Changes between Version 5 and Version 6 of HardwareUsersGuides/FPGABoard_v2.2/UserIO/warp_v4_userio

Timestamp:

Oct 18, 2009, 10:30:51 PM (15 years ago)

Author:

sgupta

Comment:

--

HardwareUsersGuides/FPGABoard_v2.2/UserIO/warp_v4_userio

@@ -1 @@
-== Custom User I/O Control Core ==
+= Custom User I/O Control Core =
 
 A custom core for user I/O control is available in the [source:/PlatformSupport/CustomPeripherals/pcores/warp_v4_userio_v1_00_a repository] and during the [//svn/WARP/Documentation/Tutorials/XPS_Intro/html/XPS_Intro.html base system builder] process. The core allows the user to control the LEDs, read the push buttons and DIP switches and output patterns to the 7-segment displays. The core also implements the mapping of 4-bit hexadecimal characters to 7-bit patterns used to drive the 7-segment displays. This mapping is enabled per display at runtime by user designs.
 
-=== Register Bank ===
+== Register Bank ==
 
 The core has 5 registers that enable the I/O functionality. Register 0 and 1 are the output and input registers for the dedicated I/O, namely the LEDs, the push buttons and the DIP switch.
@@ -10 +10 @@
 
 
-=== Functions ===
+== Functions ==
 
 As we know, there are four peripherals controlled by the UserIO controller.
@@ -41 +41 @@
 
 where ''baseaddress'' is the base address of the UserIO core. The returned value is four bits wide.
+
+'''Hex Displays:'''
+
+There are two primary methods to control the hex displays: raw mode and number mode. The number mode allows the user to write the number desired to a register which is then appropriately converted to appear on the hex display. In raw mode, the user controls each bit individually. The three displays can be configured separately.
+
+To configure the hex display for number mode choose one of the following functions:
+
+{{{
+WarpV4_UserIO_NumberMode_All(baseaddress)
+WarpV4_UserIO_NumberMode_LeftHex(baseaddress)
+WarpV4_UserIO_NumberMode_MiddleHex(baseaddress)
+WarpV4_UserIO_NumberMode_RightHex(baseaddress)
+}}}