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-rw-r--r--digital/avr/modules/flash/Makefile.module2
-rw-r--r--digital/avr/modules/flash/flash_io.host.c168
-rw-r--r--digital/avr/modules/flash/flash_io.host.h74
3 files changed, 243 insertions, 1 deletions
diff --git a/digital/avr/modules/flash/Makefile.module b/digital/avr/modules/flash/Makefile.module
index 1cb45350..e9ec103c 100644
--- a/digital/avr/modules/flash/Makefile.module
+++ b/digital/avr/modules/flash/Makefile.module
@@ -1 +1 @@
-flash_SOURCES=flash.avr.c flash.host.c flash.c
+flash_SOURCES=flash.avr.c flash.host.c flash.c flash_io.host.c
diff --git a/digital/avr/modules/flash/flash_io.host.c b/digital/avr/modules/flash/flash_io.host.c
new file mode 100644
index 00000000..a6b5afea
--- /dev/null
+++ b/digital/avr/modules/flash/flash_io.host.c
@@ -0,0 +1,168 @@
+/* flash_io.host.c */
+/* avr.flash - AVR Flash SPI use. {{{
+ *
+ * Copyright (C) 2009 Nelio 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_io.host.h"
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+struct flash_io_t
+{
+ /** Status of the flash memory. */
+ uint8_t status;
+ /** File to store, read the data. */
+ int file;
+};
+static struct flash_io_t flash;
+
+/** Deactivate the flash memory.
+ */
+static void
+flash_io_deactivate (void)
+{
+ flash.status = 0;
+
+ if (flash.file)
+ close (flash.file);
+}
+
+void
+flash_io_erase (uint32_t start_addr, uint32_t size)
+{
+ if (flash.status && size)
+ {
+ uint8_t data = 0xFF;
+ int res;
+ /* Set the stream to the correct position. */
+ lseek (flash.file, start_addr, SEEK_SET);
+ for (res = 1; (res != -1) && size; size--)
+ res = write (flash.file, &data, sizeof (uint8_t));
+ if ((res < 0) && size)
+ flash_io_deactivate ();
+ }
+}
+
+uint8_t
+flash_io_init (uint32_t flash_size)
+{
+ memset (&flash, 0, sizeof (struct flash_io_t));
+ flash.file = open ("flash.apb", O_CREAT | O_RDWR, S_IREAD |
+ S_IWRITE);
+ if (flash.file > 0)
+ {
+ struct stat fstats;
+ fstat (flash.file, &fstats);
+ if ((uint32_t) fstats.st_size == flash_size)
+ {
+ /* Set the stream to the beginning of the file. */
+ lseek (flash.file, 0, SEEK_SET);
+ flash.status = 1;
+ }
+ else
+ {
+ flash.status = 1;
+ flash_io_erase (flash_size, 0);
+ fstat (flash.file, &fstats);
+ if ((uint32_t) fstats.st_size != flash_size)
+ flash_io_deactivate ();
+ }
+ }
+ else
+ flash_io_deactivate ();
+ return flash.status;
+}
+
+void
+flash_io_write (uint32_t addr, uint8_t data)
+{
+ if (flash.status)
+ {
+ uint8_t res;
+ /* Set the stream to the position of address. */
+ lseek (flash.file, addr, SEEK_SET);
+ res = write (flash.file, &data, sizeof (uint8_t));
+ if (res == 0)
+ flash_io_deactivate ();
+ }
+}
+
+uint8_t
+flash_io_read (uint32_t addr)
+{
+ if (flash.status)
+ {
+ uint8_t res;
+ uint8_t data;
+ /* Set the stream to the position of address. */
+ lseek (flash.file, addr, SEEK_SET);
+ res = read (flash.file, &data, sizeof (uint8_t));
+ if (res == 0)
+ flash_io_deactivate ();
+ return data;
+ }
+ return 0xFF;
+}
+
+void
+flash_io_read_array (uint32_t addr, uint8_t *buffer, uint32_t length)
+{
+ if (flash.status)
+ {
+ uint8_t res;
+ uint8_t deactivate = 1;
+ /* Set the stream to the position of address. */
+ res = lseek (flash.file, addr, SEEK_SET);
+ if (res == addr)
+ {
+ res = read (flash.file, buffer, length);
+ printf ("read: %d\n", res);
+ if (res == length)
+ deactivate = 0x0;
+ }
+ if (deactivate == 0x1)
+ flash_io_deactivate ();
+ }
+}
+
+void
+flash_io_write_array (uint32_t addr, uint8_t *data, uint32_t length)
+{
+ if (flash.status)
+ {
+ uint8_t res;
+ if (sizeof (data) >= length)
+ {
+ /* Set the stream to the position required. */
+ lseek (flash.file, addr, SEEK_SET);
+ res = write (flash.file, data, length);
+ if (res != length)
+ flash_io_deactivate();
+ }
+ else
+ flash_io_deactivate();
+ }
+}
diff --git a/digital/avr/modules/flash/flash_io.host.h b/digital/avr/modules/flash/flash_io.host.h
new file mode 100644
index 00000000..a25b971d
--- /dev/null
+++ b/digital/avr/modules/flash/flash_io.host.h
@@ -0,0 +1,74 @@
+#ifndef flash_io_host_h
+#define flash_io_host_h
+/* flash_io.host.h */
+/* avr.flash - AVR Flash SPI use. {{{
+ *
+ * Copyright (C) 2009 Nelio 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"
+
+/** Erase the memory.
+ * \param start_addr the start address.
+ * \param size the size to erase.
+ */
+void
+flash_io_erase (uint32_t start_addr, uint32_t size);
+
+/** Initialise the flash memory.
+ * \param flash_size the flash size.
+ * \return true if the flash is present, false otherwise.
+ */
+uint8_t
+flash_io_init (uint32_t flash_size);
+
+/** Write in the flash byte provided in parameter.
+ * \param addr the address to write the data.
+ * \param data the buffer to store the data.
+ */
+void
+flash_io_write (uint32_t addr, uint8_t data);
+
+/** Read the data at the address provided.
+ * \param addr the address of the data to read.
+ * \return the data read.
+ */
+uint8_t
+flash_io_read (uint32_t addr);
+
+/** Read a data from the flash memory from the address provided and for a
+ * length of the number of bytes provided.
+ * \param addr at which the data should be read.
+ * \param buffer the buffer to fill with the read data.
+ * \param length the length of the data to read.
+ */
+void
+flash_io_read_array (uint32_t addr, uint8_t *buffer, uint32_t length);
+
+/** Write in the flash byte provided in parameter.
+ * \param addr the address to store the data.
+ * \param data the array to store.
+ * \param length the array length
+ */
+void
+flash_io_write_array (uint32_t addr, uint8_t *data, uint32_t length);
+
+#endif /* flash_io_host_h */