static const lv_buttonmatrix_ctrl_t kb_ctrl[] = {LV_BUTTONMATRIX_CTRL_WIDTH_4, LV_BUTTONMATRIX_CTRL_WIDTH_4, LV_BUTTONMATRIX_CTRL_WIDTH_4, LV_BUTTONMATRIX_CTRL_WIDTH ...
Report characteristic, the device will send the predefined text whenever button 0 on-board is pressed. You can test this functionality by using a smartphone or laptop. For example, connect your laptop ...
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