LP5562_REG_PROG_MEM_ENG3
lp55xx_write(chip, LP5562_REG_PROG_MEM_ENG3, 0);
lp55xx_write(chip, LP5562_REG_PROG_MEM_ENG3 + 1, 0);
lp5562_write_program_memory(chip, LP5562_REG_PROG_MEM_ENG3,