Fix markdown format with autoformatter (#1284)

This commit is contained in:
Riku Isokoski
2022-08-21 14:50:09 +03:00
committed by GitHub
parent c495db8a71
commit c2b6a8de3e
30 changed files with 524 additions and 413 deletions

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@@ -1,4 +1,5 @@
# OpenOCD and STLink
OpenOCD (**Open O**n **C**hip **D**ebugger) is an open source tool that interfaces with many SWD/JTAG debugger to provide debugging and *in-system* programming for embedded target devices.
OpenOCD supports the **NRF52** (the CPU of the PineTime) and the **STLinkV2**, a cheap SWD debugger.
@@ -6,9 +7,10 @@ OpenOCD supports the **NRF52** (the CPU of the PineTime) and the **STLinkV2**, a
OpenOCD works on X86 computers, ARM/ARM64 computers, and SBCs (like the RaspberryPi and Pine64 Pinebook Pro)!
## Installation
We will build OpenOCD from sources, as packages from Linux distributions are most of the time outdated and do not support the NRF52 properly.
- Fetch the sources from GIT, and build and install it:
- Fetch the sources from GIT, and build and install it:
```
git clone https://git.code.sf.net/p/openocd/code openocd-code
@@ -21,13 +23,14 @@ make -j 4
sudo make install
```
- Configure UDEV to allow OpenOCD to open the interface to your STLinkV2:
- Configure UDEV to allow OpenOCD to open the interface to your STLinkV2:
```
sudo cp contrib/60-openocd.rules /etc/udev/rules.d/
sudo udevadm control --reload-rules
```
- You can now plug your STLinkV2 into a USB port and run OpenOCD to see if it's working correctly:
- You can now plug your STLinkV2 into a USB port and run OpenOCD to see if it's working correctly:
```
$ openocd -f interface/stlink.cfg -f target/nrf52.cfg
@@ -50,11 +53,14 @@ Info : STLINK V2J34S7 (API v2) VID:PID 0483:3748
Info : Target voltage: 3.294340
Error: init mode failed (unable to connect to the target)
```
Ok, OpenOCD is running and it detects my STLinkV2. The last error shows that I've not connected the STLinkV2 to the PineTime.
## Configuration files
OpenOCD is configured using configuration files.
First, we need a common configuration file for the project : **openocd-stlink.ocd**:
```
source [find interface/stlink.cfg]
@@ -63,11 +69,13 @@ gdb_breakpoint_override hard
source [find target/nrf52.cfg]
```
This file specifies to OpenOCD which debugger and target it will be connected to.
Then, we use various *user files* to use OpenOCD to flash InfiniTime binary files.
This files flashes the bootloader and the application firmware : **flash_bootloader_app.ocd**:
```
init
@@ -78,6 +86,7 @@ reset
```
And this one flashes the graphics flasher (it writes the bootloader graphics into the SPI NOR flash memory) : **flash_graphics.ocd**:
```
init
@@ -87,17 +96,21 @@ reset
```
## Examples
### Flash bootloader and application
```
openocd -f ./openocd-stlink.ocd -f ./flash_bootloader_app.ocd
```
### Flash graphics flasher
```
openocd -f ./openocd-stlink.ocd -f ./flash_graphics.ocd
```
## Connect the STLinkV2 to the PineTime
Here is an example using the pogo pins:
![SWD pinout](openOCD/swd_pinout.jpg)
![Pogo pins](openOCD/pogopins.jpg)