https://github.com/wissance/qmtechcycloneivboarddemos

A set of additional non-official demo projects for Cyclone4 (EP4CE15F23C8) core boards
https://github.com/wissance/qmtechcycloneivboarddemos

altera-uart cyclone-iv ep4ce15 qmtech qmtech-board verilog-demo-projects

Last synced: 3 months ago
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A set of additional non-official demo projects for Cyclone4 (EP4CE15F23C8) core boards

• Host: GitHub
• URL: https://github.com/wissance/qmtechcycloneivboarddemos
• Owner: Wissance
• License: gpl-3.0
• Created: 2023-06-13T10:00:46.000Z (about 2 years ago)
• Default Branch: master
• Last Pushed: 2024-11-23T19:03:10.000Z (8 months ago)
• Last Synced: 2025-02-09T15:42:51.041Z (5 months ago)
• Topics: altera-uart, cyclone-iv, ep4ce15, qmtech, qmtech-board, verilog-demo-projects
• Language: Verilog
• Homepage: https://wissance.github.io/QmtechCycloneIVBoardDemos/
• Size: 8.42 MB
• Stars: 2
• Watchers: 3
• Forks: 0
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
## QmtechCycloneIVBoardDemos

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## 1. Project description

A set of ***additional*** non-official ***demo projects*** for `QmTech` `Cyclone IV` `Core Board` (`EP4CE15F23C8`).

## 2. Demos

### 2.1 Echo+1 RS232 Demo

For testing `RS232` [`QuickRS232`](https://github.com/Wissance/QuickRS232) module

was designed project `SerialPortEcho`. This project receive bytes from serial port (`COM`) that is configured in following mode - `115200 bit/s, 1 stop bit, even parity, no flow control`. This project do following: `receive byte, add + 1 and send it back`.

![RS232 Timing diagrams](/docs/img/serial_echo_demo.png)

You could use our application [`Zerial`](https://github.com/Wissance/Zerial) to work with `RS232`:

![Application 4 RS232](/docs/img/serial_echo_app_4test.png)

#### 2.1.1 Demo project on board pinout

* `CLK` - global clock - already on the board -> `DIFFCLK_1P` (`T2`)

* `RX` - `RS232` `RX` line - connected to `U8` `20 pin` -> `IO_AB19`

* `TX` - `RS232` `TX` line - connected to `U8` `22 pin` -> `IO_AB20`

* `RTS` - we **don't USE it** in this demo **because simple `TTL` to `RS232` converter**, but anyway we connect it to `U8` `24 pin` -> `IO_Y21`

* `CTS` - we don't USE it in this demo because simple `TTL` to `RS232` converter,

  but anyway we connect it to `U8` `26 pin` -> `IO_W21`

* `RX_LED` - connect it to `D5 LED` -> `DIFFIO_L2P` (`E4`)

* `TX_LED` - don't have on board free `LED`, therefore just out it to pin 30 of `U8` (`IO_U21`)

Additionally RS232-to-TTL converter must be attached to power supply line and ground, that also could be taken from `U8`:

* `3V3` - Any pin from (3, 4)

* `GND` - Any pin from (1, 2, 61, 62)

### 2.2 Cmd Decode+Encode RS232 Demo

Usually we **don't work with separate bytes**, we are **interacting with device by commands**, device is answering on received command, therefore we wrapped bytes in `Command/Answer` via ***frames***.

In this demo Frame have a following **format of a Frame** : 

`SOF | Space | Payload Len | Payload |EOF ` , where:

* `SOF` - start of a frame (2 bytes of `0xFF`)

* `Space` - separator (0 Byte - `0x00`)

* `Payload len` - number of payload bytes

* `Payload` - actual payload, *could be up to 255*, but in demo **restricted to 8**

* `EOF` - end of a frame (2 bytes of `EE`)

In this demo (`SerialPortWithCmdProcessor` folder/project) we are having following 2 commands:

1. *Set 4-byte register* - `0xFF 0xFF 0x00 0x07 0x01 0x02 0x10 0x20 0x30 0x40 0xEE 0xEE` which means `SET` (cmd code `0x01`, 0 byte of payload) **Register** `0x02` (index of registers `0-7`, 1 byte of payload) to value `0x10203040`.

2. *Get 4-byte register* - (cmd code `0x02`), i.e. reading of register of index `0x03` :

`0xFF 0xFF 0x00 0x02 0x02 0x03 0xEE 0xEE`

![Interaction by commands in Zerial](/docs/img/zerial_cmd_commands.png)

#### 2.2.1 Testbenches diagrams demonstrating how it works:

Example of how decoder works, we haven't yet encoder (maybe will be in future)

![Frame parser/decoder](/docs/img/serial_cmd_decoder_example.png)

Example of interacting with device by `Commands/Answers`

![Interaction by commands](/docs/img/cmd_commands_demo.png)

#### 2.2.2 Demo project on board pinout

* `CLK` - global clock - already on the board -> `DIFFCLK_1P` (`T2`)

* `RX` - `RS232` `RX` line - connected to `U8` `20 pin` -> `IO_AB19`

* `TX` - `RS232` `TX` line - connected to `U8` `22 pin` -> `IO_AB20`

* `RTS` - we **don't USE it** in this demo **because simple `TTL` to `RS232` converter**, but anyway we connect it to `U8` `24 pin` -> `IO_Y21`

* `CTS` - we don't USE it in this demo because simple `TTL` to `RS232` converter,

  but anyway we connect it to `U8` `26 pin` -> `IO_W21`

* `RX_LED` - connect it to `D5 LED` -> `DIFFIO_L2P` (`E4`)

* `TX_LED` - don't have on board free `LED`, therefore just out it to pin 30 of `U8` (`IO_U21`)

Additionally RS232-to-TTL converter must be attached to power supply line and ground, that also could be taken from `U8`:

* `3V3` - Any pin from (3, 4)

* `GND` - Any pin from (1, 2, 61, 62)

### 2.3 DRAM Explorer + RS232 Demo

is under development....

Give us a STAR for motivating us to do this (**100 stars min to prioritize this work**)