- remove RTC (or updates in config)
- supress leading zeros in Display (or add to config)
Firmware for BluePill development board.
7x Input
7x Output (including build in LED)
4x ADC
4x PWM
1x RTC
1x 4-digit 7-seg Display
BluePill.Driver- Standalone host with REST APIBluePill.Client.Lib- Library for Node projects
G 3
N V
D 3
| | | |
N/C --o o o o o o-- 3V3
Output1 (build in led) --o o-- GND
N/C --o o-- 5V
N/C --o o-- Input3
ADC1 --o o-- Input4
ADC2 --o o-- Display Latch
ADC3 --o o-- Display Clock
ADC4 --o o-- Display Data
Input7 --o o-- N/C
Output2 --o o-- N/C
PWM1 --o o-- N/C
PWM2 --o o-- Output3
PWM3 --o o-- Output4
PWM4 --o o-- Rx
Input1 --o o-- Tx
Input2 --o o-- Output5
RESET --o o-- Output6
3V3 --o o-- Output7
GND --o o-- Input5
GND --o USB o-- Input6
GND ----- button ----- Input <--- button pressed == value 1
ADC
|
GND ----- potentiometer ----- VCC
GND ----- unused ADC <--- connect unused ADC to GND
uC Tx ----- Host Rx <--- by Host we mean PC or R-Pi
uC Rx ----- Host Tx
Output ----- led ----- GND <--- value 0 == led on
PWM ----- led ----- GND <--- value 0 == led off
19200:8:1:n
Tx pin: A9
Rx pin: A10
0xBB 0xAA {FrameType:8} {DataSize:8} {Data:0+} {Xor:8}
| Type | Value | Data size | Params | Possible response |
|---|---|---|---|---|
| Ping | 0x01 | 0 bytes | none | Pong |
| Get | 0x02 | 1 | addr:8 | Update / Error |
| Get all sensors | 0x03 | 0 | none | UpdateAllSensors / Error |
| Set | 0x04 | 5 | addr:8, value:32 | Update / Error |
| Config read | 0x05 | 0 | none | ConfigUpdate |
| Config write | 0x06 | 2 | pushMode:8, scanInterval:8 | ConfigUpdate |
| Get all | 0x07 | 0 | none | UpdateAll |
0xAB {FrameType:8} {Data:0+} {Xor:8}
| Type | Value | Data size | Data values |
|---|---|---|---|
| Pong | 0x01 | 0 bytes | none |
| Error | 0x02 | 1 | errorCode:8 |
| Update (single IO) | 0x03 | 5 | addr:8, value:32 |
| All sensors update | 0x04 | 12*4 | input1:32, input2:32, ..., rtc:32 |
| Config update | 0x05 | 2 | pushMode:8, pushInterval:8 |
| All IO update | 0x06 | 25*4 | input1:32, ..., displayDot:32 |
| Byte index | Usage | Default value |
|---|---|---|
| 0 | Push mode (0x00 - None, 0x01 - All, 0x02 - Single) | Single |
| 1 | Push interval | 20 ms |
Default push mode is Single with 20ms interval. That means that the only auto updated value you should see after power up is RTC (every 1 second).
| Addr | Type | Pin |
|---|---|---|
| 0x00 | Digital input | B10 |
| 0x01 | Digital input | B11 |
| 0x02 | Digital input | B9 |
| 0x03 | Digital input | B8 |
| 0x04 | Digital input | B13 |
| 0x05 | Digital input | B12 |
| 0x06 | Digital input | A4 |
| 0x07 | ADC | A0 |
| 0x08 | ADC | A1 |
| 0x09 | ADC | A2 |
| 0x0A | ADC | A3 |
| 0x0B | Real time clock | None |
| 0x0C | Digital output | C13 (build in led) |
| 0x0D | Digital output | A5 |
| 0x0E | Digital output | A12 |
| 0x0F | Digital output | A11 |
| 0x10 | Digital output | A8 |
| 0x11 | Digital output | B15 |
| 0x12 | Digital output | B14 |
| 0x13 | PWM | A6 |
| 0x14 | PWM | A7 |
| 0x15 | PWM | B0 |
| 0x16 | PWM | B1 |
| 0x17 | Display value | B5 (data), B6 (clock), B7 (latch) |
| 0x18 | Display dot | N/D |
Vref --o o-- NC
N/D --o o-- GND
N/D --o o-- GND
DIO --o o-- GND
CLK --o| o-- GND
N/D --o| o-- GND
SWO --o o-- GND
RST --o o-- GND
N/D --o o-- GND
5V --o o-- GND
N/D - not used
SWO - not used
G C D 3
N L I V
D K O 3
| | | |
Vbat --o | | | | o-- 3,3V
C13 --o o o o o o-- GND
C14 --o o-- 5V
| Blue |
... Pill ...
| (top view) |
RST --o o-- B15
| |
| J-link | Blue Pill |
|---|---|
| GND | GND |
| CLK | CLK |
| DIO | DIO |
| Vref | 3V3 |
| RST | RST |
STM must be powered from external 5V source.
J-Link 5V out is not working.
Use Visual Studio + VisualGDB
No idea
Set terminal Receiver into HEX mode.
Send $BB$AA$01$00$10.
You should receive AB 01 AA response.
Send $bb$aa$04$05$0c$00$00$00$00$1c to turn LED on. $bb$aa$04$05$0c$01$00$00$00$1d to off.