mxs_lradc_ts_read_raw_channel
m1 = mxs_lradc_ts_read_raw_channel(ts, ch1);
m2 = mxs_lradc_ts_read_raw_channel(ts, ch2);
mxs_lradc_ts_read_raw_channel(ts, TOUCHSCREEN_VCHANNEL1);
mxs_lradc_ts_read_raw_channel(ts, TOUCHSCREEN_VCHANNEL1);