4dfab40cac
Add a new DT property named "pixel-group-size" that allows users to configure the driver to refresh the matrix by illuminating multiple LEDs in particular rows simultaneously. This way the maximum possible brightness of the LEDs can be increased (as they can be lit longer) and the timer interrupt handler is executed less frequently, what results in decreased CPU load, but more GPIOTE/PPI channels needs to be allocated if the PWM peripheral cannot be used. Thus, it is left to users to select the configuration that suits them best. Update definitions of both the bbc_microbit boards with this new property, using the maximum available group size (to achieve maximum possible brightness). For v2, no new resources are used (only all channels in the already used PWM peripheral are now utilized). For v1, two more GPIOTE and PPI channels are allocated. Signed-off-by: Andrzej Głąbek <andrzej.glabek@nordicsemi.no> |
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| .. | ||
| doc | ||
| bbc_microbit_v2_defconfig | ||
| bbc_microbit_v2.dts | ||
| bbc_microbit_v2.yaml | ||
| board.cmake | ||
| Kconfig.board | ||
| Kconfig.defconfig | ||