct spi_t
+{
+ /** Call back function. */
+ spi_recv_cb_t recv_cb;
+ /** user data on data reception. */
+ void *recv_user_data;
+};
+typedef struct spi_t spi_t;
+
+/** 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);
+
+/** 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);
+
+/** Receive a data from the SPI bus.
+ * \return the data received from the bus.
+ */
+uint8_t
+spi_recv(void);
+
+/** Return the status register from the SPI driver.
+ * \return the status register value
+ */
+uint8_t
+spi_status(void);
+
+/** Function called by the interruption if an IT is requested.
+ *
+ */
+void
+spi_catch_it(void);
+
+#endif /* spi_h */
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 <stdint.h>
+#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 <stdint.h>
+#include <common.h>
+#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;
+}
+