STM8S207 / 103 board "Clock LEDs"

On AliExpress i also ordered the  EU-STM8S207|103-DEMO board.

This board has two STM8 controllers and several hardware items.
According to info the two STM8 controlers should be able to communicate with each other.
There is a MicroSD card holder, a W2064 Flash ram, A buzzer (Beep), LDR, One reset button. Two buttons connected to the 207 and one button connected to the 103 (on which pin??), Several connectors (e.g. for ESP01 wifi),GSM. SPI, I2C AD/DA, GDM, 207-UART1 a 207-SWIM and 103-SWIM and some other items. Also additional boards to add more hardware can be ordered.

Unfortunately i could not yet find good documentation or a schematic diagram.

After playing with a cheap STM8S103F3P6 board i decided to try out this board and connected my ST-link (shown in an earlier post) to the 103-SWIM connector. On this board the SWIM connector indicates 5V so i used 5V.  ( The STM8S103F3P6 board indicates 3V3 so there i used 3V3).

I modified the STM8S Blink sketch to the sketch below to test the output pins.

// CODE

const int LED_TT = 12;

/
 pinMode(LED_TT, OUTPUT);
}

// the loop function runs over and over again forever

void loop() {

  digitalWrite(LED_TT, HIGH);   // turn the LED on (HIGH is the voltage level)

  delay(1000);                       // wait for a second

  digitalWrite(LED_TT, LOW);    // turn the LED off by making the voltage LOW

  delay(1000);                       // wait for a second

}

// END CODE

LED_TT is Led To Test
By changing the LED_TT value in the program above i could test the "Clock like arranged Leds".

Results are in the table below.

Clockwise 1-12 LEDs on PCB	Pin in Script
1	0
2	1
3	2
4	4
5	3
6	5
7	6
8	7
8	8
10	9
11	11
12	12

Strange that the 4 and 3 are swapped. I expect Pin 10 (D10) is not used as this corresponds to SWIM in some pictures i found.

 
 

STM8S103F3P6 -01- Blink test

Some cheap STM8S103F3P6 Breakout Boards recently came in my mailbox from China / AliExpress and i decided that it was time to test them.

This is my first experience STM boards so i did the simple Bink test.

First i heated up my soldering iron to added some Dupont pins to 2 of this boards. At the bottom of this blogpost you see more pictures of the soldered pins  

For programming a SWIM interface /  ST Link is needed. Luckily some weeks earlier a simple ST Link arrived. This was a simple PCB with an USB port and the following connections

To protect the PCB i heat-shrinked this ST Link connector.

Bottom  [SWD]	Top [SWIM]
3V3	RST
SWD0	GND
SWCLK	SWIM
GND	5V

With Dupont wires I made the following hardware connections between the programmer and the STM8S103F3P6 Breakout Board 

STM8S103F3P6	Programmer
3V3	3V3
SWIM	SWIM
GND	GND
NRST	RST

After configuring the Arduino IDE so that it can handle STM8  i successfully tested the board with the Blink program from the Arduino IDE (1.8.10) with the settings below.

Tools  Board:  STM8S103F3 Breakout Board  Programmer: ST-Link/V2 File   Examples       Examples for STM8S103F3 Breakout Board           Generic_Examples                   01 Basics                               Blink                 Some links: https://tenbaht.github.io/sduino/hardware/stm8blue/ https://www.youtube.com/watch?v=8CfD1d4Z_Vk

STM8S103F3P6 Breakout Board with Dupont pins

On one breakout board i used male ( and male pins with an angle) Dupont pins as often seen with this modules.
For the other STM8S103F3P6 breakout board i used the long Dupont pins with male and female connectors. For the SWIM interface  used male Dupont pins. I also added connectors to the + and - . The idea is that it can be easy placed in a project and the female headers still give easy access to all pins.
It is possible to use both variants on a breadboard.