op_i2c_convert
const bool converted = op_i2c_convert(&commands[0], write, FUSED_REQUEST_WRITE, ddc_line, over_aux)
&& op_i2c_convert(&commands[1], poll, FUSED_REQUEST_POLL, ddc_line, over_aux)
&& op_i2c_convert(&commands[2], read, FUSED_REQUEST_READ, ddc_line, over_aux);