Differences

This shows you the differences between two versions of the page.

--- ctboard:peripherals:gpio [2016/02/11 06:45] – feur
+++ ctboard:peripherals:gpio [2017/08/29 09:19] (current) – [GPIO] ruan
@@ Line 1: / Line 1: @@
-FIXME
 ====== GPIO ======
-The CT Board offers on the 4 general purpouse ports the following functions:
+The CT Board offers on the 4 general purpose ports the following functions:
-  * 4 general purpouse I/O ports
+  * 4 general purpose I/O ports
     * 32 memory mapped output pins
     * 32 memory mapped input pins
-  * 2 general purpouse I/O ports, directly connected to MCUs [[stm32:peripherals:gpio|Port A and B]]
+  * 2 general purpose I/O ports, directly connected to MCUs [[stm32:peripherals:gpio|Port A and B]]
-  * External interface to SRAM bus.
+  * External interface to [[memory_bus|SRAM bus]].
+\\
-===== GPIO over CPLD =====
+===== Functions =====
-Each of the 4 GPIO ports contains 8 ouput and 8 input pins. The ports are not as fast as the integrated [[stm32:peripherals:gpio|GPIO ports]] of the microcontroller. \\ \\
+These modes are available:
-> {{ctboard_mode_1.svg?48px }} Please make sure the CT Board is in the correct mode.
+  * [[gpio_cpld|GPIO over CPLD]] for input / output on ports P1..4.
-> Supported [[mode_switch|mode]]: **1**
+  * [[gpio_mcu|GPIO over MCU]] for input / output on ports P5 / P6.
-==== Registers ====
-=== Input ===
-\\ {{ctboard_gpio_input_reg.svg}} \\ \\
-=== Output ===
-The Registers are read / write.
-\\ {{ctboard_gpio_output_reg.svg}} \\ \\
-==== Diagram ====
-\\ {{ctboard_gpio_cpld.svg}} \\ \\
-\\ {{ ctboard_gpio_pinout.svg?400em }} \\ \\
-===== GPIO over MCU =====
-These two ports are directly connected to the [[stm32:peripherals:gpio|GPIO ports A and B]] on the microcontroller. \\
-All [[stm32:peripherals:gpio#alternate_functions|functions]] of theese GPIO ports are available. \\ \\
-> {{ctboard_mode_no.svg?48px }} This functionality is independent of the CT Board mode.
-> Supported modes: Available in all modes.
-==== Diagram ====
-> Only pins 0..11 are connected to P5 / P6! The other 4 pins are used for 5V, 3.3V and GND.
-\\ {{ctboard_gpio_stm32.svg}} \\ \\
-===== External Memory Bus =====
-The CT Board is connected to the microcontroller over SRAM interface. This interface is also available on ports P1..4. \\ \\
-==== Full Bus ====
-The full interface is connected. \\ \\
-> {{ctboard_mode_2.svg?48px }} This functionality is independent of the CT Board mode.
-> Supported modes: **2**.
-=== Pin Out ===
-\\ {{ctboard_gpio_stm32_reg.svg}} \\ \\
-==== Visualization on Oscilloskope ====
-For educational purpouse there is a mode to visualize the bus on a oscilloskope. \\
-The ports are specially configured to directly plug in the logic probe of a Tektronix logic analyzer. \\ \\
-> {{ctboard_mode_3.svg?48px }} This functionality is independent of the CT Board mode.
-> Supported modes: **3**.
-\\ {{ ctboard_gpio_probe.svg?400em }} \\ \\
-=== Pin Out ===
-\\ {{ctboard_gpio_probe_reg.svg}} \\ \\