Electronics > Microcontrollers

ch32v307 Modbus + Web UI firmware

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tellurium:
This thread is dedicated to the CH32V307 firmware that implements Modbus master and Web UI, built with Mongoose Libary (https://github.com/cesanta/mongoose/)

Steps to build & try (on Mac, Windows, Linux):
1. Setup build environment: https://mongoose.ws/documentation/tutorials/tools/ , most notably - symlink support for git & make
2. Install riscv toolchain, e.g. on Mac `brew install riscv-gnu-toolchain`
3. clone mongoose repo: git clone https://github.com/cesanta/mongoose/
4. Go to examples/wch/ch32v307-make-baremetal-builtin, start command prompt/terminal, run "make"
5. Attach serial console to USART1: TX pin A9, baud rate 115200. Use serial converter
6. Observe logs, look at the obtained IP address (see below for logs example)
7. Point your browser at that IP address

Example console output:

412    2 net_builtin.c:197:onstatechang READY, IP: 192.168.2.78
417    2 net_builtin.c:198:onstatechang        GW: 192.168.2.1
41d    2 net_builtin.c:199:onstatechang       MAC: 02:38:9a:a3:39:e3
423    2 main.c:107:main                Initialising application...
429    3 net.c:195:mg_listen            1 0 http://0.0.0.0
42e    2 main.c:110:main                Starting event loop
7dd    2 main.c:35:timer_fn             Ethernet: ready, IP: 192.168.2.78, rx:4, tx:3, dr:0, er:0
bc5    2 main.c:35:timer_fn             Ethernet: ready, IP: 192.168.2.78, rx:5, tx:3, dr:0, er:0
fad    2 main.c:35:timer_fn             Ethernet: ready, IP: 192.168.2.78, rx:5, tx:3, dr:0, er:0

Current firmware size: ~90k on flash.
Screenshot attached.

Note: this firmware can be also run on a Windows/Linux/Mac workstation: cd examples/modbus-dashboard && make

The MQTT functionality is not yet working.
Saving configuration persistently on a flash is not yet working either.

Feedback is welcome, please let me know what features you'd like to see.

ali_asadzadeh:
thanks tellurium for sharing,
But I can not compile the code on win11, I will get these errors


--- Quote ---riscv-none-elf-gcc main.c mongoose.c vendor/system_ch32v30x.c vendor/startup_ch32v30x_D8C.S -W -Wall -Wextra -Wno-error -Wundef -Wshadow -Wdouble-promotion -Wformat-truncation -fno-common -Wconversion -Wno-sign-conversion -ffunction-sections -fdata-sections  -march=rv32imafc -mabi=ilp32f  -DSYSCLK_FREQ_144MHz_HSE -I. -Ivendor -g3 -Os  -T vendor/link.ld -nostartfiles --specs=nano.specs  -lc -lgcc -Wl,--gc-sections  -o firmware.elf
Cannot create temporary file in C:\Windows\: Permission denied
make: *** [Makefile:25: firmware.elf] Error 127
--- End quote ---

bingo600:

--- Quote from: ali_asadzadeh on November 28, 2023, 09:26:37 am ---thanks tellurium for sharing,
But I can not compile the code on win11, I will get these errors


--- Quote ---riscv-none-elf-gcc main.c mongoose.c vendor/system_ch32v30x.c vendor/startup_ch32v30x_D8C.S -W -Wall -Wextra -Wno-error -Wundef -Wshadow -Wdouble-promotion -Wformat-truncation -fno-common -Wconversion -Wno-sign-conversion -ffunction-sections -fdata-sections  -march=rv32imafc -mabi=ilp32f  -DSYSCLK_FREQ_144MHz_HSE -I. -Ivendor -g3 -Os  -T vendor/link.ld -nostartfiles --specs=nano.specs  -lc -lgcc -Wl,--gc-sections  -o firmware.elf
Cannot create temporary file in C:\Windows\: Permission denied
make: *** [Makefile:25: firmware.elf] Error 127
--- End quote ---

--- End quote ---

Didn't the answer in the other thread solve it ?
https://www.eevblog.com/forum/microcontrollers/ch32v307-risc-v-minicore-with-ethernet/msg5190546/#msg5190546

tellurium:

--- Quote from: ali_asadzadeh on November 28, 2023, 09:26:37 am ---thanks tellurium for sharing,
But I can not compile the code on win11, I will get these errors

--- End quote ---

Yeah, as bingo600 mentioned, try a suggested fix: create a directory c:\temp and set a system-wide environment variable TMP=c:\temp

I am attaching .bin and .elf files of the latest firmware to the first post.

ali_asadzadeh:
I have done it, Still no luck :'(



--- Quote --- make
riscv-none-elf-gcc main.c mongoose.c vendor/system_ch32v30x.c vendor/startup_ch32v30x_D8C.S -W -Wall -Wextra -Wno-error -Wundef -Wshadow -Wdouble-promotion -Wformat-truncation -fno-common -Wconversion -Wno-sign-conversion -ffunction-sections -fdata-sections  -march=rv32imafc -mabi=ilp32f  -DSYSCLK_FREQ_144MHz_HSE -I. -Ivendor -g3 -Os  -T vendor/link.ld -nostartfiles --specs=nano.specs  -lc -lgcc -Wl,--gc-sections  -o firmware.elf
Cannot create temporary file in C:\Windows\: Permission denied
make: *** [Makefile:25: firmware.elf] Error 127


--- End quote ---

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