ads131e08_read_reg
reg = ads131e08_read_reg(st, ADS131E08_ADR_CFG1R);
reg = ads131e08_read_reg(st, ADS131E08_ADR_CH0R + channel);
reg = ads131e08_read_reg(st, ADS131E08_ADR_CH0R + channel);
reg = ads131e08_read_reg(st, ADS131E08_ADR_CH0R + channel);
reg = ads131e08_read_reg(st, ADS131E08_ADR_CFG3R);
int ret = ads131e08_read_reg(st, reg);