Skip to main content

STM8S005C6T6 Ethernet development board

In this project, we built an STM8S005C6T6 based Ethernet development board for our IoT experiments. This development board consists of ENC28J60, 10BASE-T stand-alone Ethernet controller, CH340G, USB serial interface, 2 LED indicators, and passive buzzer unit.

The firmware framework for this development board has been developed using SDCC. To enable IPv4 support, we convert the EtherCard driver, which is available for the Arduino platform. The current version of this driver supports all other EtherCard functions except TCP support.

Finished STM8S005C6T6 IoT development board.

In the given design, the SPI terminals of the MCU are connected to the ENC28J60 Ethernet controller. All SPI terminals, such as MISO / PC7, MOSI / PC6, and SCK / PC5, are connected directly to the Ethernet controller. In addition, the PC4 terminal of the MCU is used as ENC28J60, CHIP-SELECT. 

The CH340G USB serial interface is connected to the UART2 terminals of the MCU. In STM8S005C6T6, the UART2 is mapped to the PD6 and PD5 terminals of the MCU. The USB interface of this development board consists of the jack-sense feature. The jack-sense status can access from PD7.

The minor peripherals such as LED indicators and buzzer are connected to the PORTD of the MCU. The LED indicators are connected to terminals PD0 and PD1 and can be activated or deactivated via jumpers. The passive buzzer is connected to PD4 and can run through the STM8 beep sound generator unit.

All peripherals of this development board are powered by a 3.3V supply. The recommended supply voltage for this development board is  5V to 9V.

Bottom view of the STM8S005C6T6 IoT development board.

In addition to the STM8S005C6T6, this development board supports the following STM8 series, LQFP48 packaged microcontrollers: STM8S007C8T6, STM8S207C8T6, and STM8S105C6T6.

All the resources of this development board are available at the GitHub project repository. The supplied firmware is developed and tested with SDCC version 3.8 on a Linux environment. Before compiling and flashing the MCU, make sure to install the stm8flash application on the system. The supplied makefile use this application to program the fuses and flash memory of the MCU.

The schematic and PCB design of this project is released under the terms of CERN-OHL-W Version 2.0. The firmware framework is released under the terms of the GNU GPL 2.0 license.

Labels:

Comments

Post a Comment

Popular posts from this blog

Building the TD4 4-Bit CPU

The TD4 is a famous 4-bit CPU featured in the book How to Build a CPU by Kaoru Tonami . The book focuses on constructing a functional processor entirely from basic 74-series TTL logic ICs. While the book is unfortunately only available in Japanese, a friend from Japan sent me a copy along with a TD4 PCB. I believe the PCB is based on the open-source design files available on BG5DIW's GitHub repository . "How to Build CPU" book and the PCB. Recently, I finally found the time to build and experiment with it. The project took a few months, as I had to translate the book myself to grasp the core concepts. The overall design is simple and elegant, offering a set of 12 instructions and a 16-byte ROM (implemented via DIP switches) for programming. The board operates on 5V and can be powered via USB. Most components were sourced from local shops, though I had to order a few 74HC-series ICs online. Later, I tested the circuit by replacing some 74HC components with 74LS series...
Post a Comment
Read more

CD2003 - yet another simple FM radio receiver

In the last few days, we are looking for some simple FM radio receiver to integrate into one of our ongoing projects. For that, we try several FM radio receiver ICs including TDA7000, CD2003/TA2003/TA8164, CXA1019, and KA22429. Out of all those chips we select CD2003 (or TA2003/TA8164) based receiver for our project because of its simplicity and outstanding performance. Except to CD2003, Sony CXA1019 also perform well but we drop it because of its higher component count. We design our receiver based on Toshiba TA2003 datasheet and later we try TA8164 and CD2003 with the same circuit. Either CD2003 or TA8164 can directly replace TA2003 IC, and as per our observations, TA8164 gives excellent results out of those 3 chips. A prototype version of CD2003 FM radio receiver The PCB design and schematic which we used in our prototype project are available to download at google drive (including pin-outs of crystal filters and inductors ). Except for CD2003 IC, this receiver consist...
3 comments
Read more

Arduino superheterodyne receiver

In this project, we extend the shortwave superheterodyne receiver we developed a few years ago . Like the previous design, this receiver operates on the traditional superheterodyne principle.  In this upgrade, we enhanced the local oscillator with Si5351 clock generator module and Arduino control circuit. Compared to the old design, this new receiver uses an improved version of an intermediate frequency amplifier with 3 I.F transformers. In this new design, we divide this receiver into several blocks, which include, mixer with a detector, a local oscillator, and an I.F amplifier. The I.F amplifier builds into one PCB. The filter stage, mixer, and detector stages place in another PCB. Prototype version of 455kHz I.F amplifier. In this prototype build, the Si5351 clock generator drives using an Arduino Uno board. With the given sketch, the user can tune and switch the shortwave meter bands using a rotary encoder. The supplied sketch support clock generation from 5205kHz (tuner f...
Post a Comment
Read more