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README: cleanup build and flashing instructions

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Sebastien Bourdeauducq 2020-12-09 10:16:40 +08:00
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README.md
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# Firmware for the Sinara 8451 Thermostat
- [x] [Continuous Integration](https://nixbld.m-labs.hk/job/stm32/stm32/thermostat)
- [x] [Download latest firmware build](https://nixbld.m-labs.hk/job/stm32/stm32/thermostat/latest/download-by-type/file/binary-dist)
- [x] Download latest firmware build: [ELF](https://nixbld.m-labs.hk/job/stm32/stm32/thermostat/latest/download/1) [BIN](https://nixbld.m-labs.hk/job/stm32/stm32/thermostat/latest/download/2)
## Building
### Reproducible build with Nix
See the `stm32` folder of the [nix-scripts repository](https://git.m-labs.hk/M-Labs/nix-scripts).
### Debian-based systems (tested on Ubuntu 19.10)
- install git, clone this repository
@ -37,21 +41,19 @@ gdb target/thumbv7em-none-eabihf/release/thermostat
```
## Flashing
There are several options for performing device firmware upgrade (DFU) on Thermostat. The firmware is an .ELF file.
There are several options for flashing Thermostat. DFU requires only a micro-USB connector, whereas OpenOCD needs a JTAG/SWD adapter.
### dfu-util
This can be done from Linux machine using only micro-USB connector.
([Issue #10](https://git.m-labs.hk/M-Labs/thermostat/issues/10))
### dfu-util on Linux
* Install the DFU USB tool (dfu-util).
* Convert firmware from ELF to BIN: ```arm-none-eabi-objcopy -O binary thermostat.elf thermostat.bin```
* Convert firmware from ELF to BIN: `arm-none-eabi-objcopy -O binary thermostat.elf thermostat.bin` (you can skip this step if using the BIN from Hydra)
* Connect to the Micro USB connector to Thermostat below the RJ45.
* Add jumper to Thermostat v2.0 across 2-pin jumper adjacent to JTAG connector.
* Cycle board power to put it in DFU update mode
* Push firmware to flash: ```dfu-util -a 0 -s 0x08000000:leave -D thermostat.bin```
* Push firmware to flash: `dfu-util -a 0 -s 0x08000000:leave -D thermostat.bin`
* Remove jumper
* Cycle power to leave DFU update mode
### st.com DfuSe tool
### st.com DfuSe tool on Windows
On a Windows machine install [st.com](https://st.com) DfuSe USB device firmware upgrade (DFU) software. [link](https://www.st.com/en/development-tools/stsw-stm32080.html).
- add jumper to Thermostat v2.0 across 2-pin jumper adjacent to JTAG connector
- cycle board power to put it in DFU update mode
@ -60,7 +62,7 @@ On a Windows machine install [st.com](https://st.com) DfuSe USB device firmware
- remove jumper
- cycle power to leave DFU update mode
### openocd
### OpenOCD
```shell
openocd -f interface/stlink-v2-1.cfg -f target/stm32f4x.cfg -c "program target/thumbv7em-none-eabihf/release/thermostat verify reset;exit"
```