scanning the I2C_1 port

The pinetime does not have a serial port.
I do not have a segger debugging probe.
A way around this, it to put a value in memory at a fixed location.
With openocd you can peek at this memory location.

Building and Running

In this repo under samples you will find an adapted i2c scanner program.

west build -p -b pinetime samples/drivers/i2c_scanner

Note

#define MY_REGISTER (*(volatile uint8_t*)0x2000F000)

in the program you can set values: MY_REGISTER=1; MY_REGISTER=8;

this way you know till where the code executes

#telnet 127.0.0.1 4444

Peeking

once your telnet sessions started:
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
Open On-Chip Debugger
>mdw 0x2000F000 0x1
0x2000f000: 00c24418

Note::

this corresponds to 0x18, 0x44 and 0xC2 (which is endvalue of scanner, so it does not detect touchscreen, which should be touched first….)