boards/stm32f4discovery: use default port to access stdio via cdc acm #19376
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gschorcht
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Mar 10, 2023
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19371: sys/usbus: check for the number of required and provided EPs in static configurations r=benpicco a=gschorcht ### Contribution description This PR provides a static check at compile time whether the number of EPs required in a static configuration does not exceed the number of EPs provided by the USB device. #### Background In issue #19359 the problem was reported that `usbus_cdc_ecm` didn't work together with `stdio_cdc_acm` on some STM32 boards. The reason for some of the boards was simply that the application tried to allocate more EPs than available and simply ignored this and just didn't work. #### Solution Since `auto_init_usb` uses a static configuration with exactly one USBUS stack instance and one USB device, at least in case `auto_init` is used a static check can be carried out to make sure that the number of EPs required by the application doesn't exceed the number of EPs provided by the USB device. For this purpose, each `usbus_*` module defines the number of IN and OUT EPs required by that module. Each USB device driver defines the number of EPs provided by USB device if it differs from the default of 8 EPs. During the auto initialization the total number of required IN and OUT EPs is then compared with the number of EPs provided by the USB device using a static assert. ### Testing procedure 1. Green CI 2. Compilation of ```python USEMODULE='stdio_cdc_acm' BOARD=nucleo-f439zi make -j8 -C tests/usbus_cdc_ecm ``` should lead to compilation error ```python sys/auto_init/usb/auto_init_usb.c:81:1: error: static assertion failed: "Number of required IN endpoints exceeded" _Static_assert(USBUS_EP_IN_REQUIRED_NUMOF <= USBDEV_NUM_ENDPOINTS, ^~~~~~~~~~~~~~ Makefile.base:146: recipe for target 'tests/usbus_cdc_ecm/bin/nucleo-f439zi/auto_init_usbus/auto_init_usb.o' failed ``` while compilation of ``` USEMODULE='stdio_cdc_acm' BOARD=nucleo-f767zi make -j8 -C tests/usbus_cdc_ecm ``` should work. ### Issues/PRs references Fixes issue #19359 partially. 19374: makefiles/boards/stm32: fix DFU_USB_ID handling r=benpicco a=gschorcht ### Contribution description This PR fixes the still existing problem that an application can't be flashed to a STM32 board if it uses `riotboot_dfu` with default VID/PID (1209:7d02). In PR #18964 item 1, the problem was already described that an application can't be flashed on a board that is using `riotboot_dfu`. Using for example ```python FEATURES_REQUIRED+=riotboot USEMODULE+=usbus_dfu make -C examples/saul BOARD=nucleo-f767zi \ PROGRAMMER=dfu-util all riotboot/flash-slot0 ``` always leads to error ```python /home/gs/src/RIOT-Xtensa-ESP.esp-idf-4.4/makefiles/boards/stm32.inc.mk:28: *** DFU_USB_ID is not set. Stop. /home/gs/src/RIOT-Xtensa-ESP.esp-idf-4.4/makefiles/boot/riotboot.mk:87: recipe for target 'riotboot/bootloader/binfile' failed ``` even if `DFU_USB_ID` variable is set as described in documentation. ```python FEATURES_REQUIRED+=riotboot USEMODULE+=usbus_dfu make -C examples/saul BOARD=nucleo-f767zi \ PROGRAMMER=dfu-util DFU_USB_ID=1209:7d02 all riotboot/flash-slot0 ``` The reason is that the variable `DFU_USB_ID` isn't exported and the check https://github.com/RIOT-OS/RIOT/blob/8dc8bf35678493ecc8ef110e2f0359a67c03894c/makefiles/boards/stm32.inc.mk#L27-L29 sees an empty `DFU_USB_ID` variable here. It prevents to use `dfu-util` event though the following `dfu-util.mk` will generate a default value for this variable from the `USB_VID` and `USB_PID` variables if necessary. Commit 6a76b94 of PR #18964 tried to fix this problem but wasn't merged for any reason. To fix this problem, the check is completely removed. If a board such as `weact-f4x1cx` uses a DFU boorloader and requires a certain VID/PID combination, board's makefile is responsible to set `DFU_USB_ID` variable. ### Testing procedure It is not necessary to use a real boad, checking the compilation process is sufficient. 1. Using default VID/PID as described in documentation: ```python FEATURES_REQUIRED+=riotboot USEMODULE+=usbus_dfu make -C examples/saul BOARD=nucleo-f767zi \ PROGRAMMER=dfu-util all riotboot/flash-slot0 ``` can't be compiled without this PR but calls `dfu-util` correctly with this PR using the default VID/PID: ```python dfu-util --device 1209:7d02 --alt 0 --download examples/saul/bin/nucleo-f767zi/riotboot_files/slot0.1678440536.bin ``` 2. Using a VID/PID as described in documentation: ```python FEATURES_REQUIRED+=riotboot USEMODULE+=usbus_dfu make -C examples/saul BOARD=nucleo-f767zi \ DFU_USB_ID=1209:affe PROGRAMMER=dfu-util all riotboot/flash-slot0 ``` can't be compiled without this PR but calls `dfu-util` correctly with this PR using the default VID/PID: ```python dfu-util --device 1209:affe --alt 0 --download examples/saul/bin/nucleo-f767zi/riotboot_files/slot0.1678440536.bin ``` 3. Compiling a board with DFU bootloader ```python make -C examples/saul flash BOARD=weact-f411ce ``` should still call dfu-util with correct VID/PID: ```python dfu-util --device 0483:df11 --alt 0 --download /home/gs/src/RIOT-Xtensa-ESP.esp-idf-4.4/examples/saul/bin/weact-f411ce/saul_example.bin --dfuse-address 0x8000000:leave ``` ### Issues/PRs references 19375: tools/renode: add support for target reset r=benpicco a=aabadie 19376: boards/stm32f4discovery: use default port to access stdio via cdc acm r=benpicco a=aabadie 19377: pkg/tinyusb: fix default VID/PID configuration r=benpicco a=gschorcht ### Contribution description This PR fixes the default VID/PID configuration if tinyUSB board reset feature is used. While reviewing PR #19086 I was wondering why `esp32s2-wemos-mini` requires to set `USB_VID`/`USB_PID` explicitly to `USB_VID_TESTING`/`USB_PID_TESTING`. The reason was that tinyUSB board reset feature wasn't declared as RIOT internal. ### Testing procedure Flashing `esp32s2-wemos-mini` should still work. ``` BOARD=esp32s2-wemos-mini make -C tests/shell flash ``` The VID/PID should be `1209:7d00` and not `1209:7d01`. ### Issues/PRs references Co-authored-by: Gunar Schorcht <gunar@schorcht.net> Co-authored-by: Alexandre Abadie <alexandre.abadie@inria.fr>
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Not related to this PR, I think the renode support won't anymore after #19259 because it's configured to have stdio over usart2. But I wasn't able to make it work with the previous configuration, using renode 0.13.3 and also with older versions of RIOT. So there's something broken in renode for stm32f4discovery (and I don't know what). |
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Contribution description
#19259 changed stm32f4discovery default stdio configuration to use CDC ACM over usb and by default the serial port is
/dev/ttyACM0on Linux, so there's no need to override it anymore as before.Testing procedure
make termshould work on this board (but I can't test)Issues/PRs references
I guess this was missed in #19259