sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Should enable external bus after configuring it

Browse Source
This commit is contained in:
Gregory Nutt 2014-01-23 17:41:29 -06:00
parent 0540e4a9e7
commit 8d33ee6ebf
1 changed files with 39 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
configs/16z/src/z16f_lowinit.c
View File

@ -57,19 +57,45 @@
static void z16f_extcsinit(void)
{
putreg8(0x40, Z16F_EXTCT); /* 8-bit External Bus Interface is enabled (Port E). */
putreg8(0x90, Z16F_EXTCS0H); /* CS0 enabled, Data [0:7] */
putreg8(0x01, Z16F_EXTCS0L); /* Post Read: No wait states; Chip select: 1 wait state */
putreg8(0x90, Z16F_EXTCS1H); /* CS1 enabled, Data [0:7] */
putreg8(0x01, Z16F_EXTCS1L); /* Post Read: No wait states; Chip select: 1 wait state */
putreg8(0x90, Z16F_EXTCS2H); /* CS2 enabled, Data [0:7] */
putreg8(0x11, Z16F_EXTCS2L); /* Post Read: 1 wait state; Chip select: 1 wait state */
putreg8(0x90, Z16F_EXTCS3H); /* CS3 enabled, Data [0:7] */
putreg8(0x15, Z16F_EXTCS3L); /* Post Read: 1 wait state; Chip select: 5 wait states */
putreg8(0x90, Z16F_EXTCS4H); /* CS4 enabled, Data [0:7] */
putreg8(0x15, Z16F_EXTCS4L); /* Post Read: 1 wait state; Chip select: 5 wait states */
putreg8(0x90, Z16F_EXTCS5H); /* CS5 enabled, Data [0:7] */
putreg8(0x15, Z16F_EXTCS5L); /* Post Read: 1 wait state; Chip select: 5 wait states */
/* CS0 enabled, Data [0:7]
* Post Read: No wait states; Chip select: 1 wait state
*/
putreg16(0x9001, Z16F_EXTCS0H);
/* CS1 enabled, Data [0:7]
* Post Read: No wait states; Chip select: 1 wait state
*/
putreg16(0x9001, Z16F_EXTCS1);
/* CS2 enabled, Data [0:7]
* Post Read: 1 wait state; Chip select: 1 wait state
*/
putreg16(0x9011, Z16F_EXTCS2);
/* CS3 enabled, Data [0:7]
* Post Read: 1 wait state; Chip select: 5 wait states
*/
putreg16(0x9015, Z16F_EXTCS3);
/* CS4 enabled, Data [0:7]
* Post Read: 1 wait state; Chip select: 5 wait states
*/
putreg16(0x9015, Z16F_EXTCS4);
/* CS5 enabled, Data [0:7]
* Post Read: 1 wait state; Chip select: 5 wait states
*/
putreg16(0x9015, Z16F_EXTCS5);
/* Enable the 8-bit external bus interface */
putreg8(0x40, Z16F_EXTCT);
}
/***************************************************************************