diff options
Diffstat (limited to 'nuttx/arch/arm/src/lpc17xx/lpc17_ohciram.h')
| -rwxr-xr-x | nuttx/arch/arm/src/lpc17xx/lpc17_ohciram.h | 37 |
1 files changed, 18 insertions, 19 deletions
diff --git a/nuttx/arch/arm/src/lpc17xx/lpc17_ohciram.h b/nuttx/arch/arm/src/lpc17xx/lpc17_ohciram.h index 5607e35d6..eb159785d 100755 --- a/nuttx/arch/arm/src/lpc17xx/lpc17_ohciram.h +++ b/nuttx/arch/arm/src/lpc17xx/lpc17_ohciram.h @@ -132,11 +132,11 @@ /* Configurable number of descriptor buffer (TDBUFFER) */
#ifndef CONFIG_USBHOST_TDBUFFERS
-# define CONFIG_USBHOST_TDBUFFERS 1
+# define CONFIG_USBHOST_TDBUFFERS 2
#endif
-#if CONFIG_USBHOST_TDBUFFERS < 1
-# error "At least one TD buffer is required"
+#if CONFIG_USBHOST_TDBUFFERS < 2
+# error "At least two TD buffers are required"
#endif
/* Configurable size of a TD buffer */
@@ -170,36 +170,35 @@ * LPC17_BANK1_SIZE 16384
*
* Configuration:
- * CONFIG_USBHOST_OHCIRAM_SIZE 1024
- * CONFIG_USBHOST_NTDS 1
+ * CONFIG_USBHOST_OHCIRAM_SIZE 1280
+ * CONFIG_USBHOST_NTDS 2
* CONFIG_USBHOST_NEDS 2
* CONFIG_USBHOST_TDBUFFERS 1
* CONFIG_USBHOST_TDBUFSIZE 128
* CONFIG_USBHOST_IOBUFSIZE 512
*
* Sizes of things
- * CONFIG_USBHOST_NEDS 2
* LPC17_EDFREE_SIZE 48
- * LPC17_TDFREE_SIZE 128
+ * LPC17_TDFREE_SIZE 256
* LPC17_IOFREE_SIZE 512
*
* Memory Layout
* LPC17_OHCIRAM_END (0x20008000 + 16384) = 0x2000c000
- * LPC17_OHCIRAM_BASE (0x2000c000 - 1024) = 0x2000bc00
- * LPC17_OHCIRAM_SIZE 1024
+ * LPC17_OHCIRAM_BASE (0x2000c000 - 1280) = 0x2000bb00
+ * LPC17_OHCIRAM_SIZE 1280
* LPC17_BANK1_HEAPBASE 0x20008000
- * LPC17_BANK1_HEAPSIZE (16384 - 1024) = 15360
+ * LPC17_BANK1_HEAPSIZE (16384 - 1280) = 15104
*
- * LPC17_HCCA_BASE 0x2000bc00
- * LPC17_TDHEAD_ADDR 0x2000bd00
- * LPC17_TDTAIL_ADDR 0x2000bd10
- * LPC17_EDCTRL_ADDR 0x2000bd20
- * LPC17_EDFREE_BASE 0x2000bd30
- * LPC17_TDFREE_BASE 0x2000bd50
- * LPC17_IOFREE_BASE 0x2000bdd0
- * LPC17_IOBUFFERS (0x2000c000 + 0x2000bdd0) / 512 = 560/512 = 1
+ * LPC17_HCCA_BASE 0x2000bb00
+ * LPC17_TDHEAD_ADDR 0x2000bc00
+ * LPC17_TDTAIL_ADDR 0x2000bc10
+ * LPC17_EDCTRL_ADDR 0x2000bc20
+ * LPC17_EDFREE_BASE 0x2000bc30
+ * LPC17_TDFREE_BASE 0x2000bc50
+ * LPC17_IOFREE_BASE 0x2000bd50
+ * LPC17_IOBUFFERS (0x2000c000 - 0x2000bd50) / 512 = 688/512 = 1
*
- * Wasted memory: 560-512 = 48 bytes
+ * Wasted memory: 688-512 = 176 bytes
*/
#define LPC17_HCCA_BASE (LPC17_OHCIRAM_BASE)
|