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ctboard:peripherals:gpio [2016/02/11 07:11] – feurctboard:peripherals:gpio [2017/08/29 09:19] (current) – [GPIO] ruan
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 ====== GPIO ====== ====== 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 output pins
     * 32 memory mapped input 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 [[memory_bus|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_pinout.svg?300em}}  +
-   {{ctboard_gpio_input_reg.svg}} \\ \\ +
- +
-=== Output === +
- +
-The Registers are read / write. +
- +
-\\ {{ctboard_gpio_output_reg.svg}} \\ \\ +
- +
-==== Diagram ==== +
- +
-\\ {{ctboard_gpio_cpld.svg}} \\ \\ +
- +
-===== 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}} \\ \\+
  
  
  
  • ctboard/peripherals/gpio.1455174705.txt.gz
  • Last modified: 2016/02/11 07:11
  • by feur