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19573: cpu/stm32/periph_dac: small improvements r=maribu a=gschorcht ### Contribution description This PR provides the following improvements for `periph_dac` on STM32 - Support for `RCC_APB1ENR1_DAC1EN` symbol added. - For boards that have not connected the V_REF+ pin to an external reference voltage, the VREFBUF peripheral can be used as V_REF+ (if supported) by setting `VREFBUF_ENABLE=1`. - If the DAC peripheral has a mode register (`DAC_MCR`), it is set to normal mode with buffer enabled and connected to external pin and on-chip peripherals. This allows to measure the current value of a DAC channel with an ADC channel or to use the DAC channel also for other on-chip peripherals. ### Testing procedure - Green CI - `tests/periph_dac` should still work for any board supporting the `periph_dac` feature. ### Issues/PRs references 19579: doc/doxygen/src/flashing.md: work around Doxygen bug r=maribu a=maribu ### Contribution description Doxygen fails to render inline code in headers correctly in the version the CI uses. So, work around the issue by not typestetting `stm32flash` as inline code but as regular text. 19583: tests: move cpu related applications to tests/cpu r=maribu a=aabadie 19584: tests/build_system/external_board_dirs: fix broken symlinks r=maribu a=aabadie Co-authored-by: Gunar Schorcht <gunar@schorcht.net> Co-authored-by: Marian Buschsieweke <marian.buschsieweke@ovgu.de> Co-authored-by: Alexandre Abadie <alexandre.abadie@inria.fr> |
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arm7_common | ||
atmega32u4 | ||
atmega128rfa1 | ||
atmega256rfr2 | ||
atmega328p | ||
atmega1281 | ||
atmega1284p | ||
atmega2560 | ||
atmega_common | ||
atxmega | ||
avr8_common | ||
cc26x0_cc13x0 | ||
cc26x2_cc13x2 | ||
cc26xx_cc13xx | ||
cc2538 | ||
cortexm_common | ||
efm32 | ||
esp32 | ||
esp8266 | ||
esp_common | ||
fe310 | ||
gd32v | ||
kinetis | ||
lm4f120 | ||
lpc23xx | ||
lpc1768 | ||
msp430_common | ||
msp430fxyz | ||
native | ||
nrf5x_common | ||
nrf51 | ||
nrf52 | ||
nrf9160 | ||
qn908x | ||
riscv_common | ||
rpx0xx | ||
sam0_common | ||
sam3 | ||
sam_common | ||
samd5x | ||
samd21 | ||
saml1x | ||
saml21 | ||
stellaris_common | ||
stm32 | ||
doc.txt | ||
Kconfig |